Multi-scale patterns of habitat use by re-introduced mammals: A case study using medium-sized marsupials

Finlayson, Graeme; Vieira, Emerson M.; Priddel, David; Wheeler, R. G.; Bentley, Joss; Dickman, Chris R.

doi:10.1016/j.biocon.2007.10.008

Cited by 42 publications

(27 citation statements)

References 43 publications

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“…It is likely that there are interactions between the terms used in the model (e.g., invasive species control is invariably required in Australia prior to reintroductions; Finlayson et al 2008). Invasive species control may reduce threats, but the results from this study suggest threatened species are unable to naturally reinvade sites where invasive species control has occurred, leading to a requirement for reintroduction to occur in association with invasive species control.…”

Section: Discussioncontrasting

confidence: 45%

Using the IUCN Red List to determine effective conservation strategies

Hayward

2011

Biodivers Conserv

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Threatened species lists continue to grow while the world's governments fail to meet biodiversity conservation goals. Clearly, we are failing in our attempts to conserve biodiversity. Yet 37 mammal species genuinely improved in status in the 2009 IUCN Red List, suggesting there are ways to successfully conserve biodiversity. Here, I compare the threats and conservation actions (proposed and implemented) by the expert assessors of the Red List of improving species to a further 144 declining mammal species to determine whether specific threats were more easily remedied, and whether certain conservation actions were more successful than others. Declining species were faced with different threatening processes to mammals improving in status suggesting some threats were easier to treat (e.g. hunting) than others (climate change, invasive species). Declining species had different proposed and implemented conservation actions than improving species suggesting some actions are more successful than others. Threatened species were invariably found in conservation areas, suggesting protected area creation alone is not an overly successful strategy for species at risk of extinction. Conservation actions were more frequently implemented for improving than declining species suggesting active conservation is effective in improving the status of biodiversity. There were significant differences between proposed and implemented conservation actions suggesting some actions are easier to implement than others. Reintroduction, captive breeding and hunting restriction were more effective in conserving mammals than site creation and invasive species 123Biodivers Conserv (2011) 20:2563-2573 DOI 10.1007 control. These findings highlight effective conservation actions for mammals worldwide and allow the rationalisation of threat mitigation measures to ensure economically justifiable biodiversity conservation strategies.

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Section: Discussioncontrasting

confidence: 45%

Using the IUCN Red List to determine effective conservation strategies

Hayward

2011

Biodivers Conserv

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“…Both semi-wild populations sampled in this study (SW1and SW2) were re-introduced within predator-proof fenced reserves, and play critical roles in the National Recovery Plan for the bilby (Pavey 2006;Finlayson et al 2008). Unfortunately, prior to sampling at the SW1, the predator-proof fence had been compromised by recurrent rains that caused corrosion to the fencing.…”

Section: Discussionmentioning

confidence: 95%

“…Greater bilbies were reintroduced within a fenced area (8,000 ha) between 2004 and 2005.A total of 2,103 individual bilbies were residing in the fenced area at the Sanctuary (Finlayson et al 2008;AWC 2012). Bilby fecal samples were collected within 210 ha area of the fenced area, which also contained bridled nail-tail wallaby (Onychogalea fraenata).…”

Section: Methodsmentioning

confidence: 99%

Monitoring physiological stress in semi-free ranging populations of an endangered Australian marsupial, the Greater Bilby (Macrotis lagotis)

2014

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Rapid and reliable physiological evaluation of stress is necessary for understanding the potential impacts of environmental changes on managed populations of threatened mammals. In situ populations of Australia's iconic marsupial, the greater bilby (Macrotis lagotis), are nearing extinction due to the impacts of competition and predation by feral animals and unpredictable climatic events (summer heat waves). In this study, we focussed our aim to identify a non-invasive method to measure adrenal activity in the species and also to identify potential factors that should be considered when comparing physiological stress in semi-free ranging populations of the species. We validated an enzyme immunoassay (EIA) for detecting fecal cortisol metabolites (FCM) from fresh fecal pellets taken from bilbies within four captive sites and two semi-free ranging populations around Queensland and New South Wales, Australia. Our FCM EIA successfully detected the 'raise and fall' pattern of FCM levels within 3 days of exogenous adrenocorticotropic hormone (ACTH) challenge. Mean FCM levels differed significantly between the captive sites and between sexes. All male bilbies grouped outdoor in captivity expressed the highest mean FCM level in comparison to all captive males that were housed individually or as groups indoors. Also, semi-free ranging bilbies expressed higher mean FCM levels than the captive bilbies. Overall, our study successfully validated a non-invasive tool for monitoring physiological stress in the greater bilby. In the future, it will be worthwhile to consider factors such as housing conditions, sex and location when comparing the adrenal sensitivity to environmental changes, to help evaluate the success of management interventions (such as predator free enclosures) and support the survival of the species.

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“…forage nocturnally for insects in structurally complex terrestrial microhabitats (Stokes et al 2004;Wilson and Aberton 2006;Finlayson et al 2008). Abundance of S. griseoventer was related to changes in the canopy of E. wandoo, but, surprisingly, no links were seen with terrestrial microhabitat variables.…”

Section: Antechinus Flavipes Individualsmentioning

confidence: 89%

Does woodland condition influence the diversity and abundance of small mammal communities?

et al. 2014

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Abstract. Loss of mammal species in Australia in the last 200 years has been attributed to many factors including habitat removal and altered fire regimes. Decline in tree condition could contribute further to the ongoing decline of mammals. Eucalyptus wandoo trees are currently undergoing a decline in condition that can result in a loss of canopy and other changes to the habitat. This paper examines the relationships between E. wandoo tree condition, habitat characteristics and small mammal species richness and abundance. Live-capture trapping was conducted at 24 E. wandoo sites at Dryandra State Forest and Wandoo Conservation Park, Western Australia. Condition and microhabitat variables of E. wandoo were recorded for each site. Generalised additive mixed models revealed a range of habitat and tree condition characteristics that influenced small mammal abundance and species richness, including site litter cover, crown dieback, understorey vegetation cover and tree density. The availability of coarse woody debris played a large role in explaining the abundance of Cercartetus concinnus and Antechinus flavipes, along with other microhabitat and tree condition variables, such as tree leaf litter and crown dieback. Epicormic growth, crown density and the distance to the drift fence from E. wandoo trees were the common variables in the best model for the abundance of Sminthopsis griseoventer. The decline in condition of E. wandoo and the subsequent modifications to the microhabitat are correlated with changes in the small mammal community. A better understanding of how the decline of E. wandoo impacts small mammal communities could improve management practices in E. wandoo woodlands.

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Multi-scale patterns of habitat use by re-introduced mammals: A case study using medium-sized marsupials

Cited by 42 publications

References 43 publications

Using the IUCN Red List to determine effective conservation strategies

Using the IUCN Red List to determine effective conservation strategies

Monitoring physiological stress in semi-free ranging populations of an endangered Australian marsupial, the Greater Bilby (Macrotis lagotis)

Does woodland condition influence the diversity and abundance of small mammal communities?

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