Demographic evaluation of translocating the threatened northern quoll to two Australian islands
Anthony D. Griffiths A B E , Brooke Rankmore A C , Kym Brennan A and John C. Z. Woinarski A B D
+ Author Affiliations
- Author Affiliations
A Department of Environment and Natural Resources, PO Box 496 Palmerston, NT 0831 Australia.
B Research Institute for the Environment and Livelihoods, Charles Darwin University, Casuarina, NT 0909, Australia.
C Greening Australia, PO Box 1, Berrimah, NT 0828, Australia.
D Threatened Species Recovery Hub, National Environmental Science Program, The University of Queensland, St Lucia, Qld 4072, Australia.
E Corresponding author. Email: tony.griffiths@nt.gov.au
Wildlife Research 44(3) 238-247 https://doi.org/10.1071/WR16165
Submitted: 2 September 2016 Accepted: 6 April 2017 Published: 1 May 2017
Abstract
Context: Translocation is widely used to help avoid extinction of species from threatening processes. A fundamental objective of translocation is to establish self-sustaining populations; estimating demographic parameters is critical to assessing success of these programs and can also be used to support future management actions.
Aims: We estimated demographic parameters to evaluate the success of translocating the northern quoll Dasyurus hallucatus to two islands (Astell and Pobassoo), in response to the threat posed by the introduced cane toad Rhinella marina on the Australian mainland.
Methods: We used capture–mark–recapture methods to monitor both populations at regular intervals from initial release in 2003 until 2009 and a one-off survey in 2014.
Key results: Relative abundance (trap success) increased exponentially in the first 4 years, declined, and then stabilised in subsequent years. The population of female northern quolls on Astell Island peaked in 2006 with an estimate of 3640 (95% CI 3022–4257), and on Pobassoo Island the peak was 2007 with 617 (95% CI 531–703) females. In 2014 the population had decreased to 2193 (95% CI 1920–2467) on Astell and 451 (95% CI 359–543) on Pobassoo. Apparent survival and body condition decreased significantly following the population peak, possibly related to density dependence.
Conclusion: Both populations of northern quolls reached their regulation phase after going through establishment and growth phases, which included exceeding carrying capacity. The pattern was similar between the populations.
Implications: Increased survival and recruitment at threat-free translocation sites contributes to successful establishment of self-sustaining populations.
References
Armstrong, D. P., and Reynolds, M. H. (2012). Modelling reintroduced populations: the state of the art and future directions. In ‘Reintroduction Biology: Integrating Science and Management’. (Eds J. Ewen, D. P. Armstrong and K. A. Parker.) pp. 165–222. (John Wiley & Sons Ltd: Chichester, UK.)Armstrong, D. P., and Seddon, P. J. (2008). Directions in reintroduction biology. Trends in Ecology & Evolution 23, 20–25.
| Directions in reintroduction biology.Crossref | GoogleScholarGoogle Scholar |
Armstrong, D. P., Davidson, R. S., Perrott, J. K., Roygard, J., and Buchanan, L. (2005). Density-dependent population growth in a reintroduced population of North Island saddlebacks. Journal of Animal Ecology 74, 160–170.
| Density-dependent population growth in a reintroduced population of North Island saddlebacks.Crossref | GoogleScholarGoogle Scholar |
Armstrong, D. P., Hayward, M., Moro, D., and Seddon, P. (Eds) (2015). ‘Advances in Reintroduction Biology of Australian and New Zealand Fauna.’ (CSIRO Publishing: Melbourne.)
Braithwaite, R. W., and Griffiths, A. D. (1994). Demographic variation and range contraction in the northern quoll, Dasyurus hallucatus (Marsupialia: Dasyuridae). Wildlife Research 21, 203–217.
| Demographic variation and range contraction in the northern quoll, Dasyurus hallucatus (Marsupialia: Dasyuridae).Crossref | GoogleScholarGoogle Scholar |
Brook, B. W., and Whitehead, P. J. (2005). Exclosures as a means of controlling the impact of cane toads. In ‘A Review of the Impact and Control of Cane Toads in Australia with Recommendations for Future Research and Management Approaches’. (Eds R. Taylor and G. Edwards.) pp. 25–33. A report to the Vertebrate Pests Committee from the National Cane Toad Taskforce, Canberra.
