Importance of the understory stratum to entomofaunal diversity in a temperate deciduous forest
Importance of the understory stratum to entomofaunal diversity in a temperate deciduous forest
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DOI：
10.1007/s11284-008-0502-4
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发表时间：
2009-03-01
影响因子：
2
通讯作者：
Kashizaki, Akira
中科院分区：
文献类型：
--
作者：
Hirao, Toshihide;Murakami, Masashi;Kashizaki, Akira
对日本寒温带落叶林中鳞翅目和鞘翅目群落的垂直分层进行了研究，以评价温带森林林冠和林下流动昆虫均匀分布的假设。在2001年4月至10月期间，每个月连续3个晚上在林冠和林下的3个地点采用灯诱法捕获鳞翅目和鞘翅目昆虫。鳞翅目的物种丰富度、丰度和科丰富度在林下均显著高于林冠。对于鞘翅目，只有冠层的丰度大于林下；不同地层间物种和科的丰富度没有差异。鳞翅目群落的β多样性在各层间大于样地间，而鞘翅目群落的β多样性则相反。这些结果暗示在温带森林中鳞翅目群落中存在垂直分层，而在鞘翅目群落中不存在垂直分层。在温带森林中，林下比林冠对鳞翅目物种多样性的贡献更大，尽管这种分层可能相对较弱，因为与热带森林的情况相比，林下和林下组合共享许多物种。
The vertical stratification of lepidopteran and coleopteran communities in a cool-temperate deciduous forest in Japan was examined to evaluate the hypothesis of an expected uniform distribution of mobile flying insects between the canopy and understory of temperate forests. Lepidopteran and coleopteran insects were trapped using light traps at three sites in each of the canopy and understory for three consecutive nights each month from April to October 2001. For Lepidoptera, species richness, abundance, and family richness were significantly higher in the understory than in the canopy. For Coleoptera, only abundance was larger in the canopy relative to the understory; species and family richness did not differ between the strata. The beta diversity of the lepidopteran community was larger between the strata than among sites, but the coleopteran community showed an inverse pattern. These results imply the presence of vertical stratification within the lepidopteran community, but not within the coleopteran community, in the temperate forest. The understory contributes more than the canopy to lepidopteran diversity in the temperate forest, although this stratification may be relatively weak because, in contrast to the situation in tropical forests, the canopy and understory assemblages share many species.