The effects of climate change on the distribution of South American antbirds (Thamnophilus punctatus complex) as affected by niche divergences and contact zone interactions between species

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da Silva , E A , de Araujo , H F P , Aleixo , A , Antonelli , A & Fernandes , A M 2020 , ' The effects of climate change on the distribution of South American antbirds (Thamnophilus punctatus complex) as affected by niche divergences and contact zone interactions between species ' , Journal of Ornithology , vol. 161 , no. 1 , pp. 229-241 . https://doi.org/10.1007/s10336-019-01721-3

Title: The effects of climate change on the distribution of South American antbirds (Thamnophilus punctatus complex) as affected by niche divergences and contact zone interactions between species
Author: da Silva, Erasmo Andrade; de Araujo, Helder Farias Pereira; Aleixo, Alexandre; Antonelli, Alexandre; Fernandes, Alexandre M.
Contributor: University of Helsinki, Zoology
Date: 2020-01
Language: eng
Number of pages: 13
Belongs to series: Journal of Ornithology
ISSN: 2193-7192
URI: http://hdl.handle.net/10138/319643
Abstract: Several studies have shown that climatic change has been accelerating due to human activities, leading to dramatic effects on biodiversity. Modeling studies describe how species have reacted in the past to climatic change, and this information can help us to understand the degree of biotic susceptibility to current and future climatic change. This work aims to determine the effects of past, current and future climatic changes on the geographic distribution of the species complex Thamnophilus punctatus, a bird clade widely distributed across Neotropical dry forests. We also investigate if species that are phylogenetically similar have comparable climatic niches and, consequently, can be expected to respond similarly to climatic change. For this purpose, we calculated similarity, niche overlap, equivalence and genetic distance between all species, modeling their geographic distributions during the Last Glacial Maximum (LGM) as well as under current conditions and future (2050-2080) scenarios. Our results indicate that there are differences in responses to climatic changes from the LGM to the present among the five species of the T. punctatus complex and that the niches in the measured dimensions are not conserved among the studied species. We therefore suggest that the adequate environmental space of taxa of a widely distributed lineage can be shaped in distinct way, regardless of how closely related their species are or how much their niches overlap. Competitive exclusion in zones of contact is an important factor determining the geographical range of the species of the Thamnophilus punctatus complex, particularly for the very closely related species T. sticturus, T. pelzelni and T. ambiguus.
Subject: Birds
Climate change
Niche conservatism
South America
GENETIC DIVERSITY
CONSERVATISM
EVOLUTION
FOREST
BIRDS
STABILITY
SELECTION
PATTERNS
INSIGHTS
MODELS
1181 Ecology, evolutionary biology
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