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Nutrient management in agricultural watersheds : a wetlands solution
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ISBN: 9086865585 9076998612 Year: 2005 Publisher: Wageningen : Wageningen Academic Publishers,

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Challenges in ocean policy
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ISBN: 0309528674 9780309528672 Year: 2001 Publisher: [Washington, D.C.] National Academy Press

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Source apportionment of nitrogen and phosphorus inputs into the aquatic environment
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ISBN: 9291677779 Year: 2005 Volume: 2005/7 Publisher: Luxemburg Publicatiebureau


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Nutrient concentrations and their relations to the biotic integrity of nonwadeable rivers in Wisconsin
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ISBN: 9781411321717 Year: 2008 Publisher: Reston, Va. : U.S. Geological Survey,

Handbook of groundwater remediation using permeable reactive barriers : applications to radionuclides, trace metals, and nutrients
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ISBN: 0125135637 9786611029395 1281029394 0080533051 9780080533056 9780125135634 Year: 2002 Publisher: San Diego, Calif. : Academic Press,

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Over the last century and a half, groundwaters have become contaminated by a growing number of organic and inorganic substances ranging from petroleum-derived hydrocarbons to radioactive compounds, to cancer-causing hexavalent chromium. The importance of uncontaminated groundwater for agriculture, human consumption, and the environmental health of ecosystems is paramount to the health and productivity of industrial society. Water scientists and managers are focused on developing cost-effective methods to reverse this trend.Several methodologies have been developed, however few are as c


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Nutrient concentrations and their relations to the biotic integrity of wadeable streams in Wisconsin
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ISBN: 1411309758 9781411309753 Year: 2006 Volume: 1722 Publisher: Washington U S. Geological survey

Nitrogen cycling in the Americas : natural and anthropogenic influences and controls
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ISBN: 1280745029 9786610745029 140205517X 1402047177 9048171784 Year: 2006 Publisher: Dordrecht : Springer,

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The rate of creation of reactive nitrogen (NR) on the earth has dramatically increased in the last half century mainly due to the production of N-fertilizer through the Haber-Bosch process, fossil fuel combustion, and the cultivation of plants that fix N from the atmosphere. The anthropogenic production of NR has been especially high in developed countries of the temperate zone, such as the USA and Canada, where severe eutrophication of estuaries and coastal zones, acidification of lakes and streams, loss of biodiversity, and reduced forest productivity have become common environmental problems associated with increasing nitrogen loads to ecosystems. However, important drivers responsible for the increase of the production of NR in the temperate zone are increasingly influencing the nitrogen cycle in rapidly developing regions of the world, such as the Tropics and Sub-Tropics, including most of the countries of Latin America and the Caribbean. Advances in our understanding of the nitrogen cycle and the impact of anthropogenic activities on regional to global scales depend on the expansion of scientific studies to these fast-developing regions. This book presents a series of studies from across the Americas whose aim is to highlight key natural processes that control nitrogen cycling as well as discuss the main anthropogenic influences on the nitrogen cycle in both the tropical and temperate regions of the Americas.


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Nutrient indicator models for determining biologically relevant levels : a case study based on the Corn Belt and Northern Great Plain Nutrient Ecoregion
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ISBN: 9400741286 9786613704733 9400741294 1280794348 Year: 2012 Publisher: Dordrecht ; New York : Springer,

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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 sensitvity 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.


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Clean coastal waters : understanding and reducing the effects of nutrient pollution
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ISBN: 0309069483 0309516153 0585354790 9780585354798 9780309516150 9780309069489 0309172098 Year: 2000 Publisher: Washington, D.C. : National Academy Press,

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