1. Population Ecology

2. Population Density is the number of organisms per unit of area

3. Things that affect a Population’s Size (LIMITING FACTORS)
Density-Dependent Limiting Factors
Competition
Predation
Parasitism
Crowding/Stress
BIOTIC (living)
Density-Independent Factors
Weather
Fires
Droughts/ Floods
Human Activities
ABIOTIC (non-living)

4. Predation – what happened to the moose population as the wolf population increased?

5. Population Growth Rate
Growth Rate, Emigration, Immigration, Exponential Growth, Logistic Growth, Carrying Capacity

6. Population Growth Rate
Definition – explains how a population grows
Formula to calculate growth rate
Births – Deaths = Growth Rate
Time

7. Factors Effecting Growth Rate of a Population
Natality – number of births
Mortality – number of deaths
Emigration – leaving or exiting a population
Immigration – moving into a population

8. Types of Growth in a Population
Logistic – population level balances out
Births = deaths and/ or…
Emigration = immigration

9. Types of Growth in a Population
Exponential
Births > Deaths and/ or…
Emigration < Immigration

10. Carrying Capacity
Definition – Maximum number of individuals in a species that an environment can support for the long term.

11. Carrying Capacity

12. What type of growth is this?

13. Human Population Growth Rate

14. Animal Adaptations Behavior Defense Inherited Learned Mechanical
Instincts/ Reflexes
Territorial
Migration
Learned
Habituation
Imprinting
Defense
Mechanical
Chemical

15. Instinctive Behavior

16. Territorial Behavior

17. Migration

18. Hibernation and Estivation

19. Cryptic Coloration

20. Disruptive Color-shading

21. Counter-shading

22. Chemical Defenses

23. Plants adapt to their environment
Thorns
To stop animals from eating them
Thick stems and leaves
To hold water
Shape
Hold water, attract insects
Smell
Attract and Deter
Bright Colors
Creative Seeds
To be carried by animals, water or wind

24. Sweet Gum Tree – Seed Pods

25. Maple Trees – helicopter seeds

26. Dandelions

27. Piture Plant

28. Bromelliad

29. Cactus

30. Succulent

31. Fragrant Flowers

32. Fragrant Flowers

33. Brightly-colored Flowers

34. Brightly-colored Flowers

35. Geotropism - helps the roots grow down and the stems to grow up

37. Phototropism
Growth of a plant towards sunlight

39. Thigmotropism – plant’s response to touch – could be due to GROWTH, SEED DISPERSAL, FOOD, PROTECTION

40. Impatiens capensis

41. Plant Hormones
Hormone (chemical messenger that plants use to control growth in response to their environment)
Auxin – regulates phototropism by stimulating the elongation of cells; keeps fruit from dropping
Giberellin – growth hormone that causes a plant to grow taller and increases the rate of seed germination and budding
Ethelyene - causes fruit to ripen