Mortality causes and survival estimates for adult female Columbian black-tailed deer

Article Abstract:

Black-tailed deer populations in British Columbia continue to decline, despite aggressive wildlife management strategies which have been in place since the 1970s. A study of the mortality causes and survival of adult female deer showed that predation accounted for 61% of animal deaths. Moreover, the results indicated that most of deaths occur during seasonal movement. Consequently, it is suggested that old, intact forests at low elevations should be maintained to reduce the impact of predation on black-tailed deer populations.

Environmental aspects, Mule deer, British Columbia, Animal populations

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Factors influencing wild turkey hen survival in southcentral Iowa

Article Abstract:

The decline in Iowa's wild turkey population began in the late 1980s and has made necessary a revised estimate of population parameters. A new study focuses on factors influencing turkeyhen survival and investigates the survival of 126 eastern wild turkey hens in southcentral Iowa between 1993 and 1996. The study is unable to give the exact cause of population decline but suggests that it is probably related to a decline in reproduction rather than changes in hen survival.

Patient outcomes, Mortality, Iowa, Bird populations, Wild turkeys

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Patterns of artificial nest depredation in a large floodplain forest

Article Abstract:

Large forest patches could be primary habitats for floodplain predators, according to research using artificial bird nests to investigate the relative impact of local habitat features and the surrounding landscape on the probability of songbird nest depredation in floodplain forests.

Floodplains

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