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You searched for: Publication Year 2008 Remove constraint Publication Year: 2008 Subject aquatic plants Remove constraint Subject: aquatic plants
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1. A 700‐year paleoecological record of boreal ecosystem responses to climatic variation from alaska

Author:
Willy Tinner; Christian Bigler; Sharon Gedye; Irene Gregory-Eaves; Richard T. Jones; Petra Kaltenrieder; Urs Krähenbühl; Feng Sheng Hu
Source:
Ecology 2008 v.89 no.3 pp. 729-743
ISSN:
0012-9658
Subject:
boreal forests; ecotones; paleoecology; tundra; history; sediments; lakes; peatlands; forest ecosystems; forest fires; forest trees; wetland plants; botanical composition; climate change; climatic factors; aquatic plants; shrubs; plant communities; herbaceous plants; soil erosion; taiga; paleoclimatology; Alaska
Abstract:
... Recent observations and model simulations have highlighted the sensitivity of the forest–tundra ecotone to climatic forcing. In contrast, paleoecological studies have not provided evidence of tree‐line fluctuations in response to Holocene climatic changes in Alaska, suggesting that the forest–tundra boundary in certain areas may be relatively stable at multicentennial to millennial time scales. We ...
DOI:
10.1890/06-1420.1
PubMed:
18459336

2. Abiotic stresses increase plant regeneration ability

Author:
Puijalon, Sara; Piola, Florence; Bornette, Gudrun
Source:
Evolutionary ecology 2008 v.22 no.4 pp. 493-506
ISSN:
0269-7653
Subject:
abiotic stress; aquatic plants; belowground biomass; habitat destruction; habitats; mechanical stress; nutrient content; perennials; stems; storage organs
Abstract:
... In disturbed habitats, vegetative regeneration is partly ruled by plant reserves and intrinsic growth rates. Under nutrient-limiting conditions, perennial plants tend to exhibit an increased allocation to storage organs. Under mechanically stressful conditions, plants also tend to increase allocation to below-ground biomass and storage organs. We tested whether those stresses acting differently on ...
DOI:
10.1007/s10682-007-9177-5

3. Alteration of seagrass species composition and function over two decades

Author:
Fiorenza Micheli; Melanie J. Bishop; Charles H. Peterson; José Rivera
Source:
Ecological monographs 2008 v.78 no.2 pp. 225-244
ISSN:
0012-9615
Subject:
temporal variation; ecological succession; aquatic invertebrates; Zostera marina; climate change; plant competition; ecological function; aquatic plants; estuaries; Atlantic Ocean; North Carolina
Abstract:
... Changes in the species composition and structural characteristics of marine vegetated habitats in response to climate change or local anthropogenic impacts may alter their quality as habitat for associated fish and invertebrates. Summer densities and biomass of the eelgrass, Zostera marina, declined significantly between 1985 and 2004 in Bogue Sound, North Carolina, USA, within the present‐day zon ...
DOI:
10.1890/06-1605.1

4. Alternative soilless media for growing Petunia x hybrida and Impatiens wallerana: Physical behavior, effect of fertilization and nitrate losses

Author:
Chavez, Walter; Di Benedetto, Adalberto; Civeira, Gabriela; Lavado, Raúl
Source:
Bioresource technology 2008 v.99 no.17 pp. 8082-8087
ISSN:
0960-8524
Subject:
Carex; Impatiens walleriana; Petunia hybrida; Sphagnum; aquatic plants; crop production; fertigation; leaching; nitrates; peat; peatlands; plant growth; plant residues; rivers; soilless media; sustainable agriculture; wastes
Abstract:
... The use of alternative soilless media for the production of potted plants requires knowledge of their physical and chemical characteristics to result in the best conditions for plant growth. We investigated the use of alternative soilless media based on river waste and Sphagnun sp. and Carex sp. from Argentinean peatlands on Petunia x hybrida and Impatiens wallerana production at two fertilization ...
DOI:
10.1016/j.biortech.2008.03.063

5. Antioxidant constituents of Nymphaea caerulea flowers

Author:
Agnihotri, V.K.; ElSohly, H.N.; Smillie, T.J.; Khan, I.A.; Walker, L.A.
Source:
Phytochemistry 2008 v.69 no.10 pp. 2061-2066
ISSN:
0031-9422
Subject:
Nymphaea; aquatic plants; medicinal plants; chemical constituents of plants; valeric acid; myricetin; glycosides; antioxidants; chemical structure; spectral analysis; stereochemistry; antioxidant activity
Abstract:
... As part of an ongoing search for antioxidants from medicinal plants, 20 constituents were isolated from the Nymphaea caerulea flowers, including two 2S,3S,4S-trihydroxypentanoic acid (1), and myricetin 3-O-(3''-O-acetyl)-α-L-rhamnoside (2), along with the known myricetin 3-O-α-L-rhamnoside (3), myricetin 3-O-β-D-glucoside (4), quercetin 3-O-(3''-O-acetyl)-α-L-rhamnoside (5), quercetin 3-O-α-L-rham ...
DOI:
10.1016/j.phytochem.2008.04.009

6. Antioxidant enzyme activities as affected by trivalent and hexavalent chromium species in Fontinalis antipyretica Hedw

Author:
Dazy, Marc; Béraud, Eric; Cotelle, Sylvie; Meux, Eric; Masfaraud, Jean-François; Férard, Jean-François
Source:
Chemosphere 2008 v.73 no.3 pp. 281-290
ISSN:
0045-6535
Subject:
water pollution; glutathione-disulfide reductase; catalase; ascorbate peroxidase; metabolic detoxification; superoxide dismutase; chromium; enzyme activity; aquatic plants; oxidative stress
DOI:
10.1016/j.chemosphere.2008.06.044
PubMed:
18692218

7. Aquatic Risk Assessment of Herbicides in Freshwater Ecosystems of South Florida

Author:
Lance J. Schuler; Gary M. Rand
Source:
Archives of environmental contamination and toxicology 2008 v.54 no.4 pp. 571-583
ISSN:
0090-4341
Subject:
hexazinone; atrazine; uracil; at-risk population; metribuzin; prometryn; biogeography; risk; norflurazon; ecosystems; surface water; linuron; freshwater; acute toxicity; simazine; agricultural land; models; diuron; aquatic plants; rivers; plant communities; probabilistic risk assessment; water flow; bromacil; photosystem II; urea; ametryn; Florida
Abstract:
... Widespread, high-volume use and subsequent off-site transport of herbicides, specifically photosystem II inhibitors (PSII), on agricultural and noncultivated lands in south Florida has resulted in frequent detections in freshwater systems. In light of the current restoration efforts as part of the Comprehensive Environmental Restoration Plan (CERP), increased water flows containing detectable herb ...
DOI:
10.1007/s00244-007-9085-2
PubMed:
18094912

8. Aquatic plant nutrients, moss phosphatase activities and tissue composition in four upland streams in northern England

Author:
Ellwood, N.T.W.; Haile, S.M.; Whitton, B.A.
Source:
Journal of hydrology 2008 v.350 no.3-4 pp. 246-260
ISSN:
0022-1694
Subject:
nutrient content; nitrogen; enzyme activity; nitrate nitrogen; highlands; organic nitrogen compounds; streams; hydrochemistry; mosses and liverworts; phosphorus; aquatic plants; England
Abstract:
... A study was made of the water chemistry, tissue nutrients and surface phosphatase activities of the 2-cm apices of three mosses in four upland streams in northern England, UK. This was part of a project to optimize methods for assessing nutrient fractions in environments with highly variable water chemistry. Aqueous N and P fractions showed the greatest variability followed by moss phosphatase act ...
DOI:
10.1016/j.jhydrol.2007.10.038

9. Arsenic accumulation by the aquatic fern Azolla: Comparison of arsenate uptake, speciation and efflux by A. caroliniana and A. filiculoides

Author:
Zhang, Xin; Lin, Ai-Jun; Zhao, Fang-Jie; Xu, Guo-Zhong; Duan, Gui-Lan; Zhu, Yong-Guan
Source:
Environmental pollution 2008 v.156 no.3 pp. 1149-1155
ISSN:
0269-7491
Subject:
interspecific variation; bioaccumulation; Azolla filiculoides; arsenic; Azolla caroliniana; arsenites; chemical speciation; arsenates; uptake mechanisms; kinetics; metal tolerance; aquatic plants
DOI:
10.1016/j.envpol.2008.04.002
PubMed:
18457908

10. Arsenic removal from waters by bioremediation with the aquatic plants Water Hyacinth (Eichhornia crassipes) and Lesser Duckweed (Lemna minor)

Author:
Alvarado, Sandra; Guédez, Magdiel; Lué-Merú, Marcó P.; Nelson, Graterol; Alvaro, Anzalone; Jesús, Arroyo C.; Gyula, Záray
Source:
Bioresource technology 2008 v.99 no.17 pp. 8436-8440
ISSN:
0960-8524
Subject:
Eichhornia crassipes; Lemna minor; aquatic plants; arsenic; atomic absorption spectrometry; bioaccumulation; biomass production; bioremediation; hydrides; plant density
Abstract:
... In this study the removal of arsenic by the Water Hyacinth (Eichhornia crassipes) and Lesser Duckweed (Lemna minor) was monitored under a concentration of 0.15mgL⁻¹ of the element. Plant densities were 1kg/m² for Lesser Duckweed and 4kg/m² for Water Hyacinth on a wet basis. The arsenic was determined in foliar tissue and water samples by hydride generation atomic absorption spectroscopy. The eleme ...
DOI:
10.1016/j.biortech.2008.02.051

11. Assessing boat damage to seagrass bed habitat in a Florida park from a bioeconomics perspective

Author:
Engeman, R.M.; Duquesnel, J.A.; Cowan, E.M.; Smith, H.T.; Shwiff, S.A.; Karlin, M.
Source:
Journal of coastal research 2008 v.24 no.2 pp. 527-532
ISSN:
1551-5036
Subject:
habitat destruction; estimation; bioeconomic models; contingent valuation; habitat conservation; cost benefit analysis; anthropogenic activities; ecological restoration; aquatic habitat; boats; aquatic plants; Florida
Abstract:
... Seagrass bed habitat is an important biotic community in decline worldwide. Boat damage has long been recognized for its negative impacts on shallow-water seagrass beds, with those along the Florida coast particularly vulnerable in the face of a large human population possessing a large number of boats. Boat scars to seagrass beds recover slowly, resulting in new damage that often outpaces recover ...
Handle:
10113/15645
DOI:
10.2112/06-0703.1

