Dominance-diversity relationships in ant communities differ with invasion

Global Change Biology
Xavier ArnanJ Retana

Abstract

The relationship between levels of dominance and species richness is highly contentious, especially in ant communities. The dominance-impoverishment rule states that high levels of dominance only occur in species-poor communities, but there appear to be many cases of high levels of dominance in highly diverse communities. The extent to which dominant species limit local richness through competitive exclusion remains unclear, but such exclusion appears more apparent for non-native rather than native dominant species. Here we perform the first global analysis of the relationship between behavioral dominance and species richness. We used data from 1,293 local assemblages of ground-dwelling ants distributed across five continents to document the generality of the dominance-impoverishment rule, and to identify the biotic and abiotic conditions under which it does and does not apply. We found that the behavioral dominance-diversity relationship varies greatly, and depends on whether dominant species are native or non-native, whether dominance is considered as occurrence or relative abundance, and on variation in mean annual temperature. There were declines in diversity with increasing dominance in invaded communities, but diversity i...Continue Reading

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Citations

Sep 29, 2019·The Journal of Animal Ecology·Carl J SkarbekMichael Staab
Dec 4, 2020·Environmental Entomology·Anna F ProbertMargaret C Stanley
Feb 10, 2021·Scientific Reports·Xavier ArnanJavier Retana
Aug 19, 2021·Environmental Science and Pollution Research International·Junaid Ali SiddiquiYijuan Xu

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