Ecological characteristics of streams in the Barrenlands near Lac de Gras, N.W.T., Canada.(Northwest Territories)

From: Arctic | Date: September 1, 2003| Author: Jones, Nicholas E.; Katopodis, Chris; Scrimgeour, Garry J.; Tonn, William M. | Copyright information

ABSTRACT. We examined spatiotemporal variation in the physical, chemical, and biological characteristics of pristine streams that represent a range of conditions near Lac de Gras in the Barrenlands region of the Northwest Territories, Canada. Principal component analysis organized streams into four groups on the basis of seven physical characteristics. Despite broad differences among groups in physical characteristics, variation in chemical and biological characteristics was genera...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and journal articles from HighBeam Research

Ecological characteristics of streams in the Barrenlands near Lac de Gras, N.W.T., Canada.(Northwest Territories)
Arctic ; ... and substrate composition, was determined for the twenty streams both on the ground and from aerial photographs and topographic maps. Stream length was measured as the thalweg distance from the upstream lake to the downstream lake. Substrate composition was ...
Special session possible: E-mail prescriptions, streams likely on agenda
Charleston Gazette ; tomsearls@wvgazette.com Gov. Joe Manchin probably will call a quick special legislative session after lawmakers complete work on the budget this week to pass bills dealing with e-mail prescriptions and, possibly, clean streams. The e-prescription bill would allow physicians to send prescriptions to
DEP defends tighter rules on pollution of streams
Charleston Daily Mail ; Whatever the number of waterways involved, the state environmental agency believes that heightened protection for streams in West Virginia is good science and good policy. The Department of Environmental Protection has faced criticism over its handling of a process by which dozens of streams will
Recovery of Aquatic Macroinvertebrate Communities from Drought in Georgia Piedmont Headwater Streams
The American Midland Naturalist ; ABSTRACT.- Drought is an important disturbance in stream ecosystems. From 1998-2002 Georgia suffered a major drought, causing many headwater streams to experience reduced flows or to dry completely. Six headwater streams in the Georgia Piedmont were selected and paired based on similarities in
DEP chief opposes lesser list of streams: ; Timmermeyer: Science not used in removing waterways' protection
Charleston Gazette ; More on Legislature. 6A kward@wvgazette.com Streams are being removed from a protected waterways list with little regard for science or water-quality rules, the Manchin administration's top environmental regulator says. "Decisions are being made not based on the scientific data," said Stephanie
Committee OKs rule protecting 309 streams
Charleston Daily Mail ; A recommendation by lawmakers regarding the number of streams in West Virginia that will get special protection from pollution likely means a fight during the legislative session. An interim committee on Tuesday recommended final approval of a rule sought by the Department of Environmental
PESTICIDES COMMON IN WATER A STUDY FOUND TRACE LEVELS OF CARCINOGENIC PESTICIDES IN MOST RIVERS AND STREAMS.(FRONT)
Wisconsin State Journal (Madison, WI) ; Byline: JOHN HEILPRIN Associated Press WASHINGTON -- Most of the nation's rivers and streams -- and the fish in them -- are contaminated with pesticides linked to cancer, birth defects and neurological disorders, but not at levels that can harm humans. Pesticides were found in almost all U.S.
Forestry and salmon: a new law protects salmon streams from nearby logging.(Alaska's forestry law)
Alaska Business Monthly ; A new law protects salmon streams from nearby logging. There are probably few bills in the Alaska Senate that receive a co-sponsorship from Wrangell Republican Robin Taylor and Rampart Democrat Georgianna Lincoln. Senate Bill 12 did, however, receive such a bipartisan nod. In fact, it faced only
Streams will be affected by standards
St. Joseph News-Press ; ... Phil Schroeder, the chief of water quality monitoring for the Missouri Department of Natural Resources, said in an Internet news conference Tuesday that a federal law requiring water treatment facilities to disinfect their effluent of bacteria into a stream ...
Pesticides found throughout the nation's streams
Charleston Gazette ; WASHINGTON - Most of the nation's rivers and streams - and the fish in them - are contaminated with pesticides linked to cancer, birth defects and neurological disorders, but not at levels that can harm humans. Pesticides were found in almost all U.S. rivers and streams between 1992 and 2001, says