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Artículos de revistas sobre el tema "Koala distribution"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 4 de febrero de 2022

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1

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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2

Sullivan, B. J., W. M. Norris, and G. S. Baxter. "Low-density koala (Phascolarctos cinereus) populations in the mulgalands of south-west Queensland. II. Distribution and diet." Wildlife Research 30, no. 4 (2003): 331. http://dx.doi.org/10.1071/wr00032.

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This study used faecal pellets to investigate the broadscale distribution and diet of koalas in the mulgalands biogeographic region of south-west Queensland. Koala distribution was determined by conducting faecal pellet searches within a 30-cm radius of the base of eucalypts on 149 belt transects, located using a multi-scaled stratified sampling design. Cuticular analysis of pellets collected from 22 of these sites was conducted to identify the dietary composition of koalas within the region. Our data suggest that koala distribution is concentrated in the northern and more easterly regions of

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3

Ellis, W. A. H., B. J. Sullivan, A. T. Lisle, and F. N. Carrick. "The spatial and temporal distribution of koala faecal pellets." Wildlife Research 25, no. 6 (1998): 663. http://dx.doi.org/10.1071/wr97028.

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Faecal pellets were collected under trees used by free-ranging koalas in south-western, central and south-eastern Queensland to determine the spatial and temporal distribution of pellets with respect to the activity of koalas. Deposition of faecal pellets by koalas was analysed according to the time of day at which the tree was occupied. For free-ranging koalas, 47% of daily faecal pellet output was recovered using a collection mat of 8 × 8 m placed under a day-roost tree. The best predictor of pellet production was the presence of a koala in a tree between 1800 hours and midnight. For other p

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4

Wedrowicz, Faye, Jennifer Mosse, Wendy Wright, and Fiona E. Hogan. "Using non-invasive sampling methods to determine the prevalence and distribution of Chlamydia pecorum and koala retrovirus in a remnant koala population with conservation importance." Wildlife Research 45, no. 4 (2018): 366. http://dx.doi.org/10.1071/wr17184.

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Context Pathogenic infections are an important consideration for the conservation of native species, but obtaining such data from wild populations can be expensive and difficult. Two pathogens have been implicated in the decline of some koala (Phascolarctos cinereus) populations: urogenital infection with Chlamydia pecorum and koala retrovirus subgroup A (KoRV-A). Pathogen data for a wild koala population of conservation importance in South Gippsland, Victoria are essentially absent. Aims This study uses non-invasive sampling of koala scats to provide prevalence and genotype data for C. pecoru

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5

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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6

Clifton, I. D., W. A. H. Ellis, A. Melzer, and G. Tucker. "Water turnover and the northern range of the koala (Phascolarctos cinereus)." Australian Mammalogy 29, no. 1 (2007): 85. http://dx.doi.org/10.1071/am07010.

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Water turnover for koalas is positively correlated with the moisture content of selected trees suggesting that browse choice was driven by water requirements in summer but energy demands in winter. We compared the distribution of the koala to relative humidity and found that the bioregional delineation of the koala?s range corresponds closely to regions experiencing an average 9am relative humidity of less than 80% in February. This indicates that the northern coastal distribution of the koala may be limited by respiratory evaporative water loss as a cooling mechanism.

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7

Predavec, Martin, Daniel Lunney, Ian Shannon, Dave Scotts, John Turbill, and Bill Faulkner. "Mapping the likelihood of koalas across New South Wales for use in Private Native Forestry: developing a simple, species distribution model that deals with opportunistic data." Australian Mammalogy 37, no. 2 (2015): 182. http://dx.doi.org/10.1071/am15001.

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In Private Native Forestry in New South Wales, species-specific provisions in the code of practice are triggered by the presence of koalas (Phascolarctos cinereus), based on existing database records in the Atlas of NSW Wildlife. Whereas Species Distribution Modelling allows questions to be posed regarding the distribution of a species, and how it relates to environmental variables and threats, the key question, in many management situations, is whether or not a species is, or has been, present at a particular location, rather than the overall predicted distribution of the species. This is par

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8

Dique, David S., Deidré L. de Villiers, and Harriet J. Preece. "Evaluation of line-transect sampling for estimating koala abundance in the Pine Rivers Shire, south-east Queensland." Wildlife Research 30, no. 2 (2003): 127. http://dx.doi.org/10.1071/wr02042.

