气候变化领域集成服务门户(CCPortal): Intertidal mussels as ecosystem engineers: maintenance of invertebrate assemblages amid intertidal stress gradients

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DOI	10.1111/oik.10304
	Intertidal mussels as ecosystem engineers: maintenance of invertebrate assemblages amid intertidal stress gradients
	Bogdanski, David; Marcos-Almansa, Lorena; Flores, Augusto A. V.
发表日期	2024
ISSN	0030-1299
EISSN	1600-0706
英文摘要	Species that form complex biogenic structures may increase niche space for many others and are assumed to be paramount for whole-assemblage stability and ecosystem functioning. Because they often ameliorate physical conditions, ecosystem engineering species are also predicted to become more important with environmental stress. Testing this hypothesis, however, has proven difficult because isolating facilitation effects along the entire stress gradient is challenging. Here we addressed motile invertebrate assemblages associated to the mid-intertidal chthamalid barnacle cover at four rocky shores, either with ('facilitated') or without ('control') a secondary natural cover of small mussels (Mytilaster solisianus and Brachidontes darwinianus). Following a factorial balanced design, replicate samples were taken at three tidal heights in all sites, encompassing a clear gradient of thermal stress and desiccation potential along the vertical range of the mussel-enriched zone. While observations on general abundance were mostly consistent with stress-independent facilitation, results for richness, diversity and assemblage structure indicated overarching stress-dependent responses. All these later three response variables steadily declined from the low to the high level in the control barnacle habitat but remained unaltered in the mussel-facilitated habitat. Increased facilitation higher on the shore is mostly due to retention of stress-vulnerable groups such as polychaetes, flatworms and large nematodes which virtually collapse in the higher control habitat, further indicating that mechanisms of mussel facilitation involve relief of environmental stress rather than protection from higher-order consumers. Our results suggest that mussel ecosystem engineering was fully preserved during the summer season when sampling took place. Ongoing research simulating heat waves compatible to climate-change scenarios will test whether mussel facilitation would hold over the coming decades.
英文关键词	ecological filtering; foundation species; mussel facilitation; rocky shore ecology; stress-gradient hypothesis; SW Atlantic
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001183731200001
来源期刊	OIKOS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303258
作者单位	Universidade de Sao Paulo
推荐引用方式 GB/T 7714	Bogdanski, David,Marcos-Almansa, Lorena,Flores, Augusto A. V.. Intertidal mussels as ecosystem engineers: maintenance of invertebrate assemblages amid intertidal stress gradients[J],2024.
APA	Bogdanski, David,Marcos-Almansa, Lorena,&Flores, Augusto A. V..(2024).Intertidal mussels as ecosystem engineers: maintenance of invertebrate assemblages amid intertidal stress gradients.OIKOS.
MLA	Bogdanski, David,et al."Intertidal mussels as ecosystem engineers: maintenance of invertebrate assemblages amid intertidal stress gradients".OIKOS (2024).