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The influence of landscape relative to site and patch variables on primate distributions in the Colombian Llanos

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Abstract

Context

Primates are an important component of biodiversity in tropical regions. However, many studies on the effects of habitat change on primates ignore the relative influence of landscape composition and configuration.

Objectives

This study addresses the question: how important are landscape-scale forest area and composition relative to patch-scale (1–1080 ha) and site-scale (transect of 1 km) habitat variables for the occupancy and abundance of four primate species in the Colombian Llanos.

Methods

Using a randomly stratified survey design, 81 fragments were surveyed for primate occupancy and abundance. We used zero-inflated models to test the relative influence of landscape-scale, patch-scale and site-scale variables on occupancy and abundance for each species. A 95% confidence set of models was constructed using the cumulative Akaike weight for each model and the relative importance of each set of variables calculated for each primate species.

Results

Occupancy was determined by a combination of site-scale, patch-scale and landscape-scale variables but this varied substantially among the primate species.

Conclusion

Our study highlights the importance of managing primates at a range of scales that considers the relative importance of site-, patch- and landscape-scale variables.

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Acknowledgements

This research was supported by funding from the Australian Research Council Centre of Excellence for Environmental Decisions and IPRS and UQCent scholarships from The University of Queensland also supported the first author. This research met the Animal Ethics Regulations from The University of Queensland (AEC No. GPEM/096/13). The first author wishes to thank the local people and landowners who supported the fieldwork.

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Correspondence to Xyomara Carretero-Pinzón.

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Carretero-Pinzón, X., Defler, T.R., McAlpine, C.A. et al. The influence of landscape relative to site and patch variables on primate distributions in the Colombian Llanos. Landscape Ecol 32, 883–896 (2017). https://doi.org/10.1007/s10980-017-0493-z

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