LONG-TERM IMPACTS OF AN ARTHROPOD-COMMUNITY INVASION BY THE IMPORTED FIRE ANT, SOLENOPSIS INVICTA
LONG-TERM IMPACTS OF AN ARTHROPOD-COMMUNITY INVASION BY THE IMPORTED FIRE ANT, SOLENOPSIS INVICTA
复制标题
进口红火蚁对节肢动物群落的长期影响
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
L. Morrison
中科院分区：
文献类型：
--
作者：
L. Morrison
入侵蚂蚁物种对许多生态群落的完整性构成严重威胁，通常会导致本地蚂蚁和其他节肢动物的丰度和物种丰富度下降。这类最深入和最著名的研究之一记录了20世纪80年代末入侵期间，进口红火蚁对美国德克萨斯州中部生物保护区的本地蚂蚁和节肢动物群的严重影响。1999年，也就是12年后，我用同样的方法再次对这个社区进行了抽样调查，以比较这次入侵的短期和长期影响。陷阱陷阱和诱饵被用来获得蚂蚁和节肢动物群落的定量措施，和手收集另外采用，以确定整体蚂蚁物种组成。尽管在S. invicta入侵，所有措施的本地蚂蚁和节肢动物物种多样性已恢复到入侵前的水平后，12年。红火蚁仍然是数量最多的蚂蚁物种，但数量远不及入侵初期。这项研究的结果表明，这种入侵蚂蚁的影响可能是最大的期间和入侵的初始阶段后不久。
Invasive ant species represent a serious threat to the integrity of many ecological communities, often causing decreases in the abundance and species richness of both native ants and other arthropods. One of the most in-depth and well-known studies of this type documented a severe impact of the imported red fire ant, Solenopsis invicta, on the native ant and arthropod fauna of a biological field reserve in central Texas (USA) during the initial invasion in the late 1980s. I sampled the community again in 1999, 12 years later, utilizing the same methodology, to compare the short- and long-term impacts of this invasion. Pitfall traps and baits were used to obtain quantitative measures of the ant and arthropod community, and hand collecting was additionally employed to determine the overall ant species composition. Although the abundance and species richness of native ants and several other arthropod groups decreased precipitously immediately after the S. invicta invasion, all measures of native ant and arthropod species diversity had returned to preinvasion levels after 12 years. Solenopsis invicta was still the most abundant ant species, but not nearly as abundant as it was during the initial phase of the invasion. The results of this study indicate that the impact of such invasive ants may be greatest during and shortly after the initial phase of an invasion.