Estuaries And Nutrients
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Estuaries And Nutrients
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Author : Bruce J. Neilson
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Estuaries And Nutrients written by Bruce J. Neilson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Estuaries are eternally enriched. Their positions at the foot of watersheds and their convenience as receiving bodies for the wastes of cites, towns and farms results in continuous addition of nutrients - those elements and compounds which are essential for organic production. Such materials must be added to these complex bodies of water to sustain production, since there is a net loss of water and its contents to the oceans. Enrichment from land and the ocean and the subsequent cycling of the original chemicals or their derivatives contribute to the extraordinarily high values of estuaries for human purposes. Many estuaries are able to assimilate large quantities of nutrients despite the great fluctuations which occur with variations in the flow from tributaries. The nutrients can be stored, incorporated in standing crops of plants, released, cycled and exported - and the system frequently achieves high production of plants and and animals without creation of any undesirable results of enrichment. Excessive enrichment with the same elements and compounds can, however, be highly detrimental to estuaries and their uses. Coastal cities are usually located on the estuaries which provided a harbor for the- and which now receive partially treated sewage and other wastes from the expanding population and industrial activity. Conversion of woodlands to agricultural use and the extensive application of fertilizers have resulted in the flow of large quantities of nutrients down the hill or slopes and eventually into the estuary.
Nutrients And Eutrophication In Estuaries And Coastal Waters
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Author : Emma Orive
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11
Nutrients And Eutrophication In Estuaries And Coastal Waters written by Emma Orive and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Science categories.
This volume focuses on the nutrient and organic matter inputs in estuaries and other coastal ecosystems, their effects on geochemistry and community structure and possibilities for recovery of the systems to a trophic state that is beneficial for man and nature. The book provides many examples of the effects of the enhanced supply of nutrients and organic matter on the chemical features of the water and on the structure, metabolism and trophic pathways of the biological communities. Also included are several case studies providing considerable insight into the response of the different coastal ecosystems to long term changes in the trophic state of the water. Current knowledge on modeling as a tool to manage the trophic state of the coastal ecosystems is also dealt with, making this book one of interests to scientist and students as well as managers.
Estuaries And Nutrients
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Author : BJ Neilson (Ed)
language : en
Publisher:
Release Date : 1979
Estuaries And Nutrients written by BJ Neilson (Ed) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
Estuarine Nutrient Cycling The Influence Of Primary Producers
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Author : Søren Laurentius Nielsen
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-11-03
Estuarine Nutrient Cycling The Influence Of Primary Producers written by Søren Laurentius Nielsen and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-03 with Science categories.
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.
Effects Of Nutrient Enrichment In The Nation S Estuaries
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Author :
language : en
Publisher:
Release Date : 2007
Effects Of Nutrient Enrichment In The Nation S Estuaries written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Estuarine ecology categories.
Clean Coastal Waters
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2000-08-17
Clean Coastal Waters written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-08-17 with Science categories.
Environmental problems in coastal ecosystems can sometimes be attributed to excess nutrients flowing from upstream watersheds into estuarine settings. This nutrient over-enrichment can result in toxic algal blooms, shellfish poisoning, coral reef destruction, and other harmful outcomes. All U.S. coasts show signs of nutrient over-enrichment, and scientists predict worsening problems in the years ahead. Clean Coastal Waters explains technical aspects of nutrient over-enrichment and proposes both immediate local action by coastal managers and a longer-term national strategy incorporating policy design, classification of affected sites, law and regulation, coordination, and communication. Highlighting the Gulf of Mexico's "Dead Zone," the Pfiesteria outbreak in a tributary of Chesapeake Bay, and other cases, the book explains how nutrients work in the environment, why nitrogen is important, how enrichment turns into over-enrichment, and why some environments are especially susceptible. Economic as well as ecological impacts are examined. In addressing abatement strategies, the committee discusses the importance of monitoring sites, developing useful models of over-enrichment, and setting water quality goals. The book also reviews voluntary programs, mandatory controls, tax incentives, and other policy options for reducing the flow of nutrients from agricultural operations and other sources.
Estuaries
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Author :
language : en
Publisher: Academic Press
Release Date : 1999-09-14
Estuaries written by and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-09-14 with Science categories.
The importance and ecological significance of estuaries has been long appreciated. In the last few years, there has been increased research activity, resulting in significant advances in understanding of estuarine ecology. This special thematic volume of Advances in Ecological Research provides an overview of a number of the important areas. Ranging from the macroscale: how differences in river basins influence the loads of nutrients, through the impacts and fates of the nutrient loads, to how both phytoplanktonic and benthic estuarine primary production are regulated. There is also a review of the key factors influencing the outcome of management decisions for estuaries from the point of sustainability of estuarine resources. This volume is essential reading and reference for all those interested in estuaries including ecologists, environmental scientists, botanists, and zoologists.
Nutrients And Eutrophication In Estuaries And Coastal Waters
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Author : Emma Orive
language : en
Publisher:
Release Date : 2002
Nutrients And Eutrophication In Estuaries And Coastal Waters written by Emma Orive and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Studies Of The Biogeochemistry Of Typical Estuaries And Bays In China
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Author : Zhiliang Shen
language : en
Publisher: Springer
Release Date : 2019-01-23
Studies Of The Biogeochemistry Of Typical Estuaries And Bays In China written by Zhiliang Shen and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-23 with Science categories.
This book presents study findings involving the Changjiang River estuary and Jiaozhou Bay, China, etc. It takes a large catchment as a combined ecosystem to study nutrients biogeochemistry and environmental aspects of the Changjiang River. Some of the findings have sparked new research directions, including systematic studies of nutrients in the Changjiang River; sources and control mechanisms of nitrogen and phosphorus in the Changjiang River and its estuary; removal and transport of nutrients in the turbidity maximum zone and upwelling area of the Changjiang estuary; long-term changes in nutrients and ecological responses in the Changjiang River estuary and Jiaozhou Bay; and a study on nutrient structure and nutrient composition of phytoplankton, which are topics at the forefront ofinternational marine The studies address different fields, such as biogeochemistry, marine chemistry, ecology, environmental science, oceanography and biology.
Impact Of Nutrients In Estuaries
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Author : C. R. Scott
language : en
Publisher:
Release Date : 1999
Impact Of Nutrients In Estuaries written by C. R. Scott and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Ecology categories.