Study on the relationship between species composition changes of rodents and distances from the boundary between the forest types on the plantation
2006
Ishii, T.(Tokyo Univ. of Agriculture (Japan)) | Kawahara, T.
How is forest biodiversity lost in the unmanaged forest that is not thinned and laid waste? The loss of biodiversity was investigated with wood mice for six months. In order to show how the habitation of wood mice is affected by the difference between forest types and distances from the boundary between the types, four investigation plots were prepared: The first plot was in the secondary broadleaf forest, not near the boundary. The second one was near the boundary and in the artificial coniferous forest. The third was between the boundary and the middle of the conifer forest. And the last plot was in the middle of the coniferous forest.196 Sherman traps were set every month and the total number of the traps came to 1176. The results are as follows: In the first plot 31 mice were caught; the number was equal to 47 percent of all the captured mice. In the second one 21 mice were caught; the number was equal to 32 percent. In the fourth one few mice were caught. These results show that wood mice were found on the edge of the artificial coniferous forest that borders on the secondary broadleaf forest and is under the influence of it. This will suggest that forest biodiversity may be promoted even in the artificial coniferous forest if it is considered that the conifer forest is appropriately located next to the broadleaf forest.
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