12. Assessing the suitability of wetlands for the reintroduction of the Growling Grass Frog Litoria raniformis

Author:
Sharada Ramamurthy; Graeme Coulson
Source:
Australian zoologist 2008 v.34 no.3 pp. 426-437
ISSN:
0067-2238
Subject:
Litoria raniformis; algae; aluminum; aquatic plants; discriminant analysis; habitats; planting; population dynamics; shorelines; species reintroduction; threatened species; vegetation; wetlands
Abstract:
... The Growling Grass Frog Litoria raniformis has undergone population declines throughout its range over the past 20 years and is listed as a threatened species both in Victoria and nationally. The species was last recorded in 1979 in the area now occupied by the Portland Aluminium Smelter in southwestern Victoria, but the reasons for its disappearance from the area are unclear. Approximately 50 wet ...
DOI:
10.7882/AZ.2008.020

13. Assessment of the Hyperaccumulating Lead Capacity of Salvinia minima Using Bioadsorption and Intracellular Accumulation Factors

Author:
Gloria Sánchez-Galván; Oscar Monroy; Jorge Gómez; Eugenia J. Olguín
Source:
Water, air, and soil pollution 2008 v.194 no.1-4 pp. 77-90
ISSN:
0049-6979
Subject:
pollution; lead; heavy metals; phytoremediation; hyperaccumulators; aquatic plants; biomass; bioaccumulation; adsorption; uptake mechanisms; kinetics; mathematical models; equations
Abstract:
... Salvinia minima has been reported as a cadmium and lead hyperaccumulator being the adsorption and intracellular accumulation the main uptake mechanisms. However, its physicochemical properties, the effect of metal concentration and the presence of organic and inorganic compounds on its hyperaccumulating capacity are still unknown. Furthermore, the specific adsorption and accumulation mechanisms oc ...
DOI:
10.1007/s11270-008-9700-5

14. Bioaccumulation of heavy metals by the aquatic plants Potamogeton pectinatus L. and Potamogeton malaianus Miq. and their potential use for contamination indicators and in wastewater treatment

Author:
Peng, Kejian; Lou, Laiqing; Li, Xiangdong; Shen, Zhenguo
Source:
Science of the total environment 2008 v.392 no.1 pp. 22-29
ISSN:
0048-9697
Subject:
rivers; water pollution; sediment contamination; heavy metals; bioaccumulation; Stuckenia pectinata; aquatic plants; wastewater treatment; phytoremediation; China
Abstract:
... The concentrations of heavy metals in the leaves of two aquatic plants Potamogeton pectinatus L. and Potamogeton malaianus Miq., and the corresponding water and sediment samples from the Donghe River in Jishou City of Hunan Province, China were studied to investigate metal contamination from the intensive industrial activities in the surrounding area. Results showed that the concentrations of heav ...
DOI:
10.1016/j.scitotenv.2007.11.032
PubMed:
18178241

15. Bioremoval of Aqueous Lead Using Lemna Minor

Author:
Hurd, Nicholas A.; Sternberg, Steven P.K.
Source:
International journal of phytoremediation 2008 v.10 no.4-6 pp. 278-288
ISSN:
1522-6514
Subject:
lead; pollutants; bioremediation; Lemna minor; aquatic plants; biomass; laboratories; sorption; equations; simulation models; water pollution
DOI:
10.1080/15226510802096036

16. Cellular Distribution of Metals in a Liverwort and a Moss Transplanted to Two Streams of Differing Acidity

Author:
Thiébaut, G.; Giamberini, L.; Ghanbaja, J.
Source:
Water, air, and soil pollution 2008 v.192 no.1-4 pp. 263-272
ISSN:
0049-6979
Subject:
mosses and liverworts; aquatic plants; streams; pH; acidification; heavy metals; bioaccumulation; cells; histology; acid tolerance; aluminum; iron; hydrochemistry; France
Abstract:
... To investigate the consequences of acidification and metal accumulation on the biology of aquatic bryophytes, the acid-tolerant liverwort Scapania undulata (L.) Dum. and the acid-sensitive moss Rhynchostegium riparioides (Hedw.) Cardot were transplanted from one stream to two other streams of differing acidity (pH 5.20 and 6.38). The bryophytes were collected in a circumneutral (pH 6.57) stream in ...
DOI:
10.1007/s11270-008-9653-8

17. Clonal Plasticity of Aquatic Plant Species Submitted to Mechanical Stress: Escape versus Resistance Strategy

Author:
Puijalon, Sara; Bouma, Tjeerd J.; Van Groenendael, Jan; Bornette, Gudrun
Source:
Annals of botany 2008 v.102 no.6 pp. 989-996
ISSN:
0305-7364
Subject:
Mentha aquatica; Potamogeton; aquatic plants; biomass; canopy; clonal variation; clones; mechanical stress; plant stress; stemflow; stems; water currents
Abstract:
... BACKGROUND AND AIMS: The plastic alterations of clonal architecture are likely to have functional consequences, as they affect the spatial distribution of ramets over patchy environments. However, little is known about the effect of mechanical stresses on the clonal growth. The aim of the present study was to investigate the clonal plasticity induced by mechanical stress consisting of continuous w ...
DOI:
10.1093/aob/mcn190
PubMed:
18854376
PubMed Central:
PMC2712407

18. Concentrations and characteristics of organochlorine pesticides in aquatic biota from Qiantang River in China

Author:
Zhou, R.B.; Zhu, L.Z.; Chen, Y.Y.; Kong, Q.X.
Source:
Environmental pollution 2008 v.151 no.1 pp. 190-199
ISSN:
0269-7491
Subject:
water pollution; sediments; dicofol; rivers; crabs; quantitative analysis; DDT (pesticide); lindane; geographical variation; clams; seafoods; pesticide residues; freshwater fish; shrimp; hydrochemistry; aquatic plants; metabolites; China
DOI:
10.1016/j.envpol.2007.02.015
PubMed:
17499409

19. Conservation of aquatic plants in artificial watercourses: are main drains a substitute for vulnerable navigation canals

Author:
Goulder, R.
Source:
Aquatic conservation 2008 v.18 no.2 pp. 163-174
ISSN:
1052-7613
Subject:
aquatic plants; boats; flora; vegetation types
Abstract:
... 1.The vegetation of disused and occasionally used navigation canals with acknowledged botanical conservation value was compared with that of major land-drainage channels with potential conservation interest.2.Aquatic plant taxa and their abundance were recorded in 500-m lengths of watercourses in East Yorkshire, north-east England.3.There was substantial overlap between canals and drains in the aq ...
DOI:
10.1002/aqc.828

20. Differences in seed mass between hydric and xeric plants influence seed bank dynamics in a dryland riparian ecosystem

Author:
Stromberg, J.C.; Boudell, J.A.; Hazelton, A.F.
Source:
Functional ecology 2008 v.22 no.2 pp. 205-212
ISSN:
0269-8463
Subject:
alluvial soils; annuals; aquatic plants; arid lands; buried seeds; drought; ecosystems; floodplains; floods; forests; habitats; highlands; probability; riparian areas; seedlings; shrublands; soil depth; soil water; variance; wetlands; xerophytes
Abstract:
... 1. Dryland riparian zones have steep spatial gradients of soil moisture and flood disturbance, and the component hydrogeomorphic surfaces support hydric to xeric plant species. These systems undergo extremes of flood and drought, a dynamic that may select for persistent soil seed banks. We asked if reliance on this strategy differed among plants in three moisture groups (hydric, mesic and xeric), ...
DOI:
10.1111/j.1365-2435.2007.01375.x

21. Differential influence of a monotypic and diverse native aquatic plant bed on a macroinvertebrate assemblage; an experimental implication of exotic plant induced habitat

Author:
Heather J. Theel; Eric D. Dibble; John D. Madsen
Source:
Hydrobiologia 2008 v.600 no.1 pp. 77-87
ISSN:
0018-8158
Subject:
Hydrilla verticillata; Lepomis macrochirus; aquatic habitat; aquatic plants; biomass; community structure; fish; food webs; foods; indicator species; indigenous species; introduced plants; invasive species; macroinvertebrates; species diversity
Abstract:
... Aquatic plants mediate ecological processes in aquatic habitats, specifically predator–prey (bluegill sunfish (Lepomis macrochirus Rafinesque)-macroinvertebrate) interactions. Macroinvertebrate colonization is directly and indirectly influenced by substrate heterogeneity, interstitial space, and surface complexity. Exotic invasive plant species, such as Hydrilla verticillata L.F. Royle, may alter ...
DOI:
10.1007/s10750-007-9177-z

22. Discovery of Gynoecium Color Polymorphism in an Aquatic Plant

Author:
Huang, Shuang-Quan; Tang, Xiao-Xin
Source:
Journal of integrative plant biology 2008 v.50 no.9 pp. 1178-1182
ISSN:
1672-9072
Subject:
ovules; Butomus umbellatus; morphs; fecundity; pedicel; flowers; color; pollen; aquatic plants; China
Abstract:
... Flower color polymorphism exhibited by natural populations provides an opportunity for understanding the evolutionary mechanisms contributing to the diversity of floral morphology. However, little is known about the color polymorphism of female organs in flowering plants. Here we report gynoecium color polymorphism in Butomus umbellatus (Butomaceae), an emergent, aquatic monocot. Populations from ...
DOI:
10.1111/j.1744-7909.2008.00720.x
PubMed:
18924283

23. Distribution of aquatic plants in the Northern Vosges rivers: implications for biomonitoring and conservation

Author:
B.O.L. Demars; G. Thiébaut
Source:
Aquatic conservation 2008 v.18 no.5 pp. 619-632
ISSN:
1052-7613
Subject:
alkalinity; aquatic habitat; aquatic plants; biogeography; hydrochemistry; monitoring; pH; phosphorus; rivers; sandstone; surface water; vegetation; watersheds
Abstract:
... 1. The continual confusion over the definition of the term ‘trophic status’ has led to ambiguous demonstrations of the influence of alkalinity versus inorganic N and P on aquatic plant distribution. 2. Data from the Northern Vosges rivers (sandstone geology) were reinvestigated to test whether it was possible to separate the effect of (i) spatial isolation from surface water chemistry, and (ii) al ...
DOI:
10.1002/aqc.844

24. Diversity enhances cover and stability of seaweed assemblages: the role of heterogeneity and time

Author:
John J. Stachowicz; Michael Graham; Matthew E. S. Bracken; Amber I. Szoboszlai
Source:
Ecology 2008 v.89 no.11 pp. 3008-3019
ISSN:
0012-9658
Subject:
temporal variation; plant communities; algae; experimental design; botanical composition; niches; microhabitats; dry matter accumulation; spatial variation; field experimentation; aquatic plants; California
Abstract:
... Generalizations regarding the mechanisms underlying the effects of plant diversity on ecosystem processes, and whether the patterns transcend study systems remain elusive. Many terrestrial plant diversity manipulations have found that plant biomass increases with diversity, but most marine studies find little or no effect of seaweed diversity on producer biomass or production. However, differences ...
DOI:
10.1890/07-1873.1

25. Does salinity reduce the tolerance of two contrasting wetland plants, the submerged monocot Vallisneria australis and the woody shrub Melaleuca ericifolia, to wetting and drying?

