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Lecture 7 Bio 228 > Lecture 7 > Flashcards

Lecture 7 Flashcards

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Biology 101 flashcards
1
Q

How do predators influence a community

A

they reduce herbivor populations which can lead to plant growth

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2
Q

Species in a guild

A

Share a resource

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3
Q

Species in a functional group

A

process resources in a similar manner Fix n2

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4
Q

Plants into three groups

A

Competitors
Ruderals
Stress tolerators

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5
Q

Competitors (plants)

A

Monopolize resources

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6
Q

Ruderals (plants

A

Disturbed environments Invest in reproduction

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7
Q

Stress- tolerators

A

Difficult environments - Long lived , Conserve resources

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8
Q

Diversity is influenced by

A

Species richness and species evenness

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9
Q

Alpha Diversity

A

Diversity within a community

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10
Q

Beta Diversity

A

Between-habitat diversity (uniqueness of species

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11
Q

Gamma Diversity

A

Landscape diversity

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12
Q

Keystone Species

A

Have a disproportionately large effect on community structure relative to abundance

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13
Q

Foundational species

A

have stronger role in community based on their numbers.

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14
Q

Competitive exclusion

A

One out competes the other

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15
Q

Competitive release

A

A species can spread out when competitor eliminated.

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16
Q

Exploitation Competition

A

When two species grow together the carrying capacity is reduced for both species, compared to pure populations

17
Q

Fundamental niche

A

Full range of environmental tolerances

18
Q

Realized niche

A

range of tolerance restricted by other species

19
Q

Intermediate Disturbance Hypothesis (IDH)

A

Species richness is the highest at intermediate levels on disturbance

20
Q

High levels of disturbance

A

many species fail to get established

21
Q

Low disturbance

A

competitively superior species suppress others

22
Q

Resource control or bottom up

A

Consumer abundance determined by food limitation

23
Q

Consumer control or top down

A

Abundance of species limited by consumers

Lecture 7 Bio 228 (6 decks)

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