Role of food web interactions in promoting resilience to nutrient enrichment in a brackish water eelgrass (Zostera marina ) ecosystem

Show simple item record Gagnon, Karine Gustafsson, Camilla Salo, Tiina de Rossi, Francesca Gunell, Sonja Richardson, J. Paul Reynolds, Pamela L. Duffy, J. Emmett Boström, Christoffer 2021-08-19T13:41:01Z 2021-08-19T13:41:01Z 2021-07
dc.identifier.citation Gagnon , K , Gustafsson , C , Salo , T , de Rossi , F , Gunell , S , Richardson , J P , Reynolds , P L , Duffy , J E & Boström , C 2021 , ' Role of food web interactions in promoting resilience to nutrient enrichment in a brackish water eelgrass (Zostera marina ) ecosystem ' , Limnology and Oceanography , vol. 66 , no. 7 , pp. 2810-2826 .
dc.identifier.other PURE: 164050637
dc.identifier.other PURE UUID: 25ee9139-d14c-4aa4-b2f0-683e0046a9e3
dc.identifier.other WOS: 000654272100001
dc.identifier.other ORCID: /0000-0001-7308-3802/work/98709429
dc.description.abstract Understanding the ecological interactions that enhance the resilience of threatened ecosystems is essential in assuring their conservation and restoration. Top-down trophic interactions can increase resilience to bottom-up nutrient enrichment, however, as many seagrass ecosystems are threatened by both eutrophication and trophic modifications, understanding how these processes interact is important. Using a combination of approaches, we explored how bottom-up and top-down processes, acting individually or in conjunction, can affect eelgrass meadows and associated communities in the northern Baltic Sea. Field surveys along with fish diet and stable isotope analyses revealed that the eelgrass trophic network included two main top predatory fish species, each of which feeds on a separate group of invertebrate mesograzers (crustaceans or gastropods). Mesograzer abundance in the study area was high, and capable of mitigating the effects of increased algal biomass that resulted from experimental nutrient enrichment in the field. When crustacean mesograzers were experimentally excluded, gastropod mesograzers were able to compensate and limit the effects of nutrient enrichment on eelgrass biomass and growth. Our results suggest that top-down processes (i.e., suppression of algae by different mesograzer groups) may ensure eelgrass resilience to nutrient enrichment in the northern Baltic Sea, and the existence of multiple trophic pathways can provide additional resilience in the face of trophic modifications. However, the future resilience of these meadows is likely threatened by additional local stressors and global environmental change. Understanding the trophic links and interactions that ensure resilience is essential for managing and conserving these important ecosystems and the services they provide. en
dc.format.extent 17
dc.language.iso eng
dc.relation.ispartof Limnology and Oceanography
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject CARBON
dc.subject COASTAL FISH
dc.subject DELTA-C-13
dc.subject DIVERSITY
dc.subject NITROGEN
dc.subject 1181 Ecology, evolutionary biology
dc.title Role of food web interactions in promoting resilience to nutrient enrichment in a brackish water eelgrass (Zostera marina ) ecosystem en
dc.type Article
dc.contributor.organization Biological stations
dc.contributor.organization Ecosystems and Environment Research Programme
dc.contributor.organization Tvärminne Zoological Station
dc.contributor.organization Marine Ecosystems Research Group
dc.contributor.organization Tvärminne Benthic Ecology Team
dc.description.reviewstatus Peer reviewed
dc.relation.issn 0024-3590
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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