Blackwater National Wildlife Refuge Nwr Final Boundary Preliminary Assessment PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Blackwater National Wildlife Refuge Nwr Final Boundary Preliminary Assessment PDF full book. Access full book title Blackwater National Wildlife Refuge Nwr Final Boundary Preliminary Assessment.
Author | : |
Publisher | : |
Total Pages | : 22 |
Release | : 1980 |
Genre | : |
ISBN | : |
Download Blackwater National Wildlife Refuge (N.W.R.), Final Boundary, Preliminary Assessment Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 0 |
Release | : 1980 |
Genre | : |
ISBN | : |
Download Blackwater National wildlife refuge , final boundary, preliminary assessment Book in PDF, ePub and Kindle
Author | : United States. Congress. Senate. Committee on Environment and Public Works |
Publisher | : |
Total Pages | : 4 |
Release | : 2003 |
Genre | : Blackwater National Wildlife Refuge (Md.) |
ISBN | : |
Download Blackwater National Wildlife Refuge Expansion Act Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 60 |
Release | : 2002 |
Genre | : |
ISBN | : |
Download Stillwater National Wildlife Refuge (N.W.R.) Complex, Comprehensive Conservation Plan and Boundary Revision Book in PDF, ePub and Kindle
Author | : United States. Congress. Senate. Committee on Environment and Public Works |
Publisher | : |
Total Pages | : 6 |
Release | : 2002 |
Genre | : Blackwater National Wildlife Refuge (Md.) |
ISBN | : |
Download Blackwater National Wildlife Refuge Expansion Act Book in PDF, ePub and Kindle
Author | : Steven Lewis Yaffee |
Publisher | : |
Total Pages | : 378 |
Release | : 1996 |
Genre | : Nature |
ISBN | : |
Download Ecosystem Management in the United States Book in PDF, ePub and Kindle
Ecosystem Management in the United States is the first practical and comprehensive guide to ecosystem management efforts nationwide that meets the needs of practitioners and decisionmakers alike. The book is a unique and timely resource that significantly advances our understanding of the realities of ecosystem management by moving the debate from vague discussions of theory to an examination of real issues faced by people who are actually working with ecosystem-based approaches. It is an invaluable reference for everyone involved with land management or protection.
Author | : M.P. Weinstein |
Publisher | : Springer Science & Business Media |
Total Pages | : 862 |
Release | : 2000-10-31 |
Genre | : Nature |
ISBN | : 0792360192 |
Download Concepts and Controversies in Tidal Marsh Ecology Book in PDF, ePub and Kindle
Tidal salt marshes are viewed as critical habitats for the production of fish and shellfish. As a result, considerable legislation has been promulgated to conserve and protect these habitats, and much of it is in effect today. The relatively young science of ecological engineering has also emerged, and there are now attempts to reverse centuries-old losses by encouraging sound wetland restoration practices. Today, tens of thousands of hectares of degraded or isolated coastal wetlands are being restored worldwide. Whether restored wetlands reach functional equivalency to `natural' systems is a subject of heated debate. Equally debatable is the paradigm that depicts tidal salt marshes as the `great engine' that drives much of the secondary production in coastal waters. This view was questioned in the early 1980s by investigators who noted that total carbon export, on the order of 100 to 200 g m-2 y-1 was of much lower magnitude than originally thought. These authors also recognized that some marshes were either net importers of carbon, or showed no net exchange. Thus, the notion of `outwelling' has become but a single element in an evolving view of marsh function and the link between primary and secondary production. The `revisionist' movement was launched in 1979 when stable isotopic ratios of macrophytes and animal tissues were found to be `mismatched'. Some eighteen years later, the view of marsh function is still undergoing additional modification, and we are slowly unraveling the complexities of biogeochemical cycles, nutrient exchange, and the links between primary producers and the marsh/estuary fauna. Yet, since Teal's seminal paper nearly forty years ago, we are not much closer to understanding how marshes work. If anything, we have learned that the story is far more complicated than originally thought. Despite more than four decades of intense research, we do not yet know how salt marshes function as essential habitat, nor do we know the relative contributions to secondary production, both in situ or in the open waters of the estuary. The theme of this Symposium was to review the status of salt marsh research and revisit the existing paradigm(s) for salt marsh function. Challenge questions were designed to meet the controversy head on: Do marshes support the production of marine transient species? If so, how? Are any of these species marsh obligates? How much of the production takes place in situ versus in open waters of the estuary/coastal zone? Sessions were devoted to reviews of landmark studies, or current findings that advance our knowledge of salt marsh function. A day was also devoted to ecological engineering and wetland restoration papers addressing state-of-the-art methodology and specific case histories. Several challenge papers arguing for and against our ability to restore functional salt marshes led off each session. This volume is intended to serve as a synthesis of our current understanding of the ecological role of salt marshes, and will, it is hoped, pave the way for a new generation of research.
Author | : Matthew McKinney |
Publisher | : |
Total Pages | : 0 |
Release | : 2010 |
Genre | : Environmental policy |
ISBN | : 9781558442108 |
Download Large Landscape Conservation Book in PDF, ePub and Kindle
In response to increasing conservation activity at the large landscape scale, leaders from the public, private, and nongovernmental sectors participated in two national landscape management policy dialogues and many other informal discussions in 2009. Convened by the Lincoln Institute of Land Policy and the Center for Natural Resources and Environmental Policy at The University of Montana, the intent of the dialogues was to synthesize what we know about large landscape conservation and to identify the most important needs as we move forward.
Author | : |
Publisher | : |
Total Pages | : 2 |
Release | : 1999 |
Genre | : Wildlife refuges |
ISBN | : |
Download National Wildlife Refuge System Improvement Act of 1997 Book in PDF, ePub and Kindle
Author | : Martin L. Wiley |
Publisher | : |
Total Pages | : 568 |
Release | : 1976 |
Genre | : Nature |
ISBN | : |
Download Estuarine Processes: Uses, stresses, and adaptation to the estuary Book in PDF, ePub and Kindle