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47 results on '"Seabrook, Leonie"'

1. Integrating plant‐ and animal‐based perspectives for more effective restoration of biodiversity

Author

McAlpine, Clive, Catterall, Carla P, Nally, Ralph Mac, Lindenmayer, David, Reid, J Leighton, Holl, Karen D, Bennett, Andrew F, Runting, Rebecca K, Wilson, Kerrie, Hobbs, Richard J, Seabrook, Leonie, Cunningham, Shaun, Moilanen, Atte, Maron, Martine, Shoo, Luke, Lunt, Ian, Vesk, Peter, Rumpff, Libby, Martin, Tara G, Thomson, James, and Possingham, Hugh

Subjects
Life on Land, Ecology
Published
2016

24. Forest loss and Borneo’s climate

Author

McAlpine, Clive A, primary, Johnson, Alex, additional, Salazar, Alvaro, additional, Syktus, Jozef, additional, Wilson, Kerrie, additional, Meijaard, Erik, additional, Seabrook, Leonie, additional, Dargusch, Paul, additional, Nordin, Haziq, additional, and Sheil, Douglas, additional

Published
2018
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43. At what spatial scales does resource selection vary? A case study of koalas in a semi-arid region.

Author

SMITH, ANDREW G., MCALPINE, CLIVE, RHODES, JONATHAN R., SEABROOK, LEONIE, BAXTER, GREG, LUNNEY, DANIEL, and BRADLEY, ADRIAN

Subjects
KOALA, CASE studies, ARID regions, HABITAT selection, SPATIAL variation, WILDLIFE conservation
Abstract

The conservation of any species requires understanding and predicting the distribution of its habitat and resource use, including the effects of scale-dependent variation in habitat and resource quality. Consequently, testing for resource selection at the appropriate scales is critical. We investigated how the resource selection process varies across scales, using koalas in a semi-arid landscape of eastern Australia as a case study. We asked: at what scales does tree selection by koalas vary across regions? We tested the importance of the variation of our ecological predictors at the following scales: (i) the site-scale (a stand of trees representing an individual koala's perception of local habitat); (ii) the landscape-scale (10 × 10 km area representing a space within which a population of koalas exists); and (iii) a combination of these scales. We used a mixed-modelling approach to quantify variation in selection of individual trees by koalas among sites and landscapes within a 1600 km2 study area. We found that tree species, and tree height, were the most important factors influencing tree selection, and that their effect did not vary across scales. In contrast, preferences for trees of different condition, which is the state of tree canopy health, did vary across landscapes, indicating spatial variation in the selection of trees with respect to tree condition at the landscape-scale, but not at the site-scale. We conclude that resource selection processes can depend on the quality of those resources at different scales and their heterogeneous nature across landscapes, highlighting the consequence of scale-dependent ecological processes. Designing studies that capture the heterogeneity in habitat and resources used by species that have an extensive distribution is an important prerequisite for effective conservation planning and management. [ABSTRACT FROM AUTHOR]

Published
2013
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44. The dietary preferences of koalas, Phascolarctos cinereus, in southwest Queensland.

Author

Wu, Huiying, McAlpine, Clive A., and Seabrook, Leonie M.

Abstract

The koala population in southwest Queensland is a large low-density population of important conservation value which is vulnerable to habitat loss, drought and climate change. The nutrient quality of Eucalyptus food trees favoured by koalas is an important factor influencing the survival of the koala on a low-nutrient-and-high-toxin diet. This study investigated the relationship between the diet of koalas, and food tree characteristics. Vegetation surveys, cuticle analysis and leaf chemical analysis were conducted in 14 study sites in southwest Queensland during the winter of 2010. Koala diet composition was different to eucalypt tree species availability, with Eucalyptus camaldulensis (56.5%) the most important tree species, £. coolabah ( 15.4%) and E. populnea ( 12.4%) of secondary preference. Leaf chemicals (moisture, total nitrogen, total phenolics, and a nutrition index = (moisture*nitrogen) / total phenolics) were significantly related to tree species, surface water availability, soil type and proximity to major creeks. Only leaf moisture was significantly correlated with koala food tree species preference. The presence of surface water appears to be a crucial characteristic of suitable koala habitat while riparian habitats dominant by E. camaldulensis are critical for conserving the koala populations in southwest Queensland. [ABSTRACT FROM AUTHOR]

Published
2012
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45. Integrating plant- and animal-based perspectives for more effective restoration of biodiversity

Author

Mcalpine, Clive, Catterall, Carla P., Mac Nally, Ralph, Lindenmayer, David, Reid, J. Leighton, Holl, Karen D., Bennett, Andrew F., Runting, Rebecca K., Wilson, Kerrie, Richard Hobbs, Seabrook, Leonie, Cunningham, Shaun, Moilanen, Atte, Maron, Martine, Shoo, Luke, Lunt, Ian, Vesk, Peter, Rumpff, Libby, Martin, Tara G., Thomson, James, and Possingham, Hugh

Subjects
Ecology

46. Fossil Fuel Footprint Stepping on Biodiversity.

Author

Butt, Nathale, Beyer, Hawthorne, and Seabrook, Leonie

Abstract

The article discusses the impact of the extraction of fossil fuels on the natural world. Topics discussed include the exacerbation of the threats to biodiversity by the growing impact of climate change, the disturbance footprint of ecosystem degradation and the projected increase in fossil fuel consumption. Among the direct effects of fuel extraction on biodiversity are habitat degradation and species loss.

Published
2014

47. Koala: a Historical Biography.

Author

Seabrook, Leonie

Abstract

The article reviews the book "Koala: A Historical Biography," Ann Moyal.

Published
2008

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