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Journal articles on the topic 'Koala habitat'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2023

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1

Lunney, Daniel, Stephen Phillips, John Callaghan, and Dionne Coburn. "Determining the distribution of Koala habitat across a shire as a basis for conservation: a case study from Port Stephens, New South Wales." Pacific Conservation Biology 4, no. 3 (1998): 186. http://dx.doi.org/10.1071/pc980186.

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The Australian National Koala Conservation Strategy recognizes the importance of conserving Koalas in their existing habitat, particularly through the integration of Koala conservation into local government planning (ANZECC 1998). The aim of this study was to define, rank and map the distribution of Koala habitat in Port Stephens Shire, New South Wales. The procedure was to merge the results of two independent survey techniques, each of which was interpreted using a vegetation map specifically prepared for this study. A field survey used a plot-based sampling protocol to determine tree species

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2

Reckless, Hailee J., Michael Murray, and Mathew S. Crowther. "A review of climatic change as a determinant of the viability of koala populations." Wildlife Research 44, no. 7 (2017): 458. http://dx.doi.org/10.1071/wr16163.

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The koala (Phascolarctos cinereus) occupies a broad range of eastern and southern Australia, extending over tropical coastal, semiarid inland and temperate regions. In many areas koala populations are under threat, in particular from the direct and indirect effects of ongoing habitat destruction due to increased urbanisation and other anthropogenic processes. Climate change presents additional threats to the integrity of koala habitats because many species of food and non-food trees have narrow climate envelopes and are unable to adapt to altered temperatures and rainfall. Climate extremes als

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Masters, Pip, Toni Duka, Steve Berris, and Graeme Moss. "Koalas on Kangaroo Island: from introduction to pest status in less than a century." Wildlife Research 31, no. 3 (2004): 267. http://dx.doi.org/10.1071/wr03007.

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In less than a century the ecological profile of koalas on Kangaroo Island has shifted from that of a species introduced for conservation purposes to one of pest status. Between 1923 and 1925, 18 koalas were released on Kangaroo Island. Their numbers increased rapidly and in 1997 a population-control program was implemented based on a population estimate of 5000 koalas. During the course of this program, it became clear that the koala population on Kangaroo Island was much greater and more widely distributed than previously thought, hence a more comprehensive population survey was carried out.

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4

Menkhorst, Peter, David Ramsey, Tim O'Brien, Emily Hynes, and Desley Whisson. "Survival and movements of koalas translocated from an over-abundant population." Wildlife Research 46, no. 7 (2019): 557. http://dx.doi.org/10.1071/wr19090.

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Abstract Context At some sites in southern Victoria, browsing pressure caused by high-density koala populations can result in defoliation of preferred browse trees. In extreme cases, this over-browsing can lead to widespread tree death and starvation of koalas. To reduce the potential for mortality of trees and koalas, a management strategy that includes fertility control of females and translocation of healthy individuals (male and female) has been adopted. AimsTo compare the short- to medium-term survival and body condition of koalas translocated from over-browsed habitat and released into u

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5

Smith, Andrew G., Clive McAlpine, Jonathan Rhodes, Leonie Seabrook, Daniel Lunney, and Greg Baxter. "Are there habitat thresholds in koala occupancy in the semiarid landscapes of the Mulgalands Bioregion?" Wildlife Research 40, no. 5 (2013): 413. http://dx.doi.org/10.1071/wr13010.

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Context Habitat thresholds are the critical point(s), below which the probability of occurrence of a species declines. Identifying thresholds assists land managers to decide how much habitat is needed to conserve a species. However, for any given species, a threshold may not exist, or might occur at one scale but not at others, and it may differ across regions. The use of critical habitat thresholds can negatively affect populations if simplified conservation targets for habitat retention are prescribed. This problem is relevant to the koalas where there is evidence of habitat thresholds in me

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6

Callaghan, John, Clive McAlpine, David Mitchell, Jane Thompson, Michiala Bowen, Jonathan Rhodes, Carol de Jong, Renee Domalewski, and Alison Scott. "Ranking and mapping koala habitat quality for conservation planning on the basis of indirect evidence of tree-species use: a case study of Noosa Shire, south-eastern Queensland." Wildlife Research 38, no. 2 (2011): 89. http://dx.doi.org/10.1071/wr07177.

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Context Mapping the habitat and distribution of a species is critical for developing effective conservation plans. Koala (Phascolarctos cinereus, Phascolarctidae) distribution is constrained by the nutritional and shelter requirements provided by a relatively small number of key tree species in any given area. Identifying these key species provides a practical foundation for mapping koala habitat and prioritising areas for conservation. Aims To determine key tree species for koalas in Noosa Shire (south-eastern Queensland, Australia) as a basis for mapping koala habitat quality. Methods We app

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7

Dique, David S., Harriet J. Preece, Jim Thompson, and Deidré L. de Villiers. "Determining the distribution and abundance of a regional koala population in south-east Queensland for conservation management." Wildlife Research 31, no. 2 (2004): 109. http://dx.doi.org/10.1071/wr02031.

