Agricultural change and paddock tree loss: implications for an endangered subspecies of red-tailed black-cockatoo

Article


Maron, Martine. 2005. "Agricultural change and paddock tree loss: implications for an endangered subspecies of red-tailed black-cockatoo." Ecological Management and Restoration. 6 (3), pp. 206-211. https://doi.org/10.1111/j.1442-8903.2005.00238.x
Article Title

Agricultural change and paddock tree loss: implications for an endangered subspecies of red-tailed black-cockatoo

ERA Journal ID3232
Article CategoryArticle
Authors
AuthorMaron, Martine
Journal TitleEcological Management and Restoration
Journal Citation6 (3), pp. 206-211
Number of Pages6
Year2005
Place of PublicationMelbourne, Australia
ISSN1442-7001
1839-3330
Digital Object Identifier (DOI)https://doi.org/10.1111/j.1442-8903.2005.00238.x
Web Address (URL)http://www3.interscience.wiley.com/cgi-bin/fulltext/118713041/PDFSTART
Abstract

Natural senescence and the intensification of agricultural practices are contributing to the continuing loss of paddock trees from agricultural regions in Australia. This is of particular concern in the southern Wimmera of western Victoria, where much of the endangered Buloke (Allocasuarina luehmannii) Woodland vegetation community is represented only by relict Buloke trees in paddocks, which also constitute critical feeding habitat for the endangered south-eastern subspecies of the Red-tailed Black-Cockatoo (Calyptorhynchus banksii graptogyne). I investigated the rate and correlates of loss of scattered Buloke trees in paddocks by examining aerial photographs taken over a period of 15 years in a region undergoing agricultural intensification. Tree loss over the period was measured using aerial photographs of five localities, covering a total of 7850 ha of agricultural land in the southern Wimmera. The average rate of loss (± 1 SE) was 25.8% ± 6.4% over the 15 years, or 1.7% per annum. The rate of tree loss was higher in areas under cultivation (32.5%) than areas under pasture (20.6%). A disproportionate number of trees was lost from locations where centre pivot irrigation systems were installed. Because of the slow growth rate of Buloke trees, revegetation efforts and offset planting are unlikely to compensate for losses of Red-tailed Black-Cockatoo habitat for approximately 100 years.

Keywordsagricultural intensification; buloke; endangered species; landscape change; paddock trees; red-tailed black-cockatoo; tree loss
ANZSRC Field of Research 2020310308. Terrestrial ecology
410206. Landscape ecology
410401. Conservation and biodiversity
Public Notes

Deposited in accordance with the copyright policy of the publisher. The definitive version is available at www.blackwell-synergy.com.

Byline AffiliationsDepartment of Biological and Physical Sciences
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