polar envioremnts

Question 1

characteristics of the artic region

Answer 1

substantial terrestrial food
land mammals
herbibours
not geographically isolated
glacial refuges
high faunal and floral diversity

Question 1

chractersistcs of Antarctic

Answer 1

no terrestrial food
no land mammals
no herbivores

geographically isolated
no glacial refuges
low faunal and floral diversity

Question 2

what is the tundra climate like summer

Answer 2

cold through all months of the year
6 to 10 weeks) is a brief period of milder climates
when the sun shines almost 24 hours a day.
* Rarely gets above 7 or 10°C but warmth melts top of the permafrost, creating bogs and shallow lakes that don’t drain.

Question 3

tundra weather in the winter

Answer 3

Winter temperatures don’t reach above -7°C and average - 30° to -35°C.
* 24 hours darkness.
* Exceptionally windy.

Question 4

artic ocean

Answer 4

Highly seasonal
* Low overall productivity
* Thick multiyear ice has low
* light levels
* Stable ocean with restricted
Inflow / outflow and vertical
mixing.

Question 5

antartica

Answer 5

Highly seasonal.
* High overall productivity.
* Thin one-year ice has good light
* Levels.
* Good vertical mixing in dynamic
stormy ocean, free exchange with
world oceans.
* Best mixing in well-lit surface areas
and where upwelling of nutrients
occurs e.g., the Scotia Sea.
* In richest parts, summer
phytoplankton yield of vegetable matter is higher than good mid- latitude agricultural land.

Question 6

southrern ocean food web

Answer 6

krill is the most abundant food source