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Bis 2B > Species Interactions > Flashcards

Species Interactions Flashcards

1
Q

What is the fundamental niche?

A

The abiotic conditions and organism can survive and inhabit.

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2
Q

What is the realized niche?

A

The biotic conditions that an organism can survive and inhabit.

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3
Q

What is symbiosis?

A

An interaction between two species living in close association with eachother (not always +)
Usually in or one anothers’ bodies

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4
Q

What is competition?

A

Negative effect on both species
When individuals require the same shared limiting resource

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5
Q

What is amensalism?

A

Negative effect on one species and no effect on the other species

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6
Q

What is predation/parasitism?

A

Positive effect on one species and negative effect on another species

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7
Q

What does it mean if two species have no effect on each other?

A

There is no interaction between them

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8
Q

What is commensalism/facilitation?

A

Positive effect for one species and no effect for the other species

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9
Q

What is mutualism?

A

Postitive effect for both species in the relationship

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10
Q

What is the Louta-Volterra Model based on?

A

Exponential growth equation

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11
Q

What is the LV Model equation for prey?

A

dV/dt = rV - pVP

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12
Q

What is the LV Model equation for predator?

A

dP/dt = cpVP - dpP

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13
Q

What drives predator and prey oscillations?

A

The size of each population drives change in the other
Prey increase, predator increase, prey decrease, predator decrease
REMEMBER slight lag between the interactions

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14
Q

What is intraspecific competition?

A

Competition for resources between members of the same species

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15
Q

What is interspecific competition?

A

Competition for resources between members of different species

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16
Q

What are the results of competition?

A

Limited growth, reproduction, and/or survival for both competitors

17
Q

What is the competitive exclusion principle?

A

When two species competing for the same limiting resource can’t coexist
Eventually the stronger will drive the weaker extinct

18
Q

What is resource partitioning?

A

When species share limiting resources by using them in different ways, allowing them to coexist

19
Q

What is character displacement?

A

When species competing for the same limiting resource diverge in morphology due to natural selection

20
Q

What is facultative mutualism?

A

The partners don’t have to participate (optional)
Can survive without the other

21
Q

What is obligative mutualism?

A

The partners must participate in the partnership
Can’t survive or complete their life cycle without the other

22
Q

What are conditional interactions?

A

Relationships that may change if environment changes (nutrients in the soil and elevation)
EX: rhizobium and legumes

23
Q

What is primary succession?

A

No soil, just rocks
Glaciation, dunes, or lava flow

24
Q

What is secondary succession?

A

Just soil
Fire

Bis 2B (8 decks)

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