The impact of predation on the structuring of Arctic intertidal soft-bottom communities


Predation is a key modifier of community dynamics, but information on its magnitude in community regulation in systematically understudied Arctic coastal habitats is sparse. To test the magnitude and direction of predation effects on the diversity and structure of Arctic benthic communities, we conducted caging experiments in which consumers were excluded from plots at two intertidal sedimentary sites in Svalbard (Longyearbyen and Thiisbukta) for 2.5 months. At the end of the experiment, we took a sediment core from each plot and quantified the total biomass and, separately for each taxon encountered, the number of individuals. At both sites, the exclusion of predators changed the species composition of the communities, but had negligible effects on biomass, total abundance, species richness, evenness and Shannon index. In addition, we found spatial variability and artifact effects at both sites on several response variables.

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Metadata Access
Creator Diaz Aguirre, María José; Molis, Markus; Buschbaum, Christian ORCID logo
Publisher PANGAEA
Publication Year 2022
Funding Reference Ministry of education, Chile Crossref Funder ID 1190529 FONDECYT; Ministry of education, Chile Crossref Funder ID 15150003 FONDAP; Ministry of education, Chile Crossref Funder ID 2015-72160110 Programa de Becas de Doctorado CHILE
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 3 datasets
Discipline Earth System Research
Spatial Coverage (11.903W, 78.224S, 15.670E, 78.928N)
Temporal Coverage Begin 2017-06-01T00:00:00Z
Temporal Coverage End 2022-08-08T00:00:00Z