A framework for assessing readiness for tiger Panthera tigris reintroduction: a case study from eastern Cambodia

Gray, Thomas N. E.; Crouthers, Rachel; Krishnamurthy, R.; Vattakaven, Joseph; Borah, Jimmy; Pasha, M.K.S.; Lim, Thona; Channa, Phan; Singh, Rohit; Long, Barney; Chapman, S.; Keo, O.; Baltzer, M.

doi:10.1007/s10531-017-1365-1

Cited by 34 publications

(28 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We used Monte Carlo simulation to propagate uncertainty around our density estimates and illustrate how such information could be presented to conservation decision makers. We showed that there is currently a low probability (<25%) that the 1,500-km 2 core area of SCNP supports sufficient prey for a tiger population of at least 25 adult tigers (Gray, Crouthers, et al, 2017b). There is a much higher probability (>80%) that the landscape could currently support a founder population of five tigers (Figure 1).…”

Section: Discussionmentioning

confidence: 86%

“…Consistent relationships exist between prey and carnivore abundance allowing the calculation of carnivore carrying capacity based on prey densities (Carbone & Gittleman, 2002). The following formula has been used to estimate tiger carrying capacity for assessing site suitability for tiger reintroduction in central Asia (Chestin et al, 2017) and Cambodia (Gray, Crouthers, et al, 2017b):…”

Section: Estimating Tiger Carrying Capacitymentioning

confidence: 99%

“…In Cambodia, tiger were extirpated in 2007 and ambitious plans for reintroduction have been developed for two conservation landscapes: the Cardamom Rainforest and Eastern Plains (Gray, Baltzer, Gopal, & Seng, 2017a). A critical factor determining a site's tiger carrying capacity, and hence suitability for reintroduction, is the density of prey (Karanth, Nichols, Kumar, Link, & Hines, 2004), with a recent study suggesting sufficient prey for 25 adult tigers as a necessary prerequire for reintroduction (Gray, Crouthers, et al, 2017b). However, estimates of tiger prey densities will be uncertain.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Conservation decision‐making under uncertainty: Identifying when to reintroduce tiger Panthera tigris to Cambodia

Gray¹,

Grainger

Grosu³

2020

Conservat Sci and Prac

Self Cite

View full text Add to dashboard Cite

Conservationists need to present biological monitoring data to decision makers in a way which clearly represents uncertainty. Providing results in terms of the probability of a hypothesis being true may have greater utility for decision-making than traditionally used frequentist statistical approaches. Here, we demonstrate such an approach with regard to assessing the suitability of the Cardamom Rainforest Landscape, Cambodia for Panthera tigris (tiger) reintroduction. We estimated the density of tiger prey in the core of the landscape using the Random Encounter Model from camera-trap data and used Monte Carlo simulation to prorogate uncertainty around our model parameter estimates. This suggests there is currently a low probability that the core area of the landscape supports sufficient prey for a population of 25 adult tigers and that significant prey recovery is thus required prior to any reintroduction into the landscape. The Random Encounter Model contains a number of assumptions and we stress our main purpose is to illustrate an approach to incorporating uncertainty into conservation decision-making rather than providing robust estimation of current tiger prey densities in the Cardamom Rainforest Landscape. Our approach has wide utility for conveying species monitoring information to conservation planners in a simple to understand fashion.

show abstract

Section: Discussionmentioning

confidence: 86%

Section: Estimating Tiger Carrying Capacitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Conservation decision‐making under uncertainty: Identifying when to reintroduce tiger Panthera tigris to Cambodia

Gray¹,

Grainger

Grosu³

2020

Conservat Sci and Prac

Self Cite

View full text Add to dashboard Cite

show abstract

“…Three sites have attained CA|TS Approved status (Chitwan National Park, Nepal, Sikhote-Alin Nature Reserve, Russia and Lansdowne Forest Division, India) and currently (as of June 2018) 18 dossiers are pending final approval. CA|TS has also been used for assessing the readiness of tiger reintroduction in Cambodia (Gray, et al, 2017) [23].…”

Section: Resultsmentioning

confidence: 99%

Setting and Implementing Standards for Management of Wild Tigers

Pasha¹,

Dudley

Stolton

et al. 2018

Land

View full text Add to dashboard Cite

Tiger numbers have collapsed so dramatically that conservationists are adopting a strategy of securing populations in priority conservation landscapes. This includes improving management effectiveness in these sites. The Conservation Assured|Tiger Standards (CA|TS) are designed to help ensure effectiveness and provide a benchmark against which to measure progress. CA|TS is a distillation of best practice and a roadmap to management effectiveness, linking management to expert-driven standards covering all aspects of management, including those which are tiger-specific (monitoring, maintenance of prey, control of poaching). Sites are audited against a set of standards and if met, are accredited as CA|TS Approved. We describe CA|TS in the context of tiger conservation, describe the evolution and philosophy of the system and consider its application across the tiger range, before drawing on lessons learned from 5 years of development. Important benefits include the independence of CA|TS from existing governmental or NGO institutions, the emphasis on regional governance and the existence of active support groups. Conversely, the participatory approach has slowed implementation. CA|TS remains more attractive to well managed sites than to sites that are struggling, although building capacity in the latter is its key aim. The close connections between people working on tiger conservation make some aspects of independent assessment challenging. Finally, if CA|TS is to succeed in its long term aims, it needs to go hand in hand with secure and adequate funding to increase management capacity in many tiger conservation areas.

show abstract

“…It was also found that the release site had no influence on home range or mate selection (Sarkar et al, 2016), but they tend to avoid mating with genetically close conspecifics (Reddy et al, 2016). The successful tiger reintroduction in PTR has provided scientific and management lessons for planning and up-scaling such recovery efforts in other parts of tiger range countries as well (Gray et al, 2017).…”

Section: Mammalsmentioning

confidence: 99%

Global reintroduction perspectives: 2018. Case studies from around the globe

Soorae¹

2018

View full text Add to dashboard Cite

The designation of geographical entities in this book, and the presentation of the material, do not imply the expression of any opinion whatsoever on the part of IUCN or any of the funding organizations concerning the legal status of any country, territory, or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries. The views expressed in this publication do not necessarily reflect those of IUCN.

show abstract

A framework for assessing readiness for tiger Panthera tigris reintroduction: a case study from eastern Cambodia

Cited by 34 publications

References 52 publications

Conservation decision‐making under uncertainty: Identifying when to reintroduce tiger Panthera tigris to Cambodia

Conservation decision‐making under uncertainty: Identifying when to reintroduce tiger Panthera tigris to Cambodia

Setting and Implementing Standards for Management of Wild Tigers

Global reintroduction perspectives: 2018. Case studies from around the globe

Contact Info

Product

Resources

About