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You searched for: Publication Year 2008 Remove constraint Publication Year: 2008 Subject anthropogenic activities Remove constraint Subject: anthropogenic activities Subject aquatic habitat Remove constraint Subject: aquatic habitat
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1. Environmental Monitoring of Spatio-temporal Changes Using Remote Sensing and GIS in a Mediterranean Wetland of Northern Greece

Author:
Papastergiadou, E. S.; Retalis, A.; Apostolakis, A.; Georgiadis, Th.
Source:
Water resources management 2008 v.22 no.5 pp. 579-594
ISSN:
0920-4741
Subject:
Phragmites australis; aerial photography; anthropogenic activities; aquatic habitat; case studies; computer software; ecosystems; environmental factors; environmental monitoring; freshwater; geographic information systems; humans; lakes; land cover; land use change; peat; remote sensing; temporal variation; water management; water quality; watersheds; wetlands; Greece; Mediterranean region
Abstract:
... Loss and degradation of terrestrial and aquatic habitats and degraded water quality are major environmental concerns worldwide. Especially wetlands are sensitive ecosystems that are subject to stress from human activities. Remote sensing techniques have been primarily used to generate information on land cover/use changes. Geographical Information Systems (GIS) and remote sensing can be used to pr ...
DOI:
10.1007/s11269-007-9179-7

2. The rapid effects of a whole-lake reduction of coarse woody debris on fish and benthic macroinvertebrates

Author:
HELMUS, MATTHEW R.; SASS, GREG G.
Source:
Freshwater biology 2008 v.53 no.7 pp. 1423-1433
ISSN:
0046-5070
Subject:
Perca flavescens; anthropogenic activities; aquatic ecosystems; aquatic habitat; basins; biodiversity; coarse woody debris; community structure; fish; fish communities; habitat destruction; lakes; littoral zone; macroinvertebrates; nutrients; riparian forests; shorelines; subsidies; trees; Wisconsin
Abstract:
... 1. Ecosystems can enhance the biodiversity of adjacent ecosystems through subsidies of prey, nutrients and also habitat. For example, trees can fall into aquatic ecosystems and act as a subsidy that increases aquatic habitat heterogeneity. This habitat subsidy is vulnerable in lakes where anthropogenic development of shorelines coincides with a thinning of riparian forests and the removal of these ...
DOI:
10.1111/j.1365-2427.2008.01974.x

3. A test of the species–people correlation for stream macro‐invertebrates in european countries

Author:
Marco Pautasso; Diego Fontaneto
Source:
Ecological applications 2008 v.18 no.8 pp. 1842-1849
ISSN:
1051-0761
Subject:
limnology; Ephemeroptera; water quality; humans; plant communities; air temperature; biogeography; streams; spatial data; species diversity; population density; anthropogenic activities; aquatic habitat; Trichoptera; aquatic insects; Plecoptera; Europe
Abstract:
... Many recent studies have shown that over large scales there are positive correlations between plant and vertebrate species richness and human population presence. It is unknown whether this pattern applies also to Ephemeroptera (mayflies), Plecoptera (stoneflies), and Trichoptera (caddisflies) (EPT), which are common bio‐indicators of the naturalness of streams. Most local studies report higher sp ...
DOI:
10.1890/07-2047.1
PubMed:
19263882

4. 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

5. Changes in the dissolved nitrogen pool across land cover gradients in wisconsin streams

Author:
Emily H. Stanley; Jeffrey T. Maxted
Source:
Ecological applications 2008 v.18 no.7 pp. 1579-1590
ISSN:
1051-0761
Subject:
aquatic habitat; ecosystems; eutrophication; nitrogen; nutrient availability; streams; anthropogenic activities; urban areas; land use; agricultural land; forests; wetlands; leaching; nitrate nitrogen; ammonium nitrogen; nitrogen dioxide; ecotoxicology; Wisconsin
Abstract:
... Increases in anthropogenic nitrogen fixation have resulted in wide‐scale enrichment of aquatic ecosystems. Existing biogeochemical theory suggests that N enrichment is associated with increasing concentrations of nitrate; however, dissolved organic nitrogen (DON) is often a major component of the total dissolved nitrogen (TDN) pool in streams and rivers, and its concentration can be significantly ...
DOI:
10.1890/07-1379.1
PubMed:
18839755

6. The Kingdom of the Shore: Achievement of Good Ecological Potential in Reservoirs

Author:
Moss Brian
Source:
Freshwater reviews 2008 v.1 no.1 pp. 29-42
ISSN:
1755-084X
Subject:
anthropogenic activities; aquatic habitat; biodiversity; lakes; laws and regulations; littoral zone; rivers
Abstract:
... The European Water Framework Directive requires member states to restore aquatic habitats to good ecological status (quality) by 2015. Good ecological status is defined as slightly different from high status, which, according to the Directive, means negligible human influence. This poses problems enough for restoration of natural habitats but artificial reservoirs are not excluded from the Directi ...
DOI:
10.1608/FRJ-1.1.2

7. An experimental disturbance alters fish size structure but not food chain length in streams

Author:
Annika W. Walters; David M. Post
Source:
Ecology 2008 v.89 no.12 pp. 3261-3267
ISSN:
0012-9658
Subject:
food webs; simulation models; stream flow; streams; freshwater fish; dams (hydrology); anthropogenic activities; spatial variation; aquatic habitat; population structure; population dynamics; Connecticut
Abstract:
... Streams experience frequent natural disturbance and are undergoing considerable anthropogenic disturbance due to dam construction and water diversion. Disturbance is known to impact community structure, but its effect on food chain length is still a matter of considerable debate. Theoretical models show that longer food chains are less resilient to disturbance, so food chain length is predicted to ...
DOI:
10.1890/08-0273.1