Open Access. Powered by Scholars. Published by Universities.®

Biodiversity

Institution
Keyword
Publication Year
Publication
Publication Type

Articles 511 - 540 of 618

Full-Text Articles in Environmental Policy

Wpa News 24 (1989), World Pheasant Association May 1989

Wpa News 24 (1989), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (May 1989), number 24

Published by the World Pheasant Association


Wolf Population Survival In An Area Of High Road Density, L. David Mech Apr 1989

Wolf Population Survival In An Area Of High Road Density, L. David Mech

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Wolf mortality in a high-road-density area of Minnesota exceeds that in an adjacent wilderness, and is primarily human-caused. The wolf population there is maintained primarily by ingress from the adjacent wilderness areas. A road density of 0.58 km/km2 can be exceeded and the area still support wolves if it is adjacent to extensive roadless areas.


Wpa News 23 (1989), World Pheasant Association Feb 1989

Wpa News 23 (1989), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (February 1989), number 23

Published by the World Pheasant Association


Loss Of Biological Diversity: A Global Crisis Requiring International Solutions: A Report To The National Science Board, Craig Call Black, Perry L. Adkisson, Gardner Mallard Brown, Rita Rossi Colwell, Charles E. Hess, James B. Holderman, K. June Lindstedt-Siva, William A. Nierenberg, Peter Hamilton Raven, Theodore M. Smith, Edward O. Wilson, W. Franklin Harris Jan 1989

Loss Of Biological Diversity: A Global Crisis Requiring International Solutions: A Report To The National Science Board, Craig Call Black, Perry L. Adkisson, Gardner Mallard Brown, Rita Rossi Colwell, Charles E. Hess, James B. Holderman, K. June Lindstedt-Siva, William A. Nierenberg, Peter Hamilton Raven, Theodore M. Smith, Edward O. Wilson, W. Franklin Harris

Harold W. Manter Laboratory of Parasitology: Library Materials

Executive Summary

Biological diversity refers to the variety and variability among living organisms and the ecological complexes in which they occur. Diversity can be defined as the number of different items and their relative frequency. For biological diversity, these items are organized at many levels, ranging from complete ecosystems to the chemical structures that are the molecular basis of heredity. Thus, the term encompasses different ecosystems, species, genes, and their relative abundance (OTA, 1987).

There is an ongoing, unprecedented loss of the variety as well as absolute numbers of organisms-from the smallest microorganism to the largest and most spectacular of …


Wpa News 22 (1988), World Pheasant Association Nov 1988

Wpa News 22 (1988), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (November 1988), number 22

Published by the World Pheasant Association


Wpa News 21 (1988), World Pheasant Association Aug 1988

Wpa News 21 (1988), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (August 1988), number 21

Published by the World Pheasant Association


Wpa News 20 (1988), World Pheasant Association May 1988

Wpa News 20 (1988), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (May 1988), number 20

Published by the World Pheasant Association


Wpa News 19 (1988), World Pheasant Association Feb 1988

Wpa News 19 (1988), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (February 1988), number 19

Published by the World Pheasant Association


Pheasants: Symptoms Of Wildlife Problems On Agricultural Lands: Proceedings Of A Symposium Held At The 49th Midwest Fish And Wildlife Conference (Milwaukee, Wisconsin: December 8, 1987), Diana L. Hallett, William R. Edwards, George V. Burger Jan 1988

Pheasants: Symptoms Of Wildlife Problems On Agricultural Lands: Proceedings Of A Symposium Held At The 49th Midwest Fish And Wildlife Conference (Milwaukee, Wisconsin: December 8, 1987), Diana L. Hallett, William R. Edwards, George V. Burger

Galliformes Specialist Group and Affiliated Societies: Conference Proceedings

100 years of ringnecks: An historical perspective on pheasants in North America, George V. Burger

Distribution and abundance of the ring-necked pheasant in North America, Robert B. Dahlgren

Federal pheasants-Impact of federal agricultural programs on pheasant habitat, 1934-1985, Alfred H. Berner

Wildlife ppportunities within federal agricultural programs, Stephen J. Brady and Rex Hamilton

The dynamics of pheasant Abundance During the transition of intensive row-cropping in Illinois, Stanley L. Etter, Richard E. Warner, G. Blair Joselyn, and John E. Warnock

Habitat management: How well do we recognize the pheasant facts of life? Richard E. Warner

A population model as an aid …


Wolf Distribution And Road Density In Minnesota, L. David Mech, Steven H. Fritts, Glenn L. Radde, William J. Paul Jan 1988

Wolf Distribution And Road Density In Minnesota, L. David Mech, Steven H. Fritts, Glenn L. Radde, William J. Paul

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Distribution of the wolf (Canis lupus) in parts of Wisconsin (Thiel 1985) and Michigan and Ontario (Jensen et al. 1986) has been related to the density of roads passable by 2-wheel-drive vehicles. Wolves in those regions generally do not occur where road densities exceed 0.58 km/km2, whereas similar areas nearby with fewer roads do contain wolves.

