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| Kramer-Schadt, S.; Reinfelder, V.; Niedballa, J.; Lindenborn, J.; Stillfried, M.; Heckmann, I.; Wilting, A. | |
| The Borneo carnivore database and the application of predictive distribution modelling | |
| 2016 Raffles bulletin of Zoology (33): 18-41 | |
South-east Asian mammals face a particularly severe threat of extinction. Borneo, the third largest island in the world, is located in the centre of South-east Asia. It harbours more endemic carnivores than does any other island except Madagascar. Almost half the Bornean carnivore species have been classified by The IUCN Red List of Threatened Species as threatened. Because little is known about most Bornean carnivores, predicting their spatial distribution is important for management strategies to improve the conservation of these species. As a part of the 1st Borneo Carnivore Symposium (BCS) we started to assemble a knowledge base of Bornean carnivores. We established the Borneo Carnivore Database which contains the previously largely fragmented occurrence records of carnivores on the island and then used these records to predict the distribution of 20 Bornean carnivores (all native species except sun bear _Helarctos malayanus_ and the four otter species, Eurasian otter _Lutra lutra_, Asian small-clawed otter _Aonyx cinereus_, hairy-nosed otter _Lutra sumatrana_ and smooth-coated otter _Lutrogale perspicillata_). We describe general considerations - the underlying assumptions, advantages, and most importantly the limitations and constraints - of species distribution modelling. We then summarise the methodological framework of our modelling approach and results of the sensitivity analyses. We emphasise that despite the extensive efforts to compile existing information, so few or spatially biased occurrence records exist for some species that the model outcomes presented in this journal issue must be interpreted cautiously. We recommend using new data as they become available to test our projections and improve our understanding of carnivore distributions on Borneo. |
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