Attributes / relations provided by
♦ 1Kattge, J. et al. (2011b)
TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 2Wood Janka Hardness Scale/Chart J W Morlan's Unique Wood Gifts
♦ 3Jérôme Chave, Helene C. Muller-Landau, Timothy R. Baker, Tomás A. Easdale, Hans ter Steege, Campbell O. Webb, 2006.
Regional and phylogenetic variation of wood density across 2,456 neotropical tree species. Ecological Applications 16(6), 2356 - 2367
♦ 4Current Status and Conservation of the Scarlet Macaw (Ara macao) in the Osa Conservation Area (ACOSA), Costa Rica, Fiona Dear, Christopher Vaughan and Adrián Morales Polanco, Research Journal of the Costa Rican Distance Education University Vol. 2(1): 7-21, June, 2010