Northern River Basins Study and the Athabasca River: The Value of Experimental Approaches in a Weight-of-Evidence Assessment

2014 ◽  
pp. 385-396
Author(s):  
Alexa Alexander ◽  
Patricia Chambers ◽  
Robert Brua ◽  
Joseph Culp
Keyword(s):  
River Basins ◽  
Weight Of Evidence ◽  
Athabasca River ◽  
Northern River ◽  
Experimental Approaches

scholarly journals Microbiology of a northern river: bacterial distribution and relationship to suspended sediment and organic carbon

1979 ◽  
Vol 25 (9) ◽  
pp. 1058-1062 ◽  
Author(s):  
G. G. Geesey ◽  
J. W. Costerton
Keyword(s):  
Organic Carbon ◽  
Suspended Sediment ◽  
Mining Operations ◽  
Free Living ◽  
Athabasca River ◽  
Turbid Waters ◽  
Northern River ◽  
High Concentrations ◽  
Northeastern Alberta ◽  
Carbon Concentrations

Epifluorescent microscopy showed as many as 4 × 106 bacteria/mL in the turbid waters of the Athabasca River near the tar sand deposits in northeastern Alberta. The numbers were usually similar upstream and downstream (60 km) from pilot-mining operations. The majority of bacteria existed as free-living cells in spite of the fact there were high concentrations of suspended sediment present (average 220 mg/L) during the ice-free period. Fluctuations in bacterial concentration were positively correlated (r = 0.86, P < 0.05) with total organic carbon concentrations in the river water.

scholarly journals Population genetics of Bull Trout (Salvelinus confluentus) in the Upper Athabasca river basin

2019 ◽  
Author(s):  
Emma K. T. Carroll ◽  
Steven M. Vamosi
Keyword(s):  
River Basin ◽  
Habitat Degradation ◽  
Isolation By Distance ◽  
Land Use Changes ◽  
River Basins ◽  
Bull Trout ◽  
Eastern Slope ◽  
Salvelinus Confluentus ◽  
Athabasca River ◽  
Population Genetic Variation

AbstractAcross its native range, Bull Trout (Salvelinus confluentus) extent and abundance are in decline due to historic overharvest and habitat degradation. Because Bull Trout are dependent on extensively connected, cold, clean headwater habitats, fragmentation from land use changes causes difficulty when determining the true extent and health of their populations, with Bull Trout of Alberta’s Eastern Slope region being no exception. Across this region, 431 Bull Trout from 20 sites were sampled from the Athabasca and Saskatchewan River basins and compared using 10 microsatellite loci to characterize within- and among-population genetic variation. The Saskatchewan and Athabasca River basins contained similar levels of heterozygosity but were differentiated from one another. Within the Athabasca River basin, five genetically differentiated clusters were found. Additionally, no isolation-by-distance pattern was observed between these sites. These results suggest these populations have ample genetic diversity, but genetic differentiation should be considered when deciding whether and how to alter connectivity between populations.

Management of Northern River Basins: Scope, objectives and outcome of the Conference

River Systems ◽  
2002 ◽  
Vol 13 (3-4) ◽  
pp. 189-194
Author(s):  
Juha Kämäri ◽  
Erkki Alasaarela ◽  
Jouko Inkeröinen ◽  
Satu-Maaria Karjalainen ◽  
Kaisa Heikkinen
Keyword(s):  
River Basins ◽  
Northern River

scholarly journals Application of a technique for scenario prediction of climate change impact on the water balance components of northern river basins

2014 ◽  
Vol 62 (3) ◽  
pp. 197-208 ◽  
Author(s):  
Yeugeniy M. Gusev ◽  
Olga N. Nasonova
Keyword(s):  
Climate Change ◽  
Time Series ◽  
Water Balance ◽  
River Basin ◽  
General Circulation ◽  
General Circulation Models ◽  
River Basins ◽  
Surface Model ◽  
Water Balance Components ◽  
Northern River

Abstract The scenario forecasting technique for assessing changes of water balance components of the northern river basins due to possible climate change was developed. Three IPCC global emission scenarios corresponding to different possible scenarios for economic, technological, political and demographic development of the human civilization in the 21st century were chosen for generating climate change projections by an ensemble of 16 General Circulation Models with a high spatial resolution. The projections representing increments of monthly values of meteorological characteristics were used for creating 3-hour meteorological time series up to 2063 for the Northern Dvina River basin, which belongs to the pan-Arctic basin and locates at the north of the European part of Russia. The obtained time series were applied as forcing data to drive the land surface model SWAP to simulate possible changes in the water balance components due to different scenarios of climate change for the Northern Dvina River basin

Indicators of sustainable water level regulation in northern river basins: a case study from the River Paatsjoki water system in northern Lapland.

River Systems ◽  
2002 ◽  
Vol 13 (3-4) ◽  
pp. 353-370 ◽  
Author(s):  
S. Hellsten ◽  
M. Marttunen ◽  
M. Visuri ◽  
A. Keto ◽  
S. Partanen ◽  
...  
Keyword(s):  
Water Level ◽  
Water System ◽  
River Basins ◽  
Northern River ◽  
Water Level Regulation
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