Environmental Factors Affecting the Trophic Ecology of Benthic Suspension Feeders PDF Download
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Author: Sergio Rossi Heras
Publisher:
ISBN:
Category :
Languages : en
Pages : 200
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Book Description
Author: Sergio Rossi Heras
Publisher:
ISBN:
Category :
Languages : en
Pages : 200
Get Book Here
Book Description
Author: Sergio Rossi Heras
Publisher:
ISBN:
Category :
Languages : en
Pages : 200
Get Book Here
Book Description
Author: Sergio Rossi
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659325021
Category :
Languages : en
Pages : 188
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Book Description
Suspension feeders have a paramount role in benthic-pelagic coupling processes. The book explores both the environmental factors affecting its ecology (i.e. seasonal and short time seston dynamics, available food in the water column) and their response to such physical, chemical and biological factors (.e. activity rhythms, diet and capture rates, biochemical balance). The overall study has been made in the Coralligene, a Mediterranean hard-bottom community in which passive suspension feeders (especially gorgonians) are very abundant. Seasonality is described as a key factor to understand potential starvation effects and food constraints in these anthozoans.
Author: Richard F. Dame
Publisher: Springer Science & Business Media
ISBN: 1402030304
Category : Science
Languages : en
Pages : 360
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Book Description
Animals are a major link between the water column (pelagic) and the bottom (benthic) habitats in most shallow systems. This coupling is dominated by active processes such as suspension-feeding in which the organism actively uses energy to pump water that is then filtered to remove suspended particles that are consumed while undigested remains are deposited on the bottom. As a result of this feeding on and metabolism of particles, the animals excrete dissolved inorganic and organic waste back into the water column, and thus, become major components in the cycling and feedback of essential elements. With relatively high weight specific filtration rates of 1— 10 liters/hour/gram dry tissue and a propensity to form large aggregated populations (beds, reefs, schools and swarms), these organisms can play an important role in regulating water column processes Although estuarine bivalve molluscs such as oysters and mussels dominate the suspension-feeder literature, other groups including plankton and nekton that are found in estuarine as well as other aquatic systems are also potentially important removers of suspended particles. Thus, a significant part of the NATO Advanced Research Workshop focused on suspension-feeders as controllers of plankton abundance, biomass and diversity, system metabolism, nutrient cycling and scale dependency. Systems dominated by suspension-feeders are typically impacted by human activities including recreation, aquaculture, human and industrial pollution, and bilge water from shipping. Suspension-feeders are often impacted by fisheries and over-exploitation. These impacts commonly result in changes in ecosystem structure either through the food chain concentration of harmful substances or diseases, the introduction of alien species of suspension-feeders, or the instability of suspension-feeders systems through species displacement or phase shifts in the dominance between different suspension-feeding components such as nekton or zooplankton. These issues were addressed near the close of the workshop along with conclusions and syntheses developed by the working groups.
Author: David Wildish
Publisher: Cambridge University Press
ISBN: 052144523X
Category : Science
Languages : en
Pages : 423
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Book Description
This 1997 book reviews what is known about the biology of suspension feeders in relation to their flow environment.
Author: R. N. Gibson
Publisher: CRC Press
ISBN: 1420006398
Category : Science
Languages : en
Pages : 542
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Book Description
With increasing interest in the field and its relevance in global environmental issues, Oceanography and Marine Biology: An Annual Review provides authoritative reviews that summarize results of recent research in basic areas of marine research, exploring topics of special and topical importance while adding to new areas as they arise. This volume, part of a series that regards the all marine sciences as a complete unit, features contributions from experts involved in biological, chemical, geological, and physical aspects of marine science. Including a full color insert and an extensive reference list, the text is an essential reference for researchers and students in all fields of marine science.
Author:
Publisher: ScholarlyEditions
ISBN: 1490109668
Category : Science
Languages : en
Pages : 1141
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Book Description
Issues in Global Environment—Freshwater and Marine Environments: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Continental Shelf Research. The editors have built Issues in Global Environment—Freshwater and Marine Environments: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Continental Shelf Research in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Global Environment—Freshwater and Marine Environments: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Author: Søren Laurentius Nielsen
Publisher: Springer Science & Business Media
ISBN: 1402030215
Category : Science
Languages : en
Pages : 315
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Book Description
It is a well-known fact that eutrophication of coastal waters causes significant changes in the species composition of the primary producers. Usually a shift from an ecosystem dominated by sea grasses or large brown algae to an ecosystem dominated by fast-growing green algae or phytoplankton is observed. While this shift has been documented in a number of research papers and books, the consequences of this shift are less well known. This book focuses on the consequences of such changes for nutrient cycling. The aim is to investigate how different types of primary producers influence nutrient cycling in coastal marine waters, and how nutrient cycling changes qualitatively and quantitatively as a consequence of the changes in the primary producer community caused by eutrophication. The various chapters address specific ecological processes such as grazing, decomposition, burial and export of biomass from the ecosystem. The book is intended for researchers and professionals working in the field of coastal marine ecology and estuarine ecology and for advanced students in this field.
Author: Richard F. Dame
Publisher: Springer Science & Business Media
ISBN: 3642783538
Category : Science
Languages : en
Pages : 576
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Book Description
Bivalve filter-feeding mollusks are important components of coastal ecosystems because they remove large quantities of suspended material from the water and excrete abundant amounts of reactive nutrients. These animals are also major prey for numerous predators including birds, fish, mammals, and invertebrates; furthermore, they are significant food resources for humans. While studies on the organismic and population level have dominated bivalve ecology, the recent focus on the ecosystem roles of filter feeding systems has led to larger-scale investigations. With this approach the specific topics of physiology, grazing, predation, nutrient cycling, physical environment, computer simulation modeling, and environmental management are combined into a meaningful whole.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309152313
Category : Science
Languages : en
Pages : 191
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Book Description
U.S. mariculture production of bivalve molluscs-those cultivated in the marine environment-has roughly doubled over the last 25 years. Although mariculture operations may expand the production of seafood without additional exploitation of wild populations, they still depend upon and affect natural ecosystems and ecosystem services. Every additional animal has an incremental effect arising from food extraction and waste excretion. Increasing domestic seafood production in the United States in an environmentally and socially responsible way will likely require the use of policy tools, such as best management practices (BMPs) and performance standards. BMPs represent one approach to protecting against undesirable consequences of mariculture. An alternative approach to voluntary or mandatory BMPs is the establishment of performance standards for mariculture. Variability in environmental conditions makes it difficult to develop BMPs that are sufficiently flexible and adaptable to protect ecosystem integrity across a broad range of locations and conditions. An alternative that measures performance in sustaining key indicators of ecosystem state and function may be more effective. Because BMPs address mariculture methods rather than monitoring actual ecosystem responses, they do not guarantee that detrimental ecosystem impacts will be controlled or that unacceptable impact will be avoided. Ecosystem Concepts for Sustainable Bivalve Mariculture finds that while performance standards can be applied for some broad ecosystem indicators, BMPs may be more appropriate for addressing parameters that change from site to site, such as the species being cultured, different culture methods, and various environmental conditions. This book takes an in-depth look at the environmental, social, and economic issues to present recommendations for sustainable bivalve mariculture.
