PopEC and CommEc S2011 - Q3. What is the maximum number of...

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1 1 Reminder • I use the power points in this section to narrow down the information from the Ecology book chapters for you. • You are responsible for all the material in these power points and the directly associated reading. • The slides (content) will be posted after class. • Please focus on taking notes on the class discussion: use slide numbers for note taking 2 Q3. What is the maximum number of Paramecium that can be sustained in this set-up (p. 105 course packet)? A. 400 B. 500 C. 700 D. 900 E. 1000 3 Is carrying capacity K constant for each species? Why? Why not? 4 Q4. Is carrying capacity K constant for each species? Why? Why not? A. Yes B. No 5 Q5. You are setting up catfish ponds and want to make the biggest possible (one- time) profit: How long should you wait (after setting up your ponds) before harvesting?(p. 107 course packet). What considerations went into your decision? A. 2 years B. 3 years C. 5 years D. 6 years E. 8 years 6 You are planning to make a living with a more regular income. 1. How long should you wait (after setting up your ponds) before harvesting for the first time? Why? 2. How much should you harvest at that time? Why?
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2 7 Q6. Your goal is to maximize your annual income while ensuring that you can sustain that income every year. To achieve that goal as fast as possible: when should you harvest for the first time (after setting up your ponds)? A. After 2 years B. After 3 years C. After 4 years D. After 5 years E. After 6 years 8 Homework 1. Please answer all questions that we did not get to in class 2. Please determine your ecological footprint (link in pop ecology folder) and bring the result to class on Friday 9 What is your personal ecological footprint? If every person living on earth today would live your lifestyle: how many Earths would it take to sustain that lifestyle? 10 Q2. What is your ecological footprint? If every person living on earth today would live your lifestyle: how many Earth would it take to sustain that lifestyle? A. I have not determined it yet B. 1-2 C. 3-4 D. 5-6 E. 7 or more 11 Levels of Interactions Community Ecology A biological community is an assemblage of populations of various species living close enough for potential interaction
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3 13 • A community’s interactions include: These interactions affect the survival and reproduction of the species engaged in the interaction 14 Herbivory Herbivory (a herbivore eats parts of a plant) has led to the evolution of plant defenses (mechanical and chemical=plant secondary compounds), and consequent adaptations by herbivores to cope with defenses 15 A change in spatial distribution (clumped, random, uniform) Cryptic coloration (camouflage) Aposematic coloration (warns predators of toxins) Müllerian mimicry – two or more toxic species resemble each other Batesian mimicry – a harmless species mimics a toxic species Predation may lead to… 16 A change in spatial distribution (clumped, random, uniform) Cryptic coloration (camouflage) Aposematic coloration (warns predators of toxins) Müllerian mimicry
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PopEC and CommEc S2011 - Q3. What is the maximum number of...

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