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APES Unit 5 Study Guide Name: _________________________________________________ Date___________ APES Study Guide 5 Populations Textbook References Miller, Living In The Environment, 15th edition: Chapters 7-8 pp143-170 Vocabulary **Highlighted terms are harder to find or in other chapters species diversity species richness species evenness interspecific competition resource partitioning parasitism mutualism commensalism predation niche native species exotic/invasive/alien species indicator species cosmopolitan species endemic species ubiquitous species keystone species primary succession secondary succession early successional species or /pioneer species mid-successional species late successional species climax community persistence resilience biotic potential survivorship curve K-strategists r-strategists boom and bust cycles constancy intrinsic rate of increase (r) carrying capacity (K) Study Guide Questions (SGQs): 1. Explain how the role of the American Alligator in its ecological community leads many ecologists to consider it a keystone species. 2. Differentiate between species diversity, species richness and species evenness. Provide examples that illustrate the differences with a fictitious population. 3. All over the world, the top predators in food chains are being exterminated. List three species that represent top predators nearing extinction. Explain why this is happening and what the effect of the loss of top predators has on ecosystems. 4. Describe the environmental conditions that lead to primary succession. List the categories of successional plant and animal species, and provide an example of each. 5. After a devastating fire destroys an ecosystem in a chaparral biome. Describe the series of events that will ultimately result in the full recovery of the ecosystem. Activities & Labs: Biodiversity Basics Shannon-Weiner Biodiversity Lab Biodiversity Bags Succession Activity Good Buddies – Symbiosis Review Predator Prey relationship Survivorship Curves Invasive Species Wanted Posters 6. Explain how sea otters influence the abundance of kelp, when they neither, feed on kelp, or interact directly with kelp plants in any way. 7. Explain how the population cycles of a predator and its prey species are related to one another. Use an example to illustrate your explanation. 8. On a graph of survivorship vs. age, sketch three lines representing the three extremes of population survivorship, identify one organism that exemplifies each extreme. 9. List and describe four characteristics of r-strategists and four characteristics of K-strategists. Identify three species that exemplify each reproductive strategy. 10. If the earth undergoes significant global warming in the next 100 years it could favor one reproductive strategy over another. Select the reproductive strategy that you think will be favored, and write an argument that supports your selection.