2.1 Population Flashcards
Life takes place in
populations
Same population means same…
species
time
area
True or False: a population relies on the same resources, interacts, and interbreeds
True
Abiotic factors include
Sunlight, temperature, precipitation, soil, climate, and air/water quality
What are biotic factors?
other living organisms
Biotic factors include
prey, competiters, predators, parasites, and disease
Are plants biotic or abiotic factors?
Biotic because they are alive
What are intrinsic factors?
Adaptations
Why might ecologists try to increase population?
To help endangered species
Why might ecologists try to decrease population size?
To help with pests, invasive species, and disease spreaders
Why might they try to maintain population size?
fisheries management
Population density
organisms/area
pattern of spacing
distribution/dispersion
Random sampling
assumes there is an equivalent ratio between population density of a sampled area and total area
Mark and Recapture
assumes there is an equal ratio of marked to unmarked
