GHMAGolden Horseshoe Mustang Association
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We live-trapped chipmunks twice weekly from April to October 1992-1995 at each of eight, 1-ha plots at the Barrens GHMA using nine Tomahawk live traps (10- X 10- X 36-cm) per plot.
We captured and marked 187 chipmunks during 5285 trap-h at the Barrens GHMA (Table 1), where a trap-h is equivalent to one trap opened for 1 h.
- Number and reproductive condition of male and female eastern chipmunks captured, 1992-1995 Reproductive condition Sex Forest sector Breeding(a) Nonbreeding Total Male(b) Uncut 18 21 39 Managed 27 26 53 Female(c) Uncut 20 28 48 Managed 15 32 47 Total 80 107 187 a Scrotal for males; pregnant, lactating, or estrous condition for females b Nonsignificant difference between forest sectors; [[Chi].sup.2] = 0.21, 1 df, P [greater than] 0.05 c Nonsignificant difference between forest sectors; [[Chi].sup.2] = 0.97, 1 df, P [greater than] 0.05 The average weight of adult chipmunks at the Barrens GHMA was 81.5 ([+ or -]0.8) g (Table 3).
The forested corridors within the managed forest sector provide similar habitat requirements to a mature, uncut forest at the Barrens GHMA (Mahan and Yahner, 1996).
Forty active burrow sites were found and examined within our 8, 1-ha plots at the Barrens GHMA in 1993.
Four of the 17 habitat variables differed significantly (P [less than or equal to] 0.05) between the uncut and forested corridor sector of Barrens GHMA (Table 1).
Structural variables, such as logs and stumps, were associated with burrow systems of eastern chipmunks at the Barrens GHMA. Logs and stumps provided runways for chipmunks and perch sites while feeding and grooming (Ryan and Larson, 1976; Elliott, 1978; Yahner, 1992).
However, chipmunks at the Barrens GHMA inhabited burrows with relatively little bare ground and an intermediate cover of short shrubs, especially in the uncut forest sector.