Attributes / relations provided by
♦ 1USDA Plants Database, U. S. Department of Agriculture
♦ 2Kattge, J. et al. (2011b)
TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 3Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 4Red Siskin, BirdLife International (1992) Threatened Birds of the Americas. Cambridge, UK: BirdLife International.