Selective logging causes the decline of large-sized mammals including those in unlogged patches surrounded by logged and agricultural areas

Jamaluddin, Jamhuri; Samantha, Liza D.; Tee, Sze Ling; Kamarudin, Nurzatulshima; Ashton‐Butt, Adham; Zubaid, Akbar; Lechner, Alex M.; Azhar, Badrul

doi:10.1016/j.biocon.2018.09.004

Cited by 41 publications

(28 citation statements)

References 54 publications

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“…US$25,000–125,000), and imprisonment for up to five years for its poaching. While laws appear to be adequate, corresponding wildlife enforcement and specialised anti-poaching patrols particularly in these Permanent Reserved Forests continues to be poor or non-existent [ 7 , 34 ].…”

Section: Discussionmentioning

confidence: 99%

Managing threatened ungulates in logged-primary forest mosaics in Malaysia

Rayan

Linkie

2020

PLoS ONE

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Across the tropics, large-bodied mammals have been affected by selective logging in ways that vary with levels of timber extraction, collateral damage, species-specific traits and secondary effects of hunting, as facilitated by improved access through logging roads. In Peninsular Malaysia, 3.0 million hectares or 61 percent of its Permanent Reserved Forests is officially assigned for commercial selective logging. Understanding how wildlife adapts and uses logged forest is critical for its management and, for threatened species, their conservation. In this study, we quantify the population status of four tropical ungulate species in a large selectively logged forest reserve and an adjacent primary forest protected area. We then conduct finer scale analyses to identify the species-specific factors that determine their occurrence. A combined indirect sign-camera trapping approach with a large sampling effort (2,665 km and 27,780 trap nights surveyed) covering a wide area (560 km2) generated species-specific detection probabilities and site occupancies. Populations of wild boar were widespread across both logged and primary forests, whereas sambar and muntjac occupancy was lower in logged forest (48.4% and 19.2% respectively), with gaur showing no significant difference. Subsequent modelling revealed the importance of conserving lower elevation habitat in both habitat types, particularly <1,000 m asl, for which occupancies of sambar, muntjac and gaur were typically higher. This finding is important because 75 percent (~13,400 km2) of Peninsular Malaysia’s Main Range Forest (Banjaran Titiwangsa) is under 1,000 m asl and therefore at risk of being converted to industrial timber plantations, which calls for renewed thinking around forest management planning.

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Section: Discussionmentioning

confidence: 99%

Managing threatened ungulates in logged-primary forest mosaics in Malaysia

Rayan

Linkie

2020

PLoS ONE

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“…This kind of logging causes forest degradation rather than complete deforestation. If this degradation continues, it will contribute to negative environmental impacts and wildlife declines (Jamhuri et al, 2018). The chainsaw buyback entrepreneurship program aims to reduce this type of selective logging.…”

Section: Discussionmentioning

confidence: 99%

Reducing Illegal Logging through a Chainsaw Buyback and Entrepreneurship Program at Gunung Palung National Park

Fawzi¹,

Helms²,

Novianto³

et al. 2020

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Gunung Palung National Park in Indonesian Borneo, home to 2,500 Bornean orangutans (Pongo pygmaeus ssp. wurmbii), suffers from severe deforestation that is caused by illegal logging. This article aims to analyze the success of an innovative entrepreneurship program in reducing illegal logging in Gunung Palung National Park. This program combines voluntary chainsaw buybacks with capital investment for former loggers to launch a business of their choice. To analyze the success of this entrepreneurship program, we measured two parameters: (1) transitions of former loggers to sustainable alternative livelihoods and (2) reductions in the number of loggers who log actively inside the park. The average monthly income for participating business partners was 2,923,333 rupiah or $209 USD for new partners who had participated for less than one year and 3,357,778 rupiah or $240 for established partners who had participated for more than one year. This income is about the minimum wage for the local area. The failure rate of the program—defined as the partners that returned to logging—was only 6%, or 3 out of 50 partners. Successful forest conservation, however, requires addressing additional factors beyond reducing the access to logging equipment.

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“…As the proportion of oil palm and pasture increases relative to forests and wetlands, the habitat is likely to become less suitable for jaguars. For example, recent camera trap surveys did not detect tigers in oil palm landscapes of lowland Peninsular Malaysia [82–84], which is one of their historical strongholds [85–86]. Globally, most palm oil is produced in Malaysia and Indonesia where its destructive impacts on threatened species have been well documented [87–90].…”

Section: Discussionmentioning

confidence: 99%

Wetlands are keystone habitats for jaguars in an intercontinental biodiversity hotspot

et al. 2019

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Agricultural development was the major contributor to South America’s designation as the continent with the highest rates of forest loss from 2000–2012. As the apex predator in the Neotropics, jaguars (Panthera onca) are dependent on forest cover but the species’ response to habitat fragmentation in heterogeneous agricultural landscapes has not been a subject of extensive research. We used occupancy as a measure of jaguar habitat use in Colombia’s middle Magdalena River valley which, as part of the intercontinental Tumbes-Chocó-Magdalena biodiversity hotspot, is exceedingly fragmented by expanding cattle pastures and oil palm plantations. We used single-season occupancy models to analyze 9 months of data (2015–2016) from 70 camera trap sites. Given the middle Magdalena’s status as a “jaguar corridor” and our possible violation of the occupancy models’ demographic closure assumption, we interpreted our results as “probability of habitat use (Ψ)” by jaguars. We measured the associations between jaguar presence and coverage of forest, oil palm, and wetlands in radii buffers of 1, 3, and 5 km around each camera trap. Our camera traps recorded 77 jaguar detections at 25 of the camera trap sites (36%) during 15,305 trap nights. The probability of detecting jaguars, given their presence at a site, was 0.28 (0.03 SE). In the top-ranked model, jaguar habitat use was positively influenced by wetland coverage (β = 7.16, 3.20 SE) and negatively influenced by cattle pastures (β = -1.40, 0.63 SE), both in the 3 km buffers. We conclude that wetlands may serve as keystone habitats for jaguars in landscapes fragmented by cattle ranches and oil palm plantations. Greater focus on wetland preservation could facilitate jaguar persistence in one of the most important yet vulnerable areas of their distribution.

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Selective logging causes the decline of large-sized mammals including those in unlogged patches surrounded by logged and agricultural areas

Cited by 41 publications

References 54 publications

Managing threatened ungulates in logged-primary forest mosaics in Malaysia

Managing threatened ungulates in logged-primary forest mosaics in Malaysia

Reducing Illegal Logging through a Chainsaw Buyback and Entrepreneurship Program at Gunung Palung National Park

Wetlands are keystone habitats for jaguars in an intercontinental biodiversity hotspot

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