Glen Sargeant
Glen Sargeant is a Research Wildlife Biologist at the USGS Northern Prairie Wildlife Research Center in Jamestown, North Dakota.
Science and Products
Filter Total Items: 15
Demographic response of black bears at Cold Lake, Alberta, to the removal of adult males
Previous reports described an increase in population density following the removal of 23 adult male black bears (Ursus americanus) from a 218-km2 study area near Cold Lake, Alberta (the CLSA). This finding plays a central role in continuing debates over population regulation in bears, but has recently been criticized because density estimates were based on assumptions that were not met. Moreover,
Authors
Glen A. Sargeant, Robert L. Ruff
Survival of postfledging mallards in northcentral Minnesota
Effective, economical management of waterfowl populations requires an understanding of age-, sex-, and cause-specific forces of mortality. We used radio telemetry to estimate survival rates of immature mallards (Anas platyrhynchos) from fledging to autumn migration in northcentral Minnesota. We monitored 48 females and 42 males during 1972-74 and observed 31 deaths during 2,984 exposure-days. We a
Authors
Ronald E. Kirby, Glen A. Sargeant
An improved method for determining the distribution of swift fox in Kansas
During 1997 and 1998 we tested a new method for determining the distribution of swift foxes (Vulpes velox) in Kansas. From a sampling frame of 30 counties in western Kansas, we selected a systematic sample of alternate townships in a checkerboard pattern. During September and October 1997 and August 1998, experienced observers delineated suitable swift fox habitat within each sample township and s
Authors
Christiane C. Roy, Marsha A. Sovada, Glen A. Sargeant
Science and Products
Filter Total Items: 15
Demographic response of black bears at Cold Lake, Alberta, to the removal of adult males
Previous reports described an increase in population density following the removal of 23 adult male black bears (Ursus americanus) from a 218-km2 study area near Cold Lake, Alberta (the CLSA). This finding plays a central role in continuing debates over population regulation in bears, but has recently been criticized because density estimates were based on assumptions that were not met. Moreover,
Authors
Glen A. Sargeant, Robert L. Ruff
Survival of postfledging mallards in northcentral Minnesota
Effective, economical management of waterfowl populations requires an understanding of age-, sex-, and cause-specific forces of mortality. We used radio telemetry to estimate survival rates of immature mallards (Anas platyrhynchos) from fledging to autumn migration in northcentral Minnesota. We monitored 48 females and 42 males during 1972-74 and observed 31 deaths during 2,984 exposure-days. We a
Authors
Ronald E. Kirby, Glen A. Sargeant
An improved method for determining the distribution of swift fox in Kansas
During 1997 and 1998 we tested a new method for determining the distribution of swift foxes (Vulpes velox) in Kansas. From a sampling frame of 30 counties in western Kansas, we selected a systematic sample of alternate townships in a checkerboard pattern. During September and October 1997 and August 1998, experienced observers delineated suitable swift fox habitat within each sample township and s
Authors
Christiane C. Roy, Marsha A. Sovada, Glen A. Sargeant