Chapter 54: Community Ecology I Flashcards Preview

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Flashcards in Chapter 54: Community Ecology I Deck (19)
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1

Community

Group of species living close enough to interact with each toher

2

Physical boundaries of a community are defined...?

- By the ecologist to match their research questions

3

Community ecology (def.)

Study of how interactions between species affect structure and organization of communities

4

Interspecific interactions

Interactions between individuals of different species

5

Competition

- - / -
- Individuals of different species that compete for a resource that limits their growth or survival
- Resource must be in short supply

6

Predation

- + / -
- One species kills and eat s the other species
- Most species are adapted for capturing prey

7

Mutualism

- + / +
- Both species benefit

8

Commensalism

- + / 0

9

Infraspecific interactions

- Interactions between a species

10

Community ecologists focus on what sort of interactions?

- Focus on interspecific interactions

11

Competitive exclusion principle

- Two species competing for the same limiting resources cannot coexist in the same place
- In constant conditions, superior competitor will out-compete the inferior competitor

12

Niche

- Biotic and abiotic factors a species uses (plus ecological role)

13

Niche partitioning

- Niches located in different areas
- Ex: Plant root systems

14

Fundamental niche

- Niche that species could POTENTIALLY occupy

15

Realized niche

- Niche that species actually occupies

16

Intertidal barnacle experiment summary?

- Balanus (lower tide) were removed
- Cthamalus (colonized higher tide) began to colonize low tide as well

17

Manners in which predators are adapted to capturing prey?

- Sense of smell
- Vision
- Muscles
- hahahahaha what the fuck

18

Prey adaptations

- Mimicry
- Physical defense
- Behavioral defenses
- Herbivore defenses

19

Symbiosis and types of interactions

- When two or more species live in direct or intimate contact
1) Parasitism: +/- One species derives nourishment from host
2) Mutualism: +/+ Both species benefit
3) Commensalism: One species benefits and the other is neither harmed nor helped