Author:
Salter, Jacqueline; Morris, Kay; Boon, Paul I.
Source:
Marine & freshwater research 2008 v.59 no.4 pp. 291-303
ISSN:
1323-1650
Subject:
Melaleuca; Vallisneria; aquatic plants; drawdown; drying; freshwater; salinity; salt stress; shrubs; soil; submergence; wetland plants; Australia
Abstract:
... Adverse hydrological regimes and secondary salinisation are ubiquitous stressors to wetland plants in south-eastern Australia. To test whether salinity stress interacts with hydrological stress to affect the growth and survival of aquatic plants, we examined the responses of Melaleuca ericifolia Smith, a shrub favouring drained sites, and the obligately submerged monocot Vallisneria australis (S.W ...
DOI:
10.1071/MF07147

26. Ecological conditions for spread of the invasive snail Physa marmorata (Pulmonata: Physidae) in the Ivory Coast

Author:
Y. K. Bony; N. C. Kouassi; D. Diomandé; G. Gourene; M. Verdoit-Jarraya; J. P. Pointier
Source:
African zoology 2008 v.43 no.1 pp. 53-60
ISSN:
2224-073X
Subject:
Melanoides tuberculatus; Physa; Pistia stratiotes; Pulmonata; aquatic plants; basins; dams (hydrology); fish ponds; invasive species; population dynamics; rain; redox potential; rivers; snails; streams; wet season; Benin; Caribbean; Cote d'Ivoire; Ghana; Nigeria; South Africa
Abstract:
... Physa marmorata, originally described from the Lesser Antilles, was introduced into Africa before 1900 and has previously been reported from Bénin, Togo, Ghana, Nigeria and South Africa. Here we show that it is also common in temporary ponds, fish ponds, dams and streams in the La Mé and Agnéby basins, southern Ivory Coast. Population dynamics were studied in one river in Agboville and in one perm ...
DOI:
10.1080/15627020.2008.11407406

27. The Effect of Typhoons on the Diversity and Distribution Pattern of Aquatic Plants on Hainan Island, South China

Author:
Wang, Qiang; Yu, Dan; Li, Zhongqiang; Wang, Ligong
Source:
Biotropica 2008 v.40 no.6 pp. 692-699
ISSN:
0006-3606
Subject:
aquatic habitat; aquatic plants; cluster analysis; rain; regression analysis; species diversity; surveys; typhoons; wind speed; China; Philippines
Abstract:
... Typhoons are an important meteorological feature of the tropical southwest Pacific. However, little is known about their effects on aquatic plants. Here, we describe the potential influence of typhoons on the diversity and distribution of aquatic plants on Hainan Island, South China. Using a combination of field survey and published data, 266 species or sub-species belonging to 115 genera in 57 fa ...
DOI:
10.1111/j.1744-7429.2008.00430.x

28. Effect of dissolved organic matter source on phytotoxicity to Lemna aequinoctialis

Author:
Shoji, Ryo
Source:
Aquatic toxicology 2008 v.87 no.3 pp. 210-214
ISSN:
0166-445X
Subject:
aquatic plants; acute toxicity; phytotoxicity; toxicity testing; copper; heavy metals; dissolved organic matter; plant growth; Japan
Abstract:
... The effect of dissolved organic matter (DOM) on metal toxicity to aquatic organisms has been reported. Biotic ligand model (BLM) can account for this factor to predict metal toxicity. However, few attempts have been made to assess the effect of the DOM on metal phytotoxicity to duckweeds. The objectives of this study were to examine the effect of DOM on copper toxicity to the duckweed Lemna aequin ...
DOI:
10.1016/j.aquatox.2008.02.005
PubMed:
18359523

29. Effect of prolonged exposition to pulp mill effluents on the invasive aquatic plant egeria densa and other primary producers: a mesocosm approach

Author:
Palma, A.T.; Silva, M.G.; Munoz, C.A.; Cartes, C.; Jaksic, F.M.
Source:
Environmental toxicology and chemistry 2008 v.27 no.2 pp. 387-396
ISSN:
0730-7268
Subject:
pulp and paper mill effluents; chronic toxicity; environmental exposure; Egeria densa; invasive species; water pollution; aquatic plants; plant growth; chlorophyll; periphyton; biomass; organic matter; ecosystems; kraft pulp; Chile
Abstract:
... The recent disappearance of the aquatic plant Egeria densa, a Brazilian native invasive species, from a wetland in southern Chile prompted several efforts to unveil the origin of this phenomenon. Because these changes occurred by the time a newly built pulp mill started its operations in the area, a reasonable doubt for a cause-effect relationship is plausible. We implemented a mesocosm approach t ...
DOI:
10.1897/07-194R2.1
PubMed:
18348628

30. Effects of pre-existing submersed vegetation and propagule pressure on the invasion success of Hydrilla verticillata

Author:
Chadwell, Todd B.; Engelhardt, Katharina A.M.
Source:
Journal of applied ecology 2008 v.45 no.2 pp. 515-523
ISSN:
0021-8901
Subject:
Vallisneria americana; indigenous species; aquatic plants; Hydrilla verticillata; invasive species; introduced species; colonizing ability; ecological invasion; plant ecology; plant reproduction; Chesapeake Bay; Maryland
Abstract:
... 1. With biological invasions causing widespread problems in ecosystems, methods to curb the colonization success of invasive species are needed. The effective management of invasive species will require an integrated approach that restores community structure and ecosystem processes while controlling propagule pressure of non-native species. 2. We tested the hypotheses that restoring native vegeta ...
DOI:
10.1111/j.1365-2664.2007.01384.x

31. Fish Biological Control of The Israeli National Water Carrier And Dual-Purpose Reservoirs (Fish Culture/Crop Irrigation): The Israeli Concept

Author:
Shmuel Rothbard
Source:
Archiwum rybactwa polskiego = 2008 v.16 no.1 pp. 5-19
ISSN:
2083-6139
Subject:
Ctenopharyngodon idella; Cyprinus carpio; Dicentrarchus labrax; Hypophthalmichthys molitrix; Hypophthalmichthys nobilis; Morone chrysops; Morone saxatilis; Mylopharyngodon piceus; Oreochromis aureus; Sciaenops ocellatus; animal growth; aquatic plants; biological control; byproducts; carp; drought; eggs; fauna; females; fish culture; fish farms; freshwater; gonadotropin-releasing hormone; gonads; grasses; hatching; humans; hybrids; irrigated farming; irrigation; lakes; niches; pipes; police; rain; rearing; rivers; schistosomiasis; soil; spawning; synergism; triploidy; water reservoirs; water shortages; winter; zooplankton; Israel
Abstract:
... The location of Israel in a semi-arid part of the globe and the seasonal rainfalls that are limited to short periods in wintertime (about 50 days of rain with ~650 mm average precipitation in the north of the country), are the main causes of chronic water shortage and frequent droughts. The Israeli Water Authority planned and constructed the National Water Carrier (NWC) to convey water from the so ...
DOI:
10.2478/s10086-008-0001-9

32. Flavones and flavone glycosides from Halophila johnsonii

Author:
Meng, Yanhui; Krzysiak, Amanda J.; Durako, Michael J.; Kunzelman, Jennifer I.; Wright, Jeffrey L.C.
Source:
Phytochemistry 2008 v.69 no.14 pp. 2603-2608
ISSN:
0031-9422
Subject:
grasses; tissue distribution; chemical structure; luteolin; apigenin; spectral analysis; Halophila; glycosides; aquatic plants
Abstract:
... Halophila johnsonii Eiseman is a shallow-water marine angiosperm which contains UV-absorbing metabolites. Studies on methanol extracts of H. johnsonii by means of HPLC-UV, NMR, HPLC-MS resulted in isolation and identification of seven previously unknown flavone glycosides: 5,6,7,3',4',5'-hexahydroxyflavone-7-O-β-glucopyranoside (1), 5,6,7,3',4',5'-hexahydroxyflavone-7-O-(6"-O-acetyl)-β-glucopyrano ...
DOI:
10.1016/j.phytochem.2008.07.007
PubMed:
18771781

33. From fresh to saline: a comparison of zooplankton and plant communities developing under a gradient of salinity with communities developing under constant salinity levels

Author:
Nielsen, Daryl L.; Brock, Margaret A.; Vogel, Matthew; Petrie, Rochelle
Source:
Marine & freshwater research 2008 v.59 no.7 pp. 549-559
ISSN:
1323-1650
Subject:
aquatic plants; freshwater; plant communities; salinity; wetlands; zooplankton; Australia
Abstract:
... In Australia, many freshwater wetlands are becoming saline. Knowing which elements of a biotic community will persist as wetlands turn saline is relevant to their future management. We simulated gradual and sudden increases in salinity in outdoor mesocosms to test the hypotheses that: (1) aquatic plant and zooplankton communities exposed to a gradient of increasing salinity over time would initial ...
DOI:
10.1071/MF07166

