On the use of global DEMs in ecological modelling and the accuracy of new bare-earth DEMs
Ecological Modelling(2018)
Abstract
•Ecological studies often ignore vegetation bias in global DEMs (e.g. SRTM, ASTER).•We evaluated accuracy of two newly available global vegetation bias corrected DEMs.•Vertical error in new MERIT DEM has improved compared to SRTM in our study area.•Vegetation bias affected derived terrain indices and species distribution models.•Effect of vegetation bias in DEMs decrease significantly with resolution adopted.
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Key words
Geomorphometry,Remote sensing,Scale,Species distribution model,Vertical error,Virtual species
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