Ecology 5 - Mutualisms Predation Where were going today I....

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1 Mutualisms Predation Where we’re going today… I. II. Population patterns resulting from predator-prey interactions. III. How not to become dinner IV. Community impacts: keystone predators Mutualisms / Commensalism 1. 1. Commensalism Commensalism : effect of spp. 1 on spp. 2 is positive, but 2 has no effect on 1
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2 Scaled-back Antbird, Surinam Mutualisms / Commensalism 1. 1. Commensalism Commensalism : effect of spp. 1 on spp. 2 is positive, but 2 has no effect on 1 2. 2. Mutualism : effect of spp. 1 on spp. 2 is positive, and vice versa obligatory
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3 Tunicates III. Mutualisms / Commensalism 1. 1. Commensalism Commensalism : effect of spp. 1 on spp. 2 is positive, but 2 has no effect on 1 2. 2. Mutualism : effect of spp. 1 on spp. 2 is positive, and vice versa obligatory facultative
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4 Predation
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5 O. stricta Year Population Size 1839 1 plant 1900 10 million hectares 1925 60 million hectares 3-6 ft. tall… Cactoblastis cactorum
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6 Opuntia stricta
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This note was uploaded on 11/08/2009 for the course HUMBIO 2A taught by Professor Boggs,c;durham,w during the Spring '08 term at Stanford.

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Ecology 5 - Mutualisms Predation Where were going today I....

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