Questions for Lecture 14:  Communities:  Diversity

•  By the end of your preparation on this topic, you should be able to:

    © 1. Define the various components (richness, evenness) of species diversity:  and discuss the
               effect of different structure of community on species-area-curves.
 
    © 2. Describe changes in species diversity with changes in altitude, latitude, and area.

    © 3. Discuss the various factors (e.g., geologic time; non-uniformness of the background;
               competition; predation; productivity; stability; area; distance from regions with large
               number of species) that contribute to species diversity on lands and on islands.

    © 4. Discuss the possible role of diversity in enhancing community stability, resilience, and
               resistance.

    © 5. Describe the following concepts and terms:  biogeography; diversity; index of
               community similarity; niche-fundamental and realized; predation; resilience (ability to
               bounce back to original state after an ³insult² or disturbance²); resistance;
               richness and stability (steadiness in composition and number); Shanon-Weiner Index of
               Species Diversity.
 
 • Outline of presentation :
            For outline of presentation and for the legends of figures, see  the Handbook for the course "Biology 121 Notes, Spring, 1998, University of Illinois, Plant Biology: Ecology and Organismic Plant Biology" by Govindjee, Stipes  Publishing, Champaign,IL.
 
    © Slides used in the class are to be found elsewhere on these Web pages.