Attributes / relations provided by
♦ 1Grenouillet, G. & Schmidt-Kloiber., A.; 2006; Fish Indicator Database. Euro-limpacs project, Workpackage 7 - Indicators of ecosystem health, Task 4,
www.freshwaterecology.info, version 5.0 (accessed on July 3, 2012).
♦ 2Jorrit 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.
♦ 3del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.).
Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.