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Abstract
| Small mammals were surveyed in a wet meadow habitat of the Upper Mississippi
River floodplain by live trapping in late July and August 1998. Two trapping grids
were established at Halfway Creek wet meadow area of the Upper Mississippi
River National Wildlife and Fish Refuge, near Midway, WI. One grid of 25 traps
set one meter apart was placed in a section of meadow that was burned in May. The
other grid of 50 traps was established on an unburned section. The trapping was
conducted for a total of eight nights on the burned and 14 nights on the unburned
plots. Meadow voles (Microtus pennsylvanicus) were the most abundant species
captured on both the burned (35) and unburned (57) sites. Seven short-tailed shrews
(Blarina brevicauda) were captured, all at the unburned site. Meadow jumping
mice (Zapus hudsonius), a species previously not reported in La Crosse County,
were captured in both grids in very small numbers. Physical characteristics such as
sex, reproductive condition, and weight of individual animals were examined and
compared between plots. |
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