The vegetation structure and condition of contracting lowland habitat for Leadbeater’s possum (Gymnobelideus leadbeateri)
Joe Greet A D , Dan Harley B D , Kita Ashman B , Darcy Watchorn
B and David Duncan C
+ Author Affiliations
- Author Affiliations
A School of Ecosystem and Forest Sciences, The University of Melbourne, Burnley Campus, Richmond, Vic. 3121, Australia.
B Zoos Victoria, Wildlife Conservation and Science Department, Healesville Sanctuary, Healesville, Vic. 3777, Australia.
C School of Biosciences, The University of Melbourne, Parkville, Vic. 3010, Australia.
D Corresponding authors. Email: greetj@unimelb.edu.au; dharley@zoo.org.au
Australian Mammalogy 43(3) 344-353 https://doi.org/10.1071/AM20047
Submitted: 19 June 2020 Accepted: 23 November 2020 Published: 16 December 2020
Journal Compilation © Australian Mammal Society 2021 Open Access CC BY
Abstract
Lowland Leadbeater’s possums are on a trajectory to extinction, with fewer than 40 individuals surviving in the wild. Quantification of the vegetation characteristics of their occupied habitat is urgently needed to inform strategies to conserve this genetically distinct population. We surveyed the canopy and midstorey vegetation at all remaining (nine) occupied territories and eleven abandoned territories in lowland swamp forest at the Yellingbo Nature Conservation Reserve. For each territory we quantified canopy and midstorey stem density, basal area (total and live) and vegetation condition (percentage live basal area, tree crown vigour and plant area index) within a 50-m radius of known den locations. The canopy at all locations was dominated by mountain swamp gum (Eucalyptus camphora), with most occupied sites supporting dense midstorey dominated by paperbarks, either Melaleuca squarrosa or Melaleuca ericifolia. Occupied territories had higher stem densities and better vegetation condition than abandoned territories. Stem density alone was able to predict occupancy vis-à-vis abandoned sites with a high (80%) degree of accuracy. Lowland Leadbeater’s possums occupy swamp forests characterised by high stem density, particularly in the midstorey, structural complexity and healthy vegetation. These findings can help guide habitat restoration and translocation projects currently underway to expand the area of lowland habitat for this critically endangered species.
Keywords: arboreal marsupial, endangered, extinction, habitat structure, Leadbeater’s possum, Petauridae, stem density, swamp forest, threatened species, vegetation condition.
References
Ashman, K. R., and Watchorn, D. J. (2019). Quantifying landscape change as a consequence of plantation forestry expansion: a case study of the Koala Zone in south-west Victoria. Australian Forestry 82, 116–122.| Quantifying landscape change as a consequence of plantation forestry expansion: a case study of the Koala Zone in south-west Victoria.Crossref | GoogleScholarGoogle Scholar |
Bennett, A. F., and Saunders, D. A. (2010). Conservation Biology for All. Conservation biology for all 93, 1544–1550.
Brooks, E., Kristensen, K., Benthem, J., Magnusson, A., Berg, W., Nielsen, A., Skaug, J., Mächler, M., and Bolker, M. (2017). glmmTMB balances speed and flexibility among packages for zero-inflated generalized linear mixed modeling. The R Journal 9, 378–400.
| glmmTMB balances speed and flexibility among packages for zero-inflated generalized linear mixed modeling.Crossref | GoogleScholarGoogle Scholar |
Burnham, K. P., and D. R. Anderson. (2002). ‘Model selection and multimodel inference: a practical information-theoretic approach’, 2nd edn. (Springer-Verlag: New York).
Chaudhary, A., Pfister, S., and Hellweg, S. (2016). Spatially explicit analysis of biodiversity loss due to global agriculture, pasture and forest land use from a producer and consumer perspective. Environmental Science and Technology 50, 3928–3936.
| Spatially explicit analysis of biodiversity loss due to global agriculture, pasture and forest land use from a producer and consumer perspective.Crossref | GoogleScholarGoogle Scholar | 26914258PubMed |
Cunningham, S. C., Read, J., Baker, P. J., and Mac Nally, R. (2007). Quantitative assessment of stand condition and its relationship to physiological stress in stands of Eucalyptus camaldulensis (Myrtaceae. Australian Journal of Botany 55, 692–699.
| Quantitative assessment of stand condition and its relationship to physiological stress in stands of Eucalyptus camaldulensis (Myrtaceae.Crossref | GoogleScholarGoogle Scholar |
Cunningham, S. C., Mac Nally, R., Read, J., Baker, P. J., White, M., Thomson, J. R., and Griffioen, P. (2009). A robust technique for mapping vegetation condition across a major river system. Ecosystems 12, 207–219.
| A robust technique for mapping vegetation condition across a major river system.Crossref | GoogleScholarGoogle Scholar |
DEPI (2014). Action statement no. 62: Leadbeater’s possum Gymnobelideus leadbeateri. (Department of Environment and Primary Industries: Melbourne).
