Download or read book Seasonal and Spatial Phosphorus Trends in the Minnesota River Basin written by Kara Lynn Greenley Marr and published by . This book was released on 1999 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phosphorus Retention by Soils and Suspended Sediments in the Minnesota River Basin written by Feng Fang and published by . This book was released on 2002 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phosphorus in the Minnesota River written by and published by . This book was released on 1998 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Phosphorus Trends and Evaluation of Sampling Designs in the Quinebaug River Basin Connecticut written by Elaine C. Todd Trench and published by DIANE Publishing. This book was released on 2004 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phosphorus Trends in the Upper Mississippi Basin written by Sharon Elizabeth Kroening and published by . This book was released on 1994 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Spatial Analysis of Phosphorus in the Mississippi River Basin written by Linda M. Jacobson and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphorus (P) in rivers and streams in the Mississippi River Basin (MRB) is a contributing nutrient to hypoxia in the Gulf of Mexico and impacts local water quality. Although nitrogen has been extensively studied and attributed to be the main nutrient causing the Gulf hypoxic zone, P has increasingly been recognized as having more of an effect than was previously thought. The primary inputs of P to rivers and streams are through surface runoff or tile drainage from agricultural fields and from point sources, primarily sewage effluent. The objective of this study was to analyze the spatial pattern of P inputs and outputs in the MRB as they relate to riverine P yields to the Gulf of Mexico and to determine the counties in the MRB that have the highest yields of P and the most critical factors causing this P loss. A database of factors contributing P to the environment was constructed for each county in the MRB from 1997 through 2006 including data on fertilizer application, major crop acreage and harvest, animal numbers for manure inputs and human population. Landscape and climate characteristics of tile drainage, soil characteristics, slope and precipitation were also included. Riverine yields of total P (TP), dissolved reactive P (DRP) and particulate P (PP) for 113 watersheds within the MRB were related to these factors to create multiple regression and spatial error regression models to predict P yields throughout the basin. The fraction of the land planted in crops, sewage effluent P inputs and precipitation were found to best predict TP yields with a spatial error model (R2=0.47). Dissolved reactive P yields were predicted by fertilizer P inputs, sewage effluent P inputs and precipitation in a multiple regression model (R2=0.46), whereas PP yields were explained by crop fraction, sewage effluent P inputs and soil bulk density in a spatial error regression model (R2=0.499). Inputs of P from animal manure were not found to be significant in any model predicting P yields, which contrasts with the results of the USGS SPARROW model. Overall, the Cornbelt region of the upper Midwest, where there is a large amount of cropland and fertilizer application, had the counties with the greatest P yields. This analysis of P in the MRB helps to point out specific areas where P reductions are needed to limit the occurrence of Gulf hypoxia and improve local water quality.
Download or read book Differences Between Farmer and Agency Attitudes Regarding Policies to Reduce Phosphorous Pollution in the MInnesota River Basin written by Laura Mary Joy McCann and published by . This book was released on 1998 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluating Transaction Costs of Alternative Policies to Reduce Agricultural Phosphorus Pollution in the Minnesota River written by Laura Mary Joy McCann and published by . This book was released on 1997 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diffuse Pollution 98 written by Vladimir Novotny and published by IWA Publishing (International Water Assoc). This book was released on 1999-05-31 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diffuse Pollution of surface, coastal and ground waters is a major environmental and economic problem in the world today. Unlike point source pollution, which has to some extent been controlled by developments in technology and regulation, diffuse pollution is difficult to control, requiring the application of technological and socio-economical approaches and of education. The 46 papers in these proceedings have been selected from those presented at the 3rd International Conference on Diffuse Pollution, which addressed urban and rural diffuse pollution problems and solutions as experienced in several countries. The papers are divided into five themes: Identification of sources and loads Best Management Practices Receiving water impacts Modelling diffuse pollution Watershed management. The proceedings conclude with two papers, prepared by prominent specialists, that summarise the key findings at the conference. These proceedings will prove an essential resource for all concerned, whether as researchers, regulators or practioners, with diffuse pollution and its control.
Download or read book Water resources Investigations Report written by and published by . This book was released on 2001 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial Distribution of Phosphorus in Fluvial Sediments from the James River Basin SW Missouri written by Brian S. Fredrick and published by . This book was released on 2001 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paleolimnological Study of Phosphorus Impaired Lakes in the Cannon River Watershed written by Daniel R. Engstrom and published by . This book was released on 2019 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cannon River watershed in southeastern Minnesota contains 30 lakes that have phosphorus (P) levels exceeding state water-quality standards and are now on the EPA 303(d) list of impaired waters. This study used paleolimnological analysis of dated sediment cores from 16 nutrient-impaired lakes in the Cannon River Watershed to constrain present-day lake phosphorus (P) budgets and reconstruct changes in ecological conditions over the last 150 years.
Download or read book Spatial Variability of Soil Properties at Multiple Scales Within the Minnesota River Basin written by Daniel Benton Wheeler and published by . This book was released on 1999 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water quality Assessment of Part of the Upper Mississippi River Basin Minnesota and Wisconsin written by Sharon E. Kroening and published by . This book was released on 1997 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrients and Suspended Solids in Surface Waters of the Upper Illinois River Basin in Illinois Indiana and Wisconsin 1978 97 written by Daniel J. Sullivan and published by . This book was released on 2000 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 1344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
