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Stack #4632956

QuestionAnswer
ecology The study of the interactions between organisms and their environment.
abiotic A non-living (physical or chemical) component of the environment.
biotic A living component of an environment.
evolutionary adaptation The genetic adaptation of a population to its environment through evolution.
exponential growth Unrestricted population growth where the population grows at a faster rate with each successive generation.
logistic growth Population growth that is constrained by biotic or abiotic factors such as competition or nutrients.
carrying capacity The maximum population size that can be sustained by the available resources in a given environment.
limiting resource An essential factor whose short supply limits the growth of a population.
competition The interaction that results when a resource is in short supply and one organism uses the resource at the expense of another.
competitive exclusion The elimination of one species by another as a result of competition.
resource partitioning The sharing of resources by specialization.
ecological niche The full range of ecological characteristics of a species, like its feeding habits, specific habitat, and reproductive strategy.
trophic cascade When changes in the abundance of an organism result in changes at other trophic levels of the food chain.
stabilizing selection Natural selection that acts against individuals with extreme expression of a trait.
directional selection Natural selection that favors extreme expression of a trait.
inducible defense Defense mechanism that an organism uses only in response to predators.
coevolution The process in which one species evolves in response to another.
commensal A symbiotic relationship in which one species obtains shelter, food, or other benefits without affecting the other, or host.
parasitism The type of symbiosis in which one partner, the parasite, derives benefit from the other, the host.
mutualism The type of symbiosis in which both partners benefit from the relationship.
recruitment The entry of young individuals into a population or, in fisheries biology, into a fished stock.
benthic Organisms that live on the bottom.
Pelagic open water
Intertidal zone The area between the highest and lowest tide
subtidal zone the bottom above the continental shelf
bathyal zone The bottom between the shelf break and a depth of approximate 4k meters
abyssal zone The bottom from a depth of approximately 4,000 m to 6,000 m.
hadal zone The bottom below 6,000 m.
neritic zone The pelagic environment above the continental shelf.
oceanic zone The pelagic environment beyond the shelf bank
epipelagic zone The pelagic environment from the surface to a depth of 100 to 200m
mesopelagic zone The pelagic environment from a depth of approximately 200 m to 1k m
bathypelagic zone The pelagic environment from a depth of 1k m to 4k m
abyssopelagic zone The pelagic environment from a depth of 4k m to 6k m
hadopelagic zone he pelagic environment below 6,000 m.
Food chain The steps of transfer of energy from primary producers through consumers.
trophic level Each of the steps in a food chain.
food web All of the interconnecting feeding relationships in a community.
trophic pyramid The pyramid-like relationship found in the pyramids of biomass, energy, and numbers of organisms in a food chain.
biomass The total mass of living organisms.
detritus Particles of dead organic matter.
nutrient regeneration The release of nutrients from organic matter by decomposers.
productivity The rate of primary production.
gross primary production The total amount of organic carbon manufactured by primary producers.
net primary production The amount of organic carbon left over to fuel the food web after accounting for producer’s energetic needs.
standing stock (standing crop) The total amount, or biomass, of an organism at a given time.
denitrification The conversion of fixed nitrogen back to nitrogen gas.
chemical precipitation Chemical reactions which convert phosphate into insoluable phosphorus which settle to the sea floor.
Created by: Davonthegreat
 

 



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