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Distance sampling using line transects has not been previously used or tested for estimating koala abundance. In July 2001, a pilot survey was conducted to compare the use of line transects with strip transects for estimating koala abundance. Both methods provided a similar estimate of density. On the basis of the results of the pilot survey, the distribution and abundance of koalas in the Pine Rivers Shire, south-east Queensland, was determined using line-transect sampling. In total, 134 lines (length 64 km) were used to sample bushland areas. Eighty-two independent koalas were sighted. Analy

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9

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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10

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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11

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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12

Quigley, Bonnie L., and Peter Timms. "The Koala Immune Response to Chlamydial Infection and Vaccine Development—Advancing Our Immunological Understanding." Animals 11, no. 2 (February 3, 2021): 380. http://dx.doi.org/10.3390/ani11020380.

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Chlamydia is a significant pathogen for many species, including the much-loved Australian marsupial, the koala (Phascolarctos cinereus). To combat this situation, focused research has gone into the development and refinement of a chlamydial vaccine for koalas. The foundation of this process has involved characterising the immune response of koalas to both natural chlamydial infection as well as vaccination. From parallels in human and mouse research, it is well-established that an effective anti-chlamydial response will involve a balance of cell-mediated Th1 responses involving interferon-gamm

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13

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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14

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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15

Lunney, Daniel, Mathew S. Crowther, Ian Shannon, and Jessica V. Bryant. "Combining a map-based public survey with an estimation of site occupancy to determine the recent and changing distribution of the koala in New South Wales." Wildlife Research 36, no. 3 (2009): 262. http://dx.doi.org/10.1071/wr08079.

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The present study demonstrates one solution to a problem faced by managers of species of conservation concern – how to develop broad-scale maps of populations, within known general distribution limits, for the purpose of targeted management action. We aimed to map the current populations of the koala, Phascolarctos cinereus, in New South Wales, Australia. This cryptic animal is widespread, although patchily distributed. It principally occurs on private property, and it can be hard to detect. We combined a map-based mail survey of rural and outer-urban New South Wales with recent developments i

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16

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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17

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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18

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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19

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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20

Jiang, Alex, Andrew Tribe, and Peter Murray. "The development of an improved scat survey method for koalas (Phascolarctos cinereus)." Australian Journal of Zoology 67, no. 3 (2019): 125. http://dx.doi.org/10.1071/zo20006.

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Koala scat surveys are important tools for determining koala presence and distribution in large forested areas where it is impractical to conduct direct observation surveys. However, current scat survey methods are problematic due to lack of either accuracy or feasibility, i.e. they are either biased or very time-consuming in the field. This study aimed to establish a new koala scat survey method with improved accuracy compared with existing methods, and practical in the field. We developed a new Balanced Koala Scat Survey method (BKSS), and evaluated it in the field by analysing scat detectab

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21

Phillips, Stephen, and John Callaghan. "Tree species preferences of koalas (Phascolarctos cinereus) in the Campbelltown area south-west of Sydney, New South Wales." Wildlife Research 27, no. 5 (2000): 509. http://dx.doi.org/10.1071/wr98087.

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Tree species preferences of a koala population inhabiting a small area of forest and woodland in the Campbelltown area, south-west of Sydney, were investigated over a two-year period. In total, 2499 trees from 45 independent field sites were assessed, with tree species preferences determined on the basis of a comparative analysis of proportional data relating to the presence/absence of koala faecal pellets. The results established that grey gum (Eucalyptus punctata) and blue-leaved stringybark (E. agglomerata) were most preferred by koalas in the study area, but only when growing on shale-base

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22

Osawa, R., PS Bird, DJ Harbrow, K. Ogimoto, and GJ Seymour. "Microbiological Studies of the Intestinal Microflora of the Koala, Phascolarctos-Cinereus .1. Colonization of the Cecal Wall by Tannin-Protein-Complex-Degrading Enterobacteria." Australian Journal of Zoology 41, no. 6 (1993): 599. http://dx.doi.org/10.1071/zo9930599.

