Author: Stephen D. PrestonPublisher:
ISBN:
Category : Nitrates
Languages : en
Pages : 12
Book Description
Application of Spatially Referenced Regression Modeling for the Evaluation of Total Nitrogen Loading in the Chesapeake Bay Watershed
Author: Stephen D. PrestonPublisher:
ISBN:
Category : Nitrates
Languages : en
Pages : 12
Book Description
Water-resources Investigations Report
Author: Estimation of Total Nitrogen and Phosphorus in New England Streams Using Spatially Referenced Regression Models
Author: Publisher: DIANE Publishing
ISBN: 142898397X
Category : Water
Languages : en
Pages : 50
Book Description
The U.S. Geological Survey and the Chesapeake Bay
Author: Scott W. PhillipsPublisher:
ISBN:
Category : Chesapeake Bay (Md. and Va.)
Languages : en
Pages : 44
Book Description
U.S. Geological Survey Circular
Author: The Llobregat
Author: Sergi SabaterPublisher: Springer
ISBN: 3642309399
Category : Science
Languages : en
Pages : 381
Book Description
The Llobregat belongs to the most thoroughly studied rivers in Europe and is a paradigm of the confluence of human and natural disturbances in a single basin. Because of its location in a very densely populated region and its Mediterranean character, the Llobregat supports a mixture of irregular flow, water abstraction, excess nutrients, mining debris, and a wide array of pollutants. The aquatic organisms strive to survive in a dramatically changing river that passes through a succession of dams, weirs and channels. The long-term river monitoring as well as the research that has been carried out in the river for a long time have provided an extensive knowledge of these disturbances and their effects on the biological communities. This book highlights the available information, with emphasis on the hydrological, chemical and biological elements interspersed in the river. Experts in the field discuss the main nutrient patterns and pollutant occurrence and the responses of the biological quality elements as well as the river ecosystem to the overall natural and man-made influences.
Nutrient Criteria Technical Guidance Manual
Author: Nitrogen Loading in Coastal Water Bodies
Author: Richard A. ValiguraPublisher: American Geophysical Union
ISBN: 0875902715
Category : Science
Languages : en
Pages : 260
Book Description
Published by the American Geophysical Union as part of the Coastal and Estuarine Studies, Volume 57. Every time it rains, biologically active nitrogen compounds are transferred from the air to whatever surface lies underneath; what a farmer once called "the poor man's fertilizer." In fact, nitrogen containing compounds are transferred between surface and atmosphere even when it is not raining. That this atmospheric nitrogen deposition impacts on the environment is a scientifically accepted fact, established during the acid rain debates led by the National Acid Precipitation Assessment Program. The extent to which this deposition contributes to the decline of coastal waters around the United States due to over fertilization, however, is still under debate. In response to and as a continuation of this debate is the current work before you: the first attempt to consistently and comprehensively estimate the relative contribution of atmospherically delivered nitrogen to the total amount of nitrogen entering coastal estuaries around the United States.
New Publications of the Geological Survey
Author: Geological Survey (U.S.)Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 76
Book Description
Proceedings of the Seventh Federal Interagency Sedimentation Conference, March 25-29, 2001, Reno, Nevada, USA
Author: Publisher:
ISBN:
Category : Sedimentation and deposition
Languages : en
Pages : 664
Book Description