12.1 Competition Predation + Herbivory 10-9-09

12.1 Competition Predation + Herbivory 10-9-09 - Ecology...

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Unformatted text preview: Ecology 203 Overview Geographic Distributions Geographic Distributions Populations Communities Ecosystems Applications Gregg Hartvigsen Populations Population parameters (C8) Population growth (C9) Population growth (C9) Competition (C10) Predation (C11) Herbivory and Mutualism (C12) Disease and Parasitism (C13) Regulation of Populations (C14 Regulation of Populations (C14) Harvesting Populations (C15) Pest Control (C16) Conservation Biology (C17) Granivore = seed eater Results suggest what? What is missing in our test for the presence of competition? To demonstrate that competition occurs between species A and B: 1 Species As presence reduces 1. Species A s presence reduces the performance of species B compared to when B is alone, and 2. Species Bs presence reduces the performance of species A the performance of species A compared to when A is alone. So the design looks like what? Performance A B Results from competition Species A alone Species A with B high NA low low Species B alone Species B with A NA high low low Target Two main approaches -...
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12.1 Competition Predation + Herbivory 10-9-09 - Ecology...

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