34. Genetic diversity and relationships of lotus (Nelumbo) cultivars based on allozyme and ISSR markers

Author:
Tian, Hong-Li; Xue, Jian-Hua; Wen, Jun; Mitchell, Grant; Zhou, Shi-Liang
Source:
Scientia horticulturae 2008 v.116 no.4 pp. 421-429
ISSN:
0304-4238
Subject:
alleles; rhizomes; Nelumbo nucifera; genetic markers; microsatellite repeats; hybrids; wild plants; interspecific hybridization; allozymes; genetic polymorphism; ornamental plants; cultivars; diameter; nursery crops; seeds; aquatic plants; loci; heterozygosity; flowers; color; genetic variation
Abstract:
... Genetic diversity and genetic relationships of lotus (Nelumbo Adanson) cultivars were evaluated using allozyme and ISSR markers. The samples used covered 11 accessions of possible hybrids between Nelumbo nucifera and Nelumbo lutea and 92 accessions of N. nucifera including 69 flower lotus, 13 rhizome lotus, 5 seed lotus and 5 wild lotus. For allozyme studies, a total of 31 alleles at 23 loci of 18 ...
DOI:
10.1016/j.scienta.2008.02.011

35. Genetic variations in the endangered aquatic plant Nymphoides coreana (Menyanthaceae) in south-western Japan

Author:
SHIBAYAMA, YUKI; KADONO, YASURO
Source:
Plant species biology 2008 v.23 no.3 pp. 212-216
ISSN:
0913-557X
Subject:
Nymphoides; alleles; allozymes; aquatic plants; genetic variation; heterozygosity; inbreeding coefficient; loci; selfing; species diversity; Japan
Abstract:
... We surveyed allozyme variations among ten Nymphoides coreana populations in southwestern Japan. The percentage of polymorphic loci, the mean number of alleles per locus, and the effective number of alleles per locus varied little among populations. The observed heterozygosity and expected heterozygosity were low. The proportion of gene diversity of the species within populations (Hs) was also low. ...
DOI:
10.1111/j.1442-1984.2008.00218.x

36. Grazing regulates the spatial variability of periphyton biomass

Author:
Helmut Hillebrand
Source:
Ecology 2008 v.89 no.1 pp. 165-173
ISSN:
0012-9658
Subject:
temporal variation; freshwater; meta-analysis; spatial distribution; grazing; benthic organisms; coastal water; aquatic invertebrates; herbivores; periphyton; species diversity; spatial variation; field experimentation; plant competition; biomass; aquatic plants; predator-prey relationships
Abstract:
... The presence of consumers not only alters the mean biomass of the prey assemblage, but also affects the spatial heterogeneity of biomass distribution. Whereas the mean prey biomass is generally reduced by consumer presence, the effect on spatial heterogeneity is less clear‐cut. A meta‐analysis of almost 600 field experiments manipulating the presence of benthic invertebrate or vertebrate grazers w ...
DOI:
10.1890/06-1910.1
PubMed:
18376558

37. Green and Golden Bell Frogs in New South Wales: current status and future prospects

Author:
Arthur W. White; Graham H. Pyke
Source:
Australian zoologist 2008 v.34 no.3 pp. 319-333
ISSN:
0067-2238
Subject:
Gambusia holbrooki; Litoria; aquatic plants; conservation status; eggs; extinction; frogs; habitat destruction; habitats; population dynamics; predation; predatory fish; surveys; tadpoles; New South Wales
Abstract:
... Surveys carried out between 1990 and 1995 of almost all known historic locations within New South Wales (including the ACT) for the Green and Golden Bell Frog Litoria aurea revealed that the species had suffered a dramatic decline in distribution and abundance in this region, with over 80% of all historic populations having gone extinct, and many of the extant populations being reduced to low numb ...
DOI:
10.7882/AZ.2008.010

38. Highways as corridors and habitats for the invasive common reed Phragmites australis in Quebec, Canada

Author:
Jodoin, Yvon; Lavoie, Claude; Villeneuve, Paul; Theriault, Marius; Beaulieu, Julien; Belzile, François
Source:
Journal of applied ecology 2008 v.45 no.2 pp. 459-466
ISSN:
0021-8901
Subject:
wetlands; Phragmites australis; spatial distribution; invasive species; ecological invasion; roadside plants; habitats; aquatic plants; highways; Quebec
Abstract:
... 1. Roads provide suitable conditions for the establishment and growth of exotic species. Most roads are bordered by drainage ditches forming a network of linear wetlands. Drainage ditches may serve as habitats and corridors facilitating the spread of aquatic invaders into the intersected ecosystems. The common reed Phragmites australis is one of these aquatic invaders frequently found in marshes a ...
DOI:
10.1111/j.1365-2664.2007.01362.x

39. Hydatellaceae are water lilies with gymnospermous tendencies

Author:
Friedman, William E.
Source:
Nature 2008 v.453 no.7191 pp. 94-97
ISSN:
0028-0836
Subject:
Hydatellaceae; gametophytes; endosperm; embryogenesis; aquatic plants; seed development
DOI:
10.1038/nature06733
PubMed:
18354395

40. Hydroxycinnamic acid derivatives in an aquatic liverwort as possible bioindicators of enhanced UV radiation

Author:
Arróniz-Crespo, M.; Núñez-Olivera, E.; Martínez-Abaigar, J.
Source:
Environmental pollution 2008 v.151 no.1 pp. 8-16
ISSN:
0269-7491
Subject:
mosses and liverworts; aquatic plants; ultraviolet radiation; radiation resistance; coumaric acids; mountains; streams; water temperature; vigor; chlorophyll; plant pigments; biomarkers
DOI:
10.1016/j.envpol.2007.03.009
PubMed:
17481786

41. Impact of Sugar Factory Effluent on the Growth and Biochemical Characteristics of Terrestrial and Aquatic Plants

Author:
Ayyasamy, P. M.; Yasodha, R.; Rajakumar, S.; Lakshmanaperumalsamy, P.; Rahman, P. K. S. M.; Lee, Sanghoon
Source:
Bulletin of environmental contamination and toxicology 2008 v.81 no.5 pp. 449-454
ISSN:
0007-4861
Subject:
Eichhornia crassipes; aquatic plants; irrigation water; mung beans; physicochemical properties; seed germination; seedling growth; sugar industry; sugars
Abstract:
... The physico-chemical characteristics of sugar industry effluent were measured and some were found to be above those limits permissible in the Indian irrigation water standard. A pot study was initially conducted to study the effects of different concentrations (20%, 40%, 60%, 80% and 100%) of sugar factory effluent on seed germination, seedling growth and biochemical characteristics of green gram ...
DOI:
10.1007/s00128-008-9523-5
PubMed:
18784897

42. Influences of habitat and land cover on fish distributions along a tributary to Lake Ontario, New York

Author:
Singkran, Nuanchan; Meixler, Marcia S.
Source:
Landscape ecology 2008 v.23 no.5 pp. 539-551
ISSN:
0921-2973
Subject:
aquatic plants; cluster analysis; fish; habitats; land cover; plantations; roads; sand; shrubs; surface water level; swamps; urban areas; Lake Ontario; New York
Abstract:
... Influences of habitat and land cover on fish distributions were determined along a lentic-lotic gradient along a tributary to Lake Ontario, New York. Nonmetric multidimensional scaling, cluster analysis, and specific characterization methods were used to classify the fish species into five groups based on their similar patterns of distribution, species-specific habitat relationship, and relative a ...
DOI:
10.1007/s10980-008-9212-0

43. Influential environmental gradients and patterns of fish assemblages in a West African basin

Author:
Kouamé, Kouakou Augustin; Yao, Stanislas Silvain; Gooré Bi, Gouli; Kouamélan, Essetchi Paul; N'Douba, Valentin; Kouassi, N'Guessan Joël
Source:
Hydrobiologia 2008 v.603 no.1 pp. 159-169
ISSN:
0018-8158
Subject:
interspecific variation; basins; palm oils; canopy; rivers; lakes; total dissolved solids; environmental factors; watersheds; species diversity; anthropogenic activities; fish; indigenous species; aquatic plants; Western Africa
Abstract:
... Twenty-two sites were monitored in the Lower Sassandra River Basin (Côte d'Ivoire, West Africa) to examine patterns in fish species assemblage structure along environmental gradients. Hierarchical clustering of the species presence-absence data identified four types of assemblages corresponding to the man-made Lake Buyo, the main channel, and the two major tributaries. Canonical Correspondence Ana ...
DOI:
10.1007/s10750-007-9256-1

44. Inhibitory effects of Nelumbo nucifera leaves on rat lens aldose reductase, advanced glycation endproducts formation, and oxidative stress

Author:
Jung, Hyun Ah; Jung, Yu Jung; Yoon, Na Young; Jeong, Da Mi; Bae, Hyun Ju; Kim, Dong-Wook; Na, Dong Hee; Choi, Jae Sue
Source:
Food and chemical toxicology 2008 v.46 no.12 pp. 3818-3826
ISSN:
0278-6915
Subject:
glycation; medicinal plants; flavonoids; Nelumbo nucifera; perennials; aldoses; leaves; glycemic index; glycemic effect; rats; antioxidant activity; aquatic plants; crosslinking; hypoglycemic agents; free radical scavengers; animal models; indigenous species; rhizomes; phenolic compounds; India; Middle East; China; Egypt
DOI:
10.1016/j.fct.2008.10.004

45. Invasive riparian plant litter alters aquatic insect growth

Author:
Going, Barbara M.; Dudley, Tom L.
Source:
Biological invasions 2008 v.10 no.7 pp. 1041-1051
ISSN:
1387-3547
Subject:
Tamarix ramosissima; plant growth; larviposition; rivers; nitrogen content; plant nutrition; plant litter; Trichoptera; Arundo donax; riverbank protection; particulates; streams; riparian areas; indigenous species; invasive species; aquatic plants; aquatic insects
Abstract:
... In a laboratory study, we examined growth and survival of the caddisfly, Lepidostoma unicolor, feeding on two types of native leaf litter (Alnus rhombifolia [Alder] and a Salicaceae mix [Salix spp. and Populus fremontii]) and two invasive, non-native species (Tamarix ramosissima [saltcedar] and Arundo donax [giant reed]). Larval survival was high (>85%), and did not differ, among those fed Alnus, ...
DOI:
10.1007/s10530-007-9182-1

