Orangutan layers
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Spatial Layers > Orangutan layers
| Species | Original data | Year | Description | Source |
|---|---|---|---|---|
| Bornean orangutans | Shapefile | 2019 | The layer is an update of the original Voigt et al.2018 layer predicting the Bornean orangutan density distribution. In 2021 Voigt & Wich provided an update of the initial predictions, based on forest lost in Borneo. This new layer does not consider hunting in the predictions and hence might have overestimated the numbers of orangutans. | Voigt & Wich 2021 |
| Sumatran orangutans | Shapefile | 2015 | Predictive density distribution model for the entire Sumatran orangutan geographic range based on available orangutan presence localities and land land-cover change. | Wich, S. A., Singleton, I., Nowak, M. G., Utami Atmoko, S. S., Nisam, G., Arif, S. M., ... & Kühl, H. S. (2016). Land-cover changes predict steep declines for the Sumatran orangutan (Pongo abelii). Science advances, 2(3), e1500789. |
| Tapanuli and Sumatran orangutans | Shapefile | 2020 | Predicted density distribution of Tapanuli and Sumatran orangutans. | Wich et al. 2020 |
| Bornean orangutans | Shapefile | 1999-2015 | Predictive density distribution model for the entire Bornean orangutan geographic range based on available orangutan surveys and climatic, habitat and threat predictors. | Voigt, M., Wich, S. A., Ancrenaz, M., Meijaard, E., Abram, N., Banes, G. L., ... & Llano Sanchez, K. Global demand for natural resources eliminated more than 100,000 Bornean orangutans http://researchonline. ljmu. ac. uk/id/eprint/7886. |