Lecture 24, Chpt. 27 -- Climate change part 2

Question 1

Define phenology

Answer 1

Timing of seasonal plant & animal activity - reproduction, growth, migration, flowering, leaf out

Question 2

How are caribou altered by phenology?

Answer 2

They live in the tundra and are herbivores, with increased climate change (temperatures) it has longer growing season
- they are timed to give birth during times off high resource availability so they are giving birth when there is not enough food therefore babies are dying

Question 3

How climate change impact ecosystem level changes like NPP, decomposition, and carbon cycling?

Answer 3

• respiration increasing faster than photosynthesis
• increased CO2 in the air = fertilization effect
• too many plants growing - not enough resources and can’t take up the other elements like nitrogen either

Question 4

What species is having the highest rate of extinction?

Answer 4

mammals

Question 5

Define ecosystem services

Answer 5

we need intact forest ecosystems for timber (houses)
healthy soils for food

Question 6

Earth is reaching a tipping point due to what?

Answer 6

human activities such as
agriculture
mining
consumption patterns
human population growth

Question 7

How can humans stabilize the earth?

Answer 7

• by using less fossil fuels
  -government policy that is geared in clean energy, less waste, etc.
• better transportation
• businesses reducing waste-