I am looking for GIS data that defines ecoregions or biomes. I particularly would like something that is used with the academic literature. It must include the mangrove biome and it must be global.
I have http://maps.tnc.org/gis_data.html (TNC)
http://www.worldwildlife.org/publications/terrestrial-ecoregions-of-the-world (WWF)