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Koala surveys were used to determine the distribution and abundance of a threatened regional koala population in south-east Queensland to assist with the development of effective conservation management programs. Daytime systematic searches of strip transects were conducted twice yearly from 1996 to 1999 to determine koala density at a number of sites in urban, remnant bushland and bushland strata. Mean density estimates for 27 survey sites ranged from 0.02 to 1.26 koalas ha–1. Koala densities were generally higher in large tracts and remnant patches of eucalypt bushland towards the centre of

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8

Ellis, William, Sean FitzGibbon, Alistair Melzer, Robbie Wilson, Steve Johnston, Fred Bercovitch, David Dique, and Frank Carrick. "Koala habitat use and population density: using field data to test the assumptions of ecological models." Australian Mammalogy 35, no. 2 (2013): 160. http://dx.doi.org/10.1071/am12023.

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In principle, conservation planning relies on long-term data; in reality, conservation decisions are apt to be based upon limited data and short-range goals. For the koala (Phascolarctos cinereus), frequently reliance is made on the assumption that indirect signs can be used to indicate behavioural preferences, such as diet choice. We examined the relationship between the use of trees by koalas and the presence of scats beneath those trees. Tree use was associated with scat presence on 49% of occasions when koalas were radio-tracked in both central Queensland (n = 10 koalas) and south-east Que

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9

Seabrook, Leonie, Clive McAlpine, Greg Baxter, Jonathan Rhodes, Adrian Bradley, and Daniel Lunney. "Drought-driven change in wildlife distribution and numbers: a case study of koalas in south west Queensland." Wildlife Research 38, no. 6 (2011): 509. http://dx.doi.org/10.1071/wr11064.

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Context Global climate change will lead to increased climate variability, including more frequent drought and heatwaves, in many areas of the world. This will affect the distribution and numbers of wildlife populations. In south-west Queensland, anecdotal reports indicated that a low density but significant koala population had been impacted by drought from 2001–2009, in accord with the predicted effects of climate change. Aims The study aimed to compare koala distribution and numbers in south-west Queensland in 2009 with pre-drought estimates from 1995–1997. Methods Community surveys and faec

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Dique, David S., Jim Thompson, Harriet J. Preece, Guy C. Penfold, Deidré L. de Villiers, and Ros S. Leslie. "Koala mortality on roads in south-east Queensland: the koala speed-zone trial." Wildlife Research 30, no. 4 (2003): 419. http://dx.doi.org/10.1071/wr02029.

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In 1995, the Queensland Parks and Wildlife Service, the Queensland Department of Main Roads and Redland Shire Council initiated the Koala Speed Zone Trial in the Koala Coast, south-east Queensland. The aim of the trial was to assess the effect of differential speed signs on the number of koalas (Phascolarctos cinereus) hit by vehicles in the Koala Coast from 1995 to 1999. On the basis of information collected by the Queensland Parks and Wildlife Service 1407 koalas were hit by vehicles in the Koala Coast during the five-year study (mean 281 koalas per year, range 251–315). Monitoring of vehicl

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Lunney, Daniel, Carol Esson, Chris Moon, Murray Ellis, and Alison Matthews. "A Community-based Survey of the Koala, Phascolarctos cinereus, in the Eden Region of South-eastern New South Wales." Wildlife Research 24, no. 1 (1997): 111. http://dx.doi.org/10.1071/wr94034.

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A community-based postal survey (questionnaire and map) was undertaken in the Eden region of south-eastern New South Wales in 1991–92 to help determine the local distribution of koalas and to obtain information on which to base a regional plan of management for koalas. The 1198 replies from the II 600 households in the region represented all parts of the area surveyed. The survey responses suggest that koalas are rare in the Eden region, and that the number of koalas has been constantly low for the last four decades. The records are scattered both chronologically and geographically. National P

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Dennison, S., G. J. Frankham, L. E. Neaves, C. Flanagan, S. FitzGibbon, M. D. B. Eldridge, and R. N. Johnson. "Population genetics of the koala (Phascolarctos cinereus) in north-eastern New South Wales and south-eastern Queensland." Australian Journal of Zoology 64, no. 6 (2016): 402. http://dx.doi.org/10.1071/zo16081.

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Habitat loss and fragmentation are key threats to local koala (Phascolarctos cinereus) populations. Broad-scale management is suboptimal for koalas because distribution models are not easily generalised across regions. Therefore, it is imperative that data relevant to local management bodies are available. Genetic data provides important information on gene flow and potential habitat barriers, including anthropogenic disturbances. Little genetic data are available for nationally significant koala populations in north-eastern New South Wales, despite reported declines due to urbanisation and ha

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13

Quigley, Bonnie L., and Peter Timms. "Helping koalas battle disease – Recent advances in Chlamydia and koala retrovirus (KoRV) disease understanding and treatment in koalas." FEMS Microbiology Reviews 44, no. 5 (June 18, 2020): 583–605. http://dx.doi.org/10.1093/femsre/fuaa024.

