{"refrec":{"BRefID":14343,"RR":"<b>Svane, I.; Lundälv, T.</b> (1982). Population dynamics and reproductive patterns of <i>Boltenia echinata</i> (Ascidiacea) on the Swedish west coast. <i>Neth. J. Sea Res. 16</i>: 105-118","BEntID":14343,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Neth. J. Sea Res. 16</i>: 105-118","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Svane, I.; Lundälv, T.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Svane, I.; Lundälv, T.","Englishabstract":"Two populations of <i>Boltenia echinata</i> on the Swedish west coast were studied over a 10-year period by stereo-photographic recording of subtidal, vertical rock walls at a depth of 20 m. Supplemental sampling was carried out over a one-year period. One sheltered population decreased in numbers with an explosive increase in <i>Ciona intestinalis</i>. Another, exposed population displayed a similar response at the increase of annual ascidians (<i>Ascidiella scabra, A. aspersa</i> and <i>Corella parallelogramma</i>). Variations in recruitment were influenced by interference competition, while adults were affected to a lesser extent. Recruitment and mortality at the exposed locality were twice as high as at the sheltered locality whereas the mean annual mortality pattern was similar. Adult mortality was related to physical factors ( mainly temperature), imposing stresses of different magnitudes on the two populations. Settling and recruitment was observed throughout the year. No relation was found between the presence of incubating embryos or larvae in the atrial cavity and settling.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Population dynamics and reproductive patterns of <i>Boltenia echinata</i> (Ascidiacea) on the Swedish west coast","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1982,"MonPub":null,"DateUpdate":"2019-07-04","DateCreate":"2001-07-31","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":14343,"PubliDate":1982,"Pagination":"105-118","XtraPublOfAnaID":null,"ISBN":null,"Volume":"16","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":44573,"SerRR":"Netherlands Journal of Sea Research. 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