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The tannin-protein-complex-degrading enterobacterium (T-PCDE), which specifically colonises the caecal wall of the koala, was investigated immunohistologically. Polyclonal antisera were raised against three strains of T-PCDE. Tissue from six koalas was subjected to immunogold staining using a pooled, absorbed antiserum. Numerous T-PCDE cells were observed in the bacterial layer attached to the caecal wall of five of the animals. The distribution pattern of T-PCDE varied: cells were either scattered throughout the bacterial layer or congregated in areas that apparently contained debris of diges

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23

Common, IFB, and M. Horak. "Four new species of Telanepsia Turner (Lepidoptera : Oecophoridae) with larvae feeding on koala and possum scats." Invertebrate Systematics 8, no. 4 (1994): 809. http://dx.doi.org/10.1071/it9940809.

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Four species of Telanepsia Turner (Lepidoptera : Oecophoridae : Oecophorinae), T. stockeri, T: scatophila, T. tidbinbilla and T. coprobora, are described as new. The first three have been reared from larvae feeding and pupating within the scats of koalas (Phascolarctos cinereus Goldfuss). Two of these (T. stockeri and T. scatophila) were discovered during a study of koala distribution in the Tantawangalo State Forest, south-eastern New South Wales, and larvae of T. tidbinbilla were collected in koala scats in the Tidbinbilla Nature Reserve, Australian Capital Territory. Larvae of the fourth sp

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24

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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25

Zee, Yeng Peng, William V. Holt, Camryn D. Allen, Vere Nicolson, Michelle Burridge, Allan Lisle, Frank N. Carrick, and Steve D. Johnston. "Effects of cryopreservation on mitochondrial function and heterogeneity, lipid raft stability and phosphatidylserine translocation in koala (Phascolarctos cinereus) spermatozoa." Reproduction, Fertility and Development 19, no. 7 (2007): 850. http://dx.doi.org/10.1071/rd07084.

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Koala sperm mitochondria were examined by cryomicroscopy using the fluorescent probe JC-1, which distinguishes high (red) and low (green) mitochondrial membrane potential (MMP). At normal body temperature, ~70% of live and untreated spermatozoa exhibited high MMP whereas <3% of live untreated spermatozoa exhibited low potential. A third class, in which single midpieces contained mixed mitochondrial populations, was also detected. Heterogeneity was noted in the level of MMP between individual koalas, individual spermatozoa and even between mitochondrial gyres within single midpieces. MMP of

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26

Alfano, Niccolò, Johan Michaux, Serge Morand, Ken Aplin, Kyriakos Tsangaras, Ulrike Löber, Pierre-Henri Fabre, et al. "Endogenous Gibbon Ape Leukemia Virus Identified in a Rodent (Melomys burtoni subsp.) from Wallacea (Indonesia)." Journal of Virology 90, no. 18 (July 6, 2016): 8169–80. http://dx.doi.org/10.1128/jvi.00723-16.

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ABSTRACTGibbon ape leukemia virus (GALV) and koala retrovirus (KoRV) most likely originated from a cross-species transmission of an ancestral retrovirus into koalas and gibbons via one or more intermediate as-yet-unknown hosts. A virus highly similar to GALV has been identified in an Australian native rodent (Melomys burtoni) after extensive screening of Australian wildlife. GALV-like viruses have also been discovered in several Southeast Asian species, although screening has not been extensive and viruses discovered to date are only distantly related to GALV. We therefore screened 26 Southeas

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Melzer, Alistair, Frank Carrick, Peter Menkhorst, Daniel Lunney, and Barbara ST John. "Overview, Critical Assessment, and Conservation Implications of Koala Distribution and Abundance." Conservation Biology 14, no. 3 (June 2000): 619–28. http://dx.doi.org/10.1046/j.1523-1739.2000.99383.x.

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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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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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Davies, Nicole Ashley, Galina Gramotnev, Clive McAlpine, Leonie Seabrook, Greg Baxter, Daniel Lunney, Jonathan R. Rhodes, and Adrian Bradley. "Physiological Stress in Koala Populations near the Arid Edge of Their Distribution." PLoS ONE 8, no. 11 (November 12, 2013): e79136. http://dx.doi.org/10.1371/journal.pone.0079136.

