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Articles 541 - 554 of 554
Full-Text Articles in Environmental Policy
Pheasants In Asia 1979: Proceedings Of The First International Symposium On Pheasants In Asia (November 21-23, 1979 : Kathmandu, Nepal), Keith Howman, Christopher Savage
Pheasants In Asia 1979: Proceedings Of The First International Symposium On Pheasants In Asia (November 21-23, 1979 : Kathmandu, Nepal), Keith Howman, Christopher Savage
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
Message from His Majesty King Birendra Bir Bikram Shah Dev
Inaugural Address by the Rt. Hon. Prime Minister
Welcome Address by the Chief Conservator of Forests
Reply by Keith Howman, Chairman of the Conference
Keynote Papers
Forestry, National Parks and Conservation in Nepal, B. N. Upreti
Pheasant Conservation: A Minimum Programme? Christopher D.W. Savage
Reports on the Status of Pheasants
Nepal (1) Introductory Paper, Karna Sarkya
Nepal (2) Status of the Pheasants of Nepal, J. O. M. Roberts
Status of the Pheasants in Pakistan, Z. B. Mirza
Status of the Pheasants, Malaysia and Indonesia, G. W. H. Davison
The Himalayas: …
Population Regulation In Wolves, Jane M. Packard, L. David Mech
Population Regulation In Wolves, Jane M. Packard, L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
The possibility of social regulation of wolf populations has been discussed in the literature for several years. Some of the first ecological studies of wolves indicated that their populations did not increase as rapidly as was theoretically possible, and that they reached a saturation point apparently not set by food. Subsequent captive studies demonstrated the existence of social mechanisms possibly capable of regulating population growth. However, the importance of these factors in wild populations has not been established. This paper has four objectives: (1) to evaluate the existing concept of "intrinsic limitation," (2) to propose that wolf population dynamics may …
Wolf Howling And Its Role In Territory Maintenance, Fred H. Harrington, L. David Mech
Wolf Howling And Its Role In Territory Maintenance, Fred H. Harrington, L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
The wolf (Canis lupus) is a wide-ranging social carnivore with a complex spatial organization (MECH, 1972; 1973). The precise manner in which this organization is maintained is unknown, but territory advertisement using olfactory and acoustic modes seems to be involved.
The acoustic mode includes primarily howling. Within a wolf pack, howling may be useful to reassemble separated members (MECH, 1966; THEBERGE & FALLS, 1967), and may communicate information on individual identity, location, and other behavioral and environmental contingencies (THEBERGE & FALLS, 1967). Between packs, however, howling may serve to advertise territory, communicating the locations of packs and thus …
Relating Wolf Scat Content To Prey Consumed, Theodore J. Floyd, L. David Mech, Peter A. Jordan
Relating Wolf Scat Content To Prey Consumed, Theodore J. Floyd, L. David Mech, Peter A. Jordan
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
In 9 trials, captive wolves (Canis lupus) were fed prey varying in size from snowshoe (Lepus americanus) to adult deer (Odocoileus virginianus), and the resulting scats were counted. collectible scats were distinguished from liquid, noncollectible stools. In collectible scats, the small prey occurred in greater proportion relative to the prey's weight, and in lesser proportion to the prey's numbers, than did the remains of larger prey. A regression equation with an excellent the data (r2 = 0.97) was derived to estimate the weight of prey eaten per collectible scat for With this information …
Productivity, Mortality, And Population Trends Of Wolves In Northeastern Minnesota, L. David Mech
Productivity, Mortality, And Population Trends Of Wolves In Northeastern Minnesota, L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
Population parameters, mortality causes, and mechanisms of a population decline were studied in wolves (Canis lupus lycaon) from 1968 to 1976 in the Superior National Forest. The main method was aerial radio-tracking of 129 wolves and their packmates. Due to a decline in white-tailed deer (Odocoileus virginianus), the wolf population decreased during most of the study. Average annual productivity varied from 1.5 to 3.3 pups per litter, and annual mortality rates from 7 to 65 percent. Malnutrition and intraspecific strife accounted equally for 58 percent of the mortality; human causes accounted for the remainder. As wolf …
Wolf-Pack Buffer Zones As Prey Reservoirs, L. David Mech
Wolf-Pack Buffer Zones As Prey Reservoirs, L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
Abstract. In a declining herd, surviving deer inhabited overlapping edges of wolf- pack territories. There, wolves hunted little until desperate, in order to avoid fatal encounters with neighbors. Such encounters reduce wolf numbers and predation pressure and apparently allow surviving deer along territory edges to repopulate the area through dispersal of their prime, less vulnerable offspring into territory cores.
Proceedings Of Perdix I: Hungarian Partridge Workshop, The Wildlife Society, Central Mountains And Plains Section, The Wildlife Society, North Dakota Chapter, North Dakota Game And Fish Department
Proceedings Of Perdix I: Hungarian Partridge Workshop, The Wildlife Society, Central Mountains And Plains Section, The Wildlife Society, North Dakota Chapter, North Dakota Game And Fish Department
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
Perdix I has succeeded in its major objective of bringing Hungarian partridge research and management people together in one place for introduction to one another and for a mutually beneficial exchange of information. A major communications bridge has been gapped by the informalization that occurs with the development of face-to-face relationships, a realization of how similar everyone's technical problems are, and an expression of concern regarding the need to develop work plans and guidelines to help direct future research and management by avoiding unnecessary duplication that often occurs with poor communications. As regards communications, it is refreshing to know that …
Research In National Parks, Robert J. Baker, Hugh H. Genoways
Research In National Parks, Robert J. Baker, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
This was our first involvement with research in the National Parks and we would like to make some observations concerning interactions among basic researchers, park personnel, and the philosophy on which our park systems are based. Our conclusions are not based only on our own experiences, but also on conversations with other basic researchers (especially those who contributed to this symposium) and with park personnel who have aided and worked with other researchers who were not employed by the National Park Service.
