University of Wollongong Research Online University of Wollongong Thesis Collection University of Wollongong Thesis Collections 1986 The Illawarra rainforests: an historical, floristic and environmental study of their distribution and ecology Kevin Gibson Mills University of Wollongong Recommended Citation Mills, Kevin Gibson, The Illawarra rainforests: an historical, floristic and environmental study of their distribution and ecology, Doctor of Philosophy thesis, Department of Geography, University of Wollongong, 1986. http://ro.uow.edu.au/theses/1389 Research Online is the open access institutional repository for the University of Wollongong. For further information contact the UOW Library:
[email protected] THE ILLAWARRA RAINFORESTS AN HISTORICAL, FLORISTIC AND ENVIRONMENTAL STUDY OF THEIR DISTRIBUTION AND ECOLOGY A thesis submitted in fulfilment of the requirements for the award of the dearee of DOCTOR OF PHILOSOPHY from THE UNIVERSITY OF WOLLONGONG by KEVIN GIBSON MILLS B.A.CHons.) Wollonqona DEPARTMENT OF GEOGRAPHY 1986 For my Parents Cas and Val Mills who took • me into the bush at an early age i. ABSTRACT This study presents a detailed analysis of the structure, floristic pattern and environment of the Illawarra rainforests and also evaluates their relationships with rainforests elsewhere in Australia. The results presented here illustrate the fact that the district's rainforests can be viewed as a part of a continuum of rainforest vegetation throughout eastern Australia, with links to those well to the north and to the south. This research contributes to a national effort, over recent years, to more fully understand Australian rainforests. The rainforest vegetation found in the Illawarra district represents one of five major areas of rainforest in New South Wales, The original extent of the Illawarra rainforests is shown to have been largely in the form of three major rainforest concentrations: the "Illawarra Brush' of 12.000 ha: the 'Yarrawa Brush' of 2450 ha: and the 'Berkeley Brush' of 1600 ha.