Burbidge, A. A., and McKenzie, N. L. (1989). Patterns in the modern decline of Western Australia’s vertebrate fauna: causes and conservation implications. Biological Conservation 50, 143–198.
| Patterns in the modern decline of Western Australia’s vertebrate fauna: causes and conservation implications.Crossref | GoogleScholarGoogle Scholar |
Burnett, S. (1997). Colonizing cane toads cause population declines in native predators: reliable anecdotal information and management implications. Pacific Conservation Biology 3, 65–72.
| Colonizing cane toads cause population declines in native predators: reliable anecdotal information and management implications.Crossref | GoogleScholarGoogle Scholar |
Burnham, K. P., and Anderson, D. R. (2002) ‘Model Selection and Multimodel Inference: a Practical Information–Theoretic Approach.’ 2nd edn. (Springer: New York.)
Cardoso, M. J., Eldridge, M. D. B., Oakwood, M., Rankmore, B., Sherwin, W. B., and Firestone, K. B. (2009). Effects of founder events on the genetic variation of translocated island populations: implications for conservation management of the northern quoll. Conservation Genetics 10, 1719–1733.
| Effects of founder events on the genetic variation of translocated island populations: implications for conservation management of the northern quoll.Crossref | GoogleScholarGoogle Scholar |
Chaloupka, M., and Limpus, C. (2001). Trends in the abundance of sea turtles resident in southern Great Barrier Reef waters. Biological Conservation 102, 235–249.
| Trends in the abundance of sea turtles resident in southern Great Barrier Reef waters.Crossref | GoogleScholarGoogle Scholar |
Chatto, R. (2003). ‘The Distribution and Status of Shorebirds around the Coast and Coastal Wetlands of the Northern Territory.’ (Parks and Wildlife Commission of the Northern Territory: Palmerston, NT.)
Chatto, R., and Baker, B. (2008) ‘The Distribution and Status of Marine Turtle Nesting in the Northern Territory.’ (Parks and Wildlife Services of the Northern Territory: Palmerston, NT.)
Clayton, J. A., Pavey, C. R., Vernes, K., and Tighe, M. (2014). Review and analysis of Australian macropod translocations 1969–2006. Mammal Review 44, 109–123.
| Review and analysis of Australian macropod translocations 1969–2006.Crossref | GoogleScholarGoogle Scholar |
Converse, S. J., Moore, C. T., and Armstrong, D. P. (2013). Demographics of reintroduced populations: estimation, modeling, and decision analysis. The Journal of Wildlife Management 77, 1081–1093.
| Demographics of reintroduced populations: estimation, modeling, and decision analysis.Crossref | GoogleScholarGoogle Scholar |
Cooch, E. G., and White, G. C. (2014). ‘Program MARK: a Gentle Introduction.’ (Cornell University and Colorado State University: Ithaca, NY.)
Fischer, J., and Lindenmayer, D. (2000). An assessment of the published results of animal relocations. Biological Conservation 96, 1–11.
| An assessment of the published results of animal relocations.Crossref | GoogleScholarGoogle Scholar |
Gaillard, J.-M., Festa-Bianchet, M., and Yoccoz, N. G. (1998). Population dynamics of large herbivores: variable recruitment with constant adult survival. Trends in Ecology & Evolution 13, 58–63.
| Population dynamics of large herbivores: variable recruitment with constant adult survival.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BC3M7itFyhtw%3D%3D&md5=9615c896910034452ffa24954c3d1ce2CAS |
Griffith, B., Scott, J. M., Carpenter, J. W., and Reed, C. (1989). Translocation as a species conservation tool: status and strategy. Science 245, 477–480.
| Translocation as a species conservation tool: status and strategy.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BC3cvitlKqsA%3D%3D&md5=44da5118a850227541f32ec9b2bcbcdaCAS |
Griffiths, A. D., and Brook, B. W. (2015). Fire impacts recruitment more than survival of small mammals in a tropical savanna. Ecosphere 6, art99.