46. Iron plaques improve the oxygen supply to root meristems of the freshwater plant, Lobelia dortmanna

Author:
Claus Lindskov Møller; Kaj Sand‐Jensen
Source:
new phytologist 2008 v.179 no.3 pp. 848-856
ISSN:
0028-646X
Subject:
Lobelia; aquatic plants; biogeography; coatings; diffusivity; electrodes; freshwater; hypoxia; oxygen; platinum; root meristems; sediments
Abstract:
... • High radial oxygen loss (ROL) from roots of aquatic plants to reduced sediments is thought to deplete the roots of oxygen and restrict the distribution of those species unable to form a barrier to oxygen loss. Metal precipitates with high iron content (Fe‐plaques) frequently form on roots of aquatic plants and could create such a diffusion barrier, thereby diverting a larger proportion of downwa ...
DOI:
10.1111/j.1469-8137.2008.02506.x
PubMed:
18513220

47. Linking spatial metrics and fish catch reveals the importance of coastal wetland connectivity to inshore fisheries in Queensland, Australia

Author:
Meynecke, J.-O.; Lee, S.Y.; Duke, N.C.
Source:
Biological conservation 2008 v.141 no.4 pp. 981-996
ISSN:
0006-3207
Subject:
wetlands; freshwater fisheries; rivers; ecosystem services; benthic organisms; regression analysis; spatial data; population density; aquatic plants; coastal water; habitats; estuaries; Lates calcarifer; Queensland
Abstract:
... Many commercially important fish species use coastal marine environments such as mangroves, tidal flats and seagrass beds as nurseries or breeding grounds. The ecological importance of spatially connected habitats to conservation is well established for terrestrial environments. However, few studies have applied spatial metrics, including measures of structural connectivity to marine environments. ...
DOI:
10.1016/j.biocon.2008.01.018

48. Macrophyte diversity and physico-chemical characteristics of Tyrrhenian coast ponds in central Italy: implications for conservation

Author:
Della Bella, Valentina; Bazzanti, Marcello; Dowgiallo, Maria Giuseppina; Iberite, Mauro
Source:
Hydrobiologia 2008 v.597 no.1 pp. 85-95
ISSN:
0018-8158
Subject:
Callitriche; Potamogeton; Ranunculus; amphibians; aquatic environment; aquatic plants; coasts; conservation plants; dissolved oxygen; ecosystems; environmental factors; nitrogen content; oxygen; pH; ponds; principal component analysis; surface area; Italy
Abstract:
... Awareness of pond conservation value is growing all over Europe. Ponds are recognized as important ecosystems supporting large numbers of species and several rare and threatened aquatic plants, macroinvertebrates and amphibians. Notwithstanding ponds, particularly temporary ones, are still neglected in Italy. There are some gaps in our understanding of the macrophyte ecology and the conservation v ...
DOI:
10.1007/s10750-007-9216-9

49. Maize plants: An ideal production platform for effective and safe molecular pharming

Author:
Ramessar, Koreen; Sabalza, Maite; Capell, Teresa; Christou, Paul
Source:
Plant science 2008 v.174 no.4 pp. 409-419
ISSN:
0168-9452
Subject:
Zea mays; aquatic plants; biopharmaceuticals; cells; corn; molecular farming; plant viruses; risk; vegetable crops
Abstract:
... Maize (Zea mays), the world's third most important cereal crop, was the first plant developed into a commercial platform for molecular pharming in the field. Although there are now many different plant-based platforms, including leafy crops, fruit and vegetable crops, other cereals, aquatic plants, algae and systems based on plant viruses and cultured plant cells, maize still demonstrates the uniq ...
DOI:
10.1016/j.plantsci.2008.02.002

50. Management of an ornamental pond as a conservation site for a threatened native fish species, crucian carp Carassius carassius

Author:
Copp, G. H.; Warrington, S.; Wesley, K. J.
Source:
Hydrobiologia 2008 v.597 no.1 pp. 149-155
ISSN:
0018-8158
Subject:
Carassius carassius; aquatic plants; barley straw; body condition; fish; habitats; heat sums; history; hybridization; indigenous species; invertebrates; ponds; sediments; surveys; temperature; England
Abstract:
... Ornamental ponds are important sites for conserving threatened native fish species (e.g. crucian carp Carassius carassius L.), but pond management plans rarely include considerations of native fishes. We developed and implemented a management plan for a small (0.8 h), ornamental estate pond in Hertfordshire (England) using historical information (aquatic plant and animal surveys) and a 9-year data ...
DOI:
10.1007/s10750-007-9220-0

51. Managing Invasive Aquatic Plants in a Changing System: Strategic Consideration of Ecosystem Services

Author:
HERSHNER, CARL; HAVENS, KIRK J.
Source:
Conservation biology 2008 v.22 no.3 pp. 544-550
ISSN:
0888-8892
Subject:
Hydrilla verticillata; Phragmites australis; anthropogenic activities; aquatic plants; climate change; coasts; community structure; ecosystem services; ecosystems; grasses; habitat destruction; invasive species; plant communities; salt marshes; vigor
Abstract:
... Climate change is projected to increase stress for many coastal plant communities. Along large portions of the North American coast, habitat degradation from anthropogenic changes to the environment already threaten the community structure of tidal marshes and submerged aquatic grass beds. The potential loss of ecological services historically provided by these communities has been a long-standing ...
DOI:
10.1111/j.1523-1739.2008.00957.x
PubMed:
18577083

52. Measuring bed shear stress along vegetated river beds using FST-hemispheres

Author:
Bockelmann-Evans, B.N.; Davies, R.; Falconer, R.A.
Source:
Journal of environmental management 2008 v.88 no.4 pp. 627-637
ISSN:
0301-4797
Subject:
rivers; calibration; stream channels; surface water level; hydrodynamics; water flow; river water; shear stress; measurement; aquatic plants; hydrologic models
DOI:
10.1016/j.jenvman.2007.03.044
PubMed:
17560013

53. Metal accumulation by stream bryophytes, related to chemical speciation

Author:
Tipping, E.; Vincent, C.D.; Lawlor, A.J.; Lofts, S.
Source:
Environmental pollution 2008 v.156 no.3 pp. 936-943
ISSN:
0269-7491
Subject:
streams; Bryopsida; riparian areas; heavy metals; uptake mechanisms; copper; zinc; cadmium; lead; regression analysis; aquatic plants; hydrochemistry; chemical speciation; protons; binding sites; humic substances; plant nutrition; simulation models
DOI:
10.1016/j.envpol.2008.05.010
PubMed:
18541353

54. Metal contamination of Posidonia oceanica meadows along the Corsican coastline (Mediterranean)

Author:
Lafabrie, C.; Pergent-Martini, C.; Pergent, G.
Source:
Environmental pollution 2008 v.151 no.1 pp. 262-268
ISSN:
0269-7491
Subject:
aquatic plants; coasts; marine science; Liliopsida; heavy metals; water pollution; pollutants; marine sediments; cadmium; cobalt; chromium; mercury; nickel; lead; chemical constituents of plants; leaves; shoots; mining; environmental monitoring; indicator species; geographical variation; Corsica
DOI:
10.1016/j.envpol.2007.01.047
PubMed:
17428593

55. Microhabitat preferences of the endangered Growling Grass Frog Litoria raniformis in southern Victoria

Author:
Geoffrey W. Heard; Peter Robertson; Michael P. Scroggie
Source:
Australian zoologist 2008 v.34 no.3 pp. 414-425
ISSN:
0067-2238
Subject:
Litoria raniformis; aquatic plants; aquatic zones; frogs; lentic systems; lotic systems; microhabitats; multidimensional scaling; plant litter; sampling; summer; surveys; wetlands; Victoria (Australia)
Abstract:
... We examined nocturnal microhabitat preferences of the endangered Growling Grass Frog Litoria raniformis in lotic and lentic environments in southern Victoria, Australia. Data were obtained during surveys of six wetland sites during the summer of 2003. At all sites the observed distribution of frogs amongst microhabitat categories differed from their availability, as assessed by sampling of random ...
DOI:
10.7882/AZ.2008.019

56. Modification of chromate toxicity by sulphate in duckweeds (Lemnaceae)

Author:
Appenroth, Klaus-J.; Luther, Alexandra; Jetschke, Gottfried; Gabrys, Halina
Source:
Aquatic toxicology 2008 v.89 no.3 pp. 167-171
ISSN:
0166-445X
Subject:
Spirodela polyrhiza; Lemna minor; chromium; heavy metals; aquatic plants; phytotoxicity; sulfates; plant growth
Abstract:
... Two duckweed species, Spirodela polyrhiza and Lemna minor, were used to measure the toxicity of chromate (100μM) at three levels of sulphate (13μM, low sulphate=LS; 410μM, normal sulphate=NS; 10,000μM, high sulphate=HS). Growth rates calculated on the basis of dry weight, chlorophyll and carotenoid content were all reduced by chromate. This inhibition was the strongest under LS conditions and the ...
DOI:
10.1016/j.aquatox.2008.06.012
PubMed:
18675470

57. More than inorganic copper is bioavailable to aquatic mosses at environmentally relevant concentrations

Author:
Ferreira, Daniel; Tousset, Nicolas; Ridame, Celine; Tusseau-Vuillemin, Marie-Helene
Source:
Environmental toxicology and chemistry 2008 v.27 no.10 pp. 2108-2116
ISSN:
0730-7268
Subject:
bioavailability; copper; Hyphomycetes; mosses and liverworts; aquatic plants; dissolved organic matter; bioaccumulation; EDTA (chelating agent); humic acids; hydrophobicity; China
Abstract:
... The present study investigates how dissolved organic matter (DOM) alters copper bioavailability at environmentally relevant concentrations (1-5 μg/L of dissolved copper, 1-4 mg/L of dissolved organic copper). A methodology combining two biological endpoints (short-term and steady-state bioaccumulation of copper by the aquatic moss Fontinalis antipyretica) and a sampling of labile copper with diffu ...
DOI:
10.1897/07-249.1
PubMed:
18444694

