A Nutrient Biotic Index (NBI) for Use with Benthic Macroinvertebrate Communities and Its Relationship with Surface Water Nutrient Concentrations in Flowing Waters PDF Download
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Author:
Publisher:
ISBN:
Category : Benthic animals
Languages : en
Pages : 90
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Book Description
Author:
Publisher:
ISBN:
Category : Benthic animals
Languages : en
Pages : 90
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Book Description
Author: Alexander J. Smith
Publisher:
ISBN:
Category : Freshwater invertebrates
Languages : en
Pages : 140
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Book Description
Author: Charles Clarence Morris
Publisher: Springer Science & Business Media
ISBN: 9400741294
Category : Medical
Languages : en
Pages : 72
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Book Description
Nutrient Indicator Models for Determining Biologically Relevant Levels: A case study based on the Corn Belt and Northern Great Plain Nutrient Ecoregion is the first book to provide answers to the management of nutrients based on changes in biological communities. The text describes a case study that is the result of a large scale project in the Corn Belt and Great Plains Nutrient Ecoregion. This study is the first to identify relationships between fish assemblages and nutrient concentrations by Nitrogen species. Species optima based on sensitivity and tolerance to nutrients is modeled. Nutrient Biotic indices calibrated for application are based on the results of years of biological indicator development. Test response intervals and Shift response intervals are formulated and validated against relevant biological assemblage shifts. This case study is the first to suggest recommended values for the nitrogen and phosphorus cycle with identifiable shifts caused in biological assemblages. This will provide watershed and environmental managers with the information needed to manage the inputs into the world’s dead zones.
Author: Edward G. Farnworth
Publisher:
ISBN:
Category : Biotic communities
Languages : en
Pages : 336
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Book Description
Author: Mark D. Munn
Publisher: United States Department of the Interior
ISBN: 9781411341838
Category : Biotic communities
Languages : en
Pages : 92
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Book Description
"National Water-Quality Assessment Project."
Author:
Publisher:
ISBN:
Category : Eutrophication
Languages : en
Pages : 258
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Book Description
Author:
Publisher:
ISBN:
Category : Nitrogen
Languages : en
Pages : 58
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Book Description
Author: Christine Wieben
Publisher: CreateSpace
ISBN: 9781500210496
Category : Nutrient pollution of water
Languages : en
Pages : 52
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Book Description
Five streams in the Barnegat Bay-Little Egg Harbor (BB- LEH) watershed in southern New Jersey were sampled for nutrient concentrations and stable isotope composition under base-flow and stormflow conditions, and during the growing and nongrowing seasons, to help quantify and identify sources of nutrient loading. Samples were analyzed for concentrations of total nitrogen, ammonia, nitrate plus nitrite, organic nitro- gen, total phosphorus, and orthophosphate, and for nitrogen and oxygen stable isotope ratios. Concentrations of total nitrogen in the five streams appear to be related to land use, such that streams in subbasins characterized by extensive urban development (and histori- cal agricultural land use)-North Branch Metedeconk and Toms Rivers-exhibited the highest total nitrogen concentra- tions (0.84-1.36 milligrams per liter (mg/L) in base flow). Base-flow total nitrogen concentrations in these two streams were dominated by nitrate; nitrate concentrations decreased during storm events as a result of dilution by storm runoff.
Author: Brian J. Caskey
Publisher: Geological Survey (USGS)
ISBN: 9781411327863
Category : Benthos
Languages : en
Pages : 35
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Book Description
Author: Almo Farina
Publisher: Springer Science & Business Media
ISBN: 1402055358
Category : Science
Languages : en
Pages : 412
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Book Description
Landscape ecology is an integrative and multi-disciplinary science and Principles and Methods in Landscape Ecology reconciles the geological, botanical, zoological and human perspectives. In particular ,new paradigms and theories such as percolation, metapopulation, hierarchies, source-sink models have been integrated in this last edition with the recent theories on bio-complexity, information and cognitive sciences. Methods for studying landscape ecology are covered including spatial geometry models and remote sensing in order to create confidence toward techniques and approaches that require a high experience and long-time dedication. Principles and Methods in Landscape Ecology is a textbook useful to present the landscape in a multi-vision perspective for undergraduate and graduate students of biology, ecology, geography, forestry, agronomy, landscape architecture and planning. Sociology, economics, history, archaeology, anthropology, ecological psychology are some sciences that can benefit of the holistic vision offered by this texbook.
