Agricultural intensification and loss of matrix habitat over 23 years in the West Wimmera, south-eastern Australia

Maron, Martine and Fitzsimons, James 2007, Agricultural intensification and loss of matrix habitat over 23 years in the West Wimmera, south-eastern Australia, Biological conservation, vol. 135, no. 4, pp. 587-593, doi: 10.1016/j.biocon.2006.10.051.

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Title Agricultural intensification and loss of matrix habitat over 23 years in the West Wimmera, south-eastern Australia
Author(s) Maron, Martine
Fitzsimons, JamesORCID iD for Fitzsimons, James
Journal name Biological conservation
Volume number 135
Issue number 4
Start page 587
End page 593
Publisher Elsevier BV
Place of publication Amsterdam, The Netherlands
Publication date 2007-04
ISSN 0006-3207
Keyword(s) paddock trees
matrix habitat loss
centre pivot irrigation
agricultural intensification
Summary The global trend toward more intensive forms of agriculture is changing the nature of matrix habitat in agricultural areas. Removal of components of matrix habitat can affect native biota at the paddock and the landscape scale, particularly where intensification occurs over large areas. We identify the loss of paddock trees due to the proliferation of centre pivot irrigation in dryland farming areas as a potentially serious threat to the remnant biota of these areas. We used a region of south-eastern Australia as a case study to quantify land use change from grazing and dryland cropping to centre pivot irrigation over a 23-year period. We also estimated rates of paddock tree loss in 5 representative landscapes within the region over the same period. The total area affected by centre pivots increased from 0 ha in 1980 to nearly 9000 ha by 2005. Pivots were more likely to be established in areas which had originally been plains savannah and woodlands containing buloke (Allocasuarina luehmannii), a food source for an endangered bird. On average, 42% of paddock buloke trees present in 1982 were lost by 2005. In the two landscapes containing several centre pivots, the loss was 54% and 70%. This accelerated loss of important components of matrix habitat is likely to result in species declines and local extinctions. We recommend that measures to alleviate the likely negative impacts of matrix habitat loss on native biota be considered as part of regional planning strategies.
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Language eng
DOI 10.1016/j.biocon.2006.10.051
Field of Research 050299 Environmental Science and Management not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2006, Elsevier Ltd
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Document type: Journal Article
Collection: School of Life and Environmental Sciences
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