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Divergent temporal dynamics of native and non-native insular arthropods in fragmented forests
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Orientador(es)
Resumo(s)
Non-native species introductions have caused biodiversity loss worldwide, yetit is unclear how temporal diversity patterns vary across native and non-nativecommunities, and what mechanisms control their respective dynamics andassembly. Using a unique 12-year time series dataset of arthropods sampled inforest fragments on Terceira Island, we observed no systematic species lossesbut steady temporal β-diversity (Sørensen dissimilarity based on speciespresence–absence) for non-native, native endemic, and native non-endemicassemblages. However, native endemics and non-endemics showed an overallincreasing trend in Bray–Curtis dissimilarity (incorporating speciesabundances), with many previously abundant native species becomingprogressively rarer. By constructing neutral models, we accurately predictedtemporal diversity patterns for non-natives but not for native endemics andnon-endemics, displaying their divergent temporal dynamics. These resultsindicate that non-native assemblages are more consistent with stochasticsource-sink mass effect dynamics, while neutral drift interacting withnon-natives and/or environmental changes might drive native assemblagedynamics.
Descrição
Palavras-chave
insular arthropods native endemics and non-endemics neutral model non-nativeintroduction species abundance distribution temporal β-diversity
Contexto Educativo
Citação
Zhang, Y., Borges, P. A. V., Lhoumeau, S., Matthews, T., & Liao, J. (2026). Divergent temporal dynamics of native and non-native insular arthropods in fragmented forests. Ecology, 107, 4, e70363
Editora
Wiley