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dc.contributor.author Robert A. en_US
dc.date.accessioned 2009-11-09T12:05:44Z
dc.date.available 2009-11-09T12:05:44Z
dc.date.issued 2003-01-31 en_US
dc.identifier http://dx.doi.org/10.1046/j.1466-822X.2003.00316.x en_US
dc.identifier.citation Briers , R A 2003 , ' Range size and environmental calcium requirements of British freshwater gastropods ' Global Ecology and Biogeography , vol 12 , no. 1 , pp. 47-51 . , 10.1046/j.1466-822X.2003.00316.x en_US
dc.identifier.other PURE: 138975 en_US
dc.identifier.other dspace: 2160/3444 en_US
dc.identifier.uri http://hdl.handle.net/2160/3444
dc.description.abstract Calcium is an essential requirement for the successful growth and development of gastropod molluscs. Data for British freshwater gastropods were used to examine the relationship between environmental calcium requirements and British and European range sizes. At both spatial scales calciphile species, which require a high level of environmental calcium, had significantly smaller range sizes than species able to exploit a wide range of environmental calcium levels. However, at least in Britain, range size may also be influenced by the availability of suitable habitat. British and European range sizes were significantly correlated. This study provides evidence for niche-based explanations of range size variation, and suggests that both niche breadth and niche availability are important in determining range size. en_US
dc.format.extent 5 en_US
dc.relation.ispartof Global Ecology and Biogeography en_US
dc.subject calcium en_US
dc.subject freshwater molluscs en_US
dc.subject gastropods en_US
dc.subject geographical range size en_US
dc.subject macroecology en_US
dc.subject niche breadth en_US
dc.subject niche availability en_US
dc.title Range size and environmental calcium requirements of British freshwater gastropods en_US
dc.contributor.pbl Aberystwyth University en_US
dc.contributor.pbl Institute of Biological, Environmental and Rural Sciences en_US


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