| Fire impacts recruitment more than survival of small mammals in a tropical savanna.Crossref | GoogleScholarGoogle Scholar |
Griffiths, A. D., Garnett, S. T., and Brook, B. W. (2015). Fire frequency matters more than fire size: testing the pyrodiversity-biodiversity paradigm for at-risk small mammals in an Australian tropical savanna. Biological Conservation 186, 337–346.
| Fire frequency matters more than fire size: testing the pyrodiversity-biodiversity paradigm for at-risk small mammals in an Australian tropical savanna.Crossref | GoogleScholarGoogle Scholar |
Hone, J., Duncan, R. P., and Forsyth, D. M. (2010). Estimates of maximum annual population growth rates (rm) of mammals and their application in wildlife management. Journal of Applied Ecology 47, 507–514.
| Estimates of maximum annual population growth rates (rm) of mammals and their application in wildlife management.Crossref | GoogleScholarGoogle Scholar |
IUCN/SSC (2013). ‘Guidelines for Reintroductions and Other Conservation Translocations.’ (IUCN Species Survival Commission: Gland, Switzerland.)
Johnson, C. (2006) ‘Australia’s Mammal Extinctions: a 50 000 Year History.’ (Cambridge University Press: Port Melbourne.)
Kearney, M., Phillips, B. L., Tracy, C. R., Christian, K. A., Betts, G., and Porter, W. P. (2008). Modelling species distributions without using species distributions: the cane toad in Australia under current and future climates. Ecography 31, 423–434.
| Modelling species distributions without using species distributions: the cane toad in Australia under current and future climates.Crossref | GoogleScholarGoogle Scholar |
Lebreton, J. D., Burnham, K. P., Clobert, J., and Anderson, D. R. (1992). Modeling survival and testing biological hypotheses using marked animals: a unified approach with case studies. Ecological Monographs 62, 67–118.
| Modeling survival and testing biological hypotheses using marked animals: a unified approach with case studies.Crossref | GoogleScholarGoogle Scholar |
Lindenmayer, D. B., Clark, T. W., Lacy, R. C., and Thomas, V. C. (1993). Population viability analysis as a tool in wildlife conservation policy: with reference to Australia. Environmental Management 17, 745–758.
| Population viability analysis as a tool in wildlife conservation policy: with reference to Australia.Crossref | GoogleScholarGoogle Scholar |
Magdalena Wolf, C., Garland, T., and Griffith, B. (1998). Predictors of avian and mammalian translocation success: reanalysis with phylogenetically independent contrasts. Biological Conservation 86, 243–255.
| Predictors of avian and mammalian translocation success: reanalysis with phylogenetically independent contrasts.Crossref | GoogleScholarGoogle Scholar |
McCarthy, M. A., Armstrong, D. P., and Runge, M. C. (2012). Adaptive management of reintroduction. In ‘Reintroduction Biology: Integrating Science and Management’. (Eds J. G. Ewen, D. P. Armstrong, K. A. Parker and P. J. Seddon.) pp. 256–289. (Wiley-Blackwell: Oxford.)
Morris, K., Page, M., Kay, R., Renwick, J., Desmond, A., Comer, S., Burbidge, A., Kuchling, G., and Sims, C. (2015). Forty years of fauna translocations in Western Australia: lessons learned. In ‘Advances in Reintroduction Biology of Australian and New Zealand Fauna’. (Eds D. Armstrong, M. W. Hayward, D. Moro and P. J. Seddon.) pp. 217–235. (CSIRO Publishing: Melbourne.)
