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Ch. 22 & 23 Ecology

Chapter 22 & 23 Ecology Quiz

Population density Number of organisms in a given area. (NJ is a very densely populated area)
Direct Observation A type of population determination where every organism is counted. Best for organisms that don’t move like plants
Indirect Observation A type of population determination where an estimate of the number of individuals is made based on looking at nest, burrows, tracks, droppings etc
Sampling A type of population determination where one counts the number of organisms in a small area (sample) and then multiplying to find the number in a larger area.
Mark and Recapture A type of population determination where animals are captured, tagged, and then returned to their environment. Over time, more animals are trapped and are checked for tags, and a mathematical formula is then used to estimate population size.
Immigration Populations moving INTO an area
Emigration Populations EXITING and area
Reproductive Potential The theoretical unlimited growth of a population over time (if conditions are right)
Limiting Factors any biotic or abiotic factor that acts in some way to limit the number of individuals that survive and reproduce in a population
Carrying Capacity The maximum number of individuals an environment can support
Created by: barbzabel7