| DOI | 10.1111/1365-2656.14079
|
| Body size mediates trophic interaction strength of novel fish assemblages under climate change |
| Sasaki, Minami; Kingsbury, Kelsey M.; Booth, David J.; Nagelkerken, Ivan
|
| 发表日期 | 2024
|
| ISSN | 0021-8790
|
| EISSN | 1365-2656
|
| 英文摘要 | Ecological similarity plays an important role in biotic interactions. Increased body size similarity of competing species, for example, increases the strength of their biotic interactions. Body sizes of many exothermic species are forecast to be altered under global warming, mediating shifts in existing trophic interactions among species, in particular for species with different thermal niches. Temperate rocky reefs along the southeast coast of Australia are located in a climate warming hotspot and now house a mixture of temperate native fish species and poleward range-extending tropical fishes (vagrants), creating novel species assemblages. Here, we studied the relationship between body size similarity and trophic overlap between individual temperate native and tropical vagrant fishes. Dietary niche overlap between vagrant and native fish species increased as their body sizes converged, based on both stomach content composition (short-term diet), stable isotope analyses (integrated long-term diet) and similarity in consumed prey sizes. We conclude that the warming-induced faster growth rates of tropical range-extending fish species at their cool water ranges will continue to converge their body size towards and strengthen their degree of trophic interactions and dietary overlap with co-occurring native temperate species under increasing ocean warming. The strengthening of these novel competitive interactions is likely to drive changes to temperate food web structures and reshuffle existing species community structures. We show how body size similarity between range-extending tropical and sympatric temperate fishes in a global hotspot of climate warming mediates their degree of diet similarity. Our results suggest a strengthening of these novel trophic interactions as warming is set to further reduce body size differences between these species.image |
| 英文关键词 | body size; competitive interactions; ecological niche; global warming; range shifts; stable isotopes; stomach content; trait similarity |
| 语种 | 英语
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| WOS研究方向 | Environmental Sciences & Ecology
; Zoology
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| WOS类目 | Ecology
; Zoology
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| WOS记录号 | WOS:001205726500001
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| 来源期刊 | JOURNAL OF ANIMAL ECOLOGY
(IF:4.364[JCR-2018],5.017[5-Year]) |
| 文献类型 | 期刊论文
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| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/302009
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| 作者单位 | University of Adelaide; University of Technology Sydney
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推荐引用方式
GB/T 7714 |
Sasaki, Minami,Kingsbury, Kelsey M.,Booth, David J.,et al. Body size mediates trophic interaction strength of novel fish assemblages under climate change[J],2024.
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| APA |
Sasaki, Minami,Kingsbury, Kelsey M.,Booth, David J.,&Nagelkerken, Ivan.(2024).Body size mediates trophic interaction strength of novel fish assemblages under climate change.JOURNAL OF ANIMAL ECOLOGY.
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| MLA |
Sasaki, Minami,et al."Body size mediates trophic interaction strength of novel fish assemblages under climate change".JOURNAL OF ANIMAL ECOLOGY (2024).
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