Forest modification affects diversity (but not dynamics) of speciose tropical pyraloid moth communities
Forest modification affects diversity (but not dynamics) of speciose tropical pyraloid moth communities
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DOI：
10.1111/j.1744-7429.2004.tb00355.x
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发表时间：
2004-12-01
期刊：
影响因子：
2.1
通讯作者：
Schulze, CH
中科院分区：
文献类型：
--
作者：
Fiedler, K;Schulze, CH
我们研究了时间和空间动态的极其不同的蛾合奏（鳞翅目：Pyraloidea）沿着梯度的森林干扰，从未受干扰的原始热带雨林，不同种类的修改森林和开放耕地的边缘，神山国家公园（沙巴，东马来西亚）。我们在两个时期（1997年3月至5月和8月至9月）采用灯光诱捕法对蛾类进行了采样。我们收集了7724个人，代表680种在78个光陷阱的夜晚在6个研究地点。物种多样性（Fisher's alpha）未受干扰的原始林的群落组成明显高于受干扰的次生林和原始林。未受干扰的原始森林吸引了更多的螟蛾。从干扰的原始或古老的次生林的样品在物种组成方面的未受干扰的原始森林合奏统计上没有区别。因此，pyraloid合奏从干扰的森林与高大的树木仍然出现代表贫困的子集的未受干扰的原始森林群落。受干扰较严重的地点有一个独特的动物群，并表现出较强的动物群之间的分化。四种属Eoophyla，其中水生幼虫饲料藻类在快速运行的溪流受益显着的森林干扰。整个扰动梯度的时间变化是显着一致的合奏。最常见的物种的相对丰度变化是相同的，在所有的网站。总体而言，pyraloid蛾响应更敏感的人为栖息地的改变比大多数其他蛾类群迄今在热带地区的研究，并允许在高时间分辨率的多样性模式的分析。
We studied temporal and spatial dynamics of extremely diverse moth ensembles (Lepidoptera: Pyraloidea) along a gradient of forest disturbance ranging from undisturbed primary tropical rain forest to different kinds of modified forest and open cultivated land at the margin of Mount Kinabalu National Park (Sabah, East Malaysia). We sampled moths by light trapping during two periods (March-May and August-September 1997). We collected a total of 7724 individuals representing 680 species during 78 light-trapping nights at six study sites. Species diversity (Fisher's alpha.) of ensembles in undisturbed primary forest was distinctly higher than in disturbed or secondary forest. More pyraloid moths were attracted in undisturbed primary forest. Samples from disturbed primary or old-growth secondary forest were statistically indistinguishable from the undisturbed primary forest ensemble in regard to species composition. Thus, pyraloid ensembles from disturbed forest with tall trees remaining appeared to represent impoverished subsets of the undisturbed primary forest community. The more heavily disturbed sites had a distinct fauna and showed a stronger faunal differentiation among each other. Four species of the genus Eoophyla, in which aquatic larvae feed on algae in fast-running streams benefited prominently from forest disturbance. Temporal variation of ensembles was remarkably concordant across the disturbance gradient. Relative abundance variation of the commonest species was identical at all sites. Overall, pyraloid moths responded more sensitively to anthropogenic habitat alteration than most other moth taxa studied thus far in tropical regions and allowed for an analysis of diversity patterns at a high temporal resolution.