A comparison on the impacts of short-term micro-environmental and long-term macro-climatic variability on structuring beta diversity of microarthropod communities

다국어 초록 (Multilingual Abstract)

It is unknown whether long-term climatic variability or short-term microhabitat environmental fluctuationwould be the key mechanism in determining the microarthropod compositional variation. In the present briefreport, by utilizing microarthropod communities as the study model, I aimed to test the relative importanceof macro-climatic versus micro-environmental variability on structuring the beta diversity patterns ofmicroarthropod communities. The random sampling effect in quantifying beta diversity has been controlledusing a null model. Variation partitioning technique is employed to test the relative importance of both mechanisms.
The results showed that microarthropod beta diversity pattern is exclusively influenced by microenvironmentalcondition, especially for oribatids and collembolans. The influence of macro-climatic variabilityon structuring microarthropod community structure is exactly zero as indicated by variation partitioning analyses.
Correspondingly, the interaction between micro-environment and macro-climate plays no roles on structuringmicroarthropod beta diversity too. Conclusively, microhabitat condition, but not regional climate, is the driverof microarthropod diversity patterns in SW Canada.

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