{"refrec":{"BRefID":418693,"RR":"<b>Randrianalisoa, A.N.; Everett, B.I.; Fenessy, S.T.; Bé, J.J.; Ranivoarivelo, L.; Nomenisoa, A.L.</b> (2025). Demersal communities on Madagascar’s western shelf and slope. <i>Western Indian Ocean J. Mar. Sci. Spec. Issue 1</i>: 3547. <a href=\"https://dx.doi.org/10.4314/wiojms.si2025.1.3\" target=\"_blank\">https://dx.doi.org/10.4314/wiojms.si2025.1.3</a>","BEntID":416523,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Western Indian Ocean J. Mar. Sci. Spec. Issue 1</i>: 3547. <a href=\"https://dx.doi.org/10.4314/wiojms.si2025.1.3\" target=\"_blank\">https://dx.doi.org/10.4314/wiojms.si2025.1.3</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Randrianalisoa, A.N.; Everett, B.I.; Fenessy, S.T.; Bé, J.J.; Ranivoarivelo, L.; Nomenisoa, A.L.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Randrianalisoa, A.N. <i>et al.</i>","Englishabstract":"Marine biodiversity research in Madagascar has mostly focused on coastal habitats and deep-sea<br>ecosystems, with fewer studies on the shelf and upper slope. This study contributes to knowledge of the demersal communities on the west coast of Madagascar using data collected from 54<br>bottom trawls by the research vessel Dr Fridtjof Nansen in 2008 and 2009. The analyses focused<br>on two factors: location along the coast and continental shelf versus slope. A total of 239 genera<br>were identified, consisting of 31,194 individuals with a total weight of 3,335.61 kg. The Shan-<br>non-Wiener diversity index showed high diversity in the northwest. Diversity was higher on<br>the slope than shelf. The genus Upeneus dominated all shelf catches (19.35 %) and Rexea (2.18 %)<br>was strongly dominant on the slope. A clear distinction existed between the shelf and the slope<br>communities shown by nMDS plots and ANOSIM tests, with R values of 0.67 for the presence/<br>absence dataset, 0.061 for the abundance dataset, and 0.57 for the biomass dataset. According to<br>SIMPER analysis, the genera driving the dissimilarity between these two ecosystems are Rexea<br>and Chlorophthalmus. These results suggest that depth is the most influential factor in determining community assemblages","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Demersal communities on Madagascar’s western shelf and slope","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-29 01:33:10.286692","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Demersal marine fauna, Benthic, Diversity, Distribution, Western Madagascar, Western Indian Ocean (WIO)","OtherDescriptors":null,"Notes":null,"AnaPub":2025,"MonPub":null,"DateUpdate":"2025-10-03","DateCreate":"2025-10-02","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1,"DOI":"10.4314/wiojms.si2025.1.3"},"refs":null,"anarec":{"AnaID":418693,"PubliDate":2025,"Pagination":"3547","XtraPublOfAnaID":null,"ISBN":null,"Volume":"Spec. 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