Spatio-temporal species aggregations do not rule out interspecific competition in tree hollow spider assemblages Las agregaciones espaciotemporales entre especies no descartan la competencia interespecífica en los ensambles de arañas de las oquedades arbóreas

IF 2 3区 农林科学 Q2 ENTOMOLOGY
Gerard Martínez-Devesa, Jesús Hernández-Corral, Estefanía Micó
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Abstract

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树洞蜘蛛群的时空物种聚集并不排除种间竞争 树洞蜘蛛群的时空物种聚集并不排除种间竞争 树洞蜘蛛群的时空物种聚集并不排除种间竞争 树洞蜘蛛群的时空物种聚集并不排除种间竞争
群落的生物多样性反映了物种之间的共存。在某种程度上,这往往取决于是否存在资源竞争以及如何处理这种竞争。老树洞的性质是有限的和相对孤立的,这使得它们非常适合研究它们的居民之间的竞争现象,比如Araneae。利用零模型在群落和两两水平上的空间共现模式分析,推断地中海森林树空心蜘蛛群落结构中存在种间竞争。分析对象为36种蜘蛛,每月采集1年。讨论了四种生态性状、体型和物候在格局类型上的分布。结果表明,在群落水平上以空间分离为主,在两两水平上以不同性状物种间的空间聚集为主。狩猎策略和体型是促进这些聚集的主要差异特征。此外,在主要活动时期,也只有以东凤眼阿玛氏(Amaurobius scopolihaeus scuculatus)为首的群落和以白斑阿玛氏(Eratigena atrica liocranum majus)为首的群落出现重叠。不同特征树种的群落分离和时空聚集表明,种间竞争很可能是树空心蜘蛛群落的一个结构因素。相反,成对水平上的分离似乎是由其他因素造成的,例如,栖息地偏好。
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来源期刊
Ecological Entomology
Ecological Entomology 生物-昆虫学
CiteScore
4.90
自引率
4.50%
发文量
94
审稿时长
3 months
期刊介绍: Ecological Entomology publishes top-quality original research on the ecology of insects and related invertebrate taxa. Our aim is to publish papers that will be of considerable interest to the wide community of ecologists who are motivated by ecological or evolutionary theory. The suitability of a manuscript will usually be assessed within 5 days. We publish full-length Original Articles as well as Reviews, Short Communications, Methods and Natural History papers. In Original Articles, we greatly prefer papers that test specific hypotheses and which have a high degree of novelty. All categories aim for innovative contributions that advance the subject of ecological entomology.
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