Habitat structure is more important than vegetation composition for local‐level management of native terrestrial reptile and small mammal species living in urban remnants: A case study from Brisbane, Australia

Austral Ecology - Tập 32 Số 6 - Trang 669-685 - 2007
Jenni G. Garden1,2, Clive McAlpine1,2, Hugh P. Possingham2, Darryl Jones3
1School of Geography, Planning and Architecture, The University of Queensland, St Lucia, Qld 4072, Australia (Email: [email protected]),
2The Ecology Centre, The University of Queensland, St Lucia, Queensland, and
3Centre for Innovative Conservation Strategies and Australian School of Environmental Studies, Griffith University, Nathan, Queensland, Australia

Tóm tắt

Abstract  As urban areas continue to expand and replace natural and agricultural landscapes, the ability to manage and conserve native wildlife within urban environments is becoming increasingly important. To do so we first need to understand species' responses to local‐level habitat attributes in order to inform the decision‐making process and on‐ground conservation actions. Patterns in the occurrence of native terrestrial reptile and small mammal species in 59 sites located in remnant urban habitat fragments of Brisbane City were assessed against local‐level environmental characteristics of each site. Cluster analysis, multidimensional scaling ordination, and principal axis correlation were used to investigate relationships between species' occurrences and environmental characteristics. Native reptiles were most strongly associated with the presence of termite mounds, a high amount of fallen woody material, and a moderate amount of weed cover. Native small mammals were most strongly associated with the presence of grass trees (Xanthorrhoea spp.), and both reptiles and small mammals were negatively influenced by increased soil compaction. Significant floristic characteristics were considered to be important as structural, rather than compositional, habitat elements. Therefore, habitat structure, rather than vegetation composition, appears to be most important for determining native, terrestrial reptile and small mammal species assemblages in urban forest fragments. We discuss the management implications in relation to human disturbances and local‐level management of urban remnants.

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Austral Ecology

Tập 32 Số 6

669-685

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