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Articles 511 - 540 of 566
Full-Text Articles in Environmental Policy
Wpa News 23 (1989), World Pheasant Association
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
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
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
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
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
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
Wolf Distribution And Road Density In Minnesota, L. David Mech, Steven H. Fritts, Glenn L. Radde, William J. Paul
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 …
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
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 …
Wpa News 18 (1987), World Pheasant Association
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
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
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
Wpa News 15 (1987), World Pheasant Association
Wpa News 15 (1987), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (March 1987), number 15
Published by the World Pheasant Association
Proceedings Of Perdix Iv: Gray Partridge Workshop, Richard O. Kimmel, John W. Schulz, George J. Mitchell
Proceedings Of Perdix Iv: Gray Partridge Workshop, Richard O. Kimmel, John W. Schulz, George J. Mitchell
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
Foreword, John W. Schulz Introduction to Perdix IV, Ted W. Weins
The effect of insect abundance on gray partridge chick survivorship in New York, Jody W. Enck
Foods and feeding behavior of young gray partridge in Minnesota, Richard Erpelding, Richard O. Kimmel, and Drake J. Lockman
Are the results of research on the partridge in Britain relevant to the conservation of this species in North America? G. R. Potts
Imprinting: A technique for wildlife research, Richard O. Kimmel and W. M. Healy
The Wisconsin experiment: Perdix IX Workshop, Robert T. Dumke and William J. Vander Zouwen, Jr.
Gray partridge estabilshment …
Wpa News 14 (1986), World Pheasant Association
Wpa News 14 (1986), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (November 1986), number 14
Published by the World Pheasant Association
Mortality Of White-Tailed Deer In Northeastern Minnesota, Michael E. Nelson, L. David Mech
Mortality Of White-Tailed Deer In Northeastern Minnesota, Michael E. Nelson, L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
Abstract: Two hundred nine white-tailed deer (Odocoileus virginianus) were radiotracked in the central Superior National Forest, Minnesota, from 1973 through winter 1983-84; 85 deaths were recorded. Annual survival was 0.31 for fawns (<1.0 years old), 0.80 for yearling (1.0-2.0 years old) females, 0.41 for yearling males, 0.79 for adult (≥2.0 years old) females, and 0.47 for adult males. Monthly survival rates were high from May through December (0.94-1.00), except for yearling (0.60) and adult (0.69) bucks during the November hunting season. Most mortality occurred from January through April when gray wolf (Canis lupus) predation was an important mortality source for all cohorts. Yearlings males were most vulnerable to hunting and adult males to wolf predation.
Wpa News 13 (1986), World Pheasant Association
Wpa News 13 (1986), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (July 1986), number 13
Published by the World Pheasant Association
Relationship Between Snow Depth And Gray Wolf Predation On White-Tailed Deer, Michael E. Nelson, L. David Mech
Relationship Between Snow Depth And Gray Wolf Predation On White-Tailed Deer, Michael E. Nelson, L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
Abstract: Survival of 203 yearling and adult white-tailed deer (Odocoileus virginianus) was monitored for 23,441 deer days from January through April 1975-85 in northeastern Minnesota. Gray wolf (Canis lupus)predation was the primary mortality cause, and from year to year during this period, the mean predation rate ranged from 0.00 to 0.29. The sum of weekly snow depths/month explained 51% of the variation in annual wolf predation rate, with the highest predation during the deepest snow.
