Author: Publisher:
ISBN:
Category : Chinook salmon fisheries
Languages : en
Pages : 332
Book Description
Introduction of Pacific Salmonids Into the Delaware River Watershed
Author: Publisher:
ISBN:
Category : Chinook salmon fisheries
Languages : en
Pages : 332
Book Description
Quantitative Methods for Conservation Biology
Author: Scott FersonPublisher: Springer Science & Business Media
ISBN: 0387226486
Category : Science
Languages : en
Pages : 322
Book Description
Quantitative methods are needed in conservation biology more than ever as an increasing number of threatened species find their way onto international and national “red lists. ” Objective evaluation of population decline and extinction probability are required for sound decision making. Yet, as our colleague Selina Heppell points out, population viability analysis and other forms of formal risk assessment are underused in policy formation because of data uncertainty and a lack of standardized methodologies and unambiguous criteria (i. e. , “rules of thumb”). Models used in conservation biology range from those that are purely heuristic to some that are highly predictive. Model selection should be dependent on the questions being asked and the data that are available. We need to develop a toolbox of quantitative methods that can help scientists and managers with a wide range of systems and that are subject to varying levels of data uncertainty and environmental variability. The methods outlined in the following chapters represent many of the tools needed to fill that toolbox. When used in conjunction with adaptive management, they should provide information for improved monitoring, risk assessment, and evaluation of management alternatives. The first two chapters describe the application of methods for detecting trends and extinctions from sighting data. Presence/absence data are used in general linear and additive models in Chapters 3 and 4 to predict the extinction proneness of birds and to build habitat models for plants.
Harmful Non-indigenous Species in the United States
Author: Publisher:
ISBN:
Category : Competition (Biology)
Languages : en
Pages : 76
Book Description
Introduction of Non-indigenous Species Into Existing Ecosystems
Author: United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Oversight and InvestigationsPublisher:
ISBN:
Category : Science
Languages : en
Pages : 104
Book Description
Canoeing the Delaware River
Author: Gary LetcherPublisher: Rutgers University Press
ISBN: 9780813524511
Category : History
Languages : en
Pages : 252
Book Description
Canoeing the Delaware River provides a mile-by-mile account of the Delaware's course from where the East and West Branches meet in Hancock, New York, two hundred miles downstream to tidewater at Trenton, New Jersey. The book describes rapids, access areas, and points of interest in detail. It is an invaluable resource to both the novice out for an afternoon paddle and the adventurer on a ten-day trip. This completely revised and updated edition provides new maps, guides to river outfitters, campgrounds, information sources on river conditions, and new photographs.In addition to guiding the way, Canoeing the Delaware River portrays the people, places, and events associated with the river from its colorful past through present times. Gary Letcher also includes information on canoe safety and environmental concerns.-- A mile-by-mile guide to the Delaware River for canoeists and other river users, with maps and photographs.-- Describes historical and present-day points of interest, and provides suggestions for activities within easy reach of the river.
Federal Register
Author: Report to Congress
Author: United States. Aquatic Nuisance Species Task ForcePublisher:
ISBN:
Category : Aquatic pests
Languages : en
Pages : 64
Book Description
Delaware's Freshwater and Brackish-water Fishes
Author: Maynard S. RaaschPublisher:
ISBN:
Category : Brackish water fishes
Languages : en
Pages : 184
Book Description
Fishery Resources
Author: Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 258
Book Description
Presents annual activities of the Fishery Resources Program.
Pacific Salmon & their Ecosystems
Author: Deanna J. StouderPublisher: Springer Science & Business Media
ISBN: 1461563755
Category : Science
Languages : en
Pages : 681
Book Description
The symposium "Pacific Salmon and Their Ecosystems: Status and Future Options',' and this book resulted from initial efforts in 1992 by Robert J. Naiman and Deanna J. Stouder to examine the problem of declining Pacific salmon (Oncorhynchus spp.). Our primary goal was to determine informational gaps. As we explored different scientific sources, state, provincial, and federal agencies, as well as non-profit and fishing organizations, we found that the information existed but was not being communicated across institutional and organizational boundaries. At this juncture, we decided to create a steering committee and plan a symposium to bring together researchers, managers, and resource users. The steering committee consisted of members from state and federal agencies, non-profit organizations, and private industry (see Acknowledgments for names and affiliations). In February 1993, we met at the University of Washington in Seattle to begin planning the symposium. The steering committee spent the next four months developing the conceptual framework for the symposium and the subsequent book. Our objectives were to accomplish the following: (1) assess changes in anadromous Pacific Northwest salmonid populations, (2) examine factors responsible for those changes, and (3) identify options available to society to restore Pacific salmon in the Northwest. The symposium on Pacific Salmon was held in Seattle, Washington, January 10-12, 1994. Four hundred and thirty-five people listened to oral presentations and examined more than forty posters over two and a half days. We made a deliberate attempt to draw in speakers and attendees from outside the Pacific Northwest.