Françoso, R. D., Brandão, R., Nogueira, C. C., Salmona, Y. B., Machado, R. B., and Colli, G. R. (2015). Habitat loss and the effectiveness of protected areas in the Cerrado Biodiversity Hotspot. Natureza and Conservação 13, 35–40.
| Habitat loss and the effectiveness of protected areas in the Cerrado Biodiversity Hotspot.Crossref | GoogleScholarGoogle Scholar |
Glatthorn, J., and Beckschäfer, P. (2014). Standardizing the protocol for hemispherical photographs: accuracy assessment of binarization algorithms. PloS One 9, e111924.
| Standardizing the protocol for hemispherical photographs: accuracy assessment of binarization algorithms.Crossref | GoogleScholarGoogle Scholar | 25420014PubMed |
Goldingay, R. L. and Jackson, S. M. (2004). A review of the ecology of the Australian Petauridae. In ‘The biology of Australian possums and gliders’. (Eds R. Goldingay and S. Jackson) pp. 376–400. (Surrey Beatty & Sons: Sydney)
Goldingay, R. L., Quin, D. G., Talamo, O., and Mentiplay‐Smith, J. (2020). Nest box revealed habitat preferences of arboreal mammals in box‐ironbark forest. Ecological Management and Restoration 21, 131–142.
| Nest box revealed habitat preferences of arboreal mammals in box‐ironbark forest.Crossref | GoogleScholarGoogle Scholar |
Greet, J. (2015). The marked flooding tolerance of seedlings of a threatened swamp gum: implications for the restoration of critical wetland forests. Australian Journal of Botany 63, 669–678.
| The marked flooding tolerance of seedlings of a threatened swamp gum: implications for the restoration of critical wetland forests.Crossref | GoogleScholarGoogle Scholar |
Greet, J., Fischer, S., and Russell, K. (2020). Longer duration flooding reduces the growth and sexual reproductive efforts of a keystone wetland tree species. Wetlands Ecology and Management 28, 655–666.
| Longer duration flooding reduces the growth and sexual reproductive efforts of a keystone wetland tree species.Crossref | GoogleScholarGoogle Scholar |
Hansen, B. D., and Taylor, A. C. (2008). Isolated remnant or recent introduction? Estimating the provenance of Yellingbo Leadbeater's possums by genetic analysis and bottleneck simulation. Molecular Ecology 17, 4039–4052.
| Isolated remnant or recent introduction? Estimating the provenance of Yellingbo Leadbeater's possums by genetic analysis and bottleneck simulation.Crossref | GoogleScholarGoogle Scholar | 19238705PubMed |
Hansen, B. D., Harley, D. K. P., Lindenmayer, D. B., and Taylor, A. C. (2009). Population genetic analysis reveals a long‐term decline of a threatened endemic Australian marsupial. Molecular Ecology 18, 3346–3362.
| Population genetic analysis reveals a long‐term decline of a threatened endemic Australian marsupial.Crossref | GoogleScholarGoogle Scholar | 19694962PubMed |
Harley, D. (2015). The use of call imitation to establish territory occupancy by Leadbeater's possum (Gymnobelideus leadbeateri. Australian Mammalogy 37, 116–119.
| The use of call imitation to establish territory occupancy by Leadbeater's possum (Gymnobelideus leadbeateri.Crossref | GoogleScholarGoogle Scholar |
Harley, D. (2016). An overview of actions to conserve Leadbeater’s possum ‘Gymnobelideus leadbeateri’. The Victorian Naturalist 133, 85.
Harley, D. K. P. (2004a). A review of recent records of Leadbeater’s possum Gymnobelideus leadbeateri. In ‘The biology of Australian possums and gliders’. pp. 330–338. (Surrey Beatty & Sons: Sydney).
Harley, D. K. P. (2004b). Patterns of nest box use by Leadbeater’s possum Gymnobelideus leadbeateri: applications to research and conservation. In ‘The biology of Australian possums and gliders’. pp. 318–329. (Surrey Beatty & Sons: Sydney).
