SREL Reprint #2124

 

 

 

Trap Height and Capture Success of Arboreal Small Mammals: Evidence from Southern flying Squirrels (Glaucomys volans)


THOMAS S. RISCH1 AND MATTHEW J. BRADY2

Department of Zoology and Wildlife Science, Auburn University, Auburn, Alabama 36849, and Savannah River Ecology Laboratory, Drawer E, Aiken, South Carolina 29802

Abstract:

Studies of small mamnials often rise live traps, but the effect of different trapping heights on capture effectiveness of arboreal mammals has not been directly addressed. We compared the capture success of three trap heights ("low" = 2 m, "meditim" = 4.5-5 m, and "high" = 8-8.5 m) in capturing arboreal mammals. Southern flying squirrels (Glaucomys volans) constituted 86% of the captures. Low traps captured approximately half as many squirrels (I 5) as either mediuni (30) or high traps (28), and individual squirrels were recaptured at a single trap height more often than expected based on chance. Traps at the three heights exhibited significantly heterogeneity in initially capturing individual flying squirrels (i.e., previously unmarked squirrels). We reject the hypothesis that trap height does not affect capture success of southern flying squirrels in southern forests during the stimnier. We discuss the general importance of trap height in studies of mammalian community ecology and conservation.

 

SREL Reprint #2124

Risch, T.S. and M.J. Brady. 1996. Trap height and capture success of arboreal small mammals: evidence from southern flying squirrels (Glaucomys volans). American Midland Naturalist 136:346-351.

 

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