{"refrec":{"BRefID":365411,"RR":"<b>Cronau, R.J.T.; Telgenkamp, Y.; de Fouw, J; van Katwijk, M.M.; Bouma, T.; Heusinkveld, J.H.T.; Hoeijmakers, D.; van der Heide, T.; Lamers, L.P.M.</b> (2023). Seagrass is protected from ragworm pressure by a newly discovered grazer–ragworm interaction; implications for restoration. <i>J. Appl. Ecol. 60(6)</i>: 978-989. <a href=\"https://dx.doi.org/10.1111/1365-2664.14381\" target=\"_blank\">https://dx.doi.org/10.1111/1365-2664.14381</a>","BEntID":363132,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Appl. Ecol. 60(6)</i>: 978-989. <a href=\"https://dx.doi.org/10.1111/1365-2664.14381\" target=\"_blank\">https://dx.doi.org/10.1111/1365-2664.14381</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Cronau, R.J.T.; Telgenkamp, Y.; de Fouw, J; van Katwijk, M.M.; Bouma, T.; Heusinkveld, J.H.T.; Hoeijmakers, D.; van der Heide, T.; Lamers, L.P.M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Cronau, R.J.T. <i>et al.</i>","Englishabstract":"Coastal ecosystems are generally controlled by the combination of bottom-up (resource-driven) and top-down (consumer-driven) trophic, and non-trophic interactions. Anthropogenic disruption of these interactions, for example, through eutrophication or overfishing, leads to loss of the foundation species composing these ecosystems. Within degraded ecosystems, new interactions may become dominant, hampering restoration of the foundation species.We demonstrate this concept in saltwater Lake Grevelingen, where seagrass restoration was seriously hampered by a newly discovered non-trophic interaction between the seagrass <i>Zostera marina</i> and the ragworm <i>Platynereis dumerilii</i>. <i>Platynereis</i> constructs dwelling tubes between seagrass leaves by glueing and entangling them, leading to loss of biomass and increased epiphyte cover. To test the roles of epiphyte grazing (top-down) and eutrophication (bottom-up) on this new-found interaction, we executed a field experiment introducing the snail <i>Littorina littorea</i> under natural nutrient concentrations and <i>Platynereis</i> densities and performed a full factorial mesocosm experiment applying <i>Littorina, Platynereis</i> and nutrient treatments.Our field results show that survival of reintroduced <i>Zostera</i> in Lake Grevelingen is seriously hampered by <i>Platynereis</i>, which can be suppressed by grazer addition.In our mesocosm experiment, we demonstrate that top-down control by <i>Littorina</i> protects seagrass through two pathways: (1) mitigating bottom-up regulated epiphyte growth by trophic top-down forcing and (2) hampering the non-trophic interaction between <i>Zostera</i> and <i>Platynereis</i> by grazing epiphytes and dwelling tubes.<i>Synthesis and applications</i>. With coastal ecosystems globally under pressure, our study emphasises the importance of understanding ecosystem-specific trophic and non-trophic key interactions when considering restoration. We show how negative interspecific interactions can become dominant in degraded systems with absent key facilitating interactions. Next, we show that these negative interactions (leaf glueing), inhibiting foundation species restoration, can be overruled by active inclusion of a key facilitating interactions (epiphyte grazing by mesograzers). Finally, we provide a three-step co-introduction approach for restoration management.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Seagrass is protected from ragworm pressure by a newly discovered grazer–ragworm interaction; implications for restoration","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-18 01:32:35.444718","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"bottom-up; eelgrass; non-trophic; periwinkle; ragworm; restoration; top-down; trophic","OtherDescriptors":null,"Notes":null,"AnaPub":2023,"MonPub":null,"DateUpdate":"2023-11-27","DateCreate":"2023-06-29","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000953399100001","VABBcode":null,"OpenAcc":1,"DOI":"10.1111/1365-2664.14381"},"refs":null,"anarec":{"AnaID":365411,"PubliDate":2023,"Pagination":"978-989","XtraPublOfAnaID":null,"ISBN":null,"Volume":"60","Issue":"6","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43021,"SerRR":"Journal of Applied Ecology. 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