Wpa News 12 (1986), World Pheasant Association
Wpa News 12 (1986), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (April 1986), number 12
Published by the World Pheasant Association
Wpa News 11 (1986), World Pheasant Association
Wpa News 11 (1986), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (February 1986), number 11
Published by the World Pheasant Association
Third International Pheasant Symposium (January 1986 : Thailand), World Pheasant Association
Third International Pheasant Symposium (January 1986 : Thailand), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
Session 1: Thailand
Pheasants of Thailand, Somtob Norapuck
Habitat Destruction in Thailand, Chompool
Session 2: Adaptability of South-East Asian Pheasants
Some views of the adaptability of Rain Forest Pheasants, G. W. H. Davison
Session 3: Adaptability of Himalayan Pheasants
The Adaptability of the Pheasants of Bangladesh in Disturbed Habitats, Md Sohrab Uddin Sarker
Human Impact on Pheasant habitat and numbers of pheasants on Pipar, Central Nepal, Nick Picozzi
Session 4: The Adaptability of Pheasants in China and Pakistan
Summary of Western Tragopan Project in Pakistan with recommendations for conservation of the species, Kamal Islam and John A Crawford
The Breeding …
Wpa News 10 (1985), World Pheasant Association
Wpa News 10 (1985), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (November 1985), number 10
Published by the World Pheasant Association
Wpa News 9 (1985), World Pheasant Association
Wpa News 9 (1985), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (July 1985), number 9
Published by the World Pheasant Association
Wpa News 8 (1985), World Pheasant Association
Wpa News 8 (1985), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (April 1985), number 8
Published by the World Pheasant Association
Wpa News 7 (1985), World Pheasant Association
Wpa News 7 (1985), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (January 1985), number 7
Published by the World Pheasant Association
Bobwhite Thesaurus, Thomas G. Scott
Bobwhite Thesaurus, Thomas G. Scott
Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials
The Bobwhite Thesaurus was assembled with the belief that it would make the voluminous literature more accessible. Publications on the bobwhite have become so numerous and have been published in so many different places that today's bobwhite researcher is seldom able to conduct the library search required to unearth all pertinent material. This results in failure to acknowledge and use prior findings.
An effort has been made to seek out and index all publications issued prior to 1983 that contain information on the bobwhite. All publications found have been included irrespective of their apparent worth excepting anonymous papers. Publications which …
Wpa News 6 (1984), World Pheasant Association
Wpa News 6 (1984), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (September 1984), number 6
Published by the World Pheasant Association
Wpa News 5 (1984), World Pheasant Association
Wpa News 5 (1984), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (May 1984), number 5
Published by the World Pheasant Association
Simulation Analyses Of Space Use: Home Range Estimates, Variability, And Sample Size, Marc Bekoff, L. David Mech
Simulation Analyses Of Space Use: Home Range Estimates, Variability, And Sample Size, Marc Bekoff, L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
Simulations of space use by animals were run to determine the relationship among home range area estimates, variability, and sample size (number of locations). As sample size increased, home range size increased asymptotically, whereas variability decreased among mean home range area estimates generated by multiple simulations for the same sample size. Our results suggest that field workers should ascertain between 100 and 200 locations in order to estimate reliably home range area. In some cases, this suggested guideline is higher than values found in the few published studies in which the relationship between home range area and number of locations …
Wpa News 4 (1984), World Pheasant Association
Wpa News 4 (1984), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (January 1984), number 4
Published by the World Pheasant Association
Proceedings Of Perdix Iii: Gray Partridge And Ring-Necked Pheasant Workshop, Robert T. Dumke, Richard B. Stiehl, Richard B. Kahl
Proceedings Of Perdix Iii: Gray Partridge And Ring-Necked Pheasant Workshop, Robert T. Dumke, Richard B. Stiehl, Richard B. Kahl
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
Foreword
Opening remarks: How far we have come, Robert A. McCabe
Gray Partridge Ecology and Management
Grey partridge population dynamics: Comparisons between Britain and North America, G. Richard Potts
Changes in the composition of the autumn food of the partridge in western Finland over 20 years, Erkki Pulliainen
Body condition of gray partridge during fall and winter in Saskatchewan, Ross W. Melinchuk and John P. Ryder
Nesting biology of gray partridge in east-central Wisonsin, Kevin E. Church
Procedures for introducing gray partridge into unoccupied range in New York, Kevin E, Church, William F. Porter, and David E. Austin
Landowner and …