Impacts of the Replacement of Native Woodland with Exotic Pine Plantations on Leaf-Litter Invertebrate Assemblages: A Test of a Novel FrameworkReport as inadecuate




Impacts of the Replacement of Native Woodland with Exotic Pine Plantations on Leaf-Litter Invertebrate Assemblages: A Test of a Novel Framework - Download this document for free, or read online. Document in PDF available to download.

International Journal of EcologyVolume 2009 2009, Article ID 490395, 6 pages

Research ArticlePlant Functional Biology and Climate Change Cluster, Department of Environmental Sciences, University of Technology Sydney, P.O. Box 123, Broadway, NSW 2007, Australia

Received 2 September 2009; Accepted 2 November 2009

Academic Editor: L. M. Chu

Copyright © 2009 Brad R. Murray et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present an empirical comparison of invertebrate community structure between areas of undisturbed native eucalypt woodland and areas that have been cleared and replaced with plantations of exotic radiata pine Pinus radiata. Implementation of a novel conceptual framework revealed that both insect in autumn and arachnid in winter assemblages demonstrated inhibition in response to the pine plantations. Species richness declines occurred in several taxonomic Orders e.g., Hymenoptera, Blattodea, Acari without compensated increases in other Orders in plantations. This was, however, a seasonal response, with shifts between inhibition and equivalency observed in both insects and arachnids across autumn and winter sampling periods. Equivalency responses were characterized by relatively similar levels of species richness in plantation and native habitats for several Orders e.g., Coleoptera, Collembola, Psocoptera, Araneae. We propose testable hypotheses for the observed seasonal shifts between inhibition and equivalency that focus on diminished resource availability and the damp, moist conditions found in the plantations. Given the compelling evidence for seasonal shifts between categories, we recommend that seasonal patterns should be considered a critical component of further assemblage-level investigations of this novel framework for invasion ecology.





Author: Brad R. Murray, Andrew C. Baker, and Tessa C. Robson

Source: https://www.hindawi.com/



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