Show simple item record Freeman, Benjamin Tobias, Joseph Schluter, D. 2019-07-11T19:39:36Z 2019-07-11T19:39:36Z 2019-07-11
dc.identifier doi:10.5061/dryad.s786348
dc.identifier.citation Freeman BG, Tobias JA, Schluter D (2019) Behavior influences range limits and patterns of coexistence across an elevational gradient in tropical birds. Ecography, online in advance of print.
dc.description Does competition influence patterns of coexistence between closely related taxa? Here we address this question by analyzing patterns of range overlap between related species of birds (“sister pairs”) co-occurring on a tropical elevational gradient. We explicitly contrast the behavioral dimension of interspecific competition (interference competition) with similarity in resource acquisition traits (exploitative competition). Specifically, we ask whether elevational range overlap in 118 sister pairs that live along the Manu Transect in southeastern Peru is predicted by proxies for competition (intraspecific territorial behavior) or niche divergence (beak divergence and divergence times, an estimate of evolutionary age). We find that close relatives that defend year-round territories tend to live in non-overlapping elevational distributions, while close relatives that do not defend territories tend to broadly overlap in elevational distribution. In contrast, neither beak divergence nor evolutionary age was associated with patterns of range limitation. We interpret these findings as evidence that behavioral interactions⎯particularly direct territorial aggression⎯can be important in setting elevational range limits and preventing coexistence of closely related species, though this depends upon the extent to which intraspecific territorial behavior can be extended to territorial interactions between species. Our results suggest that interference competition can be an important driver of species range limits in diverse assemblages, and thus highlight the importance of considering behavioral dimensions of the niche in macroecological studies.
dc.relation.haspart doi:10.5061/dryad.s786348/1
dc.relation.haspart doi:10.5061/dryad.s786348/2
dc.relation.isreferencedby doi:10.1111/ecog.04606
dc.subject competition
dc.subject elevational gradient
dc.subject exploitative competition
dc.subject interference competition
dc.subject limiting similarity
dc.subject range limits
dc.title Data from: Behavior influences range limits and patterns of coexistence across an elevational gradient in tropical birds
dc.type Article *
dc.contributor.correspondingAuthor Freeman, Benjamin
prism.publicationName Ecography

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Title DatasetA
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Description Dataset A: Species list for the Manu region from Walker et al. (2006), with notes on the species included in this analysis and the source of the molecular phylogeny used to define sister pairs for different groups.
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Title DatasetB
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Description Dataset B: Dataset used in analysis, including information on elevational overlap, genetic distance, beak divergence and territoriality for each sister pair.
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