{"refrec":{"BRefID":289168,"RR":"<b>Nogueira, P.; Gambi, M.C.; Vizzini, S.; Califano, G.; Tavares, A.M.; Santos, R.; Martínez-Crego, B.</b> (2017). Altered epiphyte community and sea urchin diet in <i>Posidonia oceanica</i> meadows in the vicinity of volcanic CO<sub>2</sub> vents. <i>Mar. Environ. Res. 127</i>: 102-111. <a href=\"https://dx.doi.org/10.1016/j.marenvres.2017.04.002\" target=\"_blank\">https://dx.doi.org/10.1016/j.marenvres.2017.04.002</a>","BEntID":281205,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Mar. Environ. Res. 127</i>: 102-111. <a href=\"https://dx.doi.org/10.1016/j.marenvres.2017.04.002\" target=\"_blank\">https://dx.doi.org/10.1016/j.marenvres.2017.04.002</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Nogueira, P.; Gambi, M.C.; Vizzini, S.; Califano, G.; Tavares, A.M.; Santos, R.; Martínez-Crego, B.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Nogueira, P. <i>et al.</i>","Englishabstract":"Ocean acidification (OA) predicted for 2100 is expected to shift seagrass epiphyte communities towards the dominance of more tolerant non-calcifying taxa. However, little is known about the indirect effects of such changes on food provision to key seagrass consumers. We found that epiphyte communities of the seagrass <i>Posidonia oceanica</i> in two naturally acidified sites (i.e. north and south sides of a volcanic CO<sub>2</sub> vent) and in a control site away from the vent at the Ischia Island (NW Mediterranean Sea) significantly differed in composition and abundance. Such differences involved a higher abundance of non-calcareous crustose brown algae and a decline of calcifying polychaetes in both acidified sites. A lower epiphytic abundance of crustose coralline algae occurred only in the south side of the vents, thus suggesting that OA may alter epiphyte assemblages in different ways due to interaction with local factors such as differential fish herbivory or hydrodynamics. The OA effects on food items (seagrass, epiphytes, and algae) indirectly propagated into food provision to the sea urchin <i>Paracentrotus lividus</i>, as reflected by a reduced <i>P. oceanica</i> exploitation (i.e. less seagrass and calcareous epiphytes in the diet) in favour of non-calcareous green algae in both vent sites. In contrast, we detected no difference close and outside the vents neither in the composition of sea urchin diet nor in the total abundance of calcareous versus non-calcareous taxa. More research, under realistic scenarios of predicted pH reduction (i.e. ≤ 0.32 units of pH by 2100), is still necessary to better understand cascading effects of this altered urchin exploitation of food resources under acidified conditions on ecosystem diversity and function.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Altered epiphyte community and sea urchin diet in <i>Posidonia oceanica</i> meadows in the vicinity of volcanic CO<sub>2</sub> vents","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-20 01:32:22.951403","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Coastal waters; Coralline algae; Calcifying organisms; Communitycomposition; Epiphytes; Global change; Gut content; Marine ecology;Ocean acidification; Paracentrotus lividus; Seagrass","OtherDescriptors":null,"Notes":null,"AnaPub":2017,"MonPub":null,"DateUpdate":"2017-09-19","DateCreate":"2017-09-18","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000402212400011","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.marenvres.2017.04.002"},"refs":null,"anarec":{"AnaID":289168,"PubliDate":2017,"Pagination":"102-111","XtraPublOfAnaID":null,"ISBN":null,"Volume":"127","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43357,"SerRR":"Marine Environmental Research. 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