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ABSTRACT The iconic Australian marsupial, the koala (Phascolarctos cinereus), has suffered dramatic population declines as a result of habitat loss and fragmentation, disease, vehicle collision mortality, dog attacks, bushfires and climate change. In 2012, koalas were officially declared vulnerable by the Australian government and listed as a threatened species. In response, research into diseases affecting koalas has expanded rapidly. The two major pathogens affecting koalas are Chlamydia pecorum, leading to chlamydial disease and koala retrovirus (KoRV). In the last eight years, these pathog

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14

de Oliveira, S. M., P. J. Murray, D. L. de Villiers, and G. S. Baxter. "Ecology and movement of urban koalas adjacent to linear infrastructure in coastal south-east Queensland." Australian Mammalogy 36, no. 1 (2014): 45. http://dx.doi.org/10.1071/am12046.

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In Redland City, koalas (Phascolarctos cinereus) are in rapid decline as they are exposed to anthropogenic threats such as habitat clearing, dog attacks, vehicle collisions and disease. This study investigated the influence of linear infrastructure on the movement and habitat use of urban koalas. Seven koalas were tracked for up to 28 weeks during the breeding season. Home ranges were calculated for 95% Minimum Convex Polygon (MCP95%) and 95% fixed Kernel Density (FK95%). Koalas responded to the landscape in different ways. Linear infrastructure did not restrict the movements of most koalas. H

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Adams-Hosking, Christine, Hedley S. Grantham, Jonathan R. Rhodes, Clive McAlpine, and Patrick T. Moss. "Modelling climate-change-induced shifts in the distribution of the koala." Wildlife Research 38, no. 2 (2011): 122. http://dx.doi.org/10.1071/wr10156.

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Context The impacts of climate change on the climate envelopes, and hence, distributions of species, are of ongoing concern for biodiversity worldwide. Knowing where climate refuge habitats will occur in the future is essential to conservation planning. The koala (Phascolarctos cinereus) is recognised by the International Union for Conservation of Nature (IUCN) as a species highly vulnerable to climate change. However, the impact of climate change on its distribution is poorly understood. Aims We aimed to predict the likely shifts in the climate envelope of the koala throughout its natural dis

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16

Lee, Tristan, Kyall R. Zenger, Robert L. Close, and David N. Phalen. "Genetic analysis reveals a distinct and highly diverse koala (Phascolarctos cinereus) population in South Gippsland, Victoria, Australia." Australian Mammalogy 34, no. 1 (2012): 68. http://dx.doi.org/10.1071/am10035.

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Population genetics can reveal otherwise hidden information involving a species’ history in a given region. Koalas were thought to have been virtually exterminated from the Australian state of Victoria during the koala fur trade of the late 1800s. Koalas in the South Gippsland region of Victoria were examined using microsatellite markers to infer population structure and gene flow and to locate a possible remnant gene pool. The results indicate that the South Gippsland koala population had higher genetic diversity (A = 5.97, HO = 0.564) than other published Victorian populations, and was genet

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17

Rhind, Susan G., Murray V. Ellis, Martin Smith, and Daniel Lunney. "Do Koalas Phascolarctos cinereus use trees planted on farms? A case study from north-west New South Wales, Australia." Pacific Conservation Biology 20, no. 3 (2014): 302. http://dx.doi.org/10.1071/pc140302.

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Biodiversity benefits are routinely cited as an outcome of planting trees on farms but there has been too little information to properly substantiate such claims. This study is among the first to examine the use of plantings by arboreal mammals. We examined an important inland koala population and its use of farm revegetation to determine: (1) if koalas use planted trees; (2) patch characteristics correlated with use/non-use by koalas; and, (3) contextual characteristics correlated with use/non-use. Surveys of koala dung, also known as scats or faecal pellets, were conducted under trees in 19

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18

Jiang, Alex, Andrew Tribe, Clive J. C. Phillips, and Peter J. Murray. "Do Livestock Injure and Kill Koalas? Insights from Wildlife Hospital and Rescue Group Admissions and an Online Survey of Livestock–Koala Conflicts." Animals 11, no. 9 (September 13, 2021): 2684. http://dx.doi.org/10.3390/ani11092684.

