Spatial variation in the timing of the seasonal occurrence in coprophagous beetles.
Spatial variation in the timing of the seasonal occurrence in coprophagous beetles.
复制标题
食粪甲虫季节性发生时间的空间变化。
DOI：
10.2307/3544290
复制
发表时间：
1980
期刊：
影响因子：
--
通讯作者：
I. Hanski
中科院分区：
文献类型：
--
作者：
I. Hanski
季节性变化的个人在两组粪便栖息的甲虫，Aphodius（金龟子科）和Hydroplilidae的数量，被证明有很大的不同，类似的牧场之间位于约。1.5相隔千米。这是建议有关的季节性恒定的数量和质量的栖息地和资源（粪便），在没有这种约束，其他因素，如机会，历史，种间的相互作用，可能成为决定性的决定因素的时空结构的人口。在同一个领域的最相似的物种的季节平均重叠（百分比相似性），和种内的平均场间重叠，都是约。50%，这表明在生态位关系研究中检查空间变异的重要性。一些种类的Aphodius的数量呈双峰型季节分布，这可能反映了种内的变化在冬眠阶段。空间变异的数量和季节性发生的时间之间的关系进行了讨论。由此得出结论，由于物种组成的空间变异，种内多样性在季节发生的不同
Seasonal changes in the numbers of individuals in two groups of dung-inhabiting beetles, Aphodius (Scarabaeidae) and Hydroplilidae, are shown to vary substantially between similar pastures situated ca. 1.5 km apart. This is suggested to be related to seasonally constant quantity and quality of their habitat and resources (droppings); in the absence of this constraint, other factors, like chance, history, and interspecific interactions, may become decisive determinants of the spatio-temporal structure of populations. The seasonal mean overlap (percentage similarity) with the most similar species in the same field, and the mean intraspecific between-field overlap, were both ca. 50%, which shows the importance of examining spatial variation in studies of niche relations. Some species of Aphodius showed bimodal seasonal distribution in numbers, which is interpreted to reflect intraspecific variation in the stage of hibernation. The relation between spatial variance in numbers and in the timing of the seasonal occurrence is discussed. It is concluded that, due to spatial variation in the species composition, intraspecific diversity in the seasonal occurrence of different