A Study Of Diversity And Community Comparison Indices By Bioassay Of Copper Using Colonized Benthic Macroinvertebrates

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A Study of Diversity and Community Comparison Indices by Bioassay of Copper Using Colonized Benthic Macroinvertebrates

Author : Jimmy Lee Perkins
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (998 download)

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Book Synopsis A Study of Diversity and Community Comparison Indices by Bioassay of Copper Using Colonized Benthic Macroinvertebrates by : Jimmy Lee Perkins

Download or read book A Study of Diversity and Community Comparison Indices by Bioassay of Copper Using Colonized Benthic Macroinvertebrates written by Jimmy Lee Perkins and published by . This book was released on 1981 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of five community comparison indices were varied at day 14 but by day 28 the results indicated a clear, nearly monotonic, trend due to copper impact. It was assumed that day 28 observations, though probably still changing, were nearer stability than at day 14 and therefore more representative of natural conditions. The changes in community comparison indices showed good agreement at 28 days and reflected the general decline in species and individuals. No single community comparison index could be set apart as superior to the others.

Dissertation Abstracts International

Author :
Publisher :
ISBN 13 :
Total Pages : 524 pages
Book Rating : 4.F/5 ( download)

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Download or read book Dissertation Abstracts International written by and published by . This book was released on 1982 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Comprehensive Dissertation Index

Author :
Publisher :
ISBN 13 :
Total Pages : 792 pages
Book Rating : 4.F/5 ( download)

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Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1984 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ecology Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 902 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Ecology Abstracts written by and published by . This book was released on 1984 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.

Aquatic Sciences and Fisheries Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 600 pages
Book Rating : 4.0/5 ( download)

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Download or read book Aquatic Sciences and Fisheries Abstracts written by and published by . This book was released on 1984-04 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

American Doctoral Dissertations

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Publisher :
ISBN 13 :
Total Pages : 552 pages
Book Rating : 4.F/5 ( download)

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Download or read book American Doctoral Dissertations written by and published by . This book was released on 1981 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Selected Water Resources Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 830 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1989 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Selected Water Resources Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 736 pages
Book Rating : 4.0/5 ( download)

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Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1989 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Ecotoxicology of Copper and Zinc: Studies on a Stream Macroinvertebrate Community

Author : Patrick J. Sheehan
Publisher :
ISBN 13 :
Total Pages : 560 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis The Ecotoxicology of Copper and Zinc: Studies on a Stream Macroinvertebrate Community by : Patrick J. Sheehan

Download or read book The Ecotoxicology of Copper and Zinc: Studies on a Stream Macroinvertebrate Community written by Patrick J. Sheehan and published by . This book was released on 1980 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Excerpta Medica

Author :
Publisher :
ISBN 13 :
Total Pages : 824 pages
Book Rating : 4.:/5 (28 download)

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Download or read book Excerpta Medica written by and published by . This book was released on 1984 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Effect of Copper on Benthic Macroinvertebrate Communities of a Stream

Author : Nina Caris
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (266 download)

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Book Synopsis Effect of Copper on Benthic Macroinvertebrate Communities of a Stream by : Nina Caris

Download or read book Effect of Copper on Benthic Macroinvertebrate Communities of a Stream written by Nina Caris and published by . This book was released on 1975 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Communities as Bio-indicators

Author : Katelyn E. Ludwig
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (961 download)

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Book Synopsis Communities as Bio-indicators by : Katelyn E. Ludwig

