Important Community Ecology Terms

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Across
  1. 2. a simple diagram that shows one pathway that energy moves from producers to a high level consumer, showing the intermediate links.
  2. 5. a principle in ecology that states that 90% of the energy in any trophic level is lost as waste or heat, and only ten percent is retained in the next tropic level.
  3. 7. a form of symbiosis in which one species benefits by causing direct harm.
  4. 10. _____________ competition occurs when individuals from the same species compete with one another for a resource.
  5. 11. organisms that eat primary consumers, always carnivorous or omnivorous.
  6. 12. the hardy, first species that arrive after a disturbance that sets the stage for primary or secondary succession.
  7. 13. an organism that has part of itself consumed by a parasite.
  8. 16. an interaction in which two organisms attempt to obtain the same resource.
  9. 18. An organism that is fed on by another, usually resulting in its death.
  10. 19. a group of populations of many different species living in the same area at the same time.
  11. 21. another name for plants, this group forms the foundation of all energy pyramids.
  12. 22. a group of individuals of the same species living in the same area at the same time.
  13. 23. an organism that lives on another and feeds on part of it to sustain itself.
  14. 25. organisms that eat producers, always herbivores.
  15. 26. the role an organism fills in its community (includes its place, the way it gets energy, and the interactions it has with others in the community)
  16. 27. a form of symbiosis in which one organism harms another with no clear benefit for itself.
  17. 28. a progression of species in a predictable sequence that occurs when most of the biomass in an area is destroyed.
  18. 30. a form of competition in which one organism physically restricts another organism's access to resources.
Down
  1. 1. a complex diagram that shows multiple pathways for energy movement through consumption in a community.
  2. 3. a form of symbiosis in which both species gain a benefit due to the interaction
  3. 4. a progression of species in a predictable sequence that occurs when all the biomass in an ecosystem is destroyed (including the soil).
  4. 6. a form of competition in which the use of the resource by one individual will decrease the amount available for other individuals without direct interaction between the two.
  5. 8. organisms that eat secondary consumers, always carnivorous or omnivorous.
  6. 9. A scientific explanation of community health that suggests that local species diversity is increased when disturbances are not too rare or too frequent.
  7. 14. a form of predation in which one organism eats all or part of a plant.
  8. 15. _____________ competition occurs when individuals from two different species compete with one another for a resource.
  9. 16. the final community that forms that is relatively stable after the process of succession (this concept is somewhat dated)
  10. 17. a diagram that shows a representation of how much energy (or biomass) is available in each successive trophic level.
  11. 20. a form of symbiosis in which one species benefits and the other experiences no positive or negative effects.
  12. 24. An organism that feeds on another, while these are usually called carnivores the term also technically includes any organism that consumes another.
  13. 29. The amount of matter that is stored in a group of organisms.