Definition: A taxon is Endangered when the best available evidence indicates that it meets any of the
criteria A to E for Endangered, and it is therefore considered to be facing a very high risk of extinction in the wild.
Attribution: Udvardy, M. D. F. (1975). A classification of the biogeographical provinces of the world. IUCN Occasional Paper no. 18. Morges, Switzerland: IUCN
Definition: 1) Producing live offspring from within the body of the parent (Lincoln et al., 1998). 2) Development of an embryo within the body of the parent, in part, resources passing directly from parent to embryo (Barnes et al., 2006).
Attribution: Lincoln, R., Boxshall, G. & Clark, P., 1998. A dictionary of ecology, evolution and systematics (2nd ed.). Cambridge: Cambridge University of Press. Barnes R.S.K., Calow P., Olive P.J.W., Golding, D.W, and Spicer, J.I. 2006. The invertebrates: a new synthesis, Oxford: Blackwell Science Ltd.
http://www.marinespecies.org/traits/wiki/Traits:Viviparous
Definition: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)
