Attributes / relations provided by
♦ 1i-Tree Species v. 4.0, developed by the USDA Forest Service's Northern Research Station and SUNY-ESF using the Horticopia, Inc. plant database.
♦ 2Kattge, J. et al. (2011b)
TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 3Wood Janka Hardness Scale/Chart J W Morlan's Unique Wood Gifts
♦ 4Forest Inventory and Analysis DB version 5.1, May 4, 2013, U.S. Forest Service
♦ 5Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P.
ScaleNet 4 November 2009
♦ 6Jorrit 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.
♦ 7CONTRIBUTION TO THE KNOWLEDGE OF THE DIET OF IRANIAN BIRDS, Abolghasem Khaleghizadeh, Mohammad E. Sehhatisabet, Екологія, Беркут 15, Вип. 1-2. 2006. pp. 145-150
♦ 8DIET AND FEEDING BEHAVIOR OF THE REDDISH-BELLIED PARAKEET (PYRRHURA FRONTALIS) IN AN ARAUCARIA FOREST IN SOUTHEASTERN BRAZIL, Giane C. Kristosch & Luiz O. Marcondes-Machado, ORNITOLOGIA NEOTROPICAL 12: 215223, 2001