| 1 |
Hutchins, RHS; Tank, SE; Olefeldt, D; Quinton, WL; Spence, C; Dion, N; . . . Mengistu, SG |
Fluvial CO2 and CH4 patterns across wildfire disturbed ecozones of subarctic Canada: Current status and implications for future change |
2019 |
Taiga Shield, NWT |
CO2, CH4 |
Climate change, permafrost thaw |
CO2 release in rivers from increased terrestrial DOC. Taiga shield streams shifting from carbon sinks to carbon sources in coming decades. |
| 2 |
Lynch, LM; Machmuller, MB; Boot, CM; Covino, TP; Rithner, CD; Cotrufo, MF; . . . Wallenstein, MD |
Dissolved Organic Matter Chemistry and Transport Along an Arctic Tundra Hillslope |
2019 |
Alaska |
DOM |
Climate change, Permafrost thaw |
DOM from organic horizon is plant derived, while permafrost region is microbial in origin. Riparian DOM has greater structural diversity. Terrestrial soils could supply a vast array of compounds as warming and connectivity increases. |
| 3 |
Morison, MQ; Volik, O; Hall, RI; Wiklund, JA; Macrae, ML; & Petrone, RM |
Effects of shoreline permafrost thaw on nutrient dynamics and diatom ecology in a subarctic tundra pond |
2019 |
Hudson Bay Lowlands |
C, N, P |
Climate change, Permafrost thaw |
Increased air temperature, rain, allochthonous carbon and atmospheric nitrogen causing increased diatom accumulation in subarctic lakes. |
| 4 |
Sivarajah, B; Korosi, JB; Blais, JM; & Smol, JP |
Multiple environmental variables influence diatom assemblages across an arsenic gradient in 33 subarctic lakes near abandoned gold mines. |
2019 |
North Slave, NWT |
As, diatoms |
Gold mining |
Arsenic concentration in subarctic lakes decreases away from abandoned gold mines. Diatoms not affected by arsenic concentrations. Instead they are affected by nutrients and climatic |
| 5 |
Wong, L; Noble, B; & Hanna, K |
Water Quality Monitoring to Support Cumulative Effects Assessment and Decision Making in the Mackenzie Valley, Northwest Territories, Canada |
2019 |
Mackenzie River, NWT |
TSS, pH, temperature, conductivity, hydrocarbons, N, DIP, DOP, OC, major ions, Cl, Ca, SO4, Na, K, Mg, SO4, hardness, Hg, As, Cu |
Climate change, Mining, Municipal waste |
Cooperative monitoring programs between government, municipalities and industry are lacking in the NWT. |
| 6 |
Zhu, L; Anello, R; Ruhland, KM; Pisaric, MFJ; Kokelj, SV; Prince, T; & Smol, JP |
Impacts of Road Dust on Small Subarctic Lake Systems |
2019 |
Peel Plateau, NWT |
Major ions, conductance, diatoms |
Road building, Road dust |
Lakes within 1 km of the Dempster highway had higher conductance and major ion concentration than similar undisturbed lakes. |
| 7 |
Bond, MJ; & Carr, J |
Permafrost thaw and implications for the fate and transport of tritium in the Canadian north |
2018 |
NWT, Manitoba, Labrador |
Tritium |
Climate change, Permafrost thaw |
Increase in concentration of tritium in areas of discontinuous permafrost due to thaw. |
| 8 |
Burd, K; Tank, SE; Dion, N; Quinton, WL; Spence, C; Tanentzap, A J; & Olefeldt, D |
Seasonal shifts in export of DOC and nutrients from burned and unburned peatland-rich catchments, Northwest Territories, Canada |
2018 |
Taiga Plains, Mackenzie River Basin, NWT |
DOC |
Climate change, Permafrost thaw |
DOC in subarctic regions is more susceptible to permafrost thaw and changing runoff patterns than forest fires. |
| 9 |
Griffiths, K; Thienpont, J; Jeziorski, A; & Smol, JP |
The impact of calcium-rich diamond mining effluent on downstream cladoceran communities in softwater lakes of the Northwest Territories, Canada |
