BIOL2060 - Lecture 32 - Nov 28, 2013

Do non predator keystone species exist r removal of

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Unformatted text preview: terpillars What stabilizes communities? Do non-predator keystone species exist? R = removal of shelter tents R+T = artificial shelters added R+T+C = artificial shelters plus caterpillars ecosystem engineer = keystone effects Lill & Marquis (2003) Ecology 84:682 This stabilizes the herbivore diversity… which puts the trees at risk Outline of Biol*2060 topics SECTION I: WHAT IS ECOLOGY AND HOW DO WE STUDY IT? SECTION II: EFFECT OF THE ABIOTIC ENVIRONMENT ON THE DISTRIBUTION OF ORGANISMS SECTION III: EFFECT OF THE BIOTIC AND ABIOTIC ENVIRONMENT ON THE ABUNDANCE OF ORGANISMS SECTION IV: EFFECT OF SPECIES INTERACTIONS ON THE DISTRIBUTION AND ABUNDANCE OF ORGANISMS SECTION V: COMMUNITIES AND ECOSYSTEMS 18 9 What is Ecology?: Our working definition The study of the interactions that determine the distribution and abundance of organisms. Interactions can be with biotic or abiotic environment. 19 10...
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