Canis Lupus., L. David Mech
Canis Lupus., L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
Order Carnivora, Family Canidae. The genus Canis includes eight species. Approxi- mately 24 New World and eight Old World subspecies of C. lupus are recognized, the number depending on authorities accepted. For summary, see Mech (1970); for full synonymy, see Pocock (1935), Goldman (1944), Ellerman and Morrison- Scott (1951), Novikov (1956), and Hall and Kelson (1959).
Proceedings Of The First National Bobwhite Quail Symposium (April 23-26, 1972 : Oklahoma State University, Stillwater, Oklahoma), John A. Morrison, James C. Lewis
Proceedings Of The First National Bobwhite Quail Symposium (April 23-26, 1972 : Oklahoma State University, Stillwater, Oklahoma), John A. Morrison, James C. Lewis
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
Panel Session I: Trends in Principal Management Themes
Bobwhite Quail on Shooting Preserves, Edward L. Kozicky
The Traditional Southern Bobwhite Quail Plantations, Leon Neel
Bobwhite Quail Management on State Controlled Wildlife Areas, Ralph J. Ellis
Trends In Management of the Bobwhite Quail on Commercially Owned Forest Land and National Forests of the Southern Region, Dale H. Arner
Panel Session II: Heretical Ideas about Bobwhite Ecology and Management
The One Quail Per Acre Myth, Forest E. Kellogg, Gary L. Doster, Edwin V. Komarek, Sr., and Ray Komarek
Second Broods in Bobwhite Quail, Jack A. Stanford
Changes of Covey Affiliation by Bobwhite …
Antelope Creek, Dead Mans Run And Middle Creek: Salt Creek Basin, Volume Ii: Summary Report, United States Army Corps Of Engineers, Omaha District
Antelope Creek, Dead Mans Run And Middle Creek: Salt Creek Basin, Volume Ii: Summary Report, United States Army Corps Of Engineers, Omaha District
United States Army Corps of Engineers, Omaha District
Antelope Creek and Dead Mans Run, right bank tributaries of Salt Creek, rise within the Lincoln metropolitan area near the town of Cheney, and 84th and A Streets, respectively. These streams flow in a northwesterly direction and drain 14 and 10.5 square miles, respectively. Middle Creek, a left bank tributary of Salt Creek, rises in eastern Seward County and drains 100 square miles as it flows in an easterly direction to join Salt Creek in Lincoln. Urban development in these valleys is concentrated within the Lincoln city limits. Elsewhere the valleys are rural in character, with the land devoted to …
Antelope Creek, Dead Mans Run And Middle Creek: Salt Creek Basin, Volume Ii: Technical Appendix, United States Army Corps Of Engineers, Omaha District
Antelope Creek, Dead Mans Run And Middle Creek: Salt Creek Basin, Volume Ii: Technical Appendix, United States Army Corps Of Engineers, Omaha District
United States Army Corps of Engineers, Omaha District
This report on Antelope Creek, Dead Mans Run, and Middle Creek is the second in a series of flood plain information reports being prepared for streams in the Lincoln, Nebraska metropolitan area. Volume I of this series, published in August 1964, described flood hazard areas of Salt Creek Haines Branch, and Beal Slough.
This Technical Appendix, covering Antelope Creek, Dead Mans Run, and Middle Creek, is presented in four sections. Section A presents information applicable to all three streams. Sections B, C, and D are devoted to information applicable to the individual streams.
Symposium O Koroptvi / Symposium On Partridge: Výzkumný Űstav Lesniho Hospodářství A Myslivosti Československý Myslivecký Svaz, Czechoslovak Forestry And Game Management Research Institute, Czechoslovak Hunting Union
Symposium O Koroptvi / Symposium On Partridge: Výzkumný Űstav Lesniho Hospodářství A Myslivosti Československý Myslivecký Svaz, Czechoslovak Forestry And Game Management Research Institute, Czechoslovak Hunting Union
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
English abstract
The Symposium on Partridge was organized by the Forestry and Czechoslovak Game Management Research Institute and the Czechoslovak Hunting Union and held in Prague, Czechoslovakia in October 1965. Participants in the symposium were specialists and scientific workers from Czechoslovakia and some scientists from abroad. There were two major themes: 1. the present state of partridge research and 2. conservation issues, including the problems and prospects of partridge stocks.
Papers concerned biology of partridges, ecology, population dynamics, migration, nestng, food, influence of predators, health, helminths, gapes, hemogram, rearing of partridges, rearing of chicks, penning, wintering in pens, protection during …
Factors Affecting Nesting Success Of The Canvasback In The Aspen Parklands, Jerome H. Stoudt
Factors Affecting Nesting Success Of The Canvasback In The Aspen Parklands, Jerome H. Stoudt
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
The Minnedosa study area is located in the southwestern portion of Manitoba just south of the town of Minnedosa. It is 90 square miles in size and roughly square in shape. The Aspen Parkland, in which the study area is located, is characterized by gently rolling terrain and black soils. Mixed farming is the rule with emphasis on small grain production consisting of wheat, barley, and oats. Roughly 50 percent of the water areas in the parkland are ringed with aspen, Populus tremuloides, and large blocks of aspen are interspersed throughout the area. The Minnedosa area differs because of …