Harley, D. K. P. (2005). The life history and conservation of Leadbeater’s possum (Gymnobelideus leadbeateri) in lowland swamp forest. PhD thesis. Monash University, Melbourne.
Harley, D. K. P., and Lill, A. (2007). Reproduction in a population of the endangered Leadbeater's possum inhabiting lowland swamp forest. Journal of Zoology 272, 451–457.
| Reproduction in a population of the endangered Leadbeater's possum inhabiting lowland swamp forest.Crossref | GoogleScholarGoogle Scholar |
Harley, D. K. P., Worley, M. A., and Harley, T. K. (2005). The distribution and abundance of Leadbeater?s possum Gymnobelideus leadbeateri in lowland swamp forest at Yellingbo Nature Conservation Reserve. Australian Mammalogy 27, 7–15.
| The distribution and abundance of Leadbeater?s possum Gymnobelideus leadbeateri in lowland swamp forest at Yellingbo Nature Conservation Reserve.Crossref | GoogleScholarGoogle Scholar |
Henle, K., Davies, K. F., Kleyer, M., Margules, C., and Settele, J. (2004). Predictors of species sensitivity to fragmentation. Biodiversity and Conservation 13, 207–251.
| Predictors of species sensitivity to fragmentation.Crossref | GoogleScholarGoogle Scholar |
Kerley, G. I. H., Kowalczyk, R., and Cromsigt, J. P. G. M. (2012). Conservation implications of the refugee species concept and the European bison: king of the forest or refugee in a marginal habitat?. Ecography 35, 519–529.
| Conservation implications of the refugee species concept and the European bison: king of the forest or refugee in a marginal habitat?.Crossref | GoogleScholarGoogle Scholar |
Kuhn, M. and Wickham, H. (2019). rsample: general resampling infrastructure. R package version 0.0.4. Available at https://CRAN.R-project.org/package=rsample
Lentini, P. E., Stirnemann, I. A., Stojanovic, D., Worthy, T. H., and Stein, J. A. (2018). Using fossil records to inform reintroduction of the kakapo as a refugee species. Biological Conservation 217, 157–165.
| Using fossil records to inform reintroduction of the kakapo as a refugee species.Crossref | GoogleScholarGoogle Scholar |
Lindenmayer, D., and Meggs, R. (1996). Use of den trees by Leadbeater's possum (Gymnobelideus Leadbeateri. Australian Journal of Zoology 44, 625–638.
| Use of den trees by Leadbeater's possum (Gymnobelideus Leadbeateri.Crossref | GoogleScholarGoogle Scholar |
Lindenmayer, D. B., and Sato, C. (2018). Hidden collapse is driven by fire and logging in a socioecological forest ecosystem. Proceedings of the National Academy of Sciences 115, 5181–5186.
| Hidden collapse is driven by fire and logging in a socioecological forest ecosystem.Crossref | GoogleScholarGoogle Scholar |
Lindenmayer, D. B., Cunningham, R. B., Tanton, M. T., Nix, H. A., and Smith, A. P. (1991a). The conservation of arboreal marsupials in the montane ash forests of the Central Highlands of Victoria, south-east Australia: III. The habitat requirements of leadbeater's possum Gymnobelideus leadbeateri and models of the diversity and abundance of arboreal marsupials. Biological Conservation 56, 295–315.
| The conservation of arboreal marsupials in the montane ash forests of the Central Highlands of Victoria, south-east Australia: III. The habitat requirements of leadbeater's possum Gymnobelideus leadbeateri and models of the diversity and abundance of arboreal marsupials.Crossref | GoogleScholarGoogle Scholar |
Lindenmayer, D. B., Cunningham, R. B., Tanton, M. T., Smith, A. P., and Nix, H. A. (1991b). Characteristics of hollow-bearing trees occupied by arboreal marsupials in the montane ash forests of the Central Highlands of Victoria, south-east Australia. Forest Ecology and Management 40, 289–308.
| Characteristics of hollow-bearing trees occupied by arboreal marsupials in the montane ash forests of the Central Highlands of Victoria, south-east Australia.Crossref | GoogleScholarGoogle Scholar |
Lindenmayer, D. B., Blanchard, W., McBurney, L., Blair, D., Banks, S., Likens, G. E., Franklin, J. F., Laurance, W. F., Stein, J. A. R., and Gibbons, P. (2012). Interacting factors driving a major loss of large trees with cavities in a forest ecosystem. PloS one 7, e41864.