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Burach, F., A. Pospischil, J. Hanger, J. Loader, T. Pillonel, G. Greub, and N. Borel. "Chlamydiales in the Koala (Phascolarctos cinereus): Organ Distribution and Related Histopathological Findings." Journal of Comparative Pathology 152, no. 1 (January 2015): 54. http://dx.doi.org/10.1016/j.jcpa.2014.10.056.

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Zabaras, R., B. J. Richardson, and S. G. Wyllie. "Evolution in the suite of semiochemicals secreted by the sternal gland of Australian marsupials." Australian Journal of Zoology 53, no. 4 (2005): 257. http://dx.doi.org/10.1071/zo04070.

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The nature and distribution of the components, and evolution of the suite of compounds, secreted by the sternal gland of marsupials were studied. Individuals from nine families (18 species) of marsupials and from the echidna were sampled over an 18-month period. The assay system used gas chromatography/mass spectrometry and utilised thermal desorption with cryofocusing. Parsimony analysis, constrained by an assumed phylogeny, was used to examine the evolution of the suite of compounds detected. Large interspecies variation in secretion composition was observed with acetic acid, short-chain (C6

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Dissanayake, Ravi Bandara, Mark Stevenson, Rachel Allavena, and Joerg Henning. "Predicting koala (Phascolarctos cinereus) distribution from incidental sighting data in South-East Queensland, Australia." Global Ecology and Conservation 28 (August 2021): e01662. http://dx.doi.org/10.1016/j.gecco.2021.e01662.

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Burach, Fabienne, Andreas Pospischil, Jon Hanger, Jo Loader, Trestan Pillonel, Gilbert Greub, and Nicole Borel. "Chlamydiaceae and Chlamydia-like organisms in the koala (Phascolarctos cinereus)—Organ distribution and histopathological findings." Veterinary Microbiology 172, no. 1-2 (August 2014): 230–40. http://dx.doi.org/10.1016/j.vetmic.2014.04.022.

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Timmermans, S. H., M. Mommers, J. S. Gubbels, S. P. J. Kremers, A. Stafleu, C. D. A. Stehouwer, M. H. Prins, J. Penders, and C. Thijs. "Maternal smoking during pregnancy and childhood overweight and fat distribution: the KOALA Birth Cohort Study." Pediatric Obesity 9, no. 1 (January 30, 2013): e14-e25. http://dx.doi.org/10.1111/j.2047-6310.2012.00141.x.

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Myers, G. S. A., S. A. Mathews, M. Eppinger, C. Mitchell, K. K. O'Brien, O. R. White, F. Benahmed, et al. "Evidence that Human Chlamydia pneumoniae Was Zoonotically Acquired." Journal of Bacteriology 191, no. 23 (September 11, 2009): 7225–33. http://dx.doi.org/10.1128/jb.00746-09.

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ABSTRACT Zoonotic infections are a growing threat to global health. Chlamydia pneumoniae is a major human pathogen that is widespread in human populations, causing acute respiratory disease, and has been associated with chronic disease. C. pneumoniae was first identified solely in human populations; however, its host range now includes other mammals, marsupials, amphibians, and reptiles. Australian koalas (Phascolarctos cinereus) are widely infected with two species of Chlamydia, C. pecorum and C. pneumoniae. Transmission of C. pneumoniae between animals and humans has not been reported; howev

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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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Shabani, Farzin, Mohsen Ahmadi, Katharina J. Peters, Simon Haberle, Antoine Champreux, Frédérik Saltré, and Corey J. A. Bradshaw. "Climate‐driven shifts in the distribution of koala‐browse species from the Last Interglacial to the near future." Ecography 42, no. 9 (June 27, 2019): 1587–99. http://dx.doi.org/10.1111/ecog.04530.

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McAlpine, C. A., J. R. Rhodes, M. E. Bowen, D. Lunney, J. G. Callaghan, D. L. Mitchell, and H. P. Possingham. "Can multiscale models of species’ distribution be generalized from region to region? A case study of the koala." Journal of Applied Ecology 45, no. 2 (April 2008): 558–67. http://dx.doi.org/10.1111/j.1365-2664.2007.01431.x.