In a small segment of the wolf range in Minnesota, wolves did not have territories where roads exceeded a density of 0.73 km/km2 (T. K. Fuller, Minnesota Department of Natural Resources, unpublished data). In another small area of Minnesota …


Wpa News 18 (1987), World Pheasant Association Dec 1987

Wpa News 18 (1987), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (December 1987), number 18

Published by the World Pheasant Association


Wpa News 17 (1987), World Pheasant Association Aug 1987

Wpa News 17 (1987), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (August 1987), number 17

Published by the World Pheasant Association


Wpa News 16 (1987), World Pheasant Association Jul 1987

Wpa News 16 (1987), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (July 1987), number 16

Published by the World Pheasant Association


Integrating Water Quality Objectives With Traditional Water Rights In California: The Sacramento–San Joaquin Delta Case, Ronald B. Robie Jun 1987

Integrating Water Quality Objectives With Traditional Water Rights In California: The Sacramento–San Joaquin Delta Case, Ronald B. Robie

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

14 pages (includes 1 map).


The Homestake Project & Water Quality Issues, Tad Foster Jun 1987

The Homestake Project & Water Quality Issues, Tad Foster

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

5 pages (includes 1 map).


Conflicts Between Water Rights Administration And Water Quality Protection, Jan D. Laitos Jun 1987

Conflicts Between Water Rights Administration And Water Quality Protection, Jan D. Laitos

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

43 pages.


Reconciling Large-Scale Water Development And Water Quality Effects, James S. Sanderson Jun 1987

Reconciling Large-Scale Water Development And Water Quality Effects, James S. Sanderson

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

6 pages.


Wetlands Protection: The 404 Program, Patrick A. Parenteau Jun 1987

Wetlands Protection: The 404 Program, Patrick A. Parenteau

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

13 pages.

Includes unsigned annotations by David Getches.


The Clean Water Act, Water Quality, And Water Use, Bruce D. Ray Jun 1987

The Clean Water Act, Water Quality, And Water Use, Bruce D. Ray

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

56 pages.

Includes unsigned annotations by David Getches.


Public Interest Review Of Water Right Allocation And Transfer In The West: Recognition Of Public Values, Douglas L. Grant Jun 1987

Public Interest Review Of Water Right Allocation And Transfer In The West: Recognition Of Public Values, Douglas L. Grant

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

37 pages.

Contains references.


New Developments In Water Rights On Public Lands: Federal Rights And State Interests, Christopher H. Meyer Jun 1987

New Developments In Water Rights On Public Lands: Federal Rights And State Interests, Christopher H. Meyer

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

25 pages.

Contains footnotes and 2 pages of references.


State Water Planning To Protect Public Needs, David H. Getches Jun 1987

State Water Planning To Protect Public Needs, David H. Getches

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

44 pages.


Nurturing Public Values In The Water Resource—The Montana Way, Matthew W. Williams Jun 1987

Nurturing Public Values In The Water Resource—The Montana Way, Matthew W. Williams

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

21 pages.

Contains references.


Emerging Policy And Strategy Choices For Protection Of The Groundwater Resource, Richard H. Braun Jun 1987

Emerging Policy And Strategy Choices For Protection Of The Groundwater Resource, Richard H. Braun

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

22 pages.

Contains 2 pages of references.


Instream Flow Protection In The Western States: A Survey And Comparison, Brian E. Gray Jun 1987

Instream Flow Protection In The Western States: A Survey And Comparison, Brian E. Gray

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

32 pages.

Contains references.


Federal Regulatory Rights In Water, Lawrence J. Macdonnell Jun 1987

Federal Regulatory Rights In Water, Lawrence J. Macdonnell

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

29 pages.

Contains 1 page of references.


Converting Conditional Water Rights To Instream Flow Protection: A Property Transfer Strategy, David L. Harrison Jun 1987

Converting Conditional Water Rights To Instream Flow Protection: A Property Transfer Strategy, David L. Harrison

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

64 pages.

Contains references.


Water As A Public Resource: The Legal Basis, Charles F. Wilkinson Jun 1987

Water As A Public Resource: The Legal Basis, Charles F. Wilkinson

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

37 pages.

Contains 2 pages of references.

Includes unsigned annotations by David Getches.


Public Access To Shorelines And Beaches: Alternative Approaches And The Taking Issue, Richard Hildreth Jun 1987

Public Access To Shorelines And Beaches: Alternative Approaches And The Taking Issue, Richard Hildreth

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

50 pages.


The Use Of “Nonnavigable” Water For Public Purposes, John E. Thorson Jun 1987

The Use Of “Nonnavigable” Water For Public Purposes, John E. Thorson

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

18 pages.

Contains references.