58. Nitrogen Phytoremediation by Water Hyacinth (Eichhornia crassipes (Mart.) Solms)

Author:
L. J. Fox; P. C. Struik; B. L. Appleton; J. H. Rule
Source:
Water, air, and soil pollution 2008 v.194 no.1-4 pp. 199-207
ISSN:
0049-6979
Subject:
water pollution; ponds; nitrogen; phytoremediation; Eichhornia crassipes; aquatic plants; dry matter accumulation; bioaccumulation
Abstract:
... The phytoremediation potential of water hyacinth, Eichhornia crassipes (Mart.) Solms, was examined in two independent studies under nitrogen (N) rates of 0, 40, 80, 100, 150, 200, and 300 ppm. A modified Hoagland solution was added to ponds containing water hyacinths which were rated and measured weekly for 4 weeks. The hyacinths accounted for 60–85% of the N removed from solution. Net productivit ...
DOI:
10.1007/s11270-008-9708-x

59. Nutrient requirements of in vitro cultured Halophila ovalis and Posidonia coriacea: nitrogen source

Author:
Wilson, J. G.; Bennett, I. J.
Source:
Plant cell, tissue, and organ culture 2008 v.92 no.2 pp. 155-163
ISSN:
0167-6857
Subject:
nutrient content; in vitro culture; Potamogetonaceae; nitrogen; root hairs; root growth; micropropagation; ammonium nitrate; culture media; aquatic plants
Abstract:
... Axenic cultures of Posidonia coriacea and Halophila ovalis were established to investigate the effect of nitrogen addition and the optimum concentration of MS (Murashige and Skoog Physiol Plant 15:473-497, 1962) macronutrients, micronutrients and organics. Chlorophyll content and dissolved oxygen of H. ovalis was optimal at the control concentration of macronutrients (half strength MS). Below and ...
DOI:
10.1007/s11240-007-9318-0

60. Out of reach

Author:
Seitzinger, Sybil
Source:
Nature 2008 v.452 no.7184 pp. 162-163
ISSN:
0028-0836
Subject:
biogeochemical cycles; nitrates; nitrate nitrogen; denitrification; denitrifying bacteria; nutrient uptake; plant nutrition; aquatic plants; freshwater; water pollution
DOI:
10.1038/452162a

61. Oxidative stress in duckweed (Lemna minor L.) caused by short-term cadmium exposure

Author:
Razinger, J.; Dermastia, M.; Koce, J.D.; Zrimec, A.
Source:
Environmental pollution 2008 v.153 no.3 pp. 687-694
ISSN:
0269-7491
Subject:
plant growth; glutathione; acute toxicity; glutathione-disulfide reductase; catalase; indicator species; ascorbate peroxidase; lipid peroxidation; enzyme activity; dosage; cadmium; resistance mechanisms; Lemna minor; uptake mechanisms; antioxidant activity; metal tolerance; aquatic plants; hyperaccumulators
DOI:
10.1016/j.envpol.2007.08.018
PubMed:
17900769

62. Persistence of spatial variance and spatial pattern in the abundance of a submerged plant

Author:
Raymond H. G. Klaassen; Bart A. Nolet
Source:
Ecology 2008 v.89 no.11 pp. 2973-2979
ISSN:
0012-9658
Subject:
Stuckenia pectinata; aquatic plants; spatial variation; spatial distribution; environmental factors; temporal variation; population dynamics; plant density; dry matter accumulation; Cygnus; herbivores; foraging; regrowth; winter; Netherlands
Abstract:
... Organisms usually benefit from heterogeneous conditions, but, by doing so, may reduce the degree of heterogeneity. The question therefore arises how heterogeneity is maintained. We investigated within‐year spatiotemporal patterns in a monospecific stand of a submerged plant (fennel pondweed, Potamogeton pectinatus), with the novelty that we distinguished between different forms of heterogeneity: s ...
DOI:
10.1890/07-974.1

63. Phenotypic plasticity in response to mechanical stress: hydrodynamic performance and fitness of four aquatic plant species

Author:
Sara Puijalon; Jean‐Paul Léna; Nicolas Rivière; Jean‐Yves Champagne; Jean‐Claude Rostan; Gudrun Bornette
Source:
new phytologist 2008 v.177 no.4 pp. 907-917
ISSN:
0028-646X
Subject:
aquatic plants; habitats; hydrodynamics; mechanical stress; phenotypic plasticity; prediction; sexual reproduction; water treatment
Abstract:
... • Plastic responses of plants exposed to mechanical stress can lead to modified, performance‐enhancing, morphologies, sometimes accompanied by costs to reproduction. The capacity to present short‐term plastic responses to current stress, the resulting performance (expected lower mechanical forces), and the costs of such responses to reproduction were tested for four aquatic plant species. • Two ra ...
DOI:
10.1111/j.1469-8137.2007.02314.x
PubMed:
18275493

64. Phenotypic responses to water flow and wave exposure in aquatic plants

Author:
Agnieszka Gałka; Józef Szmeja
Source:
Acta Societatis Botanicorum Poloniae 2008 v.77 no.1 pp. 59-65
ISSN:
0001-6977
Subject:
Chara; Juncus bulbosus; Nymphoides peltata; Salvinia natans; Spirodela polyrhiza; Stuckenia pectinata; aquatic plants; biomass; environmental factors; lakes; oxen; phenotype; reproduction; rivers; sporangia; water flow; Poland
Abstract:
... Plastic responses of 10 aquatic plant species from 5 rivers and 5 lakes in NW Poland were examined. Chara fragilis, C. delicatula, Potamogeton pectinatus, P. perfoliatus, P. natans, Spirodela polyrhiza, Hydrocharis morsus-ranae, Salvinia natans, Nymphoides peltata and Juncus bulbosus were the subject of research. In the running water of rivers, rhizophytes were generally bigger and they allocated ...
DOI:
10.5586/asbp.2008.009

65. Phosphorus dynamics and productivity in a sewage-impacted lowland chalk stream

Author:
Palmer-Felgate, Elizabeth J.; Jarvie, Helen P.; Williams, Richard J.; Mortimer, Robert J.G.; Loewenthal, Matthew; Neal, Colin
Source:
Journal of hydrology 2008 v.351 no.1-2 pp. 87-97
ISSN:
0022-1694
Subject:
aquatic plants; carbon dioxide; chalk; chlorophyll; dissolved oxygen; diurnal variation; lowlands; phosphorus; photosynthesis; seasonal variation; sewage effluent; sewage treatment; solar radiation; streams; water temperature
Abstract:
... Hourly in situ phosphorus, conductivity, turbidity, dissolved oxygen, pH, and chlorophyll measurements were collected from January 2004 to November 2006 for the River Kennet, 2km downstream of a sewage effluent inlet. Excess carbon dioxide pressure (EpCO₂) was calculated from continuous pH and spot alkalinity measurements. EpCO₂ and dissolved oxygen were used to estimate rates of photosynthesis an ...
DOI:
10.1016/j.jhydrol.2007.11.036

66. Photoprotective role of inflorescence and UV-radiation effects on pollen viability of different freshwater plants

Author:
Rafael M. Conde-Álvarez; Félix L. Figueroa; Elena Bañares-España; José M. Nieto-Caldera
Source:
Aquatic sciences 2008 v.70 no.1 pp. 57-64
ISSN:
1015-1621
Subject:
Ruppia; absorbance; aquatic plants; freshwater; leaves; photosynthetically active radiation; pollen; pollination; surface water; ultraviolet radiation; viability; wavelengths
Abstract:
... The possible protective role against ultraviolet (UV) radiation of the sheathing leaves that wrap the young flowers of Ruppia drepanensis and Althenia orientalis was assessed. The effects of UV radiation on the viability of their pollen grains and those of R. maritima were also analysed. The absorption of the sheathing leaves of R. depranensis for visible and UV wavelengths was analysed using a sp ...
DOI:
10.1007/s00027-007-0933-y

67. Phytoextraction of cadmium by Ipomoea aquatica (water spinach) in hydroponic solution: Effects of cadmium speciation

Author:
Wang, Kai-Sung; Huang, Lung-Chiu; Lee, Hong-Shen; Chen, Pai-Ye; Chang, Shih-Hsien
Source:
Chemosphere 2008 v.72 no.4 pp. 666-672
ISSN:
0045-6535
Subject:
water pollution; cadmium; wastewater; chemical speciation; phytoremediation; Ipomoea aquatica; aquatic plants; bioaccumulation; roots; shoots; root growth; phytotoxicity; nonionic surfactants; EDTA (chelating agent)
DOI:
10.1016/j.chemosphere.2008.03.034
PubMed:
18471856

68. Predicting invasiveness in exotic species: do subtropical native and invasive exotic aquatic plants differ in their growth responses to macronutrients

Author:
Hastwell, Graeme T.; Daniel, Andrew J.; Vivian-Smith, Gabrielle
Source:
Diversity & distributions 2008 v.14 no.2 pp. 243-251
ISSN:
1366-9516
Subject:
Cyperus papyrus; aquatic plants; biomass; indigenous species; introduced species; invasive species; nutrients; prediction; surface area; urbanization; watersheds
Abstract:
... We investigated whether plasticity in growth responses to nutrients could predict invasive potential in aquatic plants by measuring the effects of nutrients on growth of eight non-invasive native and six invasive exotic aquatic plant species. Nutrients were applied at two levels, approximating those found in urbanized and relatively undisturbed catchments, respectively. To identify systematic diff ...
DOI:
10.1111/j.1472-4642.2007.00367.x

69. Respiration of turions and winter apices in aquatic carnivorous plants

Author:
Lubomír Adamec
Source:
Biologia 2008 v.63 no.4 pp. 515-520
ISSN:
1336-9563
Subject:
Utricularia; aquatic plants; carnivores; carnivorous plants; leaves; overwintering; oxygen; respiratory rate; shoots; spring; sprouting
Abstract:
... Basic respiration characteristics were measured in turions of six aquatic plant species differing greatly in their ecological and overwintering characteristics both before and after overwintering, i.e., in dormant and non-dormant state: non-carnivorous Hydrocharis morsus-ranae and Caldesia parnassifolia and carnivorous Aldrovanda vesiculosa, Utricularia australis, U. ochroleuca, and U. bremii, and ...
DOI:
10.2478/s11756-008-0073-4

