The Biodiversity Intactness Index is the modeled average abundance of originally-present species, relative to their abundance in an intact ecosystem. Please refer to Newbold et al. (2016) for all details. Citations: Article: Newbold T, Hudson LN, Arnell AP, Contu S, De Palma A, Ferrier S, Hill SL, Hoskins AJ, Lysenko I, Phillips HR, Burton VJ, Chng CW, Emerson S, Gao D, Pask-Hale G, Hutton J, Jung M, Sanchez-Ortiz K, Simmons BI, Whitmee S, Zhang H, Scharlemann JP, Purvis A. Has land use pushed terrestrial biodiversity beyond the planetary boundary? A global assessment. Science. 2016 Jul 15;353(6296):288-91. doi: 10.1126/science.aaf2201. PMID: 27418509. Dataset Tim Newbold; Lawrence Hudson; Andy Arnell; Sara Contu et al. (2016). Global map of the Biodiversity Intactness Index, from Newbold et al. (2016) Science [Data set]. Natural History Museum. https://doi.org/10.5519/0009936 EPSG:3857