Ecosystem Ecology Flashcards
1
Q
Types ecosystem
3
A
Terrestrial
Marine
Freshwater
2
Q
Trophic levels
4) (levels
A
Eating levels based source E
- categories trophic levels
- producers: autotrophs
- consumers: eat others
Producers Primary consumers Secondary consumers Quaternary consumer Decomposer / detritivore
3
Q
Producers
A
Sun E
Chem E
4
Q
Consumers
A
Energy others
5
Q
Decomposers/ detritivores
A
Consumers, dead organic material
6
Q
Food chain
A
Linear transfer food E
7
Q
Food webs
A
Set linked food chains
8
Q
What’s primary productivity ?
A
Rate E converted to Chem E/ biomass
9
Q
What’s gross primary productivity
A
Rate producers capture/ store C as biomass over time
10
Q
What’s net primary productivity?
A
Biomass/E remains after plant use for itself
- E available for consumers
11
Q
General rule for amount E loss between levels?
A
~ 10% ( varies 2-30%)
12
Q
Why does biomass reduction happen?
A
- not everything lower levels get eaten
- not everything digestible
- E lost as heat
13
Q
Why’s is transfer E lower higher up trophic levels?
A
- consumer need lots E find/ catch food
