Decline in body mass, size, and condition of greater snow geese, 1975-94

Article Abstract:

Recent studies have linked variations in body mass and size of young geese at fledging with the availability of nutrients. A study assessed greater snow geese shot by hunters between 1975 and 1994, to determine whether mass, size and body condition showed annual changes, or long term trends. Thee were annual changes and declines in body mass of adult males and females and juvenile males and females. It is likely that changes in conditions of arctic brood-rearing areas are responsible for the declines in body condition, and that further deterioration may occur with continued growth in the population.

Measurement, Body size, Body weights and measures, Snow goose, Snow geese, Animal populations

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Effects of culling fox populations at the landscape scale: A spatially explicit population modeling approach

Article Abstract:

An individual-based, spatially explicit population model was used to investigate the efficacy of different culling practices in artificial landscapes. Population density in the absence of control was most strongly related to carrying capacity and the extent of immigration from surrounding fox populations.

United States, Science & research, Goods & services distribution, Channels of Distribution, Research, Distribution, Wildlife management, Population density, Foxes, Company distribution practices

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