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Koala populations in Australia are declining due to threats such as chlamydiosis, wild dog predation and vehicle collision. In the last decade, grazing livestock emerged anecdotally as a threat to koala survival in areas where koala habitat and livestock grazing land overlap. This is the first study investigating the significance of livestock-inflicted injuries and deaths in koala populations over a large spatial and temporal scale. We investigated the outcome, scale, and frequency of livestock–koala incidents via an online survey and analysed koala admission records in Queensland wildlife hos

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Lunney, Daniel, Eleanor Stalenberg, Truly Santika, and Jonathan R. Rhodes. "Extinction in Eden: identifying the role of climate change in the decline of the koala in south-eastern NSW." Wildlife Research 41, no. 1 (2014): 22. http://dx.doi.org/10.1071/wr13054.

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Context Reviews of climate change in Australia have identified that it is imposing additional stresses on biodiversity, which is already under threat from multiple human impacts. Aims The present study aimed to determine the contributions of several factors to the demise of the koala in the Eden region in south-eastern New South Wales and, in particular, to establish to what extent climate change may have exacerbated the decline. Methods The study built on several community-based koala surveys in the Eden region since 1986, verified through interviews with survey respondents. Historical record

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Kavanagh, Rodney P., Matthew A. Stanton, and Traecey E. Brassil. "Koalas continue to occupy their previous home-ranges after selective logging in Callitris - Eucalyptus forest." Wildlife Research 34, no. 2 (2007): 94. http://dx.doi.org/10.1071/wr06126.

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The koala (Phascolarctos cinereus) is a charismatic, high-profile species whose conservation needs are commonly perceived to be incompatible with logging. However, koala biology and the results of chronosequence studies elsewhere suggest that this species may tolerate a degree of habitat alteration caused by logging. In this study, 30 koalas, five in each of six areas available for logging within a mixed white cypress pine (Callitris glaucophylla)–Eucalyptus forest in north-western New South Wales, were radio-tracked for one year during 1997–1998 to determine their movements, home-range sizes

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Lunney, Danial, Shaan Gresser, Lisa E. O'neill, Alison Matthews, and Jonathan Rhodes. "The impact of fire and dogs on Koalas at Port Stephens, New South Wales, using population viability analysis." Pacific Conservation Biology 13, no. 3 (2007): 189. http://dx.doi.org/10.1071/pc070189.

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The Port Stephens Koala Phascolarctos cinereus population has been regarded as one of the strongholds for Koalas in New South Wales. This study applied population viability analysis to investigate the impact of fire and predation by dogs on the viability of the local population. The rapid decline of the modelled Koala population under basic assumptions throws the assumed security of such large populations into question. In all the modelled management scenarios, reducing mortality had more influence than any other factor. Reducing the severity and frequency of large catastrophic fires improved

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Barth, Benjamin J., Sean I. FitzGibbon, Amber Gillett, Robbie S. Wilson, Beth Moffitt, Geoffrey W. Pye, Dalene Adam, Harriet Preece, and William A. Ellis. "Scattered paddock trees and roadside vegetation can provide important habitat for koalas (Phascolarctos cinereus) in an agricultural landscape." Australian Mammalogy 42, no. 2 (2020): 194. http://dx.doi.org/10.1071/am18031.

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Habitat loss and fragmentation threaten the survival of koalas in Queensland. In rural landscapes, remaining koala habitat is often in the form of scattered paddock trees, patches of vegetation and roadside vegetation. The aims of this study were to (1) quantify the use of these three habitat types; (2) determine whether there is an increased use of scattered trees during the breeding season; and (3) describe the movement characteristics (daily step-length and turning angle) of koalas in different habitat types. To do this, koalas were caught and fitted with global positioning system (GPS) log

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Phillips, Stephen. "Differing mortality rates in two concurrently radio-tracked populations of koala (Phascolarctos cinereus)." Australian Mammalogy 40, no. 2 (2018): 198. http://dx.doi.org/10.1071/am16047.

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Radio-tracking studies enable insights into factors that contribute to koala mortality. Two radio-tracking studies investigating the impacts of disturbance events on koalas were undertaken in different areas over the same period. Both studies employed similar techniques for koala capture, processing and monitoring. In one study, none of nine koalas died during a 5-month monitoring program following their translocation into a new habitat area, while in the second study 6 of 11 koalas died over the same period during an in situ impact-monitoring study. The two populations differed morphologicall

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Sullivan, B. J., G. S. Baxter, A. T. Lisle, L. Pahl, and W. M. Norris. "Low-density koala (Phascolarctos cinereus) populations in the mulgalands of south-west Queensland. IV. Abundance and conservation status." Wildlife Research 31, no. 1 (2004): 19. http://dx.doi.org/10.1071/wr02037.

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Urban encroachment on dense, coastal koala populations has ensured that their management has received increasing government and public attention. The recently developed National Koala Conservation Strategy calls for maintenance of viable populations in the wild. Yet the success of this, and other, conservation initiatives is hampered by lack of reliable and generally accepted national and regional population estimates. In this paper we address this problem in a potentially large, but poorly studied, regional population in the State that is likely to have the largest wild populations. We draw o

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Santamaria, Flavia, Rupert Palme, Rolf Schlagloth, Edith Klobetz-Rassam, and Joerg Henning. "Seasonal Variations of Faecal Cortisol Metabolites in Koalas in South East Queensland." Animals 11, no. 6 (May 31, 2021): 1622. http://dx.doi.org/10.3390/ani11061622.

