lo University of Michigan 



Modified and Artificial Habitats 



Second-growth forest and scrub habitat: 



Muslcla noveboracensis noveboracensis. Xew York weasel, i. 



Mephitis nigra. Eastern skunk, i. 



Peromyscus leucop-us noveboracensis. Northern white-footed mouse. 5. 



Microtus pennsylvanicus pennsylvanicus. Pennsylvania vole. 4. 



Mus musculus musculus. House mouse, i. 



Marmota moyiax monax. Southern woodchuck. i. 



Sciurus hudsonicns loquax. Southern red squirrel, i. 



Syhilagus floridaniis mearnsii. Mearns cottontail. 5. 



Small trees and brush have grown up along the edges of many 

 of the ravines in the cleared fields in and surrounding the preserve. 

 Many of the trees are oaks, but beech and hard maple also occur, 

 a few of them being relics from the original forest. Considerable 

 brush is present, formed by a large variety of species. A few 

 other small patches, especially in ravine bottoms and on flood- 

 plains have been allowed to grow up to brush and small trees. In 

 nearly every case these areas are heavily pastured. 



The conditions here included in the second-growth forest and 

 scrub habitat are not homogeneous, but differ in each different 

 location where the habitat is found, tree and shrub species abun- 

 dant in one situation not being present in another. The habitat 

 is usually narrow in extent, being often confined to the width of 

 the steep ravine wall. 



Owing to its poor development and uncertain characteristics 

 no intensive trapping was done in this type of habitat. A weasel 

 was trapped in open beech-maple-oak forest at the edge of a 

 cleared ravine, and a woodchuck was shot in the same type of 

 habitat. Another woodchuck and a skunk were trapped at 

 different times in low willow brush on the banks of the river just 

 north of the woods. Northern white-footed mice, Pennsylvania 

 voles, and a house mouse were trapped in thick oak brush and 

 trees alongside a road north of the -woods. A red squirrel was 

 shot in second-growth oak and aspen woods in the north part 

 of the preser^'e, and they were seen in open woods along ravines. 



