Chalk and cheese or something in between: comparisons between remnant and regrowth Acacia harpophylla communities, western Darling Downs, Queensland

Wagner, Peter M. and Le Brocque, Andrew F. (2010) Chalk and cheese or something in between: comparisons between remnant and regrowth Acacia harpophylla communities, western Darling Downs, Queensland. In: Ecological Society of Australia 2010 Annual Conference: Sustaining Biodiversity - the next 50 Years (ESA 2010), 6-10 Dec 2010, Canberra, ACT, Australia. (Unpublished)

Full text not available from this repository.

Abstract

Endangered Brigalow (Acacia harpophylla) dominated ecosystems have been extensively cleared and modified for agricultural production throughout the Brigalow Belt Bioregion. Intensification of agricultural land uses in the region has resulted in significant fragmentation and disturbance of remnants. Rehabilitating regrowth is an important conservation alternative to preservation that can effectively ensure the persistence of Brigalow communities throughout highly modified landscapes. While legislation is now in place to restrict clearing of remnant and Brigalow regrowth, little is known on the resilience of the range of regrowth types. This research investigates patterns in composition, structure and condition of Brigalow remnants and a range of regrowth communities in relation to surrounding land-use factors and past disturbance practices. Thirty-eight sites in the western Darling Downs, southern Queensland), were sampled encompassing both remnant (disturbed and 'reference') and regrowth (Old Regrowth > 35y; Intermediate Regrowth 26-35y; Recent Regrowth <25y). Multivariate analysis of composition data showed a broad gradient from recent regrowth through older stages of regrowth to remnant. Compositionally, remnant sites were significantly different to regrowth; while within regrowth communities, recent regrowth (<20y) was different to older stages (ANOSIM). The later stages of regrowth may represent an alternate stable state in these landscapes. The implications for broader landscape management are discussed.


Statistics for USQ ePrint 18345
Statistics for this ePrint Item
Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: No
Item Status: Live Archive
Additional Information: Unrefereed paper, and is not available.
Depositing User: Dr Andrew Le Brocque
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 15 Feb 2011 11:38
Last Modified: 27 Apr 2012 06:30
Uncontrolled Keywords: brigalow; regrowth; remnant vegetations; Darling Downs
Fields of Research (FOR2008): 06 Biological Sciences > 0602 Ecology > 060208 Terrestrial Ecology
06 Biological Sciences > 0602 Ecology > 060202 Community Ecology(excl. Invasive Species Ecology)
05 Environmental Sciences > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity
05 Environmental Sciences > 0501 Ecological Applications > 050104 Landscape Ecology
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9608 Flora, Fauna and Biodiversity > 960804 Farmland, Arable Cropland and Permanent Cropland Flora, Fauna and Biodiversity
D Environment > 96 Environment > 9609 Land and Water Management > 960904 Farmland, Arable Cropland and Permanent Cropland Land Management
D Environment > 96 Environment > 9613 Remnant Vegetation and Protected Conservation Areas > 961305 Remnant Vegetation and Protected Conservation Areas in Farmland, Arable Cropland and Permanent Cropland Environments
URI: http://eprints.usq.edu.au/id/eprint/18345

Actions (login required)

View Item Archive Repository Staff Only