Tree species and elevation influence the assemblage composition of saproxylic beetles in subtropical forest of east China
Tree species and elevation influence the assemblage composition of saproxylic beetles in subtropical forest of east China
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树种和海拔对华东亚热带森林腐木甲虫群落组成的影响
DOI：
10.1016/j.foreco.2012.12.004
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发表时间：
2013-03
影响因子：
3.7
通讯作者：
Xiaoling Niu
中科院分区：
文献类型：
--
作者：
Jie Wu;Hui Pan;Shuzhen Yang;Xiaoling Niu
在现代森林管理中，对阔叶林昆虫及其栖息地的保护日益受到关注。为了优化保护策略，应充分考虑到昆虫对底物的需求。然而，有关知识仍然是相当贫穷的亚热带森林。在这项研究中，我们测试了寄主树种，海拔，树干直径和冠层覆盖度的影响，在中国东部的亚热带森林中的黄脂大小蠹组合的组成。在两种不同海拔范围的森林类型（低海拔林，LEF：400- 850 m;高海拔林，HEF：950- 1200 m）中，调查了与不同树种残枝相关的蜡蚧群落。2010年5月至10月，在11个树种的87个障碍物上，使用飞行拦截诱捕器，在6个时期内共收集到21，546只属于510种的松鼠甲虫。结果表明，大多数树种间甲虫物种丰富度差异不显著。冠层覆盖度对甲虫物种丰富度有显著的负向影响。相对而言，海拔和桩径对物种丰富度的影响不显著。典范对应分析表明，与不同的树木，在HEF比在LEF更相似的辛酸组合。即使当属于同一树种的障碍物进行了检查，甲虫组合物之间的LEF和HEF明显不同。海拔是影响群落组成的最重要的变量。相对而言，树种对落叶层中黄胸小蠹群落的影响更为显著。此外，有一个显着的线性增加的比例，从每个障碍收集的通才物种与海拔。更多的甲虫种类更喜欢生活在LEF的倾向于开发一个狭窄的主机使用范围比那些生活在HEF。总之，我们的研究结果表明，在亚热带森林的阳光照射栖息地补丁的可用性是很重要的，以保持saperylytic甲虫多样性。增加树种多样性是重要的，以增加在管理和种植园林的中国亚热带森林，并出现在低海拔森林中，特别是重要的saperylytic甲虫多样性。
The conservation of saproxylic insects and their habitats has caused growing concerns in modern forest management. In order to optimize the conservation strategies, substrate requirements of saproxylic insects should be fully addressed. However, relevant knowledge is still rather poor in subtropical forests. In this study, we tested the effects of host tree species, elevation, snag diameter and canopy cover on the composition of saproxylic beetle assemblages in a subtropical forest of east China. Saproxylic beetle assemblages associated with snags of different tree species were surveyed in two forest types each with different elevation range (low elevation forest, LEF: 400–850m; high elevation forest, HEF: 950–1200m). A total of 21,546 individuals belonging to 510 saproxylic beetle species were collected from 87 snags (11 tree species) using flight intercept traps in six periods from May to October 2010. Results indicated that beetle species richness was not significantly different between most sampled tree species. Canopy cover had significant and negative effects on species richness of saproxylic beetles. Comparatively, elevation and snag diameter showed no significant effects on species richness. Canonical correspondence analysis suggested saproxylic assemblages associated with different trees were more similar to each other in HEF than in LEF. Even when snags belonging to the same tree species were examined, beetle assemblage compositions were clearly different between LEF and HEF. Elevation was the most important variable affecting assemblage composition. Relatively, the effect of tree species on assemblage of saproxylic beetles was more pronounced in LEF. Furthermore, there was a significant linear increase in proportions of generalist species collected from each snag with elevation. More beetle species preferring to live in LEF were prone to develop a narrower host use range than those living in HEF. To conclude, our results demonstrate that the availability of sun-exposed habitat patches in subtropical forests is important to maintain saproxylic beetle diversity. Increasing tree-species diversity is important to increase saproxylic beetle diversity in managed and plantation forests of subtropical China, and appears to be particularly important in low elevation forests.
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DOI：
10.1007/bf02856596
发表时间：
1997-10
期刊：
The Botanical Review
影响因子：
--
作者：
G. Tavakilian;A. Berkov;B. Meurer-Grimes;S. Mori
通讯作者：
G. Tavakilian;A. Berkov;B. Meurer-Grimes;S. Mori
DOI：
10.1007/0-306-48380-7_3639
发表时间：
2008
期刊：
--
影响因子：
--
作者：
通讯作者：
--
DOI：
--
发表时间：
2001
期刊：
--
影响因子：
--
作者：
J. Siitonen
通讯作者：
J. Siitonen
影响因子：
6.4
作者：
Lomolino, MV
通讯作者：
Lomolino, MV
影响因子：
1.9
作者：
G. Rotheray;G. Hancock;S. Hewitt;D. Horsfield;I. Macgowan;D. M. Robertson;K. Watt
通讯作者：
G. Rotheray;G. Hancock;S. Hewitt;D. Horsfield;I. Macgowan;D. M. Robertson;K. Watt