The importance of secondary forest blocks for terrestrial mammals within an Acacia/secondary forest matrix in Sarawak, Malaysia

Diversity responses to land-use change are poorly understood at local scales, hindering our ability to make forecasts and management recommendations at scales which are of practical relevance. A key barrier in this has been the underappreciation of grain-dependent diversity responses and the role that β-diversity (variation in community composition across space) plays in this. Decisions about the most effective spatial arrangement of conservation set-aside, for example high conservation value areas, have also neglected β-diversity, despite its role in determining the complementarity of sites. We examined local-scale mammalian species richness and β-diversity across old-growth forest, logged forest, and oil palm plantations in Borneo, using intensive camera- and live-trapping. For the first time, we were able to investigate diversity responses, as well as β-diversity, at multiple spatial grains, and across the whole terrestrial mammal community (large and small mammals); β-diversity was quantified by comparing observed β-diversity with that obtained under a null model, in order to control for sampling effects, and we refer to this as the β-diversity signal. Community responses to land use were grain dependent, with large mammals showing reduced richness in logged forest compared to old-growth forest at the grain of individual sampling points, but no change at the overall land-use level. Responses varied with species group, however, with small mammals increasing in richness at all grains in logged forest compared to old-growth forest. Both species groups were significantly depauperate in oil palm. Large mammal communities in old-growth forest became more heterogeneous at coarser spatial grains and small mammal communities became more homogeneous, while this pattern was reversed in logged forest. Both groups, however, showed a significant β-diversity signal at the finest grain in logged forest, likely due to logging-induced environmental heterogeneity. The β-diversity signal in oil palm was weak, but heterogeneity at the coarsest spatial grain was still evident, likely due to variation in landscape forest cover. Our findings suggest that the most effective spatial arrangement of set-aside will involve trade-offs between conserving large and small mammals. Greater consideration in the conservation and management of tropical landscapes needs to be given to β-diversity at a range of spatial grains.

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“…Such patches, even when isolated from surrounding natural forest, may have considerable value for mammals (McShea et al. , Bernard et al. ).…”

Section: Discussionmentioning

confidence: 99%

Grain‐dependent responses of mammalian diversity to land use and the implications for conservation set‐aside

Wearn

Carbone

Rowcliffe

et al. 2016

Ecological Applications

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“…Recent advances in data analysis will greatly improve the utility of camera-trapping data (MacKenzie et al 2006;Rowcliffe et al 2008;Tobler et al 2008;McShea et al 2009;O'Brien et al 2010). With consideration of imperfect detection probability, likelihoodbased models have been developed to estimate the site occupancy rates of target species related to various sampling and detection variables by repeating sampling (MacKenzie et al , 2003.…”

Section: Potentialmentioning

confidence: 99%

Beyond pandas, the need for a standardized monitoring protocol for large mammals in Chinese nature reserves

Wang

et al. 2010

Biodivers Conserv

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Monitoring programs are important for effective conservation and management programs. However, most of these programs rely on indirect sign surveys of elusive animals that often leave cryptic signs of their presence. In Sichuan Province, China, sign surveys are oriented mainly toward giant panda (Ailuropoda melanoleuca) populations but also are used to track other nationally listed species. We have developed and tested a monitoring system based on camera-trapping that can detect a wide range of large, terrestrial mammal and bird species within the reserves of Sichuan. This system is embedded within current protected area patrolling activities and relies on a partnership of management agencies, universities and international organizations. The international organizations and national universities primarily provide the training and assist with study design and data analysis. Data management and access is controlled at the regional level by the appropriate state agencies. Limitations to this system include the need for additional training and support to less developed reserves and the long-term availability of funds to support field staff. However, the potential return on investment is a consistent tracking of multiple species across diverse set of reserves, facilitating comparative analysis of results that will assist in adaptive management throughout the region.

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“…pegadas e fezes). Para tanto, essa modelagem estima, simultaneamente, um parâmetro denominado ocupação (probabilidade de um sítio ser ocupado pela espécie alvo) e um parâmetro denominado detecção (probabilidade de detectar a espécie alvo dado que ela está presente) (Linkie et al 2007;McShea et al 2009;O`Connell & Bailey, 2011). Esta separação é importante, pois muitas espécies, particularmente as mais raras, embora presentes, podem não ser detectadas pelo pesquisador, gerando falsas ausências.…”

Section: Modelagem Da Probabilidade De Ocupaçãounclassified

Ocupação de paisagens dentro e fora de unidades de conservação pelo veado-catingueiro (Mazama gouazoubira Fischer, 1814) no nordeste paulista

Rodrigues¹

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The importance of secondary forest blocks for terrestrial mammals within an Acacia/secondary forest matrix in Sarawak, Malaysia

Cited by 61 publications

References 36 publications

Grain‐dependent responses of mammalian diversity to land use and the implications for conservation set‐aside

Grain‐dependent responses of mammalian diversity to land use and the implications for conservation set‐aside

Beyond pandas, the need for a standardized monitoring protocol for large mammals in Chinese nature reserves

Ocupação de paisagens dentro e fora de unidades de conservação pelo veado-catingueiro (Mazama gouazoubira Fischer, 1814) no nordeste paulista

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