Download or read book Nutrient Dynamics in the Choptank River Watershed written by U.S. Fish and Wildlife Service and published by . This book was released on 1988 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient and Suspended sediment Concentrations Trends Loads and Yields from the Nontidal Part of the Susquehanna Potomac Patuxent and Choptank Rivers 1985 96 written by Linda C. Darrell and published by . This book was released on 1999 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring Nutrients in the Major Rivers Draining to Chesapeake Bay written by Donna L. Belval and published by . This book was released on 1999 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Affecting Nutrient Trends in Major Rivers of the Chesapeake Bay Watershed written by and published by . This book was released on 2000 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Great Plains Regional Technical Input Report written by Dennis Ojima and published by Island Press. This book was released on 2015-07-21 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Great Plains : social-ecological setting (climate-environment-society) natural resources and wildlife aspects --Characteristics of agricultural system and energy resources --Climate conditions and scenarios of change across the Great Plains --Water management --Ecosystem and biodiversity conservation issues --Energy considerations --Agriculture and land management --Great Plains societal considerations : impacts and consequences, vulnerability and risk, adaptive capacity, response options --Collaborative research and management interactions in response to climate change.
Download or read book Water resources Investigations Report written by and published by . This book was released on 2000 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Keeping Pace with Science and Engineering written by National Academy of Engineering and published by National Academies Press. This book was released on 1993-02-01 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The technical basis of environmental regulation is always at the edge of scientific and engineering understanding. As knowledge improves, questions will inevitably arise about past decisions. Understanding how the regulatory system accommodates changing scientific and engineering knowledge is vital for achieving environmental values. In this new volume, seven case studies shed light on the interplay between environmental regulation and scientific and engineering understanding, with practical conclusions on how science and engineering should be used for more sound and timely regulatory decision making. The book provides helpful timelines of scientific and regulatory developments for the cases, which include: Factors impeding clean-up strategies in the Chesapeake Bay. Pivotal questions in the regulation of ambient ozone concentrations. How science has been heeded but also ignored in regulation of new municipal waste combustors. Impact of scientific findings on control of chlorination by-products. Acid rain and what can be learned about research and public policy debate. Controversy over the need for formaldehyde regulation. The effect of public perception on management decisions concerning dioxin. This volume will be of practical interest to policymakers, business and environmental advocates, scientists, engineers, researchers, attorneys, faculty, and students.
Download or read book Coastal Lagoons written by Michael J. Kennish and published by CRC Press. This book was released on 2010-06-15 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an outstanding group of contributors, this book examines the function and structure of coastal lagoonal ecosystems and the natural and anthropogenic drivers of change that affect them, most notably nutrient over-enrichment from coastal watersheds and airsheds. The contributors target the susceptibility of coastal lagoons to eutrophication, the indicators of eutrophic conditions, the influences of natural factors such as major storms and other climate effects, and the resulting biotic and ecosystem impairments that have developed. The book compares biogeochemical and ecological response to nutrient enrichment and other pollutants in lagoonal estuaries to those in other estuarine types.
Download or read book Yields and Trends of Nutrients and Total Suspended Solids in Nontidal Areas of the Chesapeake Bay Basin 1985 96 written by Michael J. Langland 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 Running Silver written by John Waldman and published by Rowman & Littlefield. This book was released on 2013-10-15 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: That one could “walk drishod on the backs” of schools of salmon, shad, and other fishes moving up Atlantic coast rivers was a not uncommon kind of description of their migratory runs during early Colonial times. Accounts tell of awe-inspiring numbers of spawners pushing their way upriver, the waters “running silver,” to complete life cycles that once replenished critical marine fisheries along the Eastern Seaboard. This is a hugely important, fascinating, and unique look at the fish of North America whose history and life-cycles and conservation challenges are poorly understood. Despite these primordial abundances, over the centuries these stocks were so stressed that virtually all are now severely depressed, with many biologically or commercially extinct and some simply forgotten. Running Silver will tell the story of the past, present and future of these sea-river fish. This important book will elevate public consciousness of the contrasts between the historical and the present to show the enormous legacy that has already been lost and to help inspire efforts to save what remains. Drawing on the author's thirty-year career as a scientist and educator with a passion for the native river fish of the North East, Running Silver tells the story of these endangered fish with a mix of research, historical accounts, anecdotes, personal experience, interviews, and images.
Download or read book The Comparative Roles of Suspension Feeders in Ecosystems written by Richard F. Dame and published by Springer Science & Business Media. This book was released on 2006-03-30 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Animals are a major link between the water column (pelagic) and the bottom (benthic) habitats in most shallow systems. This coupling is dominated by active processes such as suspension-feeding in which the organism actively uses energy to pump water that is then filtered to remove suspended particles that are consumed while undigested remains are deposited on the bottom. As a result of this feeding on and metabolism of particles, the animals excrete dissolved inorganic and organic waste back into the water column, and thus, become major components in the cycling and feedback of essential elements. With relatively high weight specific filtration rates of 1— 10 liters/hour/gram dry tissue and a propensity to form large aggregated populations (beds, reefs, schools and swarms), these organisms can play an important role in regulating water column processes Although estuarine bivalve molluscs such as oysters and mussels dominate the suspension-feeder literature, other groups including plankton and nekton that are found in estuarine as well as other aquatic systems are also potentially important removers of suspended particles. Thus, a significant part of the NATO Advanced Research Workshop focused on suspension-feeders as controllers of plankton abundance, biomass and diversity, system metabolism, nutrient cycling and scale dependency. Systems dominated by suspension-feeders are typically impacted by human activities including recreation, aquaculture, human and industrial pollution, and bilge water from shipping. Suspension-feeders are often impacted by fisheries and over-exploitation. These impacts commonly result in changes in ecosystem structure either through the food chain concentration of harmful substances or diseases, the introduction of alien species of suspension-feeders, or the instability of suspension-feeders systems through species displacement or phase shifts in the dominance between different suspension-feeding components such as nekton or zooplankton. These issues were addressed near the close of the workshop along with conclusions and syntheses developed by the working groups.
Download or read book Summary of Sediment Data from the Yampa River and Upper Green River Basins Colorado and Utah 1993 2002 written by John Grant Elliott and published by . This book was released on 2004 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Revised Load Estimation Procedure for the Susquehanna Potomac Patuxent and Choptank Rivers written by Steven E. Yochum and published by . This book was released on 2000 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Changes in streamflow and water quality in selected nontidal sites in the Chesapeake Bay basin 1985 2003 written by and published by DIANE Publishing. This book was released on 2004 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigating Nutrient Dynamics and Macroalgal Community Structure in an Eutrophic Southern California Estuary written by Karleen Ann Boyle and published by . This book was released on 2002 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient and Sediment Concentrations Loads and Trends for Four Nontidal Tributaries in the Chesapeake Bay Watershed 1997 2001 written by Michael P. Senus and published by . This book was released on 2005 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishery Management Plan for Atlantic Tunas Swordfish and Sharks written by and published by . This book was released on 1999 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
