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Module 8 Vocab

Apologia Marine Biology

TermDefinition
ecology the study of the relationship between an organism and its environment
abiotic the nonliving part of an environment
biotic the living part of an environment
carrying capacity the largest population size that can be supported by a specific area with its available resources
limiting resource a factor required for a population to grow, but present in small quantities in an ecosystem
detritus dead organic matter and the decomposing organisms living among it
productivity the rate of photosynthesis carried on in an ecosystem
carbon fixation the converting of inorganic carbon into useful organic carbon substances
nitrogen fixation the converting of gaseous nitrogen into useful organic nitrogen substances
benthic describing organisms that live on the ocean bottom
pelagic describing organisms that live in the water column away from the ocean bottom
habitat a specific place where an organism lives
population a group of individuals of the same species that live together
community all the populations of organisms living in the same area
ecosystem composed of one or more communities, including the physical environment of a specific area
self-regulating population a population prevents itself from excessive growth by using up available resources
intraspecific competition competition among individuals of the same species
interspecific competition competition among individuals of different species
predator organism that eats another organism
prey organism that is eaten by the predator
niche all aspects of an organism's lifestyle - including eating habits, requirements for living space, reproductive strategy, behaviors
host the first individual, usually the larger one, in a symbiotic relationship
symbiont the second individual, usually the smaller one, in a symbiotic relationship
commensalism one type of symbiosis where one species benefits from the relationship while the other is not affected
parasitism one type of symbiosis where one species benefits from the relationship and the other is harmed
mutualism one type of symbiosis where both organisms benefit from the relationship
zooxanthellae tiny dinoflagellates that live in the tissue of coral
autotroph organisms that get energy from their environment and use it to make their own food
heterotroph organisms that get their energy from feeding on autotrophs or other heterotrophs
trophic relationship food relationships
primary producers organisms that make their own food
consumers organisms that eat the primary producers
trophic level each step in a food chain
food web made up of many different food chains
 



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