Ecology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| population growth | births+immigration-deaths-emigration
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| new population | initial population+(pg)(#years)
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| growth rate | population growth/initial populationx100
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| two factors that increase a population are | births and immigration
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| two factors that decrease a population are | deaths and emigration
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| open populations | has all four factors acting on them
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| closed populations | have births and deaths acting on them but do not have immigration or emigration because organisms cannot move in and out
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| carrying capacity | the maximum number of individuals of a species that can be supported indefinitely by the ecosystem
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| density | refers to the number of organisms in an area
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| biodiversity | the number and variety of organisms found in a specific region
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| canopy fogging | use of non-lethal doses of insecticide to sample insect populations in forest canopies
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| quadrant sampling | sampling of several smaller pieces of a much larger area in order to obtain an accurate measure of biodiversity without studying the entire area
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| transect sampling | use of a line through the sampling area; at specific intervals, the type and number of species along the line are recorded
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| netting | fine mesh nets are used to capture birds and bats in terrestrial ecosystems, and fish and other organisms
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| habitat loss | occurs when events, due to natural disasters or human activities, alter a terrestrial or aquatic ecosystem so much that many species can no longer
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Created by:
syddj123
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