1. Draw an ecosystem

2. Ecosystems and Populations

3. Closed system = no mass lost or gained

4. vocab Earth: the biggest ecosystem. (considered a closed system) Ecosystem: ecological system encompassing a community and all the physical aspects of its habitat.

5. Factors in an ecosystem Biotic factors: living things (trees, animals insects) Abiotic factors: non-living things. (rocks, air, water) Soil: the unconsolidated mineral or organic material on the surface of the earth that serves as a natural medium for the growth of land plants.

6. Communities: Population: a localized group of individuals that belong to the same species that are capable of interbreeding and producing viable offspring. Ex: Community: all the organisms that inhabit a particular area (groups of different species living close enough together for potential interaction). Ex:

7. Resource: something that is used by a living organism. (sun, light, food, water, shelter) Ex: Competition: ecological interaction between two or more species that use the same scarce resource. Ex:

8. Niche: the functional role of a species in an ecosystem. Ex: Dispersion: pattern of distribution of organisms in a population.

9. Food web and energy, and competition

10. Energy Flow Through a Marine Ecosystem

11. Energy Flow Through and Aquatic Ecosystem

12. What are invasive species, and how do they impact the ecosystem?

13. Zebra mussels

14. Invasive Species

15. Competition

17. They suck

18. Humans are stupid, and lazy

19. Scare them, then educate them

21. Human and the Food Web

22. What are other human impacts on ecosystems? Pollution Climate change Recreation Overuse Resource Exploitation

23. Population studies Population density: in a population, the number of individuals Too big= not enough resources Too small=not enough mating partners Population model: hypothetical population that attempts to exhibit the key characteristics of a real population. Exponential growth rate: J-shaped curve showing the rapid increase in a fast (exponentially) growing population. Carrying capacity: population size that an environment can sustain.

24. Growth Patterns Rapidly growing populations (r-strategists) Slowly growing populations(k-strategists)

25. R Strategists Rapidly growing populations (r-strategists): species characterized by rapid growth, high fertility, short life span, reproduction early in life, and exponential growth. Ex: small plants and grasses, bacteria, weeds, insects, rats

26. K strategists Slowly growing populations (k strategists): species characterized by slow growth and maturation few young, slow population growth, reproduction later in life. Ex: humans, other monkeys, elephants, dolphins, whales, sharks.

27. Hardy-Weinberg Principle Ext: describe the Hardy-Weinberg Principle as it applies to how populations change over time. Formula: P2+P2Q+ Q 2 = 1 Things to consider: Genetic drift, mutations, gene flow, natural selection

28. Symbiosis

29. 1. Predation

30. Predation

31. Parasitism

32. Mutualism

33. Commensalism

34. These are all examples of…. Co-evolution

35. Symbiosis Predation-One Organism feeds off another Parasitism-One organism feeds off another but takes along time to kill them. Commensalism-One organism gains and the other does not care. Mutualism-Both organisms gain from the relationship http://www.youtube.com/wat ch?v=hPge_0lea3o http://www.youtube.com/wat ch?v=hPge_0lea3o www.youtube.com/watch?v=9 fmx24FbZoM www.youtube.com/watch?v=9 fmx24FbZoM http://www.youtube.com/wat ch?v=WcQ5_zaJob0 www.youtube.com/watch?v=j bExPtTEBYM www.youtube.com/watch?v=j bExPtTEBYM http://www.youtube.com/wat ch?v=R8g1BU29WVg http://www.youtube.com/wat ch?v=hkU2GS9Tw18&playnext =1&list=PL6380A3CFD04A90C 0&feature=results_video http://www.youtube.com/wat ch?v=hkU2GS9Tw18&playnext =1&list=PL6380A3CFD04A90C 0&feature=results_video

36. Trophic Levels

38. Energy Flow Through a Marine Ecosystem

39. Energy Flow Through and Aquatic Ecosystem

40. Human and the Food Web

41. Invasive Species

43. Success(ion)!!! Succession: Progression of species replacement. Two types of succession: 1.Primary succession 2.Secondary succession What’s the difference?

44. Primary Succession

45. Secondary Succession

49. Succession: Case Study #1-Mount St. Helens

51. Mt. St. Helens

52. Succession Case Study #2: Yellowstone National Park During the Summer of 1988 several fires destroyed 1.2 million acres (36%) Yellowstone National Park and killed 345 elk, 36 deer, 12 moose, 9 bison, and 6 black bears along with countless trees, shrubs, bushes, and grasses. Scientistis and park-goers were terrified, saddened, curious, and then enlightened. On September 13, 1988 the Arnica fire ignited. This time, it was allowed to burn. Why?

53. The Water Cycle

54. The Carbon Cycle

57. The Nitrogen Cycle

59. Biological Communities 7 Major biomes: Tundra Taiga Temperate grasslands Temperate Deciduous forests Savannas Deserts Tropical Rain Forests

60. The Water Cycle

61. The Carbon Cycle

64. The Nitrogen Cycle

66. Biological Communities 7 Major biomes: Tundra Taiga Temperate grasslands Temperate Deciduous forests Savannas Deserts Tropical Rain Forests

67. 1. Tundra

68. 2. Taiga

70. 3. Temperate Grasslands

71. 4. Temperate Deciduous Forest

72. 5. Savannas

73. 6. Desert

75. 7. Tropical Rain Forest