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Identifying conservation priorities in a defaunated tropical biodiversity hotspot

Tilker, Andrew ; Abrams, Jesse F. ; Nguyen, An ; Hörig, Lisa ; Axtner, Jan ; Louvrier, Julie ; Rawson, Benjamin M. ; Nguyen, Hoa Anh Quang ; Guegan, Francois ; Van Nguyen, Thanh ; Le, Minh ; Sollmann, Rahel ; Wilting, Andreas Maiorano, Luigi

Diversity & distributions, 2020-04, Vol.26 (4), p.426-440 [Periódico revisado por pares]

Oxford: Wiley

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Título:
Identifying conservation priorities in a defaunated tropical biodiversity hotspot
Autor: Tilker, Andrew ; Abrams, Jesse F. ; Nguyen, An ; Hörig, Lisa ; Axtner, Jan ; Louvrier, Julie ; Rawson, Benjamin M. ; Nguyen, Hoa Anh Quang ; Guegan, Francois ; Van Nguyen, Thanh ; Le, Minh ; Sollmann, Rahel ; Wilting, Andreas
Maiorano, Luigi
Assuntos: Annamites ; Anthropogenic factors ; Bayesian analysis ; Biodiversity ; Biodiversity hot spots ; BIODIVERSITY RESEARCH ; Cameras ; camera‐trapping ; Conservation ; Conservation areas ; defaunation ; Elevation ; Endemic species ; Enforcement ; Environmental DNA ; Environmental protection ; Extinction ; Human influences ; Hunting ; Landscape ; Mathematical models ; Mountains ; multispecies occupancy ; National parks ; Occupancy ; Poaching ; Polls & surveys ; Protected areas ; Rainforests ; Rare species ; Robustness ; Species richness ; Tropical environments ; tropical rain forest ; unsustainable hunting ; Wildlife conservation
É parte de: Diversity & distributions, 2020-04, Vol.26 (4), p.426-440
Descrição: Aim Unsustainable hunting is leading to widespread defaunation across the tropics. To mitigate against this threat with limited conservation resources, stakeholders must make decisions on where to focus anti‐poaching activities. Identifying priority areas in a robust way allows decision‐makers to target areas of conservation importance, therefore maximizing the impact of conservation interventions. Location Annamite mountains, Vietnam and Laos. Methods We conducted systematic landscape‐scale surveys across five study sites (four protected areas, one unprotected area) using camera‐trapping and leech‐derived environmental DNA. We analysed detections within a Bayesian multispecies occupancy framework to evaluate species responses to environmental and anthropogenic influences. Species responses were then used to predict occurrence to unsampled regions. We used predicted species richness maps and occurrence of endemic species to identify areas of conservation importance for targeted conservation interventions. Results Analyses showed that habitat‐based covariates were uninformative. Our final model therefore incorporated three anthropogenic covariates as well as elevation, which reflects both ecological and anthropogenic factors. Conservation‐priority species tended to found in areas that are more remote now or have been less accessible in the past, and at higher elevations. Predicted species richness was low and broadly similar across the sites, but slightly higher in the more remote site. Occupancy of the three endemic species showed a similar trend. Main conclusion Identifying spatial patterns of biodiversity in heavily defaunated landscapes may require novel methodological and analytical approaches. Our results indicate that to build robust prediction maps it is beneficial to sample over large spatial scales, use multiple detection methods to increase detections for rare species, include anthropogenic covariates that capture different aspects of hunting pressure and analyse data within a Bayesian multispecies framework. Our models further suggest that more remote areas should be prioritized for anti‐poaching efforts to prevent the loss of rare and endemic species.
Editor: Oxford: Wiley
Idioma: Inglês

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Identifying conservation priorities in a defaunated tropical biodiversity hotspot

Tilker, Andrew ; Abrams, Jesse F. ; Nguyen, An ; Hörig, Lisa ; Axtner, Jan ; Louvrier, Julie ; Rawson, Benjamin M. ; Nguyen, Hoa Anh Quang ; Guegan, Francois ; Van Nguyen, Thanh ; Le, Minh ; Sollmann, Rahel ; Wilting, Andreas Maiorano, Luigi

Oxford: Wiley

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