Ecology, PCB 3043 Practice Exam #3 questions

Part 1: True-false. Mark T for “true” and F for “false.” 1. Intact mangrove forests, sea grass beds, coral reefs, and estuaries provide thousands of dollars’ worth of ecosystem services per hectare each year. 2. If region 1 comprises site A with 10 species and site B with the same 10 species, and region 2 comprises site C with 4 species and site D with 4 different species, then region 1 has greater alpha and beta diversity. 3. An example of secondary succession is regeneration of a hardwood hammock after a hurricane. 4. We humans have not yet exceeded the ability of the Earth to sustain our activities. 5. Succession on a fallen whale carcass starts with bacteria, continues with various small invertebrates, and ends years later with large fish such as hagfish and sharks. 6. Assuming typical biomass transfer between trophic levels, when you eat a ½ lb. hamburger, you should gain about ¼ lb. in weight.