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Power7_SpeciesInteractions

Power7_SpeciesInteractions - 1 Predation Competition...

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Unformatted text preview: 1 Predation Competition Species interactions Species interactions 2 53.1 53.1 Interspecific Interactions: Effect of individuals (or populations) on other individuals (or populations) of different species 3 Pairwise Species Interactions • Competition (interspecific) (-, -) • Predation, herbivory, parasitism (+, -) • Mutualism (+, +) • Amensalism (0, -) • Commensalism (0, +) d humans / d cattle = ? (Effect of species i on species j, effect of j on i) 4 5 True predators- many hosts- always lethal 6 52.21 52.19 7 Grazers- many hosts- rarely lethal 8 1437 nm Parasites- one or few hosts- rarely lethal 9 Parasitoids- one host- always lethal 10 11 Functional definitions: 12 53.1 53.1 13 LE 53-2 Chthamalus fundamental niche High tide Low tide Ocean Chthamalus realized niche High tide Low tide Ocean Balanus realized niche Chthamalus Balanus 14 Connell’s experimental demonstration of asymmetric,...
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