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Topic 6: Pop,Com,Eco

Topic 6: Populations, Communities, & Ecosystems

TermDefinition
niche how an organism makes its living and interacts with the biotic and abiotic factors in its habitat
competition the struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time
predation an interaction in which one organism kills another for food or nutrients
predator organism that kills and eats other organisms
prey organism that is killed and eaten
symbiosis any relationship in which two species live closely together and that benefits at least one of the same species
commensalism a type of symbiosis between two species in which one species benefits and the other species is neither helped nor harmed
mutualism a type of symbiosis in which both species benefit from living together
parasitism a type of symbiosis in which one organism lives with, on, or in a host and harms it
parasite organism that benefits by living in or on another organism and harms them
host organism that the parasite lives in or on and is harmed
succession a series of predictable changes that occur in a community over time
pioneer species the first species to populate an area during succession
biodiversity the number and variety of different species in an area
keystone species a species that influences the survival of many other species in an ecosystem
extinction the disappearance of all members of a species from Earth
invasive species species that are not native to a habitat and can out-compete native species in an ecosystem
ecosystem services the benefits that humans derive from ecosystems
ecology the study of how organisms interact with each other and their environment
conservation the practice of using less of a resource so that it can last longer
sustainability the ability of an ecosystem to maintain biodiversity and production indefinitely
ecological restoration the practice of helping a degraded or destroyed ecosystem recover from damage
Created by: muellershauna
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