Multiyear drought exacerbates long-term effects of climate on an invasive ant species.

ABSTRACT: Invasive species threaten biodiversity, ecosystem function, and human health, but the long-term drivers of invasion dynamics remain poorly understood. We use data from a 28-yr ongoing survey of a Northern California ant community invaded by the Argentine ant (Linepithema humile) to investigate the influence of abiotic and biotic factors on invasion dynamics. We found that the distribution of L. humile retracted following an extreme drought that occurred in the region from 2012 to 2015. The distribution of several native ant species also contracted, but overall native ant diversity was higher after the drought and for some native ant species, distributions expanded over the 28-yr survey period. Using structural equation models, we found the strongest impact on the distribution of L. humile

SUBMITTER: Couper LI 

PROVIDER: S-EPMC9285587 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature