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NAME___________________________ UNIT 8: Chapter 6 Population and Community Ecology: Objectives: Discuss the ways in which population sizes change. Describe species interactions and the roles of keystone species. Discuss the process of ecological succession. Discuss species richness of a community. Notes: READ!!!! (I will cover this chapter fast.) Your own notes: pages 150-172 New England Forests pg 149-150 (Compare and Contrast to Easter Island) Terms: Community K-selected species Population ecology r-selected species Age structure Survivorship curves Density dependent factors Metapopulations Limiting resources Predation Carrying capacity (K) Mutualism Density-independent factors Commensalism Exponential growth model Keystone species J-shaped curve Primary succession Logistic growth model Secondary succession S-shaped curve Theory of island biogeography Overshoot die off Assignment(s): Multiple Choices page 174-176 #1-12 Good Buddies game (chart notes) Free Response Question (you may need to look over Unit 1 notes as a review) Score __________________/75 The California Department of Fish and Game is developing a plan to connect mountain “habitat islands” that are separated by open areas of flat, arid land in the deserts of southeastern California. These mountain areas are habitats for desert bighorn sheep (Ovis Canadensis), which move extensively among the islands through habitat corridors. The habitat corridors provide opportunities for recolonization, seasonal migration, and maintenance of genetic variation among the metapopulation of desert bighorn sheep. (a) Explain what is meant by a metapopulation and how it relates to the desert bighorn sheep. (1 point) (b) Identify two density-dependent factors and one density-independent factor that could affect the populations of desert bighorn sheep. (3 points) (c) Explain the consequences to the desert bighorn sheep population if the plan to connect the mountain habitat islands is not implemented. (2 points) (d) Explain how the theory of island biogeography applies to the mountainous areas of southeastern California. (4 points)