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Bio Vocab ch 14

biology

QuestionAnswer
habitat all of the biotic and abiotic factors in the area where an organism lives
ecological niche all od the physical, chemical, and biological factors that a species needs to survive, stay healthy, and reproduce.
competitive exclusion when two species are competing for the same resources, one species will be better suited to the niche, and other species will be pushed into another niche or extinction
ecological equivalent species that occupy similar niches but live in different geographical regions
competition when two organisms fight for the same limited resources
predation process by which one organism captures and feeds upon another organism
symbiosis close ecological relationship between two or more organisms of a different species
mutualism +,+
commensalism +, 0
parisitism +,-
population density measurement of the number of individuals living in a dfined space
population dispersion the way in which indiviuals of a population are spread in an area or volume
survivorship curve generalized diagram showing the number of surviving members over time for a measured set of births
immigration movement of individuals into a population from another population
emigration movement of individuals out of a population and into another population
birth increases in the number of individuals in a population
death decreases in the number of individuals in a population
density dependent limiting factors limiting factors that are affected by the number of individuals in a given area
density independent limiting factors the aspects of the environment that limit a population growth regardless of the density of the population
exponatial growth when a population size increases dramatically over a period of time
logistical growth population begins with a period of slow growth followed by a breif period of exponetial gwoth before leveling off at a stable size
carrying capacity maximum number of indiviudal of a particular species that the environment can normally consistantly support
population crash dramatic decline in the size of a population over a short period of time
limiting factor greatest effect in keeping down the size of a population
sucession the sequence of biotic changes that regenerate a damaged community or create a community in a previously uninhabitated area
primary sucession establishment and development of an ecosystem in an area that was previously uninhabitated
pioneer species first organism that live in a previously uninhabited area
secondary succession reestablishment of a damaged ecosystem in an area where the soil was left in tact
Created by: kfran0112
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