An Evaluation of Several Ecological and Physiological Indicators Used in Determining the Nutrient Deficiencies of the Natural, Mid-summer Assemblages of Bacteria and Phytoplankton in a Subalpine Lake PDF Download
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Author: Fred Steve Lubnow
Publisher:
ISBN:
Category :
Languages : en
Pages : 344
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Author: Fred Steve Lubnow
Publisher:
ISBN:
Category :
Languages : en
Pages : 344
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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: Phillip E. Greeson
Publisher:
ISBN:
Category : Water quality bioassay
Languages : en
Pages : 34
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Author:
Publisher:
ISBN:
Category : Eutrophication
Languages : en
Pages : 258
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Author:
Publisher: Academic Press
ISBN: 0080526942
Category : Science
Languages : en
Pages : 781
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Book Description
Algae are an important component of aquatic benthic ecosystems because they reflect the health of their environment through their density, abundance, and diversity. This comprehensive and authoritative text is divided into three sections to offer complete coverage of the discussion in this field. The first section introduces the locations of benthic algae in different ecosystems, like streams, large rivers, lakes, and other aquatic habitats. The second section is devoted to the various factors, both biotic and abiotic, that affect benthic freshwater algae. The final section of the book focuses on the role played by algae in a variety of complex freshwater ecosystems. As concern over environmental health escalates, the keystone and pivotal role played by algae is becoming more apparent. This volume in the Aquatic Ecology Series represents an important compilation of the latest research on the crucial niche occupied by algae in aquatic ecosystems. - Presents algae as the important player in relation to environmental health - Prepared by leading authorities in the field - Includes comprehensive treatment of the functions of benthic algae as well as the factors that affect these important aquatic organisms - Acts as an important reference for anyone interested in understanding and managing freshwater ecosystems
Author: David C. Sigee
Publisher: John Wiley & Sons
ISBN: 0470026472
Category : Science
Languages : en
Pages : 516
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Book Description
This unique textbook takes a broad look at the rapidly expanding field of freshwater microbiology. Concentrating on the interactions between viruses, bacteria, algae, fungi and micro-invertebrates, the book gives a wide biological appeal. Alongside conventional aspects such as phytoplankton characterisation, seasonal changes and nutrient cycles, the title focuses on the dynamic and applied aspects that are not covered within the current textbooks in the field. Complete coverage of all fresh water biota from viruses to invertebrates Unique focus on microbial interactions including coverage of biofilms, important communities on all exposed rivers and lakes. New information on molecular and microscopical techniques including a study of gene exchange between bacteria in the freshwater environment. Unique emphasis on the applied aspects of freshwater microbiology with particular emphasis on biodegradation and the causes and remediation of eutrophication and algal blooms.
Author: Intergovernmental Panel on Climate Change. Working Group II.
Publisher: Cambridge University Press
ISBN: 9780521634557
Category : Science
Languages : en
Pages : 532
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Cambridge, UK : Cambridge University Press, 1998.
Author:
Publisher:
ISBN:
Category : Mountain ecology
Languages : en
Pages : 348
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Author: Lesley Clementson
Publisher: Elsevier
ISBN: 012822861X
Category : Science
Languages : en
Pages : 612
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Book Description
Phytoplankton ecology has developed from an understanding of taxonomy, species dynamics and functional roles, and species interactions with the surrounding environment. New and emerging technologies enable a paradigm shift in the ways we monitor and understand phytoplankton in a range of environments. Advances in Phytoplankton Ecology: Applications of Emerging Technologies is a practical guide to these new technologies and explores their application with case studies to show how recent advances have changed our understanding of phytoplankton ecology. Part one of this book explores how traditional taxonomy and species identification has changed, moving from morphological to molecular techniques. Part two explores the new technologies for remote and automatic monitoring and sensor technology and applications for management. Part three explores the explosion of omics techniques and their application in species identification, functional populations, trait characterization, interspecific interactions, and interaction with their environment. This book is an invaluable guide for marine and freshwater ecology researchers to how new technologies can enhance our understanding of ecology. Combines traditional techniques with new technologies and methods Explores the influence of new technology on our understanding of phytoplankton ecology Provides practical applications of each technique through case studies in each chapter
Author: Joop Ringelberg
Publisher: Springer Science & Business Media
ISBN: 904813093X
Category : Science
Languages : en
Pages : 360
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Book Description
Whatever theory may be advanced to explain diurnal migration, the underlying reactions involved must be demonstrated conc- sively in the laboratory before the explanation can be ?nally accepted George L. Clarke 1933 p. 434 In oceans and lakes, zooplankton often make diel vertical migrations (DVM), descending at dawn and coming up again in late afternoon and evening. The small animals cover distances of 10–40 m in lakes or even a few hundred metres in the open oceans. Although not as spectacular as migrations of birds or the massive movements of large mammals over the African savannas, the numbers involved are very large and the biomass exceed the bulk of the African herds. For example, in the Antarctic oceans swarms of “Krill” may cover kilometres across, with thousands of individuals per cubic metre. These Euphausiids are food for whales, the most bulky animals on earth. Zooplankton are key species in the pelagic food web, intermediary between algae and ?sh, and thus essential for the functioning of the pelagic community. Prey for many, they have evolved diverse strategies of survival and DVM is the most imp- tant one. Most ?sh are visually hunting predators and need a high light intensity to detect the often transparent animals. By moving down, the well-lit surface layers are avoided but they have to come up again at night to feed on algae.
