dr. david lindenmeyer -lrb- australian national university -rrb- has argued that the need for nest boxes indicates that logging practices are not ecologically sustainable , for conserving hollow-dependent species like leadbeater 's possum .. This sentence is hard to understand. A simpler version with equivalent meaning is the following:
Dr. David Lindenmeyer ( Australian National University ) has argued that the need for nest boxes indicates that logging practices are not ecologically sustainable . they do not sustainably conserve hollow-dependent species like Leadbeater &apos;s possum .