Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- A river of northwest Canada rising in Great Slave Lake in southern Northwest Territories and flowing about 1,740 km (1,080 mi) generally northwest to a vast delta on Mackenzie Bay, an arm of the Beaufort Sea. The Mackenzie Mountains west of the river along the Yukon border rise to 2,972 m (9,751 ft).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a Canadian river; flows into the Beaufort Sea
Etymologies
Sorry, no etymologies found.
Support
Help support Wordnik (and make this page ad-free) by adopting the word Mackenzie River.
Examples
-
The Mackenzie River is the longest river in Canada covering a distance of around 1800 kilometers (km).
-
The spring break-up in the upstream parts of the Mackenzie River catchment causes rapid increases in water and suspended sediment discharges into the delta.
-
The most notable deltas in the Arctic are those of the Lena River in Russia and the Mackenzie River in Canada, where easily eroded sedimentary landscapes contribute to heavy sediment loading in rivers and deltas.
-
This evidence is supported by recent molecular genetic studies of arctic species; for example, a study of the dwarf shrub '' Dryas integrifolia '' indicates glacial occurrences in the high Arctic [5] as well as in Beringia, and a study of the collared lemming '' Dicrostonyx groenlandicus '' indicates separate glacial populations east and west of the Mackenzie River [6], the latter most probably in the Canadian Archipelago.
Late-Quaternary changes in arctic terrestrial ecosystems, climate, and ultraviolet radiation levels 2009
-
Traditional ecological observations by trappers on the Peace-Athabasca Delta of the Mackenzie River system, Canada, suggest that muskrat abundance is likely to increase in high-latitude lakes, ponds, and wetlands as emergent aquatic vegetation becomes more prominent [20].
Changes in aquatic biota and ecosystem structure and function in the Arctic 2009
-
Although also part of the main stem Mackenzie River basin and wholly located north of 60° N, its water budget is primarily determined by inflow that originates from Mackenzie River headwater rivers located much further to the south.
Effects of climate change on general hydro-ecology in the Arctic 2009
-
The latter represents the zones of higher precipitation that feed the major arctic rivers in Region 2 (Lena, Ob, and Yenisey) and eastern Region 3 plus western Region 4 (Mackenzie River).
Broad-scale effects of climate change on freshwater systems in the Arctic 2009
-
In established estuarine systems, such as the Mackenzie River system and the Ob and Yenisey Rivers, increased freshwater input in summer [18] is likely to increase stratification, making these habitats more suitable for freshwater species and less suitable for marine species.
Effects of climate change on general hydro-ecology in the Arctic 2009
-
A comparable degree of high-latitude temperature increase is absent for the Mackenzie River.
Broad-scale effects of climate change on freshwater systems in the Arctic 2009
-
As such, the Mackenzie River system offers the best example of a northern lentic system that is unlikely to be significantly affected by changes in hydrologic processes operating within the north (e.g., direct lake evaporation and precipitation) but will be dependent principally on changes in water-balance processes operating well outside the Arctic.
Effects of climate change on general hydro-ecology in the Arctic 2009
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.