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The Koala (Phascolarctos cinereus) is an endemic marsupial inhabiting four states of Australia. Urbanisation, declining habitat, drought and fires are threatening the survival of this flagship species. These threats may cause acute and chronic stress in koalas, which might also be associated with occurrence of infectious diseases in koala populations. Stress may induce an increase in cortisol reflected in increased faecal cortisol metabolite (FCM) values. To be able to use faecal cortisol metabolites to measure stress levels in this species, our aim was to determine baseline values for males a

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Peel, Emma, Yuanyuan Cheng, Julianne T. Djordjevic, Denis O’Meally, Mark Thomas, Michael Kuhn, Tania C. Sorrell, Wilhelmina M. Huston, and Katherine Belov. "Koala cathelicidin PhciCath5 has antimicrobial activity, including against Chlamydia pecorum." PLOS ONE 16, no. 4 (April 14, 2021): e0249658. http://dx.doi.org/10.1371/journal.pone.0249658.

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Devastating fires in Australia over 2019–20 decimated native fauna and flora, including koalas. The resulting population bottleneck, combined with significant loss of habitat, increases the vulnerability of remaining koala populations to threats which include disease. Chlamydia is one disease which causes significant morbidity and mortality in koalas. The predominant pathogenic species, Chlamydia pecorum, causes severe ocular, urogenital and reproductive tract disease. In marsupials, including the koala, gene expansions of an antimicrobial peptide family known as cathelicidins have enabled pro

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Wu, Huiying, Noam Levin, Leonie Seabrook, Ben Moore, and Clive McAlpine. "Mapping Foliar Nutrition Using WorldView-3 and WorldView-2 to Assess Koala Habitat Suitability." Remote Sensing 11, no. 3 (January 22, 2019): 215. http://dx.doi.org/10.3390/rs11030215.

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Conservation planning and population assessment for widely-distributed, but vulnerable, arboreal folivore species demands cost-effective mapping of habitat suitability over large areas. This study tested whether multispectral data from WorldView-3 could be used to estimate and map foliar digestible nitrogen (DigN), a nutritional measure superior to total nitrogen for tannin-rich foliage for the koala (Phascolarctos cinereus). We acquired two WorldView-3 images (November 2015) and collected leaf samples from Eucalyptus woodlands in semi-arid eastern Australia. Linear regression indicated the no

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Lollback, Gregory W., J. Guy Castley, Alexa C. Mossaz, and Jean-Marc Hero. "Fine-scale changes in spatial habitat use by a low-density koala population in an isolated periurban forest remnant." Australian Mammalogy 40, no. 1 (2018): 84. http://dx.doi.org/10.1071/am16036.

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Koala (Phascolarctos cinereus) populations in south-east Queensland are in decline. Although various studies have looked at broad-scale tree preference and habitat quality, there has been little attempt to quantify fine-scale activity shifts from one year to the next or examination of activity at the mesoscale. This study quantified koala activity levels in a 909-ha forest patch at Karawatha Forest Park, in south Brisbane. The Spot Assessment Technique was used to quantify activity and tree selection on 33 long-term monitoring plots in 2009 and 2010. In total, 843 trees were searched and koala

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Joyce, Briony A., Michaela D. J. Blyton, Stephen D. Johnston, Paul R. Young, and Keith J. Chappell. "Koala retrovirus genetic diversity and transmission dynamics within captive koala populations." Proceedings of the National Academy of Sciences 118, no. 38 (September 7, 2021): e2024021118. http://dx.doi.org/10.1073/pnas.2024021118.

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Koala populations are currently in rapid decline across Australia, with infectious diseases being a contributing cause. The koala retrovirus (KoRV) is a gammaretrovirus present in both captive and wild koala colonies that presents an additional challenge for koala conservation in addition to habitat loss, climate change, and other factors. Currently, nine different subtypes (A to I) have been identified; however, KoRV genetic diversity analyses have been limited. KoRV is thought to be exogenously transmitted between individuals, with KoRV-A also being endogenous and transmitted through the ger

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Tucker, G., A. Melzer, and W. Ellis. "The development of habitat selection by subadult koalas." Australian Journal of Zoology 55, no. 5 (2007): 285. http://dx.doi.org/10.1071/zo07035.

