Nutrients And Eutrophication In Estuaries And Coastal Waters
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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.
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.
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.
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.
Eutrophication In Europe S Coastal Waters
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Author : Gunni Ærtebjerg
language : en
Publisher:
Release Date : 2001
Eutrophication In Europe S Coastal Waters written by Gunni Ærtebjerg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Coasts categories.
Recoge : 1. Summary - 2. Introduction - 3. The seas of Europe - 4. Spatial and temporal coverage of data - 5. Nutrient loads (pressures) - 6. Present trade of eutrophication - 7. Impact of eutrophication and responses - 8. Trophical index for marine systems (TRIX) - 9. Contribution from remote sensing to support the evaluation of eutrophication in marine and coastal waters - 10. Conclusions and recommendations - 11. References - 12. Annex 1: Maps showing levels of nutrients, clorophylla and oxygen along the coasts of Europe.
Nutrient Pollution In Coastal Waters
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Author : Robert Howarth
language : en
Publisher:
Release Date : 2003
Nutrient Pollution In Coastal Waters written by Robert Howarth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Coastal ecology categories.
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.
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.
Eutrophication In Europes Coastal Waters
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Author : Gunni Aertebjerg
language : en
Publisher:
Release Date : 2001-03
Eutrophication In Europes Coastal Waters written by Gunni Aertebjerg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-03 with Nature categories.
The major impacts of eutrophication due to overloading with nitrogen & phosphorus nutrients are changes in the structure & functioning of marine ecosystems, reduced biodiversity, & reduced income from fishery, mariculture & tourism. The main source of nitrogen is run-off from agricultural land brought to the sea via rivers. Most of the phosphorus comes from households & industry discharging treated or untreated wastewater to freshwater or directly to the sea, from soil erosion, & fish farming. This report evaluates the causes, state & development of eutrophication in European coastal waters, & identifies areas where more monitoring date are needed to improve assessment. The use of remote sensing is evaluated as a monitoring tool. Ill.
Eutrophication Of Freshwaters
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Author : David Harper
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Eutrophication Of Freshwaters written by David Harper 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.
Eutrophication is a problem which became widely recognised by the scientific community in the 1940s and 1950s. It raised public concern, resulting in increased research effort and expenditure on management techniques through the 1960s and 1970s, recognised as a distinct problem of water pollution, though linked with the more gross effects of organic pollution. In the 1980s it became less fashionable - replaced in the public's eye and the politician's purse by newer problems such as acid rain. It remains however, one of the biggest and most widespread problems of fresh waters, particularly of lakes and an increasing problem for estuaries and coastal waters. It is one with which almost all water scientists and engineers in urbanised areas of the world have to cope. Technical methods for the reversal of eutrophication, such as nutrient removal, have been developed and applied successfully in some instances. They are not widespread however, and where they are feasible, they are often expensive and may be politically difficult to implement. In the last decade, attention has focussed upon less expensive lake manipula tion techniques, such as destratification and biomanipulation, which aim to minimise rather than elimininate the detrimental effects of eutrophication. These are becoming more widely applied. Prediction of the potential problems in lakes and catchments which have not yet suffered the full effects of eutrophication is now accurate enough to be of direct benefit to river basin management.