Imperial College London

DrJosephTobias

Faculty of Natural SciencesDepartment of Life Sciences (Silwood Park)

Reader in Biodiversity and Ecosystems
 
 
 
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Contact

 

+44 (0)20 7594 1059j.tobias

 
 
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Location

 

KennedySilwood Park

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Summary

 

Publications

Citation

BibTex format

@article{Jones:2019:10.1111/ibi.12793,
author = {Jones, SEI and Tobias, JA and Freeman, R and Portugal, SJ},
doi = {10.1111/ibi.12793},
journal = {Ibis},
title = {Weak asymmetric interspecific aggression and divergent habitat preferences at an elevational contact zone between tropical songbirds},
url = {http://dx.doi.org/10.1111/ibi.12793},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Closely related tropical bird species often occupy mutually exclusive elevational ranges, but the mechanisms generating and maintaining this pattern remain poorly understood. One hypothesis is that replacement species are segregated by interference competition (e.g. territorial aggression), but the extent to which competition combines with other key factors such as specialization to distinct habitats remains little studied. Using vegetation surveys and reciprocal playback experiments, we explored the dynamics of interspecific aggression between two NightingaleThrushes Catharus sp. in Central America. We show that lowerelevation Blackheaded NightingaleThrushes Catharus mexicanus are aggressive towards higherelevation Ruddycapped NightingaleThrushes Catharus frantzii where they meet at contact zones. However, interspecific aggressive responses were weak and unidirectional, and the two species were associated with different habitats. We conclude that the contact zone is maintained and located primarily by habitat selection, and is probably reinforced by interspecific aggression. This has important implications for understanding how montane species will respond to climate change because the pace and extent of range shifts will not depend solely on habitat shifts or interspecific competition, but instead on interactions between these two factors.
AU - Jones,SEI
AU - Tobias,JA
AU - Freeman,R
AU - Portugal,SJ
DO - 10.1111/ibi.12793
PY - 2019///
SN - 0019-1019
TI - Weak asymmetric interspecific aggression and divergent habitat preferences at an elevational contact zone between tropical songbirds
T2 - Ibis
UR - http://dx.doi.org/10.1111/ibi.12793
UR - https://onlinelibrary.wiley.com/doi/full/10.1111/ibi.12793
UR - http://hdl.handle.net/10044/1/75618
ER -