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Dispersal by subadults is the principal source of gene flow between groups of koalas in Queensland, so understanding the behaviour of these immature animals is a priority for understanding the ecology of the species. Recent reports postulate that dispersing young koalas may inherit maternal tree selection, but avoid competing with adults. We compared the tree use and diet of adult female koalas with that of their offspring on St Bees Island, Queensland, using radio-tracking and faecal cuticle analysis, to examine this prediction. Koalas at St Bees Island used both fodder and non-fodder species

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Gallahar, Nicole, Kellie Leigh, and David Phalen. "Koala tree selection in a mixed-tenure landscape and post-fire implications." Wildlife Research 48, no. 8 (2021): 737. http://dx.doi.org/10.1071/wr20206.

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Abstract ContextThe more frequent and intense bushfires predicted under climate change are likely to heavily impact koalas living inside protected areas and intact forests, which makes koala habitat in asset protection zones more important. Understanding how koalas use different habitats in a mixed-tenure landscape can inform effective conservation management. AimsThe aims of this study were to determine (1) the species and size of trees used by koalas, (2) whether choice of daytime trees was affected by available proportions of tree species and sizes in koala home ranges, and (3) whether deve

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Melzer, Alistair, Romane Cristescu, William Ellis, Sean FitzGibbon, and Gabriella Manno. "The habitat and diet of koalas (Phascolarctos cinereus) in Queensland." Australian Mammalogy 36, no. 2 (2014): 189. http://dx.doi.org/10.1071/am13032.

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Descriptions of koala (Phascolarctos cinereus) habitat and diet from 11 sites across Queensland are presented. Koala activity was recorded from 49 regional ecosystems across nine land zones and five bioregions. Thirty-four tree species were identified from an examination of leaf cuticle fragments in faecal pellets. Although the species were from three families and seven genera, 44% of browse species (15) belonged to the myrtaceous subgenus Symphomyrtus. Eleven of these contributed most of the koala diet across all sites. However, most species were present in minor or trace dietary elements. Th

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Lunney, Daniel, Martin Predavec, Indrie Miller, Ian Shannon, Mark Fisher, Chris Moon, Alison Matthews, John Turbill, and Jonathan R. Rhodes. "Interpreting patterns of population change in koalas from long-term datasets in Coffs Harbour on the north coast of New South Wales." Australian Mammalogy 38, no. 1 (2016): 29. http://dx.doi.org/10.1071/am15019.

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We examined a long-term, repeat dataset for the koala population within Coffs Harbour Local Government Area. Analyses of these data have led to the conclusion that, following a perceived population decline in the 1980s, the koala population of Coffs Harbour has endured between 1990 and 2011 and showed no evidence of a precipitous decline during this period. Rather, the population change is best characterised as stable to slowly declining. This conclusion appears to contradict a common view of recent koala population declines on the north coast of New South Wales. There are four possible explan

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Goldingay, Ross L., and Barbara Dobner. "Home range areas of koalas in an urban area of north-east New South Wales." Australian Mammalogy 36, no. 1 (2014): 74. http://dx.doi.org/10.1071/am12049.

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Conserving wildlife within urban areas requires knowledge of habitat requirements and population processes, and the management of threatening factors. The koala (Phascolarctos cinereus) is one species that is adversely affected by urban development. Sick and injured koalas in the Lismore urban area are regularly taken into care. We radio-tracked koalas released from care in order to estimate home-range areas and to determine their fate. Koalas were tracked for periods of 90–742 days; 7 of 10 survived for a period of at least one year. Home ranges defined by the minimum convex polygon (MCP100%)

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Ellis, Murray V., Susan G. Rhind, Martin Smith, and Daniel Lunney. "Changes in the distribution of reports of the koala (Phascolarctos cinereus) after 16 years of local conservation initiatives at Gunnedah, north-west New South Wales, Australia." Pacific Conservation Biology 23, no. 1 (2017): 63. http://dx.doi.org/10.1071/pc16004.

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In the early 1990s the koala became the mascot for a revegetation program to control salinity on agricultural land around Gunnedah in New South Wales, and a snapshot of the koala’s distribution in the shire was collected at that time, mainly via a mail survey. After the success of tree plantings in the 1990s, the koala population of the Liverpool Plains became a focus of increasing local conservation efforts, as well as research to explain koala population dynamics. This included a repeat mail survey conducted in 2006, which enabled the comparison of the reported distributions to be undertaken

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Madani, G. F., K. R. Ashman, V. S. A. Mella, and D. A. Whisson. "A review of the 'noose and flag' method to capture free-ranging koalas." Australian Mammalogy 42, no. 3 (2020): 341. http://dx.doi.org/10.1071/am19064.

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The capture of free-ranging individuals is often needed for research, population management and health assessment. Because of its iconic and threatened species status, methods to capture koalas (Phascolarctos cinereus) receive disproportionate scrutiny. We collated data on koala capture frequency, duration held by noose and incidents from six studies of koalas in Victoria and New South Wales that all used the ‘noose and flag’ method as the primary method of capture. Adverse events occurred in less than 1% of all captures (7 of 1236). Mean capture time in three of four locations recording durat

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Briscoe, Natalie J., Kathrine A. Handasyde, Stephen R. Griffiths, Warren P. Porter, Andrew Krockenberger, and Michael R. Kearney. "Tree-hugging koalas demonstrate a novel thermoregulatory mechanism for arboreal mammals." Biology Letters 10, no. 6 (June 2014): 20140235. http://dx.doi.org/10.1098/rsbl.2014.0235.

