Appendix B — Data sources

Details of the data sources used in the IUCN Red List of Ecosystem assessment of the tropical glacier ecosystem of the Cordillera de Merida.

B.1 Glacier inventories

We also considered the Global Land Ice Measurements from Space (GLIMS) glacier database (Consortium; Raup et al., 2007)

For the study region both RGI and GLIMS have the same information about glacier outlines.

All measures of extent of glacier ice come from the published work of Ramírez et al. (2020).

For description of current climatic mean conditions in the study region we used:
- Climatic data for one climate station digitised from a published climadiagram in Azócar & Fariñas (2003).
- Two remote sensing time series: Modis Land Surface Temperature data (Wan et al., 2015) and CHIRPS monthly precipitation data (Funk et al., 2015).
For spatial analysis we used interpolated surfaces of bioclimatic variables from Chelsa: https://chelsa-climate.org/exchelsa-extended-bioclim/ (Karger et al., 2017)

For data exploration and visualisation we used following layers:

GMBA mountain inventory version 1.2 (Spehn et al., 2011; Körner et al., 2017)
RESOLVE terrestrial ecoregions, see also the documentation (Dinerstein et al., 2017)
Global 1-km Topography from EarthEnv (Amatulli et al., 2018a, 2018b)
Copernicus Global Land Service, Land Cover 100m. Links to: map visualization, webpage and more info (Buchhorn et al., 2019).
World Database of Protected Areas at protectedplanet.net (UNEP-WCMC & IUCN, 2023)
Mosaic of satellite images (Sentinel 2 MultiSpectral Instrument, Level 2A; December 2021 to March 2022; clouds and shadows removed).