Download or read book Communities as Bio-indicators written by Katelyn E. Ludwig and published by . This book was released on 2015 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioassessment utilizes biological assemblages to assess ecological condition in disturbed areas. The most popular quantitative evaluation of biological health in streams involves an Index of Biotic Integrity (IBI) for benthic macroinvertebrates (BMIs), which incorporates an assessment of species’ trophic status, abundance, and disturbance sensitivity. Tools similar to the IBI have been developed for riparian vegetation and are used to assess impacts of cattle grazing. The US Forest Service (USFS) Region 5 Range Monitoring Protocol uses proportional dominance of seral groups within riparian plant communities to make assertions regarding habitat quality. The objective of this study was to determine whether the IBI for BMIs and the USFS Range Monitoring Protocol would assess habitat quality in a comparable way when applied to the same sites. Twenty riparian field sites exposed to cattle disturbance were randomly selected to implement each assessment method. IBI metrics and composite IBI scores were calculated and compared to vegetative condition scores. Results indicate that the Range Monitoring Protocol and the IBI for BMIs are not comparable techniques. Each protocol ranked sites contrarily and identified different sites as most and least impaired. NMDS ordination was utilized to assess similarities in community composition between sites and to identify variables correlated with assemblage patterns. Results revealed grazing intensity drives community assemblage patterns for vegetation (R2 = 0.2953, p = 0.0162*) but not for invertebrates (R2 = 0.0027, p = 0.8273). Composition of plant communities under low grazing intensity was strongly correlated with stream bank slope and upland vegetation, which indicates grazing is not the only variable influencing composition. NMDS ordination for vegetative communities depicts an association between high grazing and community diversity and richness, which may provide support for the intermediate disturbance hypothesis. Further study should address the utility of the Range Monitoring Protocol and the extent to which it can be applied to sites with varying abiotic characteristics.

Sediment Classification Methods Compendium

Author : United States. Environmental Protection Agency. Sediment Oversight Technical Committee
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Sediment Classification Methods Compendium by : United States. Environmental Protection Agency. Sediment Oversight Technical Committee

Download or read book Sediment Classification Methods Compendium written by United States. Environmental Protection Agency. Sediment Oversight Technical Committee and published by . This book was released on 1992 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is a compendium of scientifically valid and accepted methods that can be used to assess sediment quality and predict ecological impacts...the intent here is to provide the most useful overall measures or predictors of ecological impacts currently in use rather than procedures that may have limited application outside of a particular regulatory framework... parag The information provided in the compendium on the relative strengths and weaknesses of the different assessment methods can provide assistance in selecting the appropriate methods.

An Evaluation and Comparison of Various Diversity Indices as Illustrated by Portage Creek

Author : Karl Josef Siebert
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (113 download)

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Book Synopsis An Evaluation and Comparison of Various Diversity Indices as Illustrated by Portage Creek by : Karl Josef Siebert

Download or read book An Evaluation and Comparison of Various Diversity Indices as Illustrated by Portage Creek written by Karl Josef Siebert and published by . This book was released on 1984 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Index Medicus

Author :
Publisher :
ISBN 13 :
Total Pages : 1972 pages
Book Rating : 4.:/5 (319 download)

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Download or read book Index Medicus written by and published by . This book was released on 2003 with total page 1972 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.

Water Resources Research Catalog

Author : United States. Office of Water Research and Technology
Publisher :
ISBN 13 :
Total Pages : 1046 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Water Resources Research Catalog by : United States. Office of Water Research and Technology

Download or read book Water Resources Research Catalog written by United States. Office of Water Research and Technology and published by . This book was released on 1976 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with vol. 9, only new and continuing but modified projects are listed. Vols. 8- should be kept as a record of continuing but unchanged projects.

Comparison of Laboratory Microcosms and Field Responses to Copper

Author : MC. Harrass
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Comparison of Laboratory Microcosms and Field Responses to Copper by : MC. Harrass

Download or read book Comparison of Laboratory Microcosms and Field Responses to Copper written by MC. Harrass and published by . This book was released on 1985 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a biological model, a Standardized Aquatic Microcosm has demonstrated trophic interactions and community recovery after pesticide treatment. Daphnia magna were temporarily eliminated by treatment with 0.5 mg/L copper, leading to changes in algal and rotifer densities. Algae were severely affected by treatment with 2.0 mg/L copper, demonstrating altered dominance and productivity. Recovery of treated communities after inactivation or isolation of active toxicant was demonstrated by populations attaining densities equivalent to control communities. Comparison with published studies of natural communities treated with copper indicates that similar trophic interactions have often been demonstrated, although field studies suggested that responses are quite variable.