Zobrazeno 1 - 10
of 60
pro vyhledávání: '"David C. Bowden"'
Autor:
Thomas M. Pojar, David C. Bowden
Publikováno v:
Journal of Wildlife Management. 68:550-560
Declining mule deer (Odocoileus hemionus) populations resulting from apparent low recruitment brought management and political focus on neonatal fawn survival. We captured mule deer fawns on the Uncompahgre Plateau (5,957 km2) in west-central Colorad
Publikováno v:
Wildlife Society Bulletin. 32:56-68
Counts of birds attending leks traditionally have been used as an index to the population size of greater sage-grouse (Centrocercus urophasianus) and, more recently, as a means to estimate population size. The relationship between this index and the
Publikováno v:
Diseases of Aquatic Organisms. 49:171-178
We exposed 9 wk old rainbow trout Oncorhynchus mykiss to ambient levels of Myxo- bolus cerebralis infectious stages at 4 sites of suspected differing infectivity in the Colorado River. Exposure was estimated by periodic filtration of river water at e
Publikováno v:
Journal of Aquatic Animal Health. 11:312-329
Recent failures in recruitment of rainbow trout Oncorhynchus mykiss in the Colorado River in Middle Park, Colorado, USA, led to studies of the effect of the myxosporean parasite Myxobolus cerebralis, the causative agent of whirling disease, on the wi
Publikováno v:
Ecological Applications. 6:218-227
In many areas of western North America, populations of elk are believed to harm production of cattle by competing with them for limited supplies of native forage. We examined effects of variation in the population density of elk (Cervus elaphus canad
Publikováno v:
The Journal of Wildlife Management. 67:1
Finite population sampling theory is useful in estimating total population size (abundance) from abundance estimates of each sampled unit (quadrat). We develop estimators that allow correlated quadrat abundance estimates, even for quadrats in differe
Publikováno v:
The Journal of Wildlife Management. 66:757
We studied population subdivision and density-dependent and independent factors influencing population processes between 1965 and 2001 for elk (Cervus elaphus) inhabiting Rocky Mountain National Park (park) and the adjacent Estes Valley (town), Color
Publikováno v:
The Journal of Wildlife Management. 64:1013
Management of an ungulate population to maintain it at a desired level requires monitoring population size and vital rates to be able to harvest the population wisely. We present equations for the optimal allocation of resources for estimating total
Publikováno v:
The Journal of Wildlife Management. 64:473
Regulating the abundance of ungulate populations using hunting can prevent populations from reaching levels that cause harm to natural and human dominated systems. However, there are an increasing number of cases where hunting is infeasible, and in s