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Unformatted text preview: The countdowns continue Last regular-session exam Monday, April 30, 10:00 11:00 am Final Exam Thursday, May 3, 8:00 10:00 am Community ecology Readings: Ch. 53, p. 1159-1170; Ch. 50, p. 1080-1082; Ch. 1, p. 21-23 Community Ecology A community is a collection of plants, animals, fungi, protists, etc. living in the same area and either directly or indirectly interacting Predator prey Associations (e.g., mycorrhyzal fungi; lichens; corals) Competitors Predator-prey cycles Time (years) Which graph is the hare and which is the lynx? Living creatures have evolved some very interesting ways of avoiding predation Fig. 53.5 Crypsis Some species mimic the appearance of others to gain protection from predators Fig. 53.6 Warning signs! Lichens are one of the best known examples of an association between two organisms Remember the tree-fungus-Indian Pipe system? Communities vary In space Vertically Forest: ground to canopy Lake: sediments to surface Horizontally Lake shore to uplands; river to uplands Latitudinal changes In time Succession (short-term); ice ages (long-term) Links between adjacent habitats and their communities can be seasonal......
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This note was uploaded on 04/24/2008 for the course BIOL 216 taught by Professor Baker during the Spring '08 term at Clark University.
- Spring '08