Distribution and abundance of foliage-arthropods across elevational gradients in the east and west Himalayas
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Elevational gradients are ideal for studying geographic variation in the distribution and abundance of organisms corresponding to predictable variation in climatic factors. This study provides a broad-scale assessment of variation in distribution patterns of foliage-dwelling arthropod orders along elevational gradients located across an extensive precipitation gradient in the Himalayas. Relative abundances of foliage-dwelling arthropods were estimated from 16 sites during the summer months. Abundances declined significantly from east to west and peaked at intermediate elevations along elevational gradients, corresponding with trends in climatic variables.
KeywordsArthropod orders Bagging-method Climate Summer Vegetation
I wish to thank the Director, Dean of the Wildlife Institute of India (WII) and the Chief Wildlife Wardens of the respective states for providing permits to carry out the field sampling. D. Mohan and Pratap Singh are thanked for facilitating this work, and Rekha Warrier is thanked for assistance with field sampling. This work was supported by Grant-in-aid from WII. Trevor Price, G.S. Rawat and Abishek Harihar are thanked for providing comments on the manuscript. In particular, I wish to thank Roman J. Dial for his insightful suggestions on improving and interpreting the analyses that greatly enhanced the quality of the manuscript. I also thank the handling editor and an anonymous reviewer for helpful comments on earlier drafts.
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