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Catch-Effort Estimation Of White-Tailed Deer Population Size, James M. Novak, Kim T. Scribner, William D. Dupont, Michael H. Smith
Catch-Effort Estimation Of White-Tailed Deer Population Size, James M. Novak, Kim T. Scribner, William D. Dupont, Michael H. Smith
Faculty Research & Creative Activity
Estimation of population size is important for most research in population biology and in the management of game species. Using a stochastic, catch-effort, competing risks model (Dupont 1983), we estimated the population size of the Savannah River Site white-tailed deer (Odocotleus virginianus) herd for 1965-86. Population size varied markedly in response to changes in both hunting method and pressure. Still hunters preferentially harvested older animals compared to dog hunters. Deer were 2.37 times more susceptible to harvest from dog hunting than from still hunting. Hunter-induced mortality was estimated as 1.73 and 4.10 times as large as nonhunting mortality for still …
Frequency Distribution Of Conception Dates In A White-Tailed Deer Herd, James M. Novak, Olin E. Rhodes, Michael H. Smith, Paul E. Johns
Frequency Distribution Of Conception Dates In A White-Tailed Deer Herd, James M. Novak, Olin E. Rhodes, Michael H. Smith, Paul E. Johns
Faculty Research & Creative Activity
Conception dates of white-tailed deer, Odocoi/eus virginia1111s (Zinunennann, 1780) were estimated for the breeding periods of 1974 - 76 and 1984 using fall and winter- spring fetal data. Conception dates estimated from data collected in the fall were biased. This bias resulted in an earlier mean conception date than that based on information which included data from later breeding females. Mean breeding dates differed significantly between female age classes due to delayed conception in fawns which also resulted in a skewed frequency distribution of conception dates. The frequency distribution of conception dates was leptokurtotic, suggesting that the distribution is constrnincd …