| Interacting factors driving a major loss of large trees with cavities in a forest ecosystem.Crossref | GoogleScholarGoogle Scholar | 23071486PubMed |
Lindenmayer, D. B., Foster, C. N., Westgate, M. J., Scheele, B. C., and Blanchard, W. (2020). Managing interacting disturbances: lessons from a case study in Australian forests. Journal of Applied Ecology 57, 1711–1716.
| Managing interacting disturbances: lessons from a case study in Australian forests.Crossref | GoogleScholarGoogle Scholar |
McClenachan, L., Ferretti, F., and Baum, J. K. (2012). From archives to conservation: why historical data are needed to set baselines for marine animals and ecosystems. Conservation Letters 5, 349–359.
| From archives to conservation: why historical data are needed to set baselines for marine animals and ecosystems.Crossref | GoogleScholarGoogle Scholar |
McMahon, A. R. G., and Franklin, D. C. (1993). The significance of mountain swap gum for helmeted honeyeater populations in the Yarra Valley. The Victorian Naturalist 110, 230–237.
McCoy, F. (1867). On a new genus of Phalanger. Annals and Magazine of Natural History 20, 287–288.
| On a new genus of Phalanger.Crossref | GoogleScholarGoogle Scholar |
Pearce, J., Burgman, M., and Franklin, D. (1994). Habitat selection by helmeted honeyeaters. Wildlife Research 21, 53–63.
| Habitat selection by helmeted honeyeaters.Crossref | GoogleScholarGoogle Scholar |
R Core Team (2020). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. Available at https://www.R-project.org/
Robinson, D. and Hayes, A. (2019). broom: convert statistical analysis objects into tidy tibbles package version 0.5.2. Available at https://CRAN.R-project.org/package=broom
Sammut, C., and G. I. Webb, (2010). Leave-one-out cross-validation. In ‘Encyclopedia of machine learning’. pp. 600–601. (Springer US: Boston, MA)
Simmonds, J. S., van Rensburg, B. J., and Maron, M. (2017). Non-random patterns of vegetation clearing and potential biases in studies of habitat area effects. Landscape Ecology 32, 729–743.
| Non-random patterns of vegetation clearing and potential biases in studies of habitat area effects.Crossref | GoogleScholarGoogle Scholar |
Smith, A. (1984). Diet of Leadbeaters possum, Gymnobelideus leadbeateri (Marsupialia). Wildlife Research 11, 265–273.
| Diet of Leadbeaters possum, Gymnobelideus leadbeateri (Marsupialia).Crossref | GoogleScholarGoogle Scholar |
Smith, A., and Lindenmayer, D. (1988). Tree hollow requirements of Leadbeater's possum and other possums and gliders in timber production ash forests of the Victorian central highlands. Wildlife Research 15, 347–362.
| Tree hollow requirements of Leadbeater's possum and other possums and gliders in timber production ash forests of the Victorian central highlands.Crossref | GoogleScholarGoogle Scholar |
Smith, A., Lindenmayer, D., Begg, R., Macfarlane, M., Seebeck, J., and Suckling, G. (1989). Evaluation of the stag-watching technique for census of possums and gliders in tall open forest. Wildlife Research 16, 575–580.
| Evaluation of the stag-watching technique for census of possums and gliders in tall open forest.Crossref | GoogleScholarGoogle Scholar |
Smith, A. P., Lindenmayer, D., and Suckling, G. (1985). The ecology and management of Leadbeater’s possum. Research report to World Wildlife Fund, University of New England, Armidale, NSW
Yugovic, J., and Mitchell, S. (2006). Ecological review of the Koo-Wee-Rup swamp and associated grasslands. The Victorian Naturalist 123, 323.
Zacks, G., Greet, J., Walsh, C. J., and Raulings, E. (2018). The flooding tolerance of two critical habitat-forming wetland shrubs, Leptospermum lanigerum and Melaleuca squarrosa, at different life history stages. Australian Journal of Botany 66, 500–510.
| The flooding tolerance of two critical habitat-forming wetland shrubs, Leptospermum lanigerum and Melaleuca squarrosa, at different life history stages.Crossref | GoogleScholarGoogle Scholar |
Zilko, J. P., Harley, D., Hansen, B., Pavlova, A., and Sunnucks, P. (2020). Accounting for cryptic population substructure enhances detection of inbreeding depression with genomic inbreeding coefficients: an example from a critically endangered marsupial. Molecular Ecology , .
| Accounting for cryptic population substructure enhances detection of inbreeding depression with genomic inbreeding coefficients: an example from a critically endangered marsupial.Crossref | GoogleScholarGoogle Scholar | 32627274PubMed |
