Energetic influences on the life history of Glaucomys volans

Article Abstract:

The southern flying squirrel (Glaucomys volans) is arboreal, a glider that consumes principally hard masts and remains active during winter. G. volans is subject to rapid heat loss and high energetic costs because of its smaller size and nocturnal, gliding lifestyle. Winter activity aggravates this problem. G. volans is able to reduce energy expenditure by both physiological (low basal metabolism and conductance throughout the year) and behavioral (aggregations in cavity nests and low foraging activity during winter) adaptations. It hoards masts in autumn, which provides sufficient energy for both thermoregulation and reproduction during winter.

Metabolism, Animal behavior

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Home range and density estimates for the northern flying squirrel, Glaucomys sabrinus, in western Oregon

Article Abstract:

The northern flying squirrel (Glaucomys sabrinus) was studied in western Oregon using livetrapping and radiotelemetry. The home range for the G. sabrinus, based on a combination of trapping and telemetry data, is 3.4-4.9 ha. The density of G. sabrinus in old-growth timber stands is about six times greater than in the second-growth stands. This observed difference is due to greater availability and variety of den sites in the old growth and the abundance of food sources.

Home range, Oregon, Flying squirrels, Mammal populations

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A reevaluation of the role of prairie dogs in Great Plains grasslands

Article Abstract:

Numerous scientific and popular press articles have argued for federal protection for prairie dogs. However, other published studies reveal that the effect of prairie dogs on other animals is not well understood. Some have even suggested that these prairie dogs may actually adversely affect the grasslands throughout the Great plains and other areas.

Environmental aspects, Prairie dogs, Grasslands, Great Plains

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