Lecture 12: Competition Flashcards
1
Q
non-trophic
A
no competition for food, competition for light
2
Q
Interspecific competition
A
- between species
- Closer you are in sharing resources, greater the competition
3
Q
Intraspecific competition
A
competition within a species
4
Q
Fundamental niche
A
- species has potential to use all the resources within an area
5
Q
Realized niche
A
- species can only use a limited part of this area because of its interactions with other species
6
Q
Logistic Equation
A
- a way competititve interactions can be modelled
7
Q
Indirect Competition
A
- limited resource
- species don’t physically interact
8
Q
Exploitation competition
A
- type of indirect competition
- ex. with bass and trout. limiting resource for bass but not directly interacting with trout
9
Q
Direct competition
A
- mostly in mobile organisms
- can happen in plants too
ex. grow overtop plants directly interfering with plants to gain sunlight
10
Q
Low food availability means
A
- more competition/fighting
11
Q
High food availability
A
- species wont fight
12
Q
Assymmetrical competition
A
- one species starts to dominate and outcompete (more of one species than another)
13
Q
Species coexist by character displacement
A
- use resources in different ways
- Share similar resource, foraging on different areas of spectrum
- ex. with time and evolutionary change birds with bigger beaks eating bigger seeds, and birds with smaller seeds eating smaller seeds
- interactions determine beak size
13
Q
Competitive exclusion principle
A
one species carrying capacity drops, other species goes locally extinct
13
Q
Character displacement
A
- Competition causes the phenotypes of competing species to evolve to become different over time, facilitating resource partitioning
