Section 1

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Facilitation

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Last updated

1 year ago

Date created

Mar 14, 2020

Cards (17)

Section 1

(17 cards)

Facilitation

Front

An interaction in which one species has a positive effect on the survival and reproduction of another species without the intimate association of a symbiosis

Back

Eutrophication

Front

excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.

Back

Trophic structure

Front

The different feeding relationships in an ecosystem, which determine the route of energy flow and the pattern of chemical cycling

Back

Density independent

Front

Limiting factor that affects all populations in similar ways, regardless of population size. fires, floods, extreme cold

Back

Detritivores

Front

feed on plant and animal remains and other dead matter

Back

Mutualism

Front

A symbiotic relationship in which both organisms benefit

Back

Density dependent

Front

Limit the population growth only when the density reaches a certain level - competition, parasitism, predation

Back

Exponential population growth

Front

Growth of a population in an ideal, unlimited environment, represented by a J-shaped curve when population size is plotted over time.

Back

Symbiosis

Front

A close relationship between two organisms in which at least one of the organisms benefits

Back

Parasitism

Front

A relationship between two species in which one species benefits from the other species, the host, which is harmed

Back

Commensalism

Front

A relationship between two species in which one species benefits and the other is neither helped nor harmed

Back

R-selection

Front

Also called density-independent selection. Characterized by many offspring with little or no parental care.

Back

Ecological niche

Front

all of the physical, chemical, and biological factors that a species needs to survive, stay healthy, and reproduce in an ecosystem

Back

Logistic population growth

Front

Population growth that levels off as population size approaches carrying capacity.

Back

Trophic efficiency

Front

the percentage of production transferred from one trophic level to the next usually 10%

Back

K-selection

Front

Also called density-dependent selection. Characterized by few offspring with little or much parental care.

Back

Biomass

Front

Total amount of living tissue within a given trophic level

Back