Download ch 7 vocabulary questions community ecology1

APES
Unit 4
Chapter 7 - Community Ecology
Essential Questions and Vocab
Due Date___________________
Vocabulary
native species
nonnative species
keystone species
interspecific competition
symbiosis
mutualism
primary succession
climax community
secondary succession
species diversity
edge effect
Name___________________________________
fire-climax community
predation
indicator species
intraspecific competition
resource partitioning
parasitism
commensalism
pioneer species
territoriality
species abundance
competitive exclusion principle
Questions:
1. List four characteristics of the structure of a community or ecosystem.
2. Distinguish between species diversity and species abundance.
3. Give an example of an edge effect.
4. How does species diversity vary with a.) latitude in terrestrial communities, b.) ocean depth, and c.)
pollution in aquatic systems?
5. What is the theory of island biogeography? How do the size of an island and its distance from a
mainland affect its species diversity?
6. Why are birds good indicator species? Explain why amphibians are considered indicator species, and list
reasons for declines in their populations.
7. Describe the keystone ecological roles of gopher tortoises. What can happen in an ecosystem that loses a
keystone species?
8. Give an example of interspecific and intraspecific competition.
9. What is the competitive exclusion principle? What are two ways species will avoid competition?
10. How does resource partitioning allow species to avoid overlaps of their fundamental niches?
11. Describe the predator-prey relationship, and give two examples of this type of species interaction.
12. List six ways used by prey to avoid their predators, and give an example of each type.
13. What are three types of symbiotic interactions between species?
14. How is parasitism different from predation? What is the ecological importance of parasitism?
15. Give three examples of environmental disturbances, and explain how they can affect succession. How
can some disturbances be beneficial to ecosystems?
16. Explain how occasional fires can be beneficial to succession and species in some types of ecosystems.
17. Does high species diversity always increase ecosystem stability? Explain.