L1

Question 1

What is ecosystem structure?

Answer 1

• Who lives there, what traits do they have?
• Biodiversity
• Biomass value
• Leaf area

Question 2

In terms of Biomed what is ecosystem structure comparable to?

Answer 2

Anatomy

Question 3

What is Ecosystem function?

Answer 3

• What processes operate and how are they controlled?
• Eg carbon exchange with the atmosphere
• Hydrological cycle and energy exchange

Question 4

In terms of Biomed what is Ecosystem function comparable to?

Answer 4

Physiology

Question 5

Storms have varying names differing upon what?

Answer 5

The sea in which they come from.

Question 6

Does CO2 have a short residence time?

Answer 6

No - a long one

Question 7

Temperature change depends on what?

Answer 7

Cumulative CO2 emissions

Question 8

Will global temperature rise even with reduced emissions?

Answer 8

Yes

Question 9

What does stopping climate change require?

Answer 9

Net zero CO2 emissions

Question 10

What compensates for residual emissions?

Answer 10

Removing CO2

Question 11

What do the best CO2 removal mechanisms involve?

Answer 11

Photosynthesis

Question 12

Net zero requires…?

Answer 12

A reversal in net deforestation

Question 13

Reforestation

Answer 13

Forest restoral

Question 14

Afforestation

Answer 14

Forest planted in areas where no forest was present

Tricky to identify whether a forest has vs hasnt been present

Question 15

What makes up a a large chunk of residual emissions?

Answer 15

Trace gases from agriculture

Question 16

Agriculture is an important source of….?

Answer 16

Non CO2 greenhouse gases eg fertiliser etc

Question 17

What compensates for the greenhouse gases from agriculture?

Answer 17

Forestry and BECCS

Question 18

BECCS

Answer 18

Bioenergy with carbon capture and storage

Growing biofuels and burying them, then capturing and burying CO2

Question 19

How can we tell ecosystems act as substantial carbon sinks?

Answer 19

• Satellite evidence, models etc

Question 20

A net sink means…?

Answer 20

Overall more in compared to out

Question 21

A net source means…?

Answer 21

Overall more out compared to in

Question 22

Is there exchange between source and sinks?

Answer 22

Yes, there is constant exchange