气候变化领域集成服务门户(CCPortal): Body size mediates trophic interaction strength of novel fish assemblages under climate change

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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
WOS研究方向	Environmental Sciences & Ecology ; Zoology
WOS类目	Ecology ; Zoology
WOS记录号	WOS:001205726500001
来源期刊	JOURNAL OF ANIMAL ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302009
作者单位	University of Adelaide; University of Technology Sydney
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.
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.
MLA	Sasaki, Minami,et al."Body size mediates trophic interaction strength of novel fish assemblages under climate change".JOURNAL OF ANIMAL ECOLOGY (2024).