Rewilding the tropics, and other conservation translocations strategies in the tropical<scp>A</scp>sia‐<scp>P</scp>acific region

Louys, Julien; Corlett, Richard T.; Price, Gilbert J.; Hawkins, Stuart; Piper, Philip J.

doi:10.1002/ece3.1287

Cited by 28 publications

(24 citation statements)

References 95 publications

(182 reference statements)

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“…Other forms of ‘rewilding’, involving seed dispersers or herbivores, also have a role to play in managing revegetation trajectories (Louys et al . ; Galetti et al . ).…”

Section: Fauna‐mediated Processes That Drive Revegetation Dynamicsmentioning

confidence: 98%

“…There is potential that top-down management actions, such as encouraging or re-establishing apex carnivores that are currently persecuted or otherwise threatened, could be a useful means of increasing tree recruitment, through suppression of mammalian herbivores (Ripple et al 2014). Other forms of 'rewilding', involving seed dispersers or herbivores, also have a role to play in managing revegetation trajectories (Louys et al 2014;Galetti et al 2017). These ideas provide a fertile topic for future research and experimentation in sites undergoing vegetation restoration following retirement from agricultural uses.…”

Section: Targetin G F Auna To Achieve Vegetation Restorationmentioning

confidence: 99%

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Fauna as passengers and drivers in vegetation restoration: A synthesis of processes and evidence

Catterall¹

2018

Eco Management Restoration

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Summary Efforts to restore terrestrial woody ecosystems to former agricultural land are typically based on plant‐focused actions, often neglecting fauna. However, the processes that maintain or restore the health and integrity of these ecosystems involve many animal–plant interactions. Here, I synthesise information about these relationships and the implications for revegetation practice. Fauna have often been viewed as passengers, responding passively to plant‐focused revegetation. This view involves two surrogacy assumptions: first, that vegetation attributes can indicate habitat sufficiency for fauna; second, that animals will be capable of dispersing to the restored habitat and of establishing populations there. Habitat sufficiency depends on how resources such as food and nest sites can be indicated by vegetation attributes and how they interact with an animal's species‐specific requirements. Dispersal and establishment depend on proximity to source populations in habitat elsewhere, the type of intervening habitat and the intrinsic mobility of different species. Evidence about the effects of age, revegetation type and spatial context in relation to animal communities indicates that it can often be invalid to assume vegetation surrogacy. Fauna can also drive the developmental trajectories of floristic diversity and composition during revegetation, because animal–plant interactions frequently mediate life‐history transitions that determine seedling recruitment. Frugivore‐mediated seed dispersal is the best studied, but animals also directly influence early‐stage tree recruitment, especially through their roles in seed predation, seedling herbivory and indirectly through top‐down cascades that include large carnivores. These processes have been insufficiently recognised or studied, although some recent work highlights their significance. Intervening to alter abundances of functionally important animals could be useful in accelerating the redevelopment of woody vegetation. Further research is needed to clarify animals’ roles as both passengers and drivers during revegetation, especially manipulative experiments and innovative restoration trials, in which animals and plants are considered together from the outset.

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“…Other forms of ‘rewilding’, involving seed dispersers or herbivores, also have a role to play in managing revegetation trajectories (Louys et al . ; Galetti et al . ).…”

Section: Fauna‐mediated Processes That Drive Revegetation Dynamicsmentioning

confidence: 98%

Section: Targetin G F Auna To Achieve Vegetation Restorationmentioning

confidence: 99%

Fauna as passengers and drivers in vegetation restoration: A synthesis of processes and evidence

Catterall¹

2018

Eco Management Restoration

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“…), but other authors have been discussing for other ecosystems (Louys et al . , Sandom et al . , Corlett ).…”

Section: Potential Candidates For Refaunation Projects In Neotropicalmentioning

confidence: 99%

“…Here, we suggest a list of potential candidates for trophic rewilding for Atlantic Forest (Table 1; Fig. 1), but other authors have been discussing for other ecosystems (Louys et al 2014, Sandom et al 2013, Corlett 2016. For each species, the expected ecological benefits must be weighed locally against the ecological and economic risks and the chances of failure, but continuous monitoring is necessary.…”

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confidence: 99%

Reversing defaunation by trophic rewilding in empty forests

et al. 2016

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“…al (2015) created a Maxent habitat suitability model (Phillips and Dudík 2008) for Tasmanian devils on the Australian mainland trained on contemporary occurrence data from Tasmania. Before the arrival of dingoes, devils were widely distributed across Australia, not just constrained to the south-east corner (Dawson 1982, Louys et al 2014). The SDM in Hunter et.…”

Section: Introductionmentioning

confidence: 99%

Conserving Australia's predator-threatened mammals

Ringma¹

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Australian mammals are amongst the most threatened in the world. Predation by invasive cats and foxes has driven many species to extinction, and has caused rapid declines and extirpation among others. ManyAustralian mammals now only persist in a small number of refugial populations of few individuals with a high risk of extinction from demographic population failure and catastrophic events. The persistence of many Australian mammal species now depends on continuous management, and the creation of new populations through translocations into predator controlled areas. Predator exclusion fences have become pivotal for effectively abating the predation threat for remnant populations and translocations. However, translocations are notoriously costly and failure prone, making it particularly important to identify protocols that maximize the likelihood of success. Thorough assessments are therefore required to improve outcomes, but knowledge to make them is often lacking. In this thesis, I address key knowledge gaps associated with translocation and predator management for Australian mammals, with particular regard to conservation fences.In Chapter 2 I address the issue of uncertainty of the accuracy of habitat models. Reintroductions often rely on models to identify suitable habitat, and such modelling requires occurrence data from a representative sample of a species' niche. However, the historic distributions of species that have subsequently declined are often poorly sampled. Therefore, we need to know how thoroughly a species' historic distribution was sampled before habitat suitability models can be trusted. I propose and test a method for determining whether a species' niche is well sampled pre-decline for Australian marsupials, by comparing accumulation curves of niche volume when data are arranged in forward and reverse chronological order. I found that accumulation curves can be used to test if a species' niche is poorly sampled, and that poor association between chronologically and randomly arranged data implies an under sampled niche.A good understanding of how translocated animals use the space within a fence is crucial in making choices about its size. In Chapter 3, I investigate the spatial use of woylies (Bettongia penicillata) a species of acute conservation concern at the Australian Wildlife Conservancy's Scotia Sanctuary in the arid extreme of their known historic distribution. Using GPS tracking devices, I measured the movements of woylies in two adjacent fenced populations. The higher density population occupied foraging ranges similar in size to those previously reported (37ha) while woylies at lower density had homes ranges 2.5 times greater in size (96 ha).The woylies in the lower density population increased the size of their foraging range by covering more unique ground each evening, and spending more time further away from their nest. While the differences between the two populations are most likely related to density, it remains uncertain whether intraspecific competition or environm...

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Rewilding the tropics, and other conservation translocations strategies in the tropicalAsia‐Pacific region

Cited by 28 publications

References 95 publications

Fauna as passengers and drivers in vegetation restoration: A synthesis of processes and evidence

Fauna as passengers and drivers in vegetation restoration: A synthesis of processes and evidence

Reversing defaunation by trophic rewilding in empty forests

Conserving Australia's predator-threatened mammals

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