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Competition

memorize.ai (lvl 286)

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Section 1

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The most competitive organisms are often what?

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Competition Prep

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6 years ago

Date created

Mar 1, 2020

Cards (32)

Section 1

(32 cards)

The most competitive organisms are often what?

Front

Most susceptible to predation or herbivory

Back

When two species compete for a single resource, what species persists?

Front

The one that can drive down the abundance of that resource to the lowest level

Back

Anything an organism consumes or uses that causes an increase in population growth rate when it becomes more available

Front

Resource

Back

When competitors do not immediately consume resources but defend them

Front

Interference competition

Back

What can predators do?

Front

Reverse the outcome of competition

Back

Two species cannot co-exist on the same resource indefinitely

Front

Competitive Exclusion Principle

Back

Competition not in a vacuum

Front

Predation Mediated Coexistence

Back

A type of interference competition that occurs when organisms use chemicals to harm their competitors

Front

Allelopathy

Back

What are not considered resources?

Front

Ecological factors that cannot be consumed (temperature)

Back

Apparent competition could be generated when?

Front

If one species facilitates the enemy of another species

Back

When two species have a negative effect on each other through an enemy- including a predator, parasite, or herbivore

Front

Apparent competition

Back

Population dynamics of two competing species can be modeled by what?

Front

The logistic growth equation, but expanding it to consider the carrying capacity of the environment relative to the number of individuals from both species

Back

There are often trade-offs between what?

Front

Competitive ability and resistance to predators or herbivores

Back

What is exploitative competition and why?

Front

Indirect competition because it occurs through a shared resource

Back

Two species may coexist when?

Front

When each is better at persisting at low levels of different resources

Back

To include a second species in the logistic growth model, what must be added?

Front

The number the second species (N1 and N2) and the competition coefficient

Back

For related species that compete strongly, what should natural selection favor?

Front

Differences in habitat use

Back

Darwin suggested that competition is most intense between related species why?

Front

Because they have similar traits and consume similar resources

Back

Competitive interactions can also be altered by what?

Front

Disturbances

Back

An effective form of interference competition

Front

Aggressive interactions

Back

Competition in which individuals consume and drive down the abundance of a resource to a point that other individuals cannot persist

Front

Exploitative competition

Back

The ability to compete well may be overwhelmed by what?

Front

By the ability to persist in harsh abiotic conditions

Back

dN/dt = rN (1-N/K)

Front

Logistic growth equation

Back

Allelopathy can be effective for what?

Front

Invasive plants

Back

Variables that convert between the number of individuals of one species and the number of individuals of the other species

Front

Competition Coefficient

Back

An increase in one resource can have a much larger effect on a population when what happens?

Front

There is also an increase in a second resource

Back

dN1/dt=r1N1(1-N1+aN2/K1) dN2/dt=r2N2(1-N2+BN1/K2) a is the competition coefficient for species 1, which converts individuals of species 2 into the equivalent number of individuals of species 1 B is the competition coefficient for species 2, which converts individuals of species 1 into the equivalent number of individuals of species 2

Front

Logistic growth model for 2 species

Back

What is interference competition considered?

Front

Direct competition

Back

Do all resources limit consumer populations?

Front

No

Back

Law stating that a population increases until the supply of the most limiting resource prevents it from increasing further

Front

Leibig's Law of the Minimum

Back

What are some resources for animals?

Front

Food, water, and space

Back

What are some resources for plants?

Front

Sunlight, water, and soil nutrients

Back