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How climate impacts organisms depends not only on their physiology, but also whether they can buffer themselves against climate variability via their behaviour. One of the way species can withstand hot temperatures is by seeking out cool microclimates, but only if their habitat provides such refugia. Here, we describe a novel thermoregulatory strategy in an arboreal mammal, the koala Phascolarctos cinereus. During hot weather, koalas enhanced conductive heat loss by seeking out and resting against tree trunks that were substantially cooler than ambient air temperature. Using a biophysical mode

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Bentley, P. D., and T. D. Penman. "Is there an inherent conflict in managing fire for people and conservation?" International Journal of Wildland Fire 26, no. 6 (2017): 455. http://dx.doi.org/10.1071/wf16150.

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Wildfires are a natural disturbance in many ecosystems, creating challenges for land management agencies who need to simultaneously reduce risk to people and maintain ecological values. Here we use the PHOENIX RapidFire fire behaviour simulator to compare fuel treatment strategies that meet the twin objectives of reducing wildfire risk to human settlements and a fire sensitive endangered species, the koala (Phascolarctos cinereus) in south-eastern Australia. The local koala population is in decline and a conservation management plan is being prepared to exclude wildfire for a 10-year period to

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Munks, SA, R. Corkrey, and WJ Foley. "Characteristics of Arboreal Marsupial Habitat in the Semi-Arid Woodlands of Northern Queensland." Wildlife Research 23, no. 2 (1996): 185. http://dx.doi.org/10.1071/wr9960185.

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The distribution of the koala (Phascolarctos cinereus) and the common brushtail possum (Trichosurus vulpecula) within the Prairie-Torrens Creek Alluvials province of the Desert Upland region of north-western Queensland was examined. The optimum habitat for each species as indicated by the occurrence of faecal pellet groups was found to be that associated with creek-lines. However, other land types were also used by each species to varying degrees. The relationship between various habitat variables and pellet group counts was investigated using Multiple regression and a Generalised linear model

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Mitchell, Dave L., Mariela Soto-Berelov, and Simon D. Jones. "Regional Variation in Forest Canopy Height and Implications for Koala (Phascolarctos cinereus) Habitat Mapping and Forest Management." Forests 12, no. 11 (October 29, 2021): 1494. http://dx.doi.org/10.3390/f12111494.

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Previous research has shown that the Koala (Phascolarctos cinereus) prefers larger trees, potentially making this a key factor influencing koala habitat quality. Generally, tree height is considered at regional scales which may overlook variation at patch or local scales. In this study, we aimed to derive a set of parameters to assist in classifying koala habitat in terms of tree height, which can then be used as an overlay for existing habitat maps. To determine canopy height variation within a specific forest community across a broad area in eastern Australia, we used freely available Airbor

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Dahlhausen, Katherine E., Guillaume Jospin, David A. Coil, Jonathan A. Eisen, and Laetitia G. E. Wilkins. "Isolation and sequence-based characterization of a koala symbiont: Lonepinella koalarum." PeerJ 8 (October 20, 2020): e10177. http://dx.doi.org/10.7717/peerj.10177.

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Koalas (Phascolarctos cinereus) are highly specialized herbivorous marsupials that feed almost exclusively on Eucalyptus leaves, which are known to contain varying concentrations of many different toxic chemical compounds. The literature suggests that Lonepinella koalarum, a bacterium in the Pasteurellaceae family, can break down some of these toxic chemical compounds. Furthermore, in a previous study, we identified L. koalarum as the most predictive taxon of koala survival during antibiotic treatment. Therefore, we believe that this bacterium may be important for koala health. Here, we isolat

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Hewson, Michael, Flavia Santamaria, and Alistair Melzer. "Field Testing Satellite-Derived Vegetation Health Indices for a Koala Habitat Managers Toolkit." Remote Sensing 14, no. 9 (April 28, 2022): 2119. http://dx.doi.org/10.3390/rs14092119.

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A Central Queensland University (CQU) partnership with the Queensland Government National Park management agency has developed a koala (Phascolarctos cinereus) habitat managers’ toolkit for vegetation health assessment. Private and public landholders use the field-based toolkit to assess habitat suitability or monitor conservation outcomes for the koala—an iconic Australian arboreal herbivorous marsupial. The toolkit was upgraded recently with instructions to process European Space Agency (ESA) Sentinel-2 multispectral satellite-derived selected vegetation maps for areal vegetation health tren

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Phillips, Stephen, John Callaghan, and Valerie Thompson. "The tree species preferences of koalas (Phascolarctos cinereus) inhabiting forest and woodland communities on Quaternary deposits in the Port Stephens area, New South Wales." Wildlife Research 27, no. 1 (2000): 1. http://dx.doi.org/10.1071/wr98054.

