|
From Mountain High to Valley Low
|
Exploring
the habitats of the
North Cascades
|
The story of the North Cascades life zones begins high in the
mountains where winter snows accumulate to feed a high
concentration of glaciers. These sheets of ice continually carve the
mountains into characteristic knife edge ridges called arêtes,
solitary peaks called horns and deep depressions known as cirques. In
summer, streams of cascading water flow from the glaciers into creeks
and rivers, carrying mineral-rich "glacial flour" ground by the
glaciers' weight on underlying rock.
Below this region of perpetual snow and ice, clumps of stunted trees
grow on rocky outcrops, while sub-alpine meadows fill with a riot of
colorful mountain flowers during the brief summer. Wildlife such as
mountain goats, black bears, hoary marmots and pikas make their homes
here adapting to seasonal change and harsh conditions.
|

|
Want to see the magnificent North Cascades
glaciers?
Drive to the end of the Cascade River Road in North Cascades National
Park to see the hanging glaciers on Johannesburg Peak or to the Heather
Meadows area at the end of State Route 542 to see glacier-clad Mt. Baker
and Mt. Shuksan.
Want to scale the upper reaches of the North
Cascades mountain range?
A multitude of peaks offer equipped and experienced climbers alpine
challenges from scrambles to multi-day climbs. Check the forest and park
websites for updates on access and climbing conditions and ask at the
ranger stations for a listing of outfitter guides offering instruction
and mountaineering expeditions.
Want to experience a mountain meadow in the
summer time?
Hike to Cascade Pass or Sourdough Mountain in North Cascades National
Park, to Heather and Maple Passes in the Wenatchee- Okanogan National
Forest, or on trails in the National Forest's Mt. Baker National
Recreation Area. Drive to Heather Meadows at the end of the Mt. Baker
Scenic Byway, State Route 542.
Want to take a stroll among tall ancient
trees?
Try Happy Creek Forest Walk or the Thunder Creek Trail along State
Route 20 or Shadow of the Sentinels Trail near Baker Lake, or Horseshoe
Bend Trail along State Route 542.
|
 |
Want to see the splash of a salmon's tail as
it swims upstream?
Visit the Skagit, Cascade and North Fork Nooksack Rivers and their
tributaries at various times of the year when different species of
salmon come to spawn. Stop at visitor centers for information specific
to your time of visit.
Please help the salmon survive by viewing them from a distance and
not entering the streams where they are spawning.
Want to know more about local birding
opportunities?
The Cascade Loop section of the Great Washington Birding Trail
features 225 of Washington State's 365 bird species. For more
information contact Audubon Washington at 1-866-WA-BIRDS, or visit www.wa.
audubon.org with links to North Cascades and Skagit Audubon
Societies.
Want to learn more about the area's natural
and cultural histories?
Ranger led programs as well as featured guest speakers are offered
year round at various locations throughout North Cascades National Park
and the Mt. Baker Ranger District. Check with visitor centers or on the
websites for updated schedules.
|
|
Forested slopes support an abundance of
life. Black tailed deer, elk and small mammals make their way through the trees to
open fields and riparian areas along the banks of rivers and streams, while
a variety of birds nest from ground level to the highest branches.
Twice each year three-quarters of North America's bird
species undertake incredible long-distance journeys between feeding
and breeding grounds. Here in the North Cascades bald eagles come
from as far away as Alaska to feed during the chum salmon run up
the Skagit between November and February. In April, neotropical
birds return from south of the United States. The rufus hummingbird,
a common summer sight here, spends its winters in Mexico.
Swainson's thrush, a forest bird easier heard than seen, journeys to the
mountains from as far south as northern Argentina and Paraguay.
|
 |
Birds Link the Americas. As the migrating neotropical birds
return to the area, exhibits about them are displayed at the North
Cascades Visitor Center in Newhalem. Wilson's warbler, western tanager
and rufous hummingbird are among the featured colorful beauties.
We share these citizens of Latin American nations, some of the
birds which most characterize summer in the Northwest.
In addition to providing critical habitat for migratory birds, park
and forest lands provide natural laboratories for research. Park research
in cooperation with the Institute for Bird Populations shows
that knowing the relationships between birds and their habitat
helps indicate ecosystem health and problems for other species.
Research also helps predict the consequences of land management, such
as fires, visitor use, snag removal and forest harvest on non-park
service lands. Survival of this important aspect of the North
Cascades ecosystem depends on caring people protecting the habitat
birds need in each season.
|
|

Waterways are constantly on the move connecting the glaciers to Puget
Sound.
Streams join rivers, depositing minerals and nutrients from the mountains to form rich wetlands teeming
with fish and other aquatic life before flowing out to the
sea.
Salmon are an icon of the Pacific
Northwest. The North Cascades supports populations of 7 anadromous salmonoid
species: Chinook (king), coho, chum, pink, sockeye, steelhead and cutthroat trout. Anadromous fish, ones that breed in
freshwater streams or lakes and spend their adult lives in the ocean, are important both economically and environmentally. Salmon are
rich in the nutrients that flow through the mountain systems to the sea. When they return to spawn, they die and return nutrients
to the streams and, by predation, to the surrounding land. Salmon need cool, clear streams with pools, riffles and clean gravel
to succeed in their life journey.
|
<<<Previous | Index | Next>>>
http://www.nps.gov/noca/challenger/ch12-13.htm
Date: 1-May-2006
|