ECOLOGECONCEPTSANDAPLUICAZIONSCOPEZTOYNicheJoseph Grinnel (1917,1924), Charles Elton(1927)G. F. Gause(1934),CompetitiveexclusionprincipleG. Evylen Hutchinson(1957):n-dimensionalhypervolume, fundamental niche, realizedniche
Niche Joseph Grinnel (1917,1924), Charles Elton (1927) G. F. Gause(1934), Competitive exclusion principle G. Evylen Hutchinson(1957):n-dimensional hypervolume, fundamental niche, realized niche
ECOLOGECONCEPTSANDAPLUICAZIONSCOPEZTOThe Feeding Niches of Galapagos Finches
➢ The Feeding Niches of Galapagos Finches
The small groundThe large ground finchThe medium groundfinch GeospizaG.magnirostris.eatsfinch Cfortis,eatsfuliginosa,eatsmainly medium seedsmainlylarge seedsmainly small seeds.1.00.8ooe0.60.40.223456Seed depth (mm)FIGURE1O.8Relationship berween body size and seed size in Galapagosfinch species(datafrom Grant1986)