{"refrec":{"BRefID":221185,"RR":"<b>Ruwa, R. K.; Jaccarini, V.</b> (1986). Dynamic zonation of <i>Nerita plicata</i>, <i>N. undata</i> and <i>N. textilis</i> (Prosobranchia, Neritacea) populations on a rocky shore in Kenya. <i>Mar. Biol. (Berl.) 92(3)</i>: 425-430. <a href=\"http://dx.doi.org/10.1007/BF00392683\" target=\"_blank\">dx.doi.org/10.1007/BF00392683</a>","BEntID":212915,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Mar. Biol. (Berl.) 92(3)</i>: 425-430. <a href=\"https://dx.doi.org/10.1007/BF00392683\" target=\"_blank\">https://dx.doi.org/10.1007/BF00392683</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Ruwa, R. K.; Jaccarini, V.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Ruwa, R. K.; Jaccarini, V.","Englishabstract":"Vertical zonation of <i>Nerita plicata</i> Linnaeus, <i>N. undata</i> Linnaeus, and <i>N. textilis</i> Dillwyn, inhabiting the rocky cliffs of Nyali, Kenya, was studied through several spring-neap tidal cycles from November to December (northeastern monsoon) 1981 and May to July (southeastern monsoon) 1982. For the first time, a monsoon-related cycle of migration in <i>Nerita plicata</i> and <i>N. undata</i>, superimposed on the shorter term spring-neap cycle is demonstrated. Both species rest predominantly in the upper eulittoral zone and the littoral fringe. <i>N. plicata</i> and <i>N. undata</i> rest at significantly higher levels during the southeastern monsoon (SEM) than during the northeastern monsoon (NEM) (P<0.001). On and around neap-tide days <i>N. plicata, N. undata</i>, and <i>N. textilis</i> occupy significantly distinct mean resting positions (P<0.001) in both seasons; <i>N. undata</i> being the highest in the SEM, followed by <i>N. plicata</i>, with <i>N. textilis</i> always in the lowest level. In the NEM, <i>N. plicata</i> and <i>N. undata</i> sometimes change order. On and around springtide days in both seasons, the upper two species, <i>N. plicata</i> and <i>N. undata</i>, rest close together with no significant difference in their mean resting positions, but with both significantly higher than <i>N. textilis</i> (P<0.001). Both the spring-neap and the monsoon migrations of <i>N. plicata</i> and <i>N. undata</i> are interpreted as either direct or indirect responses to wave action.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Dynamic zonation of <i>Nerita plicata</i>, <i>N. undata</i> and <i>N. textilis</i> (Prosobranchia, Neritacea) populations on a rocky shore in Kenya","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-22 01:31:44.071861","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1986,"MonPub":null,"DateUpdate":"2013-08-13","DateCreate":"2012-12-12","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:A1986D771900014","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/BF00392683"},"refs":null,"anarec":{"AnaID":221185,"PubliDate":1986,"Pagination":"425-430","XtraPublOfAnaID":null,"ISBN":null,"Volume":"92","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43352,"SerRR":"Marine Biology: International Journal on Life in Oceans and Coastal Waters. 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