ARE BOREAL BIRDS RESILIENT TO FOREST FRAGMENTATION? AN EXPERIMENTAL STUDY OF SHORT‐TERM COMMUNITY RESPONSES
ARE BOREAL BIRDS RESILIENT TO FOREST FRAGMENTATION? AN EXPERIMENTAL STUDY OF SHORT‐TERM COMMUNITY RESPONSES
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北方鸟类对森林破碎化有抵抗力吗？一项关于短期社区反应的实验研究
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
S. Hannon
中科院分区：
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作者：
F. Schmiegelow;Craig S. Machtans;S. Hannon
我们研究了栖息地破碎化的丰富性，多样性，营业额，和丰富的繁殖鸟类群落在老，北方混合木材的森林创建孤立和连接的森林片段1，10，40，和100公顷。连接片段连接100米宽的河岸缓冲带。处理组和对照组内的每个大小类别重复三次。我们采样雀形目群落使用点计数之前，并在每两年后，森林采伐，累计21340记录代表59种。我们没有发现显着的变化，物种丰富度作为收获的结果，除了在1公顷的连接片段，其中物种的数量增加了两年后隔离。这一增长是由短暂的物种，这表明相邻的缓冲带被用作移动走廊。多样性（对数系列α指数）是依赖于面积的孤立的片段，只有切割后，在较小的地区减少。图尔...
We studied the effect of habitat fragmentation on the richness, diversity, turnover, and abundance of breeding bird communities in old, boreal mixed-wood forest by creating isolated and connected forest fragments of 1, 10, 40, and 100 ha. Connected fragments were linked by 100 m wide riparian buffer strips. Each size class within treatments and controls was replicated three times. We sampled the passerine community using point counts before, and in each of two years after, forest harvesting, accumulating 21340 records representing 59 species. We detected no significant change in species richness as a result of the harvesting, except in the 1-ha connected fragments, where the number of species increased two years after isolation. This increase was accounted for by transient species, suggesting that the adjacent buffer strips were being used as movement corridors. Diversity (log series alpha index) was dependent on area in the isolated fragments only after cutting, having decreased in the smaller areas. Tur...