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APES Chapter 6
N/A
25
Science
11th Grade
09/30/2009

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Cards

Term
Rule of 70
Definition
70 divided by the growth rate will give you the populations doubling time
Term
Biotic Potential
Definition
Ability to reproduce
Term
Carrying Capacity
Definition
The number or biomass of animals that can be supported in a certain area of a habitat
Term
Overshoots
Definition
Exceeds carrying capacity, lead to population crashes
Term
Boom-and-bust Cycles
Definition
Repeated overshooting and crashes
Term
Density-Dependent
Definition
As population increases, effect intensifies
Term
R-Selected Species
Definition
Employ high reproductive rate to overcome high mortality of ignored offspring. Short life, lots of offspring, early maturity etc.
Term
K-Selected Species
Definition
Conservative, growth slows as carrying capacity is approached. Long life, few offspring, late maturity etc.
Term
Natality
Definition
Production of new individuals by birth, hatching, germination or cloning.
Term
Fecundity
Definition
Physical ability to produce
Term
Fertility
Definition
Measure of actual number of offspring
Term
Mortality
Definition
Death rate
Term
Survivorship
Definition
Percent of cohort that lives to a certain age
Term
Life Expectancy
Definition
Number of years of survival
Term
Life Span
Definition
Longest period of life reached by a given type of organism
Term
Emigration
Definition
The movement of members out of a population
Term
Intrinsic Factors on Population Growth
Definition
Same species
Term
Extrinstic Factors on Population Growth
Definition
Outside population
Term
Biotic Factors on Population Growth
Definition
Caused by living organisms
Term
Abiotic Factors on Population Growth
Definition
Nonliving components
Term
Island Biogeography
Definition
Diversity in isolated habitats
Term
Genetic Drift
Definition
Gradual changes in gene frequencies due to random events
Term
Founder Effect/Demographic Bottleneck
Definition
Occur when just a few members of a species survive a catostrophic event
Term
Minimum Viable Population Size
Definition
Number of individuals needed for long-term survival of a rare/endangered species
Term
Metapopulation
Definition
Collection of populations that may have regular or intermittent gene flow between geographically separate units
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