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Characteristics of Populations
Population Dynamics
Life Histories
Population Growth
Limits to Growth
100
A group of individuals that belong to the same species in a given area
What is population?
100
birth and death rates, life expectancy
What must be considered when understanding a population?
100
big-bang, repeated
What is two types of reproduction?
100
the amount by which a population's size changes in a given time
What is growth rate?
100
factor that causes population growth to decrease or increase
What is limiting factor?
200
number of individuals per unit area
What is population density?
200
distribution of individuals among different ages in a population
What is age structure?
200
organism produces a few off spring each year for several years
What is repeated reproduction?
200
number of births, number of deaths, immigration, emigration
What is four factors that can greatly increase or decrease a population?
200
a limiting factor that depends on population size
What is density-dependent limiting factor?
300
clumped, uniformed, random
What is three types of dispersion?
300
shows the likelihood of survival at different ages throughout the lifetime of an organism
What is survivorship curve?
300
the survival rate of the offspring is low
What is big-bang reproduction?
300
occurs when the members of a population are reproducing at a constant rate
What is exponential growth?
300
one of the best known methods of controlling the size of a population
What is predator/prey method?
400
location of 1 individual is independent of the locations of the other individuals
What is random dispersion?
400
the pattern that follows the morality rate of individuals in the population
What is patterns of morality?
400
pacific salmon spends several years growing and maturing near the end of their life, they spawn, reproducing millions of eggs followed by death
What is big-bang reproduction?
400
indicates the population is growing exponentially
What is J-curve?
400
a relationship where the intestines are invaded and nutrients are stolen from the intestines causing the intestines to lose nutrients
What is parasitism?
500
size, geographic distribution, density, dispersion, growth rate, age structure
What are the characteristics of a population?
500
curve is flat at the start, indicating a low death rate and drops steeply neat the end indicating a high death rate
What is type 1 survivorship curve?
500
requires time, energy and resources
What is reproduction?
500
water shortages, less food, disease, no space
What is indications of carrying capacity?
500
unusual weather or natural disasters such as floods and fires
What is density-independent limiting factors?