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Biological legacies soften pine plantation effects for bryophytes
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Biological legacies are organic structures and patterns remaining after a disturbance that may contribute to the complexity of the recovering vegetation. Legacies may, in turn, reduce the impacts of human disturbances such as logging and habitat transformation on elements of biodiversity. To examine the effects of biological legacies on biotic responses after disturbance, we surveyed 32 sites for bryophytes in an area subject to large-scale conversion of native eucalypt forest to exotic Pinus radiata D. Don plantations in eastern Australia. We sampled bryophyte and substrate diversity (log, bare ground, upturned tree/log, and trees) in eight sites in each of four landscape context classes: pine plantation stands, elliptical-shaped remnants, strip-shaped remnants, and controls in a large area of contiguous, unmanaged eucalypt forest. We found a muted response by individual species of bryophyte to landscape context. We attribute this, in part, to the presence of logs in the intensively managed pine plantation sites. The boost in bryophyte diversity from species on logs meant that some pine sites supported similar species composition to the continuous eucalypt forest controls. Our findings also underline the importance of local controls and structural variation, including leaving logs and native trees in plantations, for enhancing bryophyte species richness in managed landscapes.
|Keywords:||Australia, bryophyte, eucalypt forest, logs, matrix, pine plantation, Pinus radiata, remnant, substrate|
|Journal or Publication Title:||Biodiversity and Conservation|
|Page Range:||pp. 1751-1764|
|Identification Number - DOI:||10.1007/s10531-008-9556-4|
The original publication is available at www.springerlink.com
|Date Deposited:||16 Feb 2009 22:46|
|Last Modified:||15 Jun 2009 04:02|
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