ArticleFrontiers in insect science2026
Spatial coexistence of invasive ants in fragmented urban habitats of their native range.
Article in Frontiers in insect science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Urban landscapes are increasingly recognized as key arenas for biological invasions, yet the mechanisms enabling the local coexistence of multiple highly invasive species remain poorly understood. Urban habitat fragmentation generates mosaics of habitat patches that differ in size, isolation, and microhabitat complexity, shaping ant community structure and competitive interactions. Methods: Here, we investigated ant assemblages across a mosaic of urban habitat patches within a university campus in Buenos Aires, Argentina, focusing on four globally invasive ant species ( Results: Ant assemblages differed significantly among habitat patches, with marked spatial variation in richness, diversity, and species composition. Contrary to expectations of rigid dominance hierarchies, no single species consistently dominated across patches. Discussion/Conclusion: Overall, our results support a metacommunity perspective in which invasive ant coexistence in urban systems is mediated by context-dependent competitive interactions rather than fixed dominance hierarchies. By emphasizing the role of fine-scale spatial structure, this study provides a nuanced, system-specific contribution to understanding invasive ant dynamics in urban environments.
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