Ch 4 Definitions 2

1
Ch 4 Definitions 2
2
Non-living factor that shapes an ecosystem.
3
Abiotic factor
4
Biological influence on organisms within an
ecosystem
5
Biotic factor
6
Symbiotic relationship in which one member
benefits and the other is unaffected.
7
Commensalism
8
Rule that no two species can occupy the same
niche in the same habitat at the same time.
9
Competitive exclusion principle
10
Gradual change in living communities that follows
a disturbance.
11
Ecological succession
12
The area where an organism lives, including
biotic and abiotic factors.
13
Habitat
14
Symbiotic relationship in which both species
benefit.
15
Mutualism
16
Full range of conditions in which an organism
lives and the way in which the organism uses
those conditions.
17
Niche
18
Symbiotic relationship in which one organism
lives in or on another organism and harms it.
19
Parasitism
20
First species to populate an area during primary
succession.
21
Pioneer species
22
One organism captures and feeds on another
organism.
23
Predation
24
Succession that occurs on surfaces where no soil
exists.
25
Primary succession
26
Any necessity for life, such as water, light, or
food.
27
Resource
28
Succession following a disturbance that destroys
a community but not the soil.
29
Secondary succession
30
Relationship in which two species live closely
together.
31
Symbiosis
32
end