Determinants of sun bear Helarctos malayanus habitat use in Sabah, Malaysian Borneo and its predicted distribution under future forest degradation and loss

Guharajan, Roshan; Abrams, Jesse F.; Abram, Nicola K.; Lim, Hong Ye; Clements, Gopalasamy Reuben; Deere, Nicolas J.; Struebig, Matthew J.; Goossens, Benoît; Gardner, Penny C.; Brodie, Jedediah F.; Granados, Alys; Teoh, Shu Woan; Hearn, Andrew J.; Ross, Joanna; Macdonald, David W.; Mohamed, Azlan; Wong, Seth T.; Hastie, Alexander Y. L.; Wong, Wai-Ming; Kretzschmar, Petra; Wong, Siew Te; Koh, Sharon P. H.; Wilting, Andreas

doi:10.1007/s10531-022-02503-9

Cited by 2 publications

References 52 publications

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A window into the forest: post‐release behaviour of rehabilitated Bornean sun bears Helarctos malayanus euryspilus in Sabah, Malaysia

Brunton,

Levengood,

Tee

et al. 2024

Wildlife Biology

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As the number of threatened wildlife species increases globally, captive rehabilitation and release of wild caught animals plays an increasingly significant role in conservation efforts, particularly where poaching threatens wild populations. Sun bear Helarctos malayanus populations are decreasing globally, with habitat loss and fragmentation and poaching as key threats to the species. This study aimed to assess post‐release behaviour of rehabilitated sun bears (n = 12) using GPS‐collar data to inform ongoing efforts to rehabilitate wild caught bears. We assessed spatial patterns of movement using kernel density estimates and utilisation distributions. We utilised an information theory (IT) and generalised linear modelling approach to assess temporal patterns of sun bear movement (n = 9). Post‐release home range estimates (mean = 56.68 km2, range:1.9–202.4) and behaviour varied widely between bears, with no significant difference in home range size between males (n = 3) and females (n = 6). Home ranges of most bears stabilised within the first month. Bears that were rehabilitated and released together did not spend a significant amount of time together following release. Bears were most active during daytime hours and most established a post‐release home range encompassing the riverside. The ultimate success of the releases is unknown, due to collar malfunction and damage, and the inaccessibility of the study terrain. We find that future releases of sun bears would benefit from soft‐release and in situ rehabilitation techniques. This study provides important insights into the complexity of bear reintroductions informing future rehabilitation and releases for threatened bear species.

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A window into the forest: post‐release behaviour of rehabilitated Bornean sun bears Helarctos malayanus euryspilus in Sabah, Malaysia

Brunton,

Levengood,

Tee

et al. 2024

Wildlife Biology

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A window into the forest: post-release behaviour of rehabilitated Bornean Sun bears (Helarctos malayanus euryspilus) in Sabah, Malaysia

Brunton,

Levengood,

Lee

et al. 2023

Preprint

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As the number of threatened wildlife species increases globally, captive rehabilitation and release of wild caught animals plays an increasingly significant role in conservation efforts, particularly where poaching threatens wild populations. Sun bear (Helarctos malayanus) populations are decreasing globally, with habitat loss and fragmentation and poaching as key threats to the species. This study aimed to assess post-release behaviour of rehabilitated Sun bears (n = 12) using GPS-collar data to inform ongoing efforts to rehabilitate wild caught bears. We assessed spatial patterns of movement using kernel density estimates and utilisation distributions. We utilised an information theory (IT) and generalised linear modelling approach to assess temporal patterns of sun bear movement (n = 9). Home range estimates (mean = 56.68 km2, range:1.9 – 202.4) and post-release behaviour varied widely between bears, with no significant difference in home range size between males (n = 3) and females (n = 6). Home ranges of most bears stabilised within the first month and bears that were rehabilitated and released together did not spend a significant amount of time together following release. Bears were most active during daytime hours and most established a home range encompassing the riverside. The ultimate success of the releases is unknown, due to collar malfunction and damage, and the inaccessibility of the study terrain. We find that future releases of Sun bears would benefit from soft-release and in-situ rehabilitation techniques. This study provides important insights into the complexity of bear reintroductions informing future rehabilitation and releases for threatened bear species.

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Determinants of sun bear Helarctos malayanus habitat use in Sabah, Malaysian Borneo and its predicted distribution under future forest degradation and loss

Abstract: Bo r n e o a n d it s p r e dic t e d di s t ri b u tio n u n d e r fu t u r e fo r e s t d e g r a d a tio n a n d los s. Bio div e r si ty a n d Co n s e rv a tio n 3 2 , p p .

Cited by 2 publications

References 52 publications

A window into the forest: post‐release behaviour of rehabilitated Bornean sun bears Helarctos malayanus euryspilus in Sabah, Malaysia

A window into the forest: post‐release behaviour of rehabilitated Bornean sun bears Helarctos malayanus euryspilus in Sabah, Malaysia

A window into the forest: post-release behaviour of rehabilitated Bornean Sun bears (Helarctos malayanus euryspilus) in Sabah, Malaysia

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