{"refrec":{"BRefID":332243,"RR":"<b>Barnes, R.S.K.</b> (2020). Do species display characteristic intraspecific levels of patchiness in a given habitat type? The case of intertidal seagrass macrobenthos. <i>Mar. Biol. (Berl.) 167(12)</i>: 177. <a href=\"https://dx.doi.org/10.1007/s00227-020-03793-9\" target=\"_blank\">https://dx.doi.org/10.1007/s00227-020-03793-9</a>","BEntID":325855,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Mar. Biol. (Berl.) 167(12)</i>: 177. <a href=\"https://dx.doi.org/10.1007/s00227-020-03793-9\" target=\"_blank\">https://dx.doi.org/10.1007/s00227-020-03793-9</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Barnes, R.S.K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Barnes, R.S.K.","Englishabstract":"Intertidal macrobenthic assemblages associated with monospecific stands of <i>Zostera muelleri</i>, <i>Cymodocea serratula</i>, <i>Halodule uninervis</i> and <i>Halophila ovalis</i> seagrasses are known to display uniform spatial patchiness on the Moreton Bay coast of North Stradbroke Island, Queensland, as do those in <i>Z. capensis</i> in the Knysna estuarine bay, South Africa. Thirty-seven historical datasets of these macrobenthic assemblages were re-analysed to assess variation of local patchiness in each of the 18 most common individual assemblage components at each of these localities in terms of three metrics: overall patchiness (Lloyd's index of patchiness), levels of unoccupancy, and variation in abundance across occupied samples (Lloyd's index of mean crowding). Within-site patchiness was not caused by a restriction of individual species to specific subareas but by variation in their local density, particularly by the extent of unoccupied ‘interstitial’ spaces within patches. Especially in the more uniform Queensland conditions, the more common species occurred relatively widely across the whole locality; individual samples from which a given species was absent never themselves formed patches, the number of such samples conforming to points on truncated normal curves of the frequency of occurrence. Of the 36 species investigated, the two most abundant and widespread both in Queensland and in South Africa displayed significant or near-significant uniformity of levels of local patchiness, whilst five showed significantly uniform mean crowding and ten significantly uniform unoccupancy. This is the first demonstration that some species may display a characteristic level of patchiness in a given habitat type.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Do species display characteristic intraspecific levels of patchiness in a given habitat type? 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ISSN 0025-3162; e-ISSN 1432-1793","StandardTitleSer":"Marine Biology: International Journal on Life in Oceans and Coastal Waters","ISSN":"0025-3162","AbbrevSer":"Mar. Biol. 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