EFFECTS OF TIMBER HARVESTING ON SOUTHERN APPALACHIAN SALAMANDERS

被引:198
作者
PETRANKA, JW
ELDRIDGE, ME
HALEY, KE
机构
关键词
D O I
10.1046/j.1523-1739.1993.07020363.x
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
we compared the species richness and abundance of salamanders on six recent clearcuts (< 10 years old) with that of salamanders on 34 mature forest stands (> 50 years old) in southern Appalachian forests in western North Carolina, U.S.A. Catches of salamanders from plots in mature forest stands were about five times higher than those on recent clearcuts. Almost all species and major taxonomic groups of salamanders were adversely affected by timber removal. Mean number of species collected per plot was about twice as great in mature forest stands as in clearcuts. Analyses of stand age versus salamander catch for 4 7 plots indicate that 50-70 years are required for populations to return to predisturbance levels following cutting. We conservatively estimate that clearcutting in US. national forests in western North Carolina results in a loss of nearly 14 million salamanders annually. It also is chronically reducing regional populations by more than a quarter of a billion salamanders (9%) below that which could be sustained if mature forests were not cut.
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页码:363 / 377
页数:15
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