O’Donnell, S., Webb, J. K., and Shine, R. (2010). Conditioned taste aversion enhances the survival of an endangered predator imperilled by a toxic invader. Journal of Applied Ecology 47, 558–565.
| Conditioned taste aversion enhances the survival of an endangered predator imperilled by a toxic invader.Crossref | GoogleScholarGoogle Scholar |
Oakwood, M. (2000). Reproduction and demography of the northern quoll, Dasyurus hallucatus, in the lowland savanna of northern Australia. Australian Journal of Zoology 48, 519–539.
| Reproduction and demography of the northern quoll, Dasyurus hallucatus, in the lowland savanna of northern Australia.Crossref | GoogleScholarGoogle Scholar |
Peig, J., and Green, A. J. (2009). New perspectives for estimating body condition from mass/length data: the scaled mass index as an alternative method. Oikos 118, 1883–1891.
| New perspectives for estimating body condition from mass/length data: the scaled mass index as an alternative method.Crossref | GoogleScholarGoogle Scholar |
Peig, J., and Green, A. J. (2010). The paradigm of body condition: a critical reappraisal of current methods based on mass and length. Functional Ecology 24, 1323–1332.
| The paradigm of body condition: a critical reappraisal of current methods based on mass and length.Crossref | GoogleScholarGoogle Scholar |
Pérez, I., Anadon, J., Diaz, M., Nicola, G. G., Tella, J. L., and Gimenez, A. (2012). What is wrong with current translocations? A review and a decision-making proposal. Frontiers in Ecology and the Environment 10, 494–501.
| What is wrong with current translocations? A review and a decision-making proposal.Crossref | GoogleScholarGoogle Scholar |
Pinheiro, J. C., and Bates, D. M. (2000) ‘Mixed Effects Models in S and S-PLUS.’ (Springer: New York.)
Pradel, R. (1996). Utilization of capture-mark-recapture for the study of recruitment and population growth rate. Biometrics 52, 703–709.
| Utilization of capture-mark-recapture for the study of recruitment and population growth rate.Crossref | GoogleScholarGoogle Scholar |
Robert, A., Colas, B., Guigon, I., Kerbiriou, C., Mihoub, J.-B., Saint Jalme, M., and Sarrazin, F. (2015). Defining reintroduction success using IUCN criteria for threatened species: a demographic assessment. Animal Conservation 18, 397–406.
| Defining reintroduction success using IUCN criteria for threatened species: a demographic assessment.Crossref | GoogleScholarGoogle Scholar |
Sarrazin, F., and Barbault, R. (1996). Reintroduction: challenges and lessons for basic ecology. Trends in Ecology & Evolution 11, 474–478.
| Reintroduction: challenges and lessons for basic ecology.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BC3M7itFGmtg%3D%3D&md5=1fc002200355c9acbae8cfbd7aa351d5CAS |
Sattler, P., and Creighton, C. (2002). Australian Terrestrial Biodiversity Assessment 2002. National Land and Water Resource Audit, Canberra.
Schmitt, L. H., Bradley, A. J., Kemper, C. M., Kitchener, D. J., Humphries, W. F., and How, R. A. (1989). Ecology and physiology of the northern quoll, Dasyurus hallucatus (Marsupialia, Dasyuridae), at Mitchell Plateau, Kimberley, Western Australia. Journal of Zoology 217, 539–558.
| Ecology and physiology of the northern quoll, Dasyurus hallucatus (Marsupialia, Dasyuridae), at Mitchell Plateau, Kimberley, Western Australia.Crossref | GoogleScholarGoogle Scholar |
Seddon, P. J., Armstrong, D. P., and Maloney, R. F. (2007). Developing the science of reintroduction biology. Conservation Biology 21, 303–312.
| Developing the science of reintroduction biology.Crossref | GoogleScholarGoogle Scholar |
Sheean, V. A., Manning, A. D., and Lindenmayer, D. B. (2012). An assessment of scientific approaches towards species relocations in Australia. Austral Ecology 37, 204–215.
| An assessment of scientific approaches towards species relocations in Australia.Crossref | GoogleScholarGoogle Scholar |
Shier, D. M. (2015). Developing a standard for evaluating reintroduction success using IUCN Red List indices. Animal Conservation 18, 411–412.
| Developing a standard for evaluating reintroduction success using IUCN Red List indices.Crossref | GoogleScholarGoogle Scholar |
Shine, R. (2010). The ecological impact of invasive cane toads (Bufo marinus) in Australia. The Quarterly Review of Biology 85, 253–291.
| The ecological impact of invasive cane toads (Bufo marinus) in Australia.Crossref | GoogleScholarGoogle Scholar |
Short, J., and Smith, A. (1994). Mammal decline and recovery in Australia. Journal of Mammalogy 75, 288–297.
