Asteronema breviarticulatum is a species of brown algae in the family Asteronemataceae. They are native to Sergipe, Pernambuco, Bahia, Rio De Janeiro, Espirito Santo, SãO Paulo, Santa Catarina, and Ceará.
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)