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Cristescu, Romane H., Klara Goethals, Peter B. Banks, Frank N. Carrick, and Céline Frère. "Experimental Evaluation of Koala Scat Persistence and Detectability with Implications for Pellet-Based Fauna Census." International Journal of Zoology 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/631856.

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Establishing species distribution and population trends are basic requirements in conservation biology, yet acquiring this fundamental information is often difficult. Indirect survey methods that rely on fecal pellets (scats) can overcome some difficulties but present their own challenges. In particular, variation in scat detectability and decay rate can introduce biases. We studied how vegetation communities affect the detectability and decay rate of scats as exemplified by koalasPhascolarctos cinereus: scat detectability was highly and consistently dependent on ground layer complexity (intro

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41

Piltz, Ross O. "Accurate data processing for neutron Laue diffractometers." Journal of Applied Crystallography 51, no. 3 (May 25, 2018): 635–45. http://dx.doi.org/10.1107/s1600576718005058.

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The factors affecting the accuracy of structural refinements from image-plate neutron Laue diffractometers are analysed. From this analysis, an improved data-processing method is developed which optimizes the intensity corrections for exposure scaling, wavelength distribution, absorption and extinction corrections, and the wavelength/spatial/time dependence of the image-plate detector efficiencies. Of equal importance is an analysis of the sources of uncertainty in the final corrected intensities, without which bias of the merged intensities occurs, due to the dominance of measurements with sm

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Jurskis, Vic, Alan Douch, Ken McCray, and Jim Shields. "A playback survey of the koala,Phascolarctos cinereus, and a review of its distribution in the Eden Region of south-eastern New South Wales." Australian Forestry 64, no. 4 (January 2001): 226–31. http://dx.doi.org/10.1080/00049158.2001.10676193.

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Löber, Ulrike, Matthew Hobbs, Anisha Dayaram, Kyriakos Tsangaras, Kiersten Jones, David E. Alquezar-Planas, Yasuko Ishida, et al. "Degradation and remobilization of endogenous retroviruses by recombination during the earliest stages of a germ-line invasion." Proceedings of the National Academy of Sciences 115, no. 34 (August 6, 2018): 8609–14. http://dx.doi.org/10.1073/pnas.1807598115.

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Endogenous retroviruses (ERVs) are proviral sequences that result from colonization of the host germ line by exogenous retroviruses. The majority of ERVs represent defective retroviral copies. However, for most ERVs, endogenization occurred millions of years ago, obscuring the stages by which ERVs become defective and the changes in both virus and host important to the process. The koala retrovirus, KoRV, only recently began invading the germ line of the koala (Phascolarctos cinereus), permitting analysis of retroviral endogenization on a prospective basis. Here, we report that recombination w

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Forbes, Duncan A. "Reverse engineering the Milky Way." Monthly Notices of the Royal Astronomical Society 493, no. 1 (January 29, 2020): 847–54. http://dx.doi.org/10.1093/mnras/staa245.

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ABSTRACT The ages, metallicities, alpha-elements, and integrals of motion of globular clusters (GCs) accreted by the Milky Way from disrupted satellites remain largely unchanged over time. Here we have used these conserved properties in combination to assign 76 GCs to five progenitor satellite galaxies – one of which we dub the Koala dwarf galaxy. We fit a leaky-box chemical enrichment model to the age–metallicity distribution of GCs, deriving the effective yield and the formation epoch of each satellite. Based on scaling relations of GC counts we estimate the original halo mass, stellar mass,

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Calin, V. L., G. E. D. Petrescu, M. Mihailescu, F. M. Brehar, M. Lisievici, B. Comanescu, N. Tarba, M. R. Gorgan, T. Savopol, and M. G. Moisescu. "P04.17 Differential diagnosis of gliomas using Digital Holographic Microscopy." Neuro-Oncology 21, Supplement_3 (August 2019): iii32—iii33. http://dx.doi.org/10.1093/neuonc/noz126.112.

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Abstract BACKGROUND The clinical course and prognostic of gliomas depend on the tumor histological and molecular features. The histopathological diagnosis requests well-trained specialists and multi-step operational procedures for sample preparation. Faster and more objective protocols should be implemented in support of pathologists. The Quantitative Phase Imaging based methods are biologically proved to be efficient in revealing, without any labeling, important characteristics of the living specimens having different structural complexity. We used Digital Holographic Microscopy (DHM) to acqu

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Wilmott, Lachlan, Dympna Cullen, George Madani, Martin Krogh, and Kylie Madden. "Are koalas detected more effectively by systematic spotlighting or diurnal searches?" Australian Mammalogy 41, no. 1 (2019): 157. http://dx.doi.org/10.1071/am18006.