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An assessment of the tree species preferences of koalas inhabiting forest and woodland communities growing on Quaternary deposits in the Port Stephens area, New South Wales, was undertaken between November 1994 and March 1996. Using a plot-based methodology, 3847 trees were sampled, comprising 15 Eucalyptus species and 17 species of non-eucalypt. Evidence of tree use by koalas, specifically the presence of koala faecal pellets, was recorded from beneath 10 Eucalyptus species and 9 species of non-eucalypt. Tree species preferences were determined by analyses of log- likelihood ratios derived fr

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Hynes, E. F., K. A. Handasyde, Geoff Shaw, and Marilyn B. Renfree. "Levonorgestrel, not etonogestrel, provides contraception in free-ranging koalas." Reproduction, Fertility and Development 22, no. 6 (2010): 913. http://dx.doi.org/10.1071/rd09253.

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Management of high-density koala (Phascolarctos cinereus) populations is essential because of the browsing damage they inflict on their habitat. We have tested two types of gestagen implant, namely levonorgestrel and etonogestrel, as contraceptives for koalas. Free-ranging female koalas were given either a control, levonorgestrel (70 mg) or etonogestrel (34 or 68 mg) implant before the breeding season. Koalas were monitored every 4–12 weeks for births. Plasma progesterone was measured and a cytological smear of the urogenital sinus was taken. Fertility was high in the control group and the two

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Sullivan, B. J., G. S. Baxter, and A. T. Lisle. "Low-density koala (Phascolarctos cinereus) populations in the mulgalands of south-west Queensland. III. Broad-scale patterns of habitat use." Wildlife Research 30, no. 6 (2003): 583. http://dx.doi.org/10.1071/wr02036.

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To date there have been few quantitative studies of the distribution of, and relative habitat utilisation by, koalas in the mulgalands of Queensland. To examine these parameters we applied habitat-accessibility and relative habitat-utilisation indices to estimates of faecal pellet density sampled at 149 sites across the region. Modelling the presence of pellets using logistic regression showed that the potential range of accessible habitats and relative habitat use varied greatly across the region, with rainfall being probably the most important determinant of distribution. Within that distrib

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Knott, Tiffany, Daniel Lunney, Dionne Coburn, and John Callaghan. "An ecological history of Koala habitat in Port Stephens Shire and the Lower Hunter on the Central Coast of New South Wales, 1801-1998." Pacific Conservation Biology 4, no. 4 (1998): 354. http://dx.doi.org/10.1071/pc980354.

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This paper describes the vegetation of Port Stephens Shire and environs at the time of European settlement, defines the sequence of vegetation clearance since that time, and estimates the extent to which the pre-European vegetation represented Koala habitat. A study of historical records, newspapers, documents and reports was undertaken in conjunction with interviews with long-standing Port Stephens residents. The historical records show that Koalas were widespread and common during early settlement. Reconstruction of the original vegetation was based on descriptions by early explorers and set

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Cork, Steven J., Ian D. Hume, and William J. Foley. "Improving Habitat Models and Their Utility in Koala Conservation." Conservation Biology 14, no. 3 (June 2000): 660–68. http://dx.doi.org/10.1046/j.1523-1739.2000.99389.x.

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David, Patricia, Sharyn Rundle-Thiele, Bo Pang, Kathy Knox, Joy Parkinson, and Felix Hussenoeder. "Engaging the Dog Owner Community in the Design of an Effective Koala Aversion Program." Social Marketing Quarterly 25, no. 1 (January 13, 2019): 55–68. http://dx.doi.org/10.1177/1524500418821583.

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Introduction: This article outlines a dog owner–focused social marketing pilot program implemented in 2017, which aimed to reduce koala and domestic dog interactions in one local city council in Australia. Literature: Dog attacks and predation are the third most common cause of death in koalas after habitat loss and vehicle strikes. Programs aiming to reduce wildlife and domestic pet interactions frequently neglect human dimensions, and social sciences have been called upon to complement conservation efforts. Methods: Developed in consultation with dog training experts and the local regional c

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Mitchell, Dave L., Mariela Soto‐Berelov, William T. Langford, and Simon D. Jones. "Factors confounding koala habitat mapping at multiple decision‐making scales." Ecological Management & Restoration 22, no. 2 (March 16, 2021): 171–82. http://dx.doi.org/10.1111/emr.12468.

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Bryan, Brett Anthony. "A Generic Method for Identifying Regional Koala Habitat using GIS." Australian Geographical Studies 35, no. 2 (July 1997): 125–39. http://dx.doi.org/10.1111/1467-8470.00014.

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