Lecture 33 Flashcards Preview

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Flashcards in Lecture 33 Deck (15)
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1
Q

Aposematic Colouration

A

warning colouration that they are poisonous

2
Q

Mimicry

A

Batesian: trying to look like something else that may appear harmful
Mullerian: both species that mimic each other are poisonous

3
Q

Keystone Species

A

species that holds the structure and the integrity of the community

4
Q

Keystone Predators: Wolves

A

lowered the number of deer which increased vegetation which led to an increase in a lot more species

5
Q

Individualistic Hypothesis

A

the community is a chance assemblage of species with similar habitat requirements

6
Q

Interactive Hypothesis

A

the community is an assemblage of stable and integrated species, locked into association by mandatory interactions

7
Q

Ecological Succession

A

non-seasonal and directional pattern of colonisation and extinction on a site by different species

8
Q

Primary Succession

A

begins with a virtually “lifeless” environment

9
Q

Pioneer Stage

A

not competitive, generally change conditions facilitating subsequent stages

10
Q

Facilitation

A

when one species alters the environment in a way that benefits other species allowing them to enter the community

11
Q

Inhibition

A

one species is prohibited from becoming established by the presence of another species

12
Q

Tolerance

A

existing species do not affect the probability that subsequent species will become established

13
Q

Climax Stage

A

stable end community of succession (self-perpetuating under prevailing conditions)

14
Q

Secondary Succession

A

gradual invasion of species from surrounding communities following a disturbance (including human habitat disturbances)

15
Q

Island Biogeography

A

suggested a balance of immigration and extinction leading to equilibrium levels of species richness on islands