Forest ecology

Question 1

Why is there differing regions

Answer 1

• Temperature
  
  • Precipitation
  • Soil types
    Disturbance agents

Question 2

Why is there differing subregions within regions1

Answer 2

• precipitation
  
  • Temperature
  • Elevation

Question 3

Different layers of canopy

Answer 3

canopy
understory
forest floor

Question 4

Shade intolerant

Answer 4

• Strong light needed for establush light
  Faster juvenile growth

Question 5

Shade tolerant

Answer 5

• Can establish and grow at low light
  Slower juvenile growth

Question 6

Dense canopies:

Answer 6

eloiminate understory
happens in dense uniform plantations

Question 7

Partial harvest forestry

Answer 7

○ Keep some shade in site at all times,
○ Promote regeneration of shade tolerant trees

Question 8

How canopy affects watershed

Answer 8

-transpiration
interception

Question 9

Interception

Answer 9

○ Water held in canopy of trees
○ Liable to return to atmosphere by sublimation

Question 10

transpiration

Answer 10

○ Water evaporating from leaves

Question 11

• Interception- forest floor

Answer 11

○ Feather moss and forest floor also intercept snow7 and rain
○ Acts as thermal barrier
○ Controls nutrient cycling
○ Prevents erosion

Question 12

carbon storage in canopies

Answer 12

• Storage in closed C cycle, and then released back into atmosphere from: forest fires, insects, disease
  
  • Solid wood products take C out of loop for 1-500 years
    Forest floor might also store more C than trees

Question 13

fire

Answer 13

consumes fine fuels including soil C