Ecology: Populations

population
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Terms in this set (17)
population
a group of organisms, all of the same species, which interbreed and live in the same place at the same time
limiting factor
An environmental factor that causes a population to stop growing or decrease in size.
carrying capacity
Largest number of individuals of a population that a environment can support
invasive species
A species that comes in and takes over, and destroys the ecosystem
population density
Number of individuals per unit area.
Density-dependent limiting factor
environmental resistance that affects a population that has become overly crowded
Density-independent limiting factor
Limiting factors that affect populations in similat ways, regardless of size
Logistic Growth
Image: Logistic Growth
Exponential Growth
Image: Exponential Growth
Emigration
Movement of individuals out of a population
ImmigrationMoving into a populationExample of density-dependent limiting factorscompetition, predation, parasitism/diseaseExample of density-independent limiting factorsnatural disasters, climate change, pollutionAltricialOffspring that are completely dependent on parental carePrecocialhatched or born in an advanced state and able to feed itself almost immediately.r reproductive strategyOpportunistic population that produces many small young with little to no parenting, rapid maturation, fast reproduction and high death rate.K reproductive strategyNot a lot of young in a short period of time, a lot of parental care. Low death rate and most offspring survive long enough to reproduce successfully.