70. Response of wetland plant communities to inundation within floodplain landscapes

Author:
Alexander, Patricia; Nielsen, Daryl L.; Nias, Deborah
Source:
Ecological management & restoration 2008 v.9 no.3 pp. 187-195
ISSN:
1442-7001
Subject:
aquatic plants; biodiversity; drying; floodplains; floods; indigenous species; introduced species; landscapes; plant communities; rivers; spring; summer; wetland plants; wetlands; Australia
Abstract:
... Many floodplain wetlands in south-eastern Australia have become isolated from the main river channel as a consequence of reduced high flows and associated flood events following river regulation. In the Central Murray region of south-eastern Australia, many temporary wetlands would have received water once every five years or so, with large floods maintaining floodplain connectivity every decade, ...
DOI:
10.1111/j.1442-8903.2008.00417.x

71. Restoration options for potential persistence of submersed aquatic vegetation: combining ecological, hydrodynamic and sediment transport modelling

Author:
BEST, ELLY P.H.; TEETER, ALLEN M.; LANDWEHR, KEVIN J.; JAMES, WILLIAM F.; NAIR, SHYAM K.
Source:
Freshwater biology 2008 v.53 no.4 pp. 814-826
ISSN:
0046-5070
Subject:
Stuckenia pectinata; Vallisneria americana; aquatic plants; environmental factors; hydrodynamics; lakes; models; sediment transport; spring; total suspended solids; turbidity; water flow; United States
Abstract:
... 1. Restoration of shallow turbid lakes to promote growth of submersed aquatic vegetation (SAV) requires knowledge of the environmental factors affecting SAV growth and persistence, and a means to predict the success of SAV reestablishment under different management scenarios to improve these environmental conditions. We used a dynamic ecological modelling approach relating SAV responses to changes ...
DOI:
10.1111/j.1365-2427.2007.01932.x

72. Scutifolium jordanicum gen. et sp. nov. (Cabombaceae), an aquatic fossil plant from the Lower Cretaceous of Jordan, and the relationships of related leaf fossils to living genera

Author:
Taylor, David Winship; Brenner, Gilbert J.; Basha, Sa'd Hasan
Source:
American journal of botany 2008 v.95 no.3 pp. 340-352
ISSN:
0002-9122
Subject:
Cabombaceae; aquatic plants; family studies; fossils; new species; petioles; phylogeny; stems; Jordan
Abstract:
... A new species of aquatic plant, Scutifolium jordanicum gen. et sp. nov., Taylor, Brenner & Basha, is described from the Albian of Jordan. The leaves are microphyllous with a symmetrical, elliptical to suborbiculate shape, convex to rounded apex and base, and actinodromous to palinactinodromous primary venation. The peltate, centrally attached petioles are narrow, elongate, and alternately arranged ...
DOI:
10.3732/ajb.95.3.340
PubMed:
21632359

73. Seagrass on the edge: Land-use practices threaten coastal seagrass communities in Sabah, Malaysia

Author:
Freeman, A.S.; Short, F.T.; Isnain, I.; Razak, F.A.; Coles, R.G.
Source:
Biological conservation 2008 v.141 no.12 pp. 2993-3005
ISSN:
0006-3207
Subject:
coastal water; plant communities; land use change; anthropogenic activities; environmental impact; Halophila; aquatic plants; water temperature; sediments; biomass; light intensity; satellites; sediment transport; deforestation; environmental monitoring; Malaysia
Abstract:
... Seagrass meadows are susceptible to coastal environmental impacts and serve as early indicators of system-wide degradation. Two SeagrassNet monitoring sites were established in Sabah (Malaysia) in 2001 in the Tunku Abdul Rahman National Park: one a pristine, reference site and one anticipating impacts from nearby, ongoing waterfront development. At both sites, percent cover of all seagrass species ...
DOI:
10.1016/j.biocon.2008.09.018

74. Seasonal variation of metal accumulation and translocation in yellow pond-lily (Nuphar lutea)

Author:
Fatih Duman; Olcay Obali
Source:
Chemical speciation and bioavailability 2008 v.20 no.3 pp. 181-190
ISSN:
0954-2299
Subject:
Nuphar lutea; aquatic plants; cadmium; chromium; copper; heavy metals; lakes; lead; manganese; nickel; phytoaccumulation; seasonal variation; sediments; spring; summer; wildlife; zinc; Turkey (country)
Abstract:
... Heavy metal bioaccumulation and translocation properties of aquatic plants are interesting because of their potential use in phytoextraction. However, there is not enough knowledge about the seasonal changes of the metal distribution properties of aquatic plants. Our study focused on seasonal variation of some heavy metals in relation to their bioaccumulation and translocation in Nuphar lutea, a f ...
DOI:
10.3184/095422908X347214

75. Spatial and temporal changes of hydrogeochemistry in ancient tank cascade systems in Sri Lanka: evidence for a constructed wetland

Author:
Mahatantila, Kushani; Chandrajith, Rohana; Jayasena, H.A.H.; Ranawana, K.B.
Source:
Water and environment journal 2008 v.22 no.1 pp. 17-24
ISSN:
1747-6585
Subject:
alkalinity; anthropogenic activities; aquatic plants; basins; calcium; chlorides; constructed wetlands; electrical conductivity; hydrochemistry; iron; irrigation systems; magnesium; manganese; monitoring; nitrates; nitrites; pH; phosphates; pollutants; potassium; sodium; sulfates; tanks; temporal variation; water pollution; water quality; water treatment; Sri Lanka
Abstract:
... The tank cascade system (TCS) in Sri Lanka is one of the most advanced water-conveyance mechanisms among the medieval hydraulic civilizations in the world. In this study, temporal and spatial variations of the hydrogeochemistry of a small cascade system were investigated. A cascade system at Malagane in the Deduru Oya basin, located in the north-west of Sri Lanka, was selected. Measurements of pH, ...
DOI:
10.1111/j.1747-6593.2007.00077.x

76. Temperature-dependent changes of cell shape during heterophyllous leaf formation in Ludwigia arcuata (Onagraceae)

Author:
Sato, Masashi; Tsutsumi, Maki; Ohtsubo, Akane; Nishii, Kanae; Kuwabara, Asuka; Nagata, Toshiyuki
Source:
Planta 2008 v.228 no.1 pp. 27-36
ISSN:
0032-0935
Subject:
Ludwigia; aquatic plants; cell growth; ethylene; leaves; shoots; temperature
Abstract:
... Although elongation of epidermal cells in submerged leaves is thought to be a common feature of heterophyllous aquatic plants, such elongation has not been observed in Ludwigia arcuata Walt. (Onagraceae). In this study we found that reduced culture temperature induced the elongation of epidermal cells of submerged leaves in L. arcuata. Since such submerged leaves also showed a reduction in the num ...
DOI:
10.1007/s00425-008-0715-3
PubMed:
18309514

77. Thiol metabolism and antioxidant systems complement each other during arsenate detoxification in Ceratophyllum demersum L

Author:
Mishra, Seema; Srivastava, Sudhakar; Tripathi, Rudra D.; Trivedi, Prabodh K.
Source:
Aquatic toxicology 2008 v.86 no.2 pp. 205-215
ISSN:
0166-445X
Subject:
water pollution; plant growth; bioaccumulation; Ceratophyllum demersum; arsenic; metabolic detoxification; phytoremediation; antioxidant activity; toxicity; enzyme activity; chelation; thiols; aquatic plants; oxidative stress
Abstract:
... Ceratophyllum demersum L. is known to be a potential accumulator of arsenic (As), but mechanisms of As detoxification have not been investigated so far. In the present study, we analyzed the biochemical responses of Ceratophyllum plants to arsenate (AsV; 0-250μM) exposure to explore the underlying mechanisms of As detoxification. Plants efficiently tolerated As toxicity up to concentrations of 50μ ...
DOI:
10.1016/j.aquatox.2007.11.001

78. Thiol peptides induction in the seagrass Thalassia testudinum (Banks ex König) in response to cadmium exposure

Author:
Alvarez-Legorreta, Teresa; Mendoza-Cozatl, David; Moreno-Sanchez, Rafael; Gold-Bouchot, Gerardo
Source:
Aquatic toxicology 2008 v.86 no.1 pp. 12-19
ISSN:
0166-445X
Subject:
cadmium; water pollution; thiols; peptides; heavy metals; bioaccumulation; aquatic plants; plant tissues; translocation (plant physiology)
Abstract:
... Trace metal accumulation and thiol compounds synthesis as induced by cadmium exposure was studied in the seagrass Thalassia testudinum. Shoots were exposed for 24, 48, 96 and 144h to several CdCl₂ concentrations (0, 30, 50 and 70μM). Levels of cadmium, cysteine, glutathione (GSH), γ-glutamylcysteine (γ-EC), and phytochelatin-like peptides were determined in green blades, live sheaths and root/rhiz ...
DOI:
10.1016/j.aquatox.2007.09.001

79. Toxicity and removal of pesticides by selected aquatic plants

Author:
Olette, R.; Couderchet, M.; Biagianti, S.; Eullaffroy, P.
Source:
Chemosphere 2008 v.70 no.8 pp. 1414-1421
ISSN:
0045-6535
Subject:
copper sulfate; water pollution; bioaccumulation; copper; phytotoxicity; fungicides; Elodea canadensis; herbicide residues; phytoremediation; Lemna minor; fungicide residues; aquatic plants; Cabomba
DOI:
10.1016/j.chemosphere.2007.09.016
PubMed:
17980900

80. Transfer and behaviour of ¹³⁷Cs in two Finnish lakes and their catchments

Author:
Saxén, Ritva; Ilus, Erkki
Source:
Science of the total environment 2008 v.394 no.2-3 pp. 349-360
ISSN:
0048-9697
Subject:
lakes; watersheds; water pollution; sediment contamination; soil pollution; cesium; radionuclides; runoff; vegetation; aquatic plants; chemical constituents of plants; fish; bioaccumulation; indicator species; Finland
Abstract:
... The long-term behaviour of ¹³⁷Cs was studied in two freshwater ecosystems in southern Finland in an area most loaded by the Chernobyl fallout in 1986. Samples were taken from water, sediments, aquatic plants and fish in the lakes and from soil, mushrooms and seed plants in the catchments. The activity concentrations of ¹³⁷Cs in fish have remained at a relatively high level and decreased much more ...
DOI:
10.1016/j.scitotenv.2008.01.048

81. Universal chlorophyll equations for estimating chlorophylls a, b, c, and d and total chlorophylls in natural assemblages of photosynthetic organisms using acetone, methanol, or ethanol solvents

