{"refrec":{"BRefID":116824,"RR":"<b>Tuya, F.; Ortega-Borges, L.; Del Rosario-Pínilla, A.B.; Haroun, R.J.</b> (2006). Spatio-temporal variability in a key herbivore, the long-spined black sea urchin (<i>Diadema antillarum</i>, Echinodermata: Echinoidea) in the Canary Islands. <i>J. Mar. Biol. Ass. U.K. 86(4)</i>: 791-797. <a href=\"https://dx.doi.org/10.1017/S0025315406013713\" target=\"_blank\">https://dx.doi.org/10.1017/S0025315406013713</a>","BEntID":111137,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Mar. Biol. Ass. U.K. 86(4)</i>: 791-797. <a href=\"https://dx.doi.org/10.1017/S0025315406013713\" target=\"_blank\">https://dx.doi.org/10.1017/S0025315406013713</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Tuya, F.; Ortega-Borges, L.; Del Rosario-Pínilla, A.B.; Haroun, R.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Tuya, F. <i>et al.</i>","Englishabstract":"Spatio-temporal variability in the population structure of long-spined black sea urchin, <i<Diadema antillarum<:i<, was investigated at two islands (Gran Canaria and Tenerife) in the Canarian Archipelago over a year. The mean abundance of <i>D. antillarum</i> across all counts was 2.70±0.07 ind m<sup>-2</sup> (mean± E, N=1440), while the mean biomass was 105.76±3.75 g m<sup>-2</sup> (mean±SE, N=1440). Abundances and biomasses of <i>D. antillarum</i> differed consistently between vegetated and unvegetated bottoms; however, locations within each habitat at each island fluctuated following different trends. For the overall study, mean densities and biomasses in the barren locations varied between 3.36-6.97 ind m<sup>-2</sup> and 93.76-405.13 g m<sup>-2</sup>, respectively; while mean densities and biomasses in the algal stand locations varied between 0-0.33 ind m<su>-2</sup> and 0 - 7.34 g m<sup>-2</sup>, respectively. Striking differences existed in the size-structure among locations; however, larger size-classes (test diameter >3.5 cm) were present at all locations, and usually dominated in terms of abundance. The majority of individuals in the algal stands were large-sized, probably as a result of the high abundance of the most palatable food. In contrast, small-sized individuals (test diameter <1.5 cm) only occurred in the barren habitat, suggesting that recruitment of <i>D. antillarum</i> could be favoured by the presence of high densities of congeners, as a way to decrease the risk of predation.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Spatio-temporal variability in a key herbivore, the long-spined black sea urchin (<i>Diadema antillarum</i>, Echinodermata: Echinoidea) in the Canary Islands","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-26 01:31:16.589612","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2006,"MonPub":null,"DateUpdate":"2021-11-26","DateCreate":"2007-11-13","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000239370300019","VABBcode":null,"OpenAcc":0,"DOI":"10.1017/S0025315406013713"},"refs":null,"anarec":{"AnaID":116824,"PubliDate":2006,"Pagination":"791-797","XtraPublOfAnaID":null,"ISBN":null,"Volume":"86","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43277,"SerRR":"Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge.  ISSN 0025-3154; e-ISSN 1469-7769","StandardTitleSer":"Journal of the Marine Biological Association of the United Kingdom","ISSN":"0025-3154","AbbrevSer":"J. Mar. Biol. Ass. 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