Download or read book Effect of Nutrient Input Reduction on the Eutrophication of the Madison Lakes written by William C. Sonzogni and published by . This book was released on 1974 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Nutrient Input Reduction on the Eutrophication of the Madison Lakes written by William C. Sonzogni and published by . This book was released on 1974 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Research Series written by and published by . This book was released on 1977 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1976 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimating Nutrient Loadings of Lakes from Non point Sources written by Paul D. Uttormark and published by . This book was released on 1974 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fate and Effects of Sediment Bound Chemicals in Aquatic Systems written by Kenneth L. Dickson and published by Elsevier. This book was released on 2013-09-11 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fate and Effects of Sediment-Bound Chemicals in Aquatic Systems presents the proceedings of the Sixth Pellston Workshop, held in Florissant, Colorado on August 12–17, 1984. This book presents the development of scientific inquiry of hazards to the aquatic environment. Organized into 27 chapters, this compilation of papers begins with an overview of water quality significance of sediment-associated contaminants to aquatic life. This text then addresses the topic of the role of suspended and settled sediments in regulating the effects of chemicals in the aquatic environment. Other chapters consider the nature and extent of partitioning and bioavailability, which are key elements in research efforts toward assessing the effects of sediments on water quality. This book discusses as well the regulatory and management strategies for chemicals entering public water supplies. The final chapter deals with conclusions and recommendations identified during the workshop. This book is a valuable resource for biologists and environmental scientists.
Download or read book EPA 440 5 written by and published by . This book was released on 1979 with total page 268 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 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water resources Investigations Report written by and published by . This book was released on 1993 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eutrophication Processes and Microbial Ecology of Lake Mendota Wisconsin written by and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eutrophication of Lake Mendota, Wisconsin co-occurred with deforestation of the watershed by settlers in the mid 1850's. The characteristics of this aquatic ecosystem are representative of eutrophication occurring throughout the world in lakes, rivers and marine systems (abundant harmful algal blooms [HABs]), anoxic hypolimnia, and altered food webs). Although the flow of nutrients through lakes and the microbial communities responsible for cycling have been a topic of scientific study for more than a century, our understanding of the efficacy of nutrient management, HAB and heterotrophic bacterial community prediction, and phosphorus speciation at the in-lake level remains limited. Enhanced nutrient management in the watersheds of impaired or threatened surface waters is the most common tool for mitigation of eutrophication, and is understood to be an effective tool to improve or prevent degradation of surface water due to excess nutrients. We used a mass balance approach to determine the net effects of nutrient management changes in the Lake Mendota, Wisconsin watershed occurring between 1995 and 2007, including farmers' adoption of enhanced nutrient management plans, reduced use of chemical feed supplements for dairy cattle, and an urban phosphorus ban. These three factors were attributed to be the cause of reduced, but positive accumulation in 2007, indicating that efforts to improve nutrient management have had limited effect on the overall P budget. We setup, calibrated, and validated an aquatic ecosystem model to test its ability for the short- and long-term prediction of the dynamics of HABs in Lake Mendota. We found biological variables to have the poorest fit with observations, particularly at time scales> 1 month, with the use of high-frequency water quality observations and predictions, and assessed using wavelet analysis. We used numerical simulations to assess the effects of climate change scenarios on water quality, and to identify the most potentially important external factors for HAB dynamics in the lake. Beyond HABs, heterotrophic bacterial communities are responsible for important ecosystem functions in lakes, and the interactions of heterotrophic bacteria with each other, with HABs, and with environmental variables over long time series is unknown. We determined the drivers of bacterial community characteristics (including diversity and co-occurrence network structure) using a decade-long record of bacterial community composition together with a long-term ecological research dataset and local similarity analysis. We found season to drive the complexity of interaction networks and patterns in diversity; variation of environmental variables did not explain the patterns observed. Finally, the chemical structure and dynamics of phosphorus compounds in Lake Mendota across space and time was assessed by 31P nuclear magnetic spectroscopy (NMR) to determine the prevalence and nature of non-reactive phosphorus in particulate and dissolved fractions. We found particulate and dissolved fractions from all locations observed had significant temporal variability, while epilimnetic particulate P was more stable over 5 months, and was associated with dissolved reactive P dynamics. This work addresses phosphorus cycling and microbial ecology of a eutrophic lake, leveraging and building upon the body of literature on anthropogenic eutrophication processes and microbial ecology in lakes.
Download or read book North American Project a Study of U S Water Bodies written by Corvallis Environmental Research Laboratory and published by . This book was released on 1977 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Food Web Management written by James F. Kitchell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series is dedicated to serving the growing community of scholars and practitioners concerned with the principles and applications of environ mental management. Each volume is a thorough treatment of a specific topic of importance for proper management practices. A fundamental objective of these books is to help the reader discern and implement man's stewardship of our environment and the world's renewable re sources. For we must strive to understand the relationship between man and nature, act to bring harmony to it, and nurture an environment that is both stable and productive. These objectives have often eluded us because the pursuit of other individual and societal goals has diverted us from a course of living in balance with the environment. At times, therefore, the environmental manager may have to exert restrictive control, which is usually best applied to man, not nature. Attempts to alter or harness nature have often failed or backfired, as exemplified by the results of imprudent use of herbicides, fertilizers, water, and other agents. Each book in this series will shed light on the fundamental and applied aspects of environmental management. It is hoped that each will help solve a practical and serious environmental problem.
Download or read book Measurement of Sediment Interstitial Phosphorus and Phosphorus Release from Intact Sediment Cores written by George Christian Holdren and published by . This book was released on 1974 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Management of Bottom Sediments Containing Toxic Substances written by Spencer A. Peterson and published by . This book was released on 1978 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lake Restoration written by United States. Environmental Protection Agency. Office of Water Planning and Standards and published by . This book was released on 1978 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Travaux written by International Association of Theoretical and Applied Limnology and published by . This book was released on 1977 with total page 1490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
