Biogeochemistry

Question 1

What is the biogeochemical cycle?

Answer 1

Transport and transformation of chemicals in an ecosystem and involves: Biological, Physical, and Chemical processes

Question 2

Mention 3 diverse hydrological conditions influence biogeochemistry processes

Answer 2

•Degree of saturation
•Inflow
•Outflow
(These processes determine overall wetland productivity)

Question 3

(check figure on page 6)

What is intrasystem cycling?

Answer 3

Transport and transformation of chemicals within the wetland (e.g. Carbon cycle)

Question 4

(check figure on page 6)

Give an example of wetland chemical exchange with its surroundings!

Answer 4

• Inflow from forest (either from soil surface or soil subsurface) through water flowing into the wetland
• Outflow from wetland to other ecosystem

Question 5

What does it mean by biogeochemically OPEN wetland?

Answer 5

Much exhange of materials with surrounding environment

Question 6

What does it mean by biogeochemically CLOSED wetland?

Answer 6

Little exchange of materials with surrounding environment

Question 7

Determine whether it’s an OPEN or CLOSED wetland!

Alluvial forests

Answer 7

Open

receiving flood water from the river

Question 8

Determine whether it’s an OPEN or CLOSED wetland!

Bogs

Answer 8

Closed

the only input is from rainwater

Question 9

Determine whether it’s an OPEN or CLOSED wetland!

Tidal salt marshes

Answer 9

Open

Flooded twice a day with seawater

Question 10

Determine whether it’s an OPEN or CLOSED wetland!

Cypress dome

Answer 10

Closed

Major input is rainwater and a little bit surface runoff from surrounding

Question 11

Determine whether it’s an OPEN or CLOSED wetland!

Prairie potholes

Answer 11

in the middle, tending to Closed

Mainly influenced by precipitation and little influence from surface runoff from its surrounding