Aerial dispersal of invertebrates over a high-Arctic glacier foreland: Midtre Lovenbreen, Svalbard
Aerial dispersal of invertebrates over a high-Arctic glacier foreland: Midtre Lovenbreen, Svalbard
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DOI：
10.1007/s00300-003-0516-x
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发表时间：
2003-08-01
期刊：
影响因子：
1.7
通讯作者：
Webb, NR
中科院分区：
文献类型：
--
作者：
Coulson, SJ;Hodkinson, ID;Webb, NR
空中传播的无脊椎动物群落进行了研究，在7个站点沿着一个年表跨越冰前地区的退缩高北极冰川，中洛文布林，斯瓦尔巴群岛，挪威。无脊椎动物采样水和粘性陷阱在连续的夏天。大量的双翅目，膜翅目和蜘蛛被捕获的陷阱类型，这些群体都存在于所有网站，包括最年轻的和无植被的网站1。较低的粘性陷阱（小于或等于25厘米）捕获>95%的个体。物种数随立地年龄的增长而增加。然而，总渔获量往往在4号站点达到峰值，然后下降。蜘蛛目是例外，其中物种数量稳定的网站2，但总渔获量增加，从网站1至7。无脊椎动物迅速到达新暴露的陆地表面。一些气球蜘蛛被粘在上面的陷阱，但缺乏证据的风传播弹尾虫或螨。
Aerial dispersal of the invertebrate community was studied at seven sites along a chronosequence across the proglacial region of a retreating high-Arctic glacier, Midtre Lovenbreen, Svalbard, Norway. Invertebrates were sampled using water and sticky traps in successive summers. Large numbers of Diptera, Hymenoptera and Araneae were caught by both trap types and these groups were present at all sites, including the youngest and unvegetated site 1. Lower sticky traps (less than or equal to25 cm) caught >95% of individuals. Numbers of species tended to increase with site age. Total catch, however, often peaked at site 4 and then declined. Araneae were the exception, in which species number stabilised by site 2, but total catch increased from sites 1 to 7. Invertebrates rapidly reached newly exposed land surfaces. A few ballooning spiders were caught on upper sticky traps but evidence of wind dispersal by Collembola or mites was lacking.