8.3/8.4 population ecology key vocabulary*-
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15 Terms
population
group of individuals of the same species - living in a given area at the same time
birth rate (natality)
rate of new individuals added to the population
brith rate factor
reproduction
death rate (mortality)
rate of individuals removed from the population
death rate factor
death
exponential growth
rapid, unrestricted population increase
exponential growth curve shape
j shaped curve
population density
number of individuals of a species per unit area or volume
carrying capacity (K)
maximum population size environments can sustain over time with available resources
logistic growth
population curve - starts exponentially, slows and stabilizes at carrying capacity
logisitic growth curve shape
s shaped curve
density-dependent factors
limiting factors - effects increase as population density rises
density-dependent factors examples (2)
competition, disease
density independent factors
limiting factors affecting populations regardless of density
density independent factors examples (2)
weather, natural disasters
Note 
Flashcards (26)