2018 |
Upper Coppermine River Basin, NWT |
pH, Ca |
Diamond mining |
Increased pH and Ca concentration. |
| 10 |
Kendrick, MR; Huryn, AD; Bowden, WB; Deegan, LA; Findlay, RH; Hershey, AE; . . . Schuett, E. B |
Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river. |
2018 |
Kuparuk River, Alaska |
DOC, N, P |
Climate Change, Permafrost thaw |
Decreases in DOC due to consumption by microbial activity in newly exposed mineral soils. Increased alkalinity from soil water solutes. Increase in nitrogen export. |
| 11 |
Moiseenko, TI; Dinu, MI; Gashkina, NA; Jones, V; Khoroshavin, VY; & Kremleva, TA |
Present status of water chemistry and acidification under nonpoint sources of pollution across European Russia and West Siberia. |
2018 |
European Russia, Western Siberia |
pH |
Climate change, Metallurgy, Oil/gas |
Lake acidification is a result of pollution, vegetation and bedrock buffering capacity. |
| 12 |
St-Gelais, NF; Jokela, A; & Beisner, BE |
Limited functional responses of plankton food webs in northern lakes following diamond mining |
2018 |
Koala Watershed, NWT |
Phytoplankton, N |
Diamond mining |
Increased nitrogen due to mine blasting explosives, causes change in phytoplankton community downstream from mine site. |
| 13 |
Morison, MQ; Macrae, ML; Petrone, RM; & Fishback, L |
Capturing temporal and spatial variability in the chemistry of shallow permafrost ponds. |
2017 |
Hudson Bay Lowlands, Ont |
Nitrogen speciation, DOC, Cl, SO4, K, Ca, Na |
Climate change, Permafrost thaw |
DON, Cl−, Na+, K+ and Mg2+ are hydraulically controlled. Cl−, SO4, Na+, K+, and Ca2+ are temporally coherent. |
| 14 |
Morison, MQ; Macrae, ML; Petrone, RM; & Fishback, L |
Seasonal dynamics in shallow freshwater pond-peatland hydrochemical interactions in a subarctic permafrost environment |
2017 |
Churchill, MB |
N, P, NH4 |
Climate change, Permafrost thaw |
Lowering frost table requires more ppt for fill and spill. Pond nitrogen and phosphorus increase until midsummer, while ammonium decrease through to midsummer. |
| 15 |
Raudina, TV; Loiko, SV; Lim, AG; Krickov, IV; Shirokova, LS; Istigechev, GI; . . . Pokrovsky, OS |
Dissolved organic carbon and major and trace elements in peat porewater of sporadic, discontinuous, and continuous permafrost zones of western Siberia. |
2017 |
Western Siberia, Russia |
DOC, TEs |
Climate change, Permafrost thaw |
Possible decrease in DOC export due to decreasing time of reaction in peat pores. DOC enrichment is higher in peat mounds vs. hollows. Increasing [TE] northwards. |
| 16 |
Gordon, J; Quinton, W; Branfireun, BA; & Olefeldt, D |
Mercury and methylmercury biogeochemistry in a thawing permafrost wetland complex, Northwest Territories, Canada |
2016 |
Mackenzie River Delta, NWT |
Hg |
Climate change, Permafrost thaw |
Increased MeHg draining from poor fens into downstream ecosystems. |
| 17 |
Houben, AJ; French, TD; Kokelj, SV; Wang, XW; Smol, JP; & Blais, JM |
The impacts of permafrost thaw slump events on limnological variables in upland tundra lakes, Mackenzie Delta region |
2016 |
Mackenzie River Delta, NWT |
pH, major ions, DOC, trace metals, nutrients |
Climate change, Thaw slumps |
Lower DOC, lower N in the water column, higher [U], [St], [Li], and higher pH. |
| 18 |
Abbott, BW; Jones, JB; Godsey, SE; Larouche, JR; & Bowden, WB |
Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost |
2015 |
Northern Alaska |
DOC, inorganic nitrogen |
Climate change, Permafrost thaw |
Increased DOC and N. |
| 19 |
Balasubramaniam, AM; Hall, RI; