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You searched for: Journal Botanica marina Remove constraint Journal: Botanica marina Publication Year 2014 Remove constraint Publication Year: 2014 Source 2014 v.57 no.2 Remove constraint Source: 2014 v.57 no.2
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1. Evaluation of repopulation techniques for the giant kelp Macrocystis pyrifera (Laminariales)

Author:
Vásquez, Ximena; Gutiérrez, Alfonso; Buschmann, Alejandro H.; Flores, Roberto; Farías, Daniela; Leal, Pamela
Source:
Botanica marina 2014 v.57 no.2 pp. 123-130
ISSN:
1437-4323
Subject:
Macrocystis pyrifera; biomass; ceramics; forests; harvesting; juveniles; laboratory experimentation; macroalgae; scrubbers; shell (molluscs); sporophytes; Chile
Abstract:
... In Chile, the brown alga Macrocystis pyrifera has been subject to strong harvesting pressure, resulting in severe reduction of natural beds, and a threat to the sustainability of the resource. Repopulation is a possible means for the recovery of overexploited natural populations of M. pyrifera. In this study, we determined density (ind. cm⁻²), length (mm) and biomass (g) of M. pyrifera sporophytes ...
DOI:
10.1515/bot-2014-0005

2. Kinetics of cadmium accumulation and occurrence of dead cells in leaves of the submerged angiosperm Ruppia maritima

Author:
Malea, Paraskevi; Kevrekidis, Theodoros; Mogias, Athanasios; Adamakis, Ioannis-Dimosthenis S.
Source:
Botanica marina 2014 v.57 no.2 pp. 111-122
ISSN:
1437-4323
Subject:
Ruppia maritima; bioaccumulation factor; cadmium; cell death; coastal water; enzyme kinetics; equations; leaves; regression analysis; risk; roots; seagrasses; toxicity
Abstract:
... Cadmium accumulation and leaf cell death in the brackish water-submerged angiosperm Ruppia maritima L. were investigated under laboratory conditions exposed to increasing metal concentrations (2.22–355.88 μm). The Michaelis-Menten equation satisfactorily described accumulation kinetics in plant compartments (leaves, rhizome-stems, roots). Equilibrium concentration and uptake rate generally tended ...
DOI:
10.1515/bot-2013-0081

3. Morphological and molecular characterization of Neoralfsia hancockii comb. nov. (Ralfsiales, Phaeophyceae) from topotype of San José del Cabo, Baja California, Mexico

Author:
León-Álvarez, Daniel; Núñez-Resendiz, Maria L.; Pónce-Márquez, Maria E.
Source:
Botanica marina 2014 v.57 no.2 pp. 139-146
ISSN:
1437-4323
Subject:
Neoralfsia expansa; Ralfsia; probability; Mexico
Abstract:
... To resolve the taxonomic status of Ralfsia hancockii and its relationship to related species, we have carried out a morphological and molecular study (rbcL) on the topotype material of the species. Our analyses, using maximum parsimony and Bayesian posterior probability, located this species in a clade that is distinct and distant from other species of the genus Ralfsia and other genera of the fam ...
DOI:
10.1515/bot-2013-0095

4. Occurrence of the genus Tolypiocladia F. Schmitz (Rhodomelaceae, Rhodophyta) in the Atlantic Ocean

Author:
de Castro Nunes, José Marcos; de Jesus, Priscila Barreto; Caires, Taiara Aguiar; de Beauclair Guimarães, Silvia Maria Pita
Source:
Botanica marina 2014 v.57 no.2 pp. 147-151
ISSN:
1437-4323
Subject:
surveys; coasts; Rhodomelaceae; Brazil; Atlantic Ocean
Abstract:
... A survey of Rhodophyta on the coast of Bahia state, northeast Brazil, revealed new records for the occurrence of a red alga. The specimens were identified as Tolypiocladia glomerulata. We describe the morphological characters of this species and compare them with literature reports of other species belonging to the genus. This is the first record of the genus Tolypiocladia from the Atlantic Ocean. ...
DOI:
10.1515/bot-2013-0091

5. Settlement of Gracilaria gracilis carpospores (Gracilariales, Rhodophyta) on natural substrates from the southwestern Atlantic coast (Chubut, Argentina)

Author:
Hughes, Melanie Hebe; Michetti, Karina Mariel; Leonardi, Patricia Inés
Source:
Botanica marina 2014 v.57 no.2 pp. 131-137
ISSN:
1437-4323
Subject:
Gracilaria; aquaculture; coasts; inoculum; seedlings; spores; thallus; Argentina
Abstract:
... Gracilaria gracilis is an important agarophyte that is exploited in Argentina by the harvest of detached thalli cast on the shore. Therefore, the study of carpospores is relevant because such spores can be used as inoculum for commercial aquaculture. In this study, the potential of two natural substrates from the Patagonian coast, for the settlement and growth of G. gracilis carpospores, was evalu ...
DOI:
10.1515/bot-2013-0084

6. Spatio temporal and environmental factors influencing macroalgal β diversity in the Red Sea, Egypt

Author:
Issa, Ahmed A.; Hifney, Awatief F.; Abdel-Gawad, Khayria M.; Gomaa, Mohamed
Source:
Botanica marina 2014 v.57 no.2 pp. 99-110
ISSN:
1437-4323
Subject:
anthropogenic activities; data collection; environmental factors; macroalgae; rare species; spatial variation; species diversity; thallus; Egypt; Red Sea
Abstract:
... β Diversity is an ecological concept used to describe the turnover of species across a wide range of spatial and temporal scales, but such knowledge is lacking for macroalgal assemblages of the Red Sea. β Diversity patterns for Red Sea macroalgae were evaluated from different sites (Hurghada, Safaga, and Al-Quseir) and seasons across different environmental disturbances. β Diversity was studied by ...
DOI:
10.1515/bot-2013-0107

7. Latitudinal, seasonal, and small-scale spatial differences of the giant kelp, Macrocystis pyrifera, and an herbivore at their southern range limit in the northern hemisphere

Author:
Beas-Luna, Rodrigo; Ladah, Lydia B.
Source:
Botanica marina 2014 v.57 no.2 pp. 73-83
ISSN:
1437-4323
Subject:
Macrocystis pyrifera; Strongylocentrotus purpuratus; correlation; herbivores; latitude; macroalgae; population structure; probability; seasonal variation; spring; temperature
Abstract:
... Although several studies have described kelp-urchin interactions, little is known about these interactions toward the distributional range limits of these species in areas that may experience different physical conditions than at the center of the distributional range. We explored seasonal and latitudinal changes in the population structure of the giant kelp and the purple sea urchin at their sout ...
DOI:
10.1515/bot-2013-0114

8. Correlative evidence for competition between Fucus serratus and the introduced chlorophyte Codium fragile subsp. fragile on the southwest coast of Norway

Author:
Armitage, Caroline S.; Sjøtun, Kjersti; Jensen, Knut Helge
Source:
Botanica marina 2014 v.57 no.2 pp. 85-97
ISSN:
1437-4323
Subject:
Codium fragile; Fucus serratus; algae; coasts; littoral zone; spatial distribution; Norway
Abstract:
... The distribution of Codium fragile subsp. fragile and the native canopy-forming alga Fucusserratus was recorded at 51 sites in a 20 km long, sheltered region on the southwest coast of Norway. The purpose of the study was to examine if these species are potentially competing and how their distributions are related to wave-exposure and substrate. Codium fragile subsp. fragile was patchily distribute ...
DOI:
10.1515/bot-2013-0087