The Problem of Being Large

It is not only big animals that have survival problems, as a recent study by Professor William Laurence of James Cook University has suggested that big trees are currently more at risk (http://www.guardian.co.uk/environment/2012/jan/26/giant-trees-dying?INTCMP=SRCH ). In the past, substantial trees seemed to be relatively resistant to environmental pressures but forest fragmentation appears to make them more vulnerable than their smaller counterparts.