Caribou calf production and seasonal range quality during a population decline
Article Abstract:
The effect of seasonal home range on the productivity of caribou was investigated. To this end, the Southern Alaska Peninsula Caribou Herd was studied to analyze caribou calf production and seasonal range quality during population decline. Results showed that lichens were scarce throughout the caribou range while lichen biomass, cover and gross energy content were lower on the winter range of the group with higher calf production. It was also deduced that low productivity in caribou may be attributed to the scarcity of lichens on winter ranges while differences in calf productivity between two caribou groups may be due to quality of summer ranges.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1999
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Survival of greater white-fronted geese: effects of year, season, sex, and body condition
Article Abstract:
The survival of greater white-fronted geese was studied from 1979-182 in the Pacific Flyway, and a population model was developed. The population was stable in this period, though it had previously fallen. Adult females's survival was linked to their body condition, but this was not true for immature geese or adult males. Immature geese were most vulnerable at the time of their first hunting season. Hunting appears to be a factor affecting the survival of these geese.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1999
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Estimation of brood and nest survival: comparative methods in the presence of heterogeneity
Article Abstract:
Research is presented concerning the modification of the Mayfield method of estimating the survival rates of young animals or nestlings. Two additional methods are developed and tested.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 2001
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