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memorize.ai (lvl 286)

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Section 1

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Commensalism

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Competition Prep

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Last updated

6 years ago

Date created

Mar 1, 2020

Cards (16)

Section 1

(16 cards)

Commensalism

Front

occurs when one species benefits but the other species is unaffected (+/0).

Back

Interspecific competition

Front

when individuals from different species use the same limiting resources. - occurs when the niches of two species overlap.

Back

Symmetric competition

Front

when both species experience a similar decrease in fitness due to the overlap of their niches and both species may persist in the area of overlap, even if in reduced numbers.

Back

coevolution

Front

pattern of evolution where two species influence each other's adaptations over time.

Back

realized niche

Front

portion of the fundamental niche that a species actually occupies, given limiting factors such as competition with other species.

Back

Asymmetric competition

Front

when one species suffers a greater fitness decline than the other species does. The outcome of this interaction depends on the amount of overlap in their niches.

Back

Niche differentiation

Front

an evolutionary change in resource use, caused by competition over generations.

Back

Consumpation

Front

(including herbivory, predation, and parasitism) occurs when organism eats or absorbs nutrients from another. The interaction increases the consumer's fitness but decreases the victim's fitness (+/-).

Back

competitive exclusion principle

Front

two species that occupy the exact same niche (in all of its biotic and abiotic dimensions) cannot coexist.

Back

Competition

Front

occurs when individuals use the same resources -- resulting in lower fitness for both (-/-)

Back

Intraspecific competition

Front

competition that occurs between members of the same species. - intensifies as a population's density increases thus a major cause of density-dependent growth.

Back

fundamental niche

Front

total theoretical range of environmental conditions that a species can tolerate.

Back

Character displacement.

Front

evolutionary change that occurs in species traits, and that enables species to exploit different resources. - Character displacement makes niche differentiation possible.

Back

Mutualism

Front

occurs when two species interact in a way that confers fitness benefits to both (+/+)

Back

Niche

Front

range of resources that the species is able to use, or range of conditions it can tolerate.

Back

Fitness trade-offs

Front

inevitable compromises in adaptation.

Back