Ecology 2006 Final

Ecology 2006 Final - General Ecology Final Exam Key Points...

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General Ecology Final Exam Key Points 1. Predation 1 a. Be able to list and explain the 8 hypotheses for patterns of species diversity. b. Understand why we consider omnivores and herbivores in the same general way we consider predators. c. What is involved in predation? Prey detection, prey recognition, prey capture modes. d. How do prey avoid detection and/or capture? e. Plant herbivore interactions: Chemical defense, synchronous set, structural adaptations f. Optimal foraging: Energy maximizers and time minimizers. g. Generalist vs. specialist. h. Marginal value theorem 2. Predation 2 a. Functional Response vs. Numerical Response b. 3 forms of functional response: Linear, Asymptotic, Logistic c. Note, these are density independent, density dependent, and density dependent but with varying affects. d. What conditions lead to stable coexistence of predator and prey? e. What causes oscillatory behavior in predator prey systems? f. What effect do prey refugia have on the system? 3. Optimality and tolerance a. Review the examples of Crotaphytus in Missouri, and Glaucomys in Mexico. b. Merriam’s life zones. 4. Diversity and Stability 5. Competition 1 a. Be able to perform a phase plane analysis for a 2 species competitive system. b. Under what conditions is the system stable? c. What is meant by K and alpha compatibility? d. What was a ‘weakness’ with the work of MacArthur and Brown? e. What is the compression hypothesis? f. What is the competitive exclusion principle? g. What is the consequence of dependence between 2 resource axes?
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6. Coevolution a. Know the example of rabbits and myxoma virus in Australia. b. Understand the importance of the evolutionary response in invasive systems like zebra mussels, Cuban treefrogs, and house mice. c. Know the examples of finches in Jamaica and Linnets in Finland. d. Know the consequences of genetic re-organization in laboratory experiments of houseflies abnd blowflies. e. Understand the graph of rate of evolution vs. rate of exploitation for predator and prey. f. What is the taxon cycle? 7. Community Ecology a. What is a community? b. Are communities co-evolved units, or assemblages of species with similar sets of overlapping tolerance limits? c. Do communities replace each other as units? d. What is meant by community structure?
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Ecology Mini-Exam 1. A functional response is defined as: a. As prey density increases, each predator can consume more prey b. As prey density increases, predators increase in number, and that larger number of predators consumes more prey. c. As prey density increases, their death rate increases resulting in the loss of predators. d. As predator density increases, selection for prey increases and prey become more efficient at reproduction. 2.
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Ecology 2006 Final - General Ecology Final Exam Key Points...

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