tundra ecology keystone college presented by kim sandor october 2011
TRANSCRIPT
TUNDRAEcology
Keystone College
Presented by Kim Sandor
October 2011
OVERVIEW:
Treeless regions Cold & windy Short growing season 2 types:
Arctic Tundra Alpine Tundra
REGION:
CLIMATE:
Arctic Tundra Average temp. = winter -30 degrees F,
summer 37-54 degrees F Summer season 50-60 days w/24 hours
of sunshine Yearly precipitation 6-10 in. Permafrost layer, ponds, streams, snow
CLIMATE: (cont.)
Alpine Tundra Summer season – 180 days High altitudes/above treeline Well drained soil
VEGETATION:
Low shrubs Sedges Mosses Grasses Lichen Flowers
Short for less vulnerability to wind
Shallow roots to pull moisture from layer of soil above permafrost
VEGETATION:
ANIMALS:
Caribou Arctic Fox Wolves Polar Bears Ravens Terns Ptarmigan
Musk Ox Bear Lemming Snowy Owl Sheep Mountain Goats Migratory Birds
ANIMALS:
ANIMALS:
THREATS:
Gas/Oil Exploration & Extraction Global Warming Air Pollution Ozone Depletion Pesticides
THREATS:
WORKS CITED:
Photos from National Geographic Website & my own photos
Information from National Geographic Website & University of CA Museum of Paleontology