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lecture+2+2011 - ESPM 114 Lecture 2 Ni Niche Ecology What...

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Ni h E l ESPM 114 – Lecture 2 Niche Ecology
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What is a “niche”? Grinnell (1917) – characteristics of sites where an organism can live; where conditions are suitable Elton (1927) – position and function performed by a species in its community Hutchinson (1957) – region in a multi-dimensional space of environmental factors that affect the welfare of the species C i i i i i i Conditions in which a species can survive and reproduce (Determined by: Water economy, temp tolerance, body size, diet, circadian and circannual rhythms, habitat use, behavior)
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