HOME
The Info List - Interior Alaska-Yukon Lowland Taiga



--- Advertisement ---


(i)

The INTERIOR ALASKA-YUKON LOWLAND TAIGA ecoregion , in the Taiga and Boreal forests Biome , of far northern North America
North America
.

CONTENTS

* 1 Setting * 2 Flora * 3 Fauna * 4 Threats and preservation * 5 References

SETTING

This is a region of spruce taiga forest covering much of the central and northern interior of the U.S. state of Alaska
Alaska
and Yukon
Yukon
, Canada
Canada
, from the Bering Sea and Beaufort Sea coasts to the Richardson Mountains in the east with the Brooks Range to the north and the Alaska
Alaska
Range to the south. This is an area of low hills and flatlands from sea level to 600m. In the northeast of the ecoregion lies the Yukon
Yukon
Flats , a vast area of wetlands, forest, bog, and low-lying ground at the confluence of the Yukon
Yukon
River , Porcupine River
Porcupine River
and Chandalar River , an area which for Arctic
Arctic
North America
North America
is particularly rich in wildlife as are the similar Minto Flats also in this ecoregion. The underlying soil of the ecoregion is permafrost and even though the area is close to the sea it has a continental climate with short summers and long, cold winters, especially inland.

FLORA

The taiga forests are mainly white spruce ( Picea glauca ) in the warmer drier areas and black spruce ( Picea mariana ) where it is marshier but the ecoregion also contains scrubby areas of dwarf birch ( Betula nana ) and riverbanks of willows , alders , balsam poplars and quaking aspen ( Populus tremuloides ). Specific habitats include the peat bogs and fens of the Old Crow Flats . Warmer, south-facing valley slopes are home to rare plants that have survived in this harsh climate including Shacklett's cryptantha ( Cryptantha shacklettiana), Erysimum asperum and alpine golden buckwheat ( Eriogonum flavum ).

FAUNA

This area is notable for its populations of Porcupine caribou
Porcupine caribou
, a subspecies of caribou named for the herd which roams the Porcupine River area and which along with two other large herds, the Central Arctic
Arctic
and the Western Arctic
Arctic
caribou herds , can be found in this ecoregion. Other mammals include large populations of bears, wolves and other predators while birds of the region include rock ptarmigan , lesser scaup , northern pintail duck, scoters , sandhill crane and widgeons . Finally the Porcupine River
Porcupine River
system is an important breeding ground for Chinook salmon
Chinook salmon
.

THREATS AND PRESERVATION

These taiga forests are almost completely intact apart from clearance around the city of Fairbanks, Alaska
Alaska
and some logging in the Tanana Valley State Forest and oil exploration is ongoing in Eagle Plains , Yukon, while the Dempster Highway crosses the region and brings potential poaching of wildlife. The forest is regularly renewed by naturally occurring forest fires. Large areas of the ecoregion are contained within protected areas including Yukon
Yukon
Flats National Wildlife Refuge , Kanuti National Wildlife Refuge , Koyukuk National Wildlife Refuge (in the floodplain of the Koyukuk River ), Innoko National Wildlife Refuge , Nowitna National Wildlife Refuge (on the Nowitna River another tributary of the Yukon) and the Arctic
Arctic
National Wildlife Refuge , all in Alaska
Alaska
and established by the Alaska
Alaska
National Interest Lands Conservation Act , and Vuntut National Park in northwestern Yukon
Yukon
Territory, Canada. The Bonnet Plume River and Wind Rivers that flow north into the Peel River are popular destinations for rafting and kayaking.

REFERENCES

* ^ A B Hoekstra, J. M.; Molnar, J. L.; Jennings, M.; Revenga, C.; Spalding, M. D.; Boucher, T. M.; Robertson, J. C.; Heibel, T. J.; Ellison, K. (2010). Molnar, J. L., ed. The Atlas of Global Conservation: Changes, Challenges, and Opportunities to Make a Difference. University of California Press . ISBN 978-0-520-26256-0 . * ^ "Interior Alaska- Yukon
Yukon
lowland taiga". Terrestrial Ecoregions. World Wildlife Fund.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Interior_Alaska-Yukon_lowland_taiga additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy .® is a registered trademark of the Wikimedia Foundation, Inc. , a non-profit organization.

* Privacy policy * About * Disclaimers * Contact * Developers * Cookie statement * Mobile view

* *