NAME:_________________
DATE:_________
BLOCK: ___
Population Ecology Notes WS
BIO SOL: 9a
Population Dynamics
______________: ____ the ___________ of a species that live ___________ in an area
________________: the _____________ __________ of populations, make _____________ about how a
population will ____________
_________ Key Features of Populations
•
_______
•
__________
•
_______________
•
(clumped, even/___________, random)
1. ________: ___________ of individuals in an area
__________ Rate: Birth Rate (__________) - Death Rate (__________)
How many individuals are _______ vs. how many ____
________ rate (b) − _______ rate (d) = rate of natural ___________(r). b – d = r
Age Pyramids
2.____________: _____________ of population per unit _______ or unit ______________
Formula: Dp= N
S
Pop. Density = # of _____________÷ unit of __________
4 Factors that affect density
1. _______________- ______________ of individuals ______a population
2. ______________- ______________ of individuals _____ of a population
3 Density-______________factors- _________factors in the environment that have an
______________effect as population ______ ________________
Ex. __________, ________________, ___________
4. Density-_____________ factors- _________ factors in the environment that affect
populations _____________ of their ____________
Ex. _____________, storms, ___________ ______________, drought
3._____________: describes their spacing relative to each other
•
•
•
___________
even or uniform
____________
Other factors that affect population growth
_____________ factor- any ________ or _________ factor that ___________ the _____________ of
organisms in a specific environment.
 EX.- Amount of_______, Amount of ______, ______________
_____________ Capacity- the _____________ population size that can be _____________ by the available
resources
 There can _______ be as many _____________as the environmental ___________can ___________
2 _______ __________ Patterns
1. ___ Strategists
2. ___ Strategists

_______ life span

_______ life span

_______ body size

_______ body size

reproduce ________

reproduce ________
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have ________ young

have _____ young

________ parental care

__________ parental care

Ex: cockroaches, ________, bacteria
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Ex: humans, ____________
Human Population Growth