Ecological generalism and physiology mediate fish biogeographic ranges under ocean warming
Hayes, Chloe, Mitchell, Angus, Mellin, Camille, Booth, David J., Ravasi, Timothy, and Nagelkerken, Ivan (2024) Ecological generalism and physiology mediate fish biogeographic ranges under ocean warming. Proceedings of the Royal Society of London Series B, Biological Sciences, 291 (2015). 20232206.
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Abstract
Climate-driven species redistributions are facilitated by niche modifications that increase a species’s chances of establishment in novel communities. It is well understood how range-extending species adjust individual niche traits when entering novel environments, yet whether modification of ecological niche traits collectively alters the pace of range extensions or contractions remains unknown. We quantified habitat niche, abundance, physiological performance and cellular defence/damage of range-extending coral reef fishes and coexisting local temperate fishes along a 2000 km latitudinal gradient. We also assessed their dietary and behavioural niches, and establishment potential, to understand whether ecological generalism facilitates successful range extension of coral reef fishes. The coral reef fish that increased all ecological niches, showed stronger establishment, increased physiological performance and cellular damage, but decreased cellular defence at their cold-range edge, whereas tropical species that showed unmodified ecological niches showed lower establishment. One temperate species showed decreased abundance, habitat niche width and body condition, but increased cellular defence, cellular damage and energy reserves at their warm-trailing range, while other temperate species showed contrasting responses. Therefore, ecological generalists might be more successful than ecological specialists during the initial stages of climate change, with increasing future warming strengthening this pattern by physiologically benefitting tropical generalists but disadvantaging temperate specialists.
| Item ID: | 82027 |
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| Item Type: | Article (Research - C1) |
| ISSN: | 1471-2954 |
| Keywords: | climate change, coral reef fish, ecological niche, physiology, range extending, tropicalization |
| Copyright Information: | © 2024 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
| Funders: | Australian Research Council (ARC) |
| Projects and Grants: | ARC DP170101722, ARC DP230101932, ARC FT200100870 |
| Date Deposited: | 21 Mar 2024 02:47 |
| FoR Codes: | 41 ENVIRONMENTAL SCIENCES > 4101 Climate change impacts and adaptation > 410102 Ecological impacts of climate change and ecological adaptation @ 100% |
| SEO Codes: | 18 ENVIRONMENTAL MANAGEMENT > 1802 Coastal and estuarine systems and management > 180299 Coastal and estuarine systems and management not elsewhere classified @ 100% |
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