MIT1_018JF09_Lec17

MIT1_018JF09_Lec17 - Allelopathy(a form of interference...

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1.018/7.30J fall 2009 Ecology of the Earth System Competition and the Niche READINGS Tues and Thurs LECTUREs: Competition Smith/Smith Chapter 14, 242-263 + Lauer&Spacie (zebra mussels) & Byers readings Predation Smith/Smith Chapter 15 all + Turchin paper on lemmings Today: Resource (exploitative) and interference competition Lotka-Volterra equations experimental evidence for competition the concept of niche field evidence of competition Density-dependent population regulation
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Unformatted text preview: Allelopathy (a form of interference competition) In song sparrows, reproductive success declines with increasing population density – Fewer fledged young per female – Lower juvenile survivorship over the winter dN 1 = r 1 N 1 ( K 1 − N 1 −α 12 N 2 ) dt K 1 1 MIT OpenCourseWare http://ocw.mit.edu 1.018J / 7.30J Ecology I: The Earth Fall 200 9 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms ....
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