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Koalas (Phascolarctos cinereus) are difficult to detect due to their cryptic nature, occurrence at low densities and broad distribution. We compare the relative effectiveness of two common, direct survey techniques used to detect koalas: spotlighting and diurnal searches. Seventy-six 2-ha sites were surveyed using both spotlighting and diurnal searching. Each site was surveyed for 0.5 person-hours, such that search area and effort were equal. In this study, spotlighting was found to be 3.25 times more effective at detecting koalas than day searches. Therefore, where access and terrain allows,

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Codjia, Sylvie, Augustin Aoudji, Kourouma Koura, and Jean Cossi Ganglo. "Systèmes Agroforestiers A Garcinia Kola Heckel Au Sud-Est Du Bénin : Distribution Géographique, Connaissances Endogènes Et Retombées Financières." European Scientific Journal, ESJ 14, no. 12 (April 30, 2018): 188. http://dx.doi.org/10.19044/esj.2018.v14n12p188.

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This study was carried out in three districts (Avrankou, Adjarra, and Ifangni) of south-eastern Benin, and aimed to analyze the socio-economic and ethnobotanical importance of Garcinia kola Heckel, in order to contribute to their sustainable management. Focus groups were conducted with three groups, composed of 10 owners of G. kola per district each and the result showed that Garcinia kola Heckel became extinct in their naturally occurring state in Benin. Besides, a survey was conducted among 140 owners of G. kola randomly selected in the study area. The results showed that the average number

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Logan, M., and G. D. Sanson. "The effects of lactation on the feeding behaviour and activity patterns of free-ranging female koalas (Phascolarctos cinereus Goldfuss)." Australian Journal of Zoology 51, no. 4 (2003): 415. http://dx.doi.org/10.1071/zo03017.

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The free-ranging feeding behaviour and activity patterns of three lactating and two non-lactating female koalas (Phascolarctos cinereus) were investigated using acoustically sensitive radio-telemetry. Lactating females were found to consume more leaf material, masticate more per leaf and at a greater rate, and perform more ingestive and mercyism mastications per 24 h than non-lactating females. Results suggest than female koalas are 'income breeders' that compensate for the higher energetic demands of lactation by increasing intake and, to a lesser degree, investing more in each mouthful so as

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Nartshuk, Emilia. "A revision of grassflies of the tribe Chloropini (Diptera, Chloropidae) of Finland, Estonia and North-West Russia." Entomologica Fennica 9, no. 3 (September 1, 1998): 153–83. http://dx.doi.org/10.33338/ef.83979.

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Collections of Chloropini: genera Chlorops Meigen, Epichlorops Becker and Melanum Becker from Finland, Estonia, Karelia and the Kola Peninsula are revised. 24 species are recorded from Finland, 21 for Karelia and 8 for the Kola Peninsula. Three species of Chlorops for Finland, 3 for Estonia, 21 for Karelia and 8 for Murmansk oblast are recorded for the first time. The northern limits of distribution of Chlorops species are compared with the isopleths of effective temperature sums. A correlation between the distribution of Chlorops species northward and eastward in the Palaearctic is discussed.

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Rovenchak, Andrij. "Telling apartFelidaeandUrsidaefrom the distribution of nucleotides in mitochondrial DNA." Modern Physics Letters B 32, no. 05 (February 20, 2018): 1850057. http://dx.doi.org/10.1142/s0217984918500574.

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Rank–frequency distributions of nucleotide sequences in mitochondrial DNA are defined in a way analogous to the linguistic approach, with the highest-frequent nucleobase serving as a whitespace. For such sequences, entropy and mean length are calculated. These parameters are shown to discriminate the species of the Felidae (cats) and Ursidae (bears) families. From purely numerical values we are able to see in particular that giant pandas are bears while koalas are not. The observed linear relation between the parameters is explained using a simple probabilistic model. The approach based on the

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