| Mammal decline and recovery in Australia.Crossref | GoogleScholarGoogle Scholar |
Smith, A. P., and Quin, D. G. (1996). Patterns and causes of extinction and decline in Australian conilurine rodents. Biological Conservation 77, 243–267.
| Patterns and causes of extinction and decline in Australian conilurine rodents.Crossref | GoogleScholarGoogle Scholar |
Sutherst, R. W., Floyd, R. B., and Maywald, G. F. (1996). The potential geographical distribution of the cane toad, Bufo marinus L in Australia. Conservation Biology 10, 294–299.
| The potential geographical distribution of the cane toad, Bufo marinus L in Australia.Crossref | GoogleScholarGoogle Scholar |
White, G. C., and Burnham, K. P. (1999). Program MARK: survival estimation from populations of marked animals. Bird Study 46, S120–S138.
| Program MARK: survival estimation from populations of marked animals.Crossref | GoogleScholarGoogle Scholar |
Williams, B. K., Conroy, M. J., and Nichols, J. D. (2002) ‘Analysis and Management of Animal Populations: Modeling, Estimation, and Decision Making.’ (Academic Press: San Diego.)
Woinarski, J. C. Z., and Braithwaite, R. W. (1990). Conservation foci for Australian birds and mammals. Search 21, 65–68.
Woinarski, J., Reichel, H., and Andersen, A. (1998). The distribution of ants on the Wessel and English Company Islands, in the seasonal tropics of Australia’s Northern Territory. Australian Journal of Zoology 46, 557–579.
| The distribution of ants on the Wessel and English Company Islands, in the seasonal tropics of Australia’s Northern Territory.Crossref | GoogleScholarGoogle Scholar |
Woinarski, J., Horner, P., Fisher, A., Brennan, K., Lindner, D., Gambold, N., Chatto, R., and Morris, I. (1999a). Distributional patterning of terrestrial herpetofauna on the Wessel and English Company Island groups, northeastern Arnhem Land, Northern Territory, Australia. Australian Journal of Ecology 24, 60–79.
| Distributional patterning of terrestrial herpetofauna on the Wessel and English Company Island groups, northeastern Arnhem Land, Northern Territory, Australia.Crossref | GoogleScholarGoogle Scholar |
Woinarski, J. C. Z., Palmer, C., Fisher, A., Southgate, R., Masters, P., and Brennan, K. (1999b). Distributional patterning of mammals on the Wessel and English Company islands, Arnhem Land, Northern Territory, Australia. Australian Journal of Zoology 47, 87–111.
| Distributional patterning of mammals on the Wessel and English Company islands, Arnhem Land, Northern Territory, Australia.Crossref | GoogleScholarGoogle Scholar |
Woinarski, J., Brennan, K., Cowie, I., Fisher, A., Latz, P., and Russell-Smith, J. (2000). Vegetation of the Wessel and English Company Islands, North-eastern Arnhem Land, Northern Territory, Australia. Australian Journal of Botany 48, 115–141.
| Vegetation of the Wessel and English Company Islands, North-eastern Arnhem Land, Northern Territory, Australia.Crossref | GoogleScholarGoogle Scholar |
Woinarski, J., Fisher, A., Brennan, K., Morris, I., and Chatto, R. (2001). Patterns of bird species richness and composition on islands off Arnhem Land, Northern Territory, Australia. Austral Ecology 26, 1–13.
Woinarski, J., Ward, S., Mahney, T., Bradley, J., Brennan, K., Ziembicki, M., and Fisher, A. (2011). The mammal fauna of the Sir Edward Pellew island group, Northern Territory, Australia: refuge and death-trap. Wildlife Research 38, 307–322.
| The mammal fauna of the Sir Edward Pellew island group, Northern Territory, Australia: refuge and death-trap.Crossref | GoogleScholarGoogle Scholar |
Woinarski, J., Burbidge, A., and Harrison, P. (2014) ‘Action Plan for Australian Mammals 2012.’ (CSIRO Publishing: Canberra.)
