1. Population Ecology

2. Population Dynamics
______________________: all the individuals of a species that live together in an area
______________________: the statistical study of populations, make predictions about how a population will change
Growth Rate: ________________________________________________
How many individuals are born vs. how many die
Birth rate (b) − death rate (d) = ______________________________
Although several species may share a habitat they each have their own niche. A niche is a very narrow range where a species fits within a habitat.

3. 1. Size: ____________________________
Three Key Features of Populations
1. Size: ____________________________
Although several species may share a habitat they each have their own niche. A niche is a very narrow range where a species fits within a habitat.

4. POST-REPRODUCTIVE
REPRODUCTIVE
PRE-REPRODUCTIVE

6. Human Population Growth

7. 2. Density: measurement of population per unit area or unit volume
Three Key Features of Populations
2. Density: measurement of population per unit area or unit volume
_____________________________________________________
Although several species may share a habitat they each have their own niche. A niche is a very narrow range where a species fits within a habitat.

8. 4 Factors that affect density
1. ______________________- movement of individuals into a population
2. ______________________- movement of individuals out of a population

9. 4 Factors that affect density
3. ____________________________________ Biotic factors in the environment that have an increasing effect as population size increases
  Ex. disease
competition
parasites
4. ____________________________________ Abiotic factors in the environment that affect populations regardless of their density
  Ex. temperature
storms
habitat destruction
drought

10. 3. Dispersion:describes their spacing relative to each other
Three Key Features of Populations
3. Dispersion:describes their spacing relative to each other
_______________
Although several species may share a habitat they each have their own niche. A niche is a very narrow range where a species fits within a habitat.

11. factors that affect population growth
____________________ any biotic or abiotic factor that restricts the existence of organisms in a specific environment.
EX.- Amount of water, Amount of food, Temperature
__________________ the maximum population size that can be supported by the available resources, _______________________________________________ _______________________________________________

12. Carrying Capacity N u m b e r
Ok so
Time

13. 2 Life History Patterns
__________________
short life span
small body size
_________________
have many young
Ex: cockroaches, weeds, bacteria

14. 2 Life History Patterns ________________ long life span
__________________
reproduce slowly
provides parental care
Ex: humans, elephants

15. __________________________ can be classified into three general types
Type I, Type II, and Type III I II
III 50
100 1 10
1,000
Percentage of maximum life span
Number of survivors (log scale)

16. Succession-
________________________________________ in which new populations of organisms gradually replace existing ones

17. Primary succession-
New bare rock comes from 2 sources:
1. ___________________________________
2. ___________________________________

18. Rock

19. ____________________________
________________________________________
Ex: lichens are the first to colonize lava rocks

20. ____________________________
________________________________________________________________________________

21. Secondary succession-
sequence of community changes that takes place when _______________________ ________________________________________ ________________________________________

22. Secondary succession-
A fire levels portions of a forest
A farmer plows his field

24. Pond Succession