Author:
R. J. Ritchie
Source:
Photosynthetica 2008 v.46 no.1 pp. 115-126
ISSN:
0300-3604
Subject:
acetone; polystyrenes; detection limit; ethanol; methanol; assays; equations; algorithms; solvents; extracts; mixtures; chlorophyll; autotrophs; aquatic plants
Abstract:
... A universal set of equations for determining chlorophyll (Chl) a, accessory Chl b, c, and d, and total Chl have been developed for 90 % acetone, 100 % methanol, and ethanol solvents suitable for estimating Chl in extracts from natural assemblages of algae. The presence of phaeophytin (Ph) a not only interferes with estimates of Chl a but also with Chl b and c determinations. The universal algorith ...
DOI:
10.1007/s11099-008-0019-7

82. Use of toxicity identification evaluations to determine the pesticide mitigation effectiveness of on-farm vegetated treatment systems

Author:
Hunt, John; Anderson, Brian; Phillips, Bryn; Tjeerdema, Ron; Largay, Bryan; Beretti, Melanie; Bern, Amanda
Source:
Environmental pollution 2008 v.156 no.2 pp. 348-358
ISSN:
0269-7491
Subject:
pesticides; toxicity testing; farms; agricultural runoff; chemical analysis; water pollution; sediment contamination; aquatic plants; bioremediation; California
Abstract:
... Evidence of ecological impacts from pesticide runoff has prompted installation of vegetated treatment systems (VTS) along the central coast of California, USA. During five surveys of two on-farm VTS ponds, 88% of inlet and outlet water samples were toxic to Ceriodaphnia dubia. Toxicity identification evaluations (TIEs) indicated water toxicity was caused by diazinon at VTS-1, and chlorpyrifos at V ...
DOI:
10.1016/j.envpol.2008.02.004
PubMed:
18358576

83. Using the aquatic macrophyte Vallisneria americana (wild celery) as a nutrient bioindicator

Author:
Emily R. Benson; Judith M. O’Neil; William C. Dennison
Source:
Hydrobiologia 2008 v.596 no.1 pp. 187-196
ISSN:
0018-8158
Subject:
Vallisneria americana; animal wastes; aquatic plants; celery; ecosystems; freshwater; humans; indicator species; lakes; monitoring; nitrogen; plant tissues; pollution load; population density; rivers; sewage; stable isotopes; watersheds; United States
Abstract:
... Human sewage and septic waste are significant sources of nutrient loading to many aquatic ecosystems. Ecologically relevant nitrogen sources can be traced by analyzing nitrogen stable isotope ratios (δ¹⁵N signatures) in aquatic plants. Elevated δ¹⁵N signatures can suggest increased uptake of nitrogen derived from human and/or animal waste. In the current study, Vallisneria americana, a freshwater ...
DOI:
10.1007/s10750-007-9095-0

84. Using the landscape morphometric context to resolve spatial patterns of submerged macrophyte communities in a fluvial lake

Author:
Léonard, Rosalie; Legendre, Pierre; Jean, Martin; Bouchard, André
Source:
Landscape ecology 2008 v.23 no.1 pp. 91-105
ISSN:
0921-2973
Subject:
Butomus umbellatus; Chara; Myriophyllum; Potamogeton; Vallisneria americana; aquatic plants; ecosystems; environmental factors; lakes; landscapes; morphometry; plant communities; vegetation; wind
Abstract:
... This study investigates the spatial heterogeneity of macrophyte communities in a fluvio-lacustrine landscape. We analysed the importance of the geomorphological point/bay pattern in structuring aquatic plant assemblages inside a 20-km-long littoral segment of a large fluvial lake. The abundance of 21 macrophyte species was surveyed in 232 quadrats along 24 transects perpendicular to the lakeshore. ...
DOI:
10.1007/s10980-007-9168-5

85. Variable toxicity for ionic liquid-forming chemicals to Lemna minor and the influence of dissolved organic matter

Author:
Larson, J.H.; Frost, P.C.; Lamberti, G.A.
Source:
Environmental toxicology and chemistry 2008 v.27 no.3 pp. 676-681
ISSN:
0730-7268
Subject:
water pollution; dissolved organic matter; dose response; ecotoxicology; humic acids; cations; pollutants; structure-activity relationships; Lemna minor; root growth; toxicity testing; molecular weight; aquatic plants
DOI:
10.1897/06-540.1

86. Vegetation-environment relationships in the alderwood communities of Caspian lowlands, N. Iran (toward an ecological classification)

Author:
Naqinezhad, Alireza; Hamzeh'ee, Behnam; Attar, Farideh
Source:
Flora 2008 v.203 no.7 pp. 567-577
ISSN:
0367-2530
Subject:
lowland forests; Alnus glutinosa; water table; soil physical properties; soil chemical properties; principal component analysis; environmental models; forest soils; aquatic plants; calcium carbonate; plant ecology; geomorphology; forest ecosystems; Iran
Abstract:
... Hyrcanian (Caspian) lowland forests (northern Iran) include alderwood communities, dominated by Alnus glutinosa ssp. barbata. A data set of these alderwoods, including floristic relevés and environmental variables (groundwater level, soil physical and chemical properties from two depths) was analyzed in order to describe the relationships between floristic composition and environmental variables. ...
DOI:
10.1016/j.flora.2007.09.007

87. Water nutrient concentrations in channels in relation to occurrence of aquatic plants: a case study in eastern Croatia

Author:
Kočić, Aleksandra; Hengl, Tomislav; Horvatić, Janja
Source:
Hydrobiologia 2008 v.603 no.1 pp. 253-266
ISSN:
0018-8158
Subject:
Glyceria maxima; Lemna trisulca; Riccia; Stuckenia pectinata; aquatic plants; case studies; chlorides; geostatistics; habitats; kriging; models; monitoring; nitrates; nutrient content; nutritive value; pH; phosphorus; pollution load; principal component analysis; regression analysis; sulfates; vegetation; water quality; Croatia
Abstract:
... In this paper we analyzed nutrient concentration in the channels of eastern Croatia and investigated whether certain plant species and associations can be used as direct estimators of water quality. One hundred and twenty-two channel sites were visited and water samples taken for laboratory analysis (pH and concentrations of sulfate, chloride, ammonium, nitrate, and total phosphorus). At each site ...
DOI:
10.1007/s10750-007-9276-x

88. Wetlands as barriers: effects of vegetated waterways on downstream dispersal of zebra mussels

Author:
BODAMER, BETSY L.; BOSSENBROEK, JONATHAN M.
Source:
Freshwater biology 2008 v.53 no.10 pp. 2051-2060
ISSN:
0046-5070
Subject:
adults; aquatic ecosystems; aquatic plants; constructed wetlands; invasive species; lakes; mussels; rivers; stream flow; streams; vegetated waterways; vegetation; Michigan
Abstract:
... 1. Stream flow is a major vector for zebra mussel spread among inland lakes. Veligers have been found tens to hundreds of km from upstream source lakes in unvegetated stream and river systems. It has been suggested, however, that the downstream transport of zebra mussels is restricted by wetland ecosystems. We hypothesized that vegetated waterways, (i.e. wetland streams) would hinder the downstrea ...
DOI:
10.1111/j.1365-2427.2008.02027.x

89. The distribution and the abundance of hydrophytes along the Danube River in Serbia

Author:
Dragana Vukov; Pal Boža; Ružica Igić; Goran Anačkov
Source:
Open life sciences 2008 v.3 no.2 pp. 177-187
ISSN:
2391-5412
Subject:
aquatic plants; hydrology; power plants; rivers; species diversity; Danube River; Serbia
Abstract:
... The Danube River runs through Serbia with flow 588 km long. Different hydrological, geological and ecological conditions occuring along the Danube in Serbia enables its division into four sections: The upper region, Đerdap I accumulation, Đerdap II accumulation, and the lower region. Each section is characterized by unique plant species diversity, frequency of occurrence and distribution pattern. ...
DOI:
10.2478/s11535-007-0048-4

90. The evolutionary maintenance of sexual reproduction: evidence from the ecological distribution of asexual reproduction in clonal plants

Author:
Silvertown, J.
Source:
International journal of plant sciences 2008 v.169 no.1 pp. 157-168
ISSN:
1058-5893
Subject:
evolution; plant reproduction; plant genetics; plant ecology; genetic variation; aquatic plants
DOI:
10.1086/523357

91. The influence of light on the growth of watercress (Nasturtium officinale R. Br.)

Author:
Going, Barbara; Simpson, Juliet; Even, Thomas
Source:
Hydrobiologia 2008 v.607 no.1 pp. 75-85
ISSN:
0018-8158
Subject:
Nasturtium officinale; acclimation; aquatic plants; biomass; canopy; carbon; chlorophyll; ecosystems; greenhouse experimentation; leaf area; light intensity; nitrogen; photoperiod; photosynthesis; physiological response; roots; seedlings; solar radiation; streams; surface area; temporal variation; trophic relationships; watercress
Abstract:
... In stream ecosystems, the growth of aquatic primary producers is affected by spatial and temporal variations in the riparian canopy, which can influence the availability of light resources. Aquatic plants can acclimate to low light environments by employing a suite of morphological or physiological mechanisms to increase light capture or photosynthetic efficiency. Some species may also use alterna ...
DOI:
10.1007/s10750-008-9368-2

92. The polycyclic aromatic hydrocarbon phenanthrene causes oxidative stress and alters polyamine metabolism in the aquatic liverwort Riccia fluitans L

Author:
BURRITT, DAVID JOHN
Source:
Plant, cell and environment 2008 v.31 no.10 pp. 1416-1431
ISSN:
0140-7791
Subject:
polyamines; S-adenosylmethionine; oxidative stress; phenanthrenes; aquatic environment; Riccia; aerobiosis; pollutants; arginine decarboxylase; plasma membrane; mosses and liverworts; enzyme activity; enzyme inhibition; aquatic plants; antioxidants; chloroplasts
Abstract:
... The polycyclic aromatic hydrocarbon (PAH) phenanthrene (PHEN) is a highly toxic pollutant, commonly found in aquatic environments, the effects of which on aquatic plants have not been studied in depth. As PAHs are known to induce oxidative stress and recent studies have shown that polyamines (PAs) participate in the defence reactions protecting plants against environmental stresses, PA metabolism ...
DOI:
10.1111/j.1365-3040.2008.01846.x
PubMed:
18643958