1. Ecosystems Chapter 15

2. 1. The organisms in the photo below represent: a. a population b. a community c. an ecosystem

3. 2. Name one density dependent limiting factor. 3. Name one density independent limiting factor. 4. In a certain habitat that you have been studying for years you notice that the population of deer always seems to stabilize around 50 individuals. This would be the ______________ for that population in that environment.

4. This type of J shaped curve is a good example of ____________ growth.

8. Global Distribution of Biomes

13. Rain Shadows

19. Biological Magnification –Increase in concentration of toxins in tissues of organisms as they move up the food chain Ex: DDT

20. Biological Magnification of DDT

21. The Mercury Menace

24. Fig. 47-11, p. 848 atmosphere wind-driven water vapor 40,000 precipitation onto land 111,000 evaporation from land plants (transpiration) 71,000 evaporation from ocean 425,000 precipitation into ocean 385,000 surface and groundwater flow 40,000 ocean land Water Cycle

32. Categories of Species Interactions Symbionts Species that spend most or all of their life cycle in close association with each other Ex: Predation (Parasitism) Commensalism mutualism

33. Categories of Species Interactions Commensalism (+/0) benefits one species and does not affect the other Mutualism (+/+) benefits both species Interspecific competition (-/-) hurts both species

34. Mutualism Some mutualists defend one another Sea anemone and anemone fish

35. Commensalism

36. Categories of Species Interactions Predation (+/-) and parasitism (+/-) help one species at another’s expense Parasites Live on or in a host and usually do not kill it

38. Warning Coloration

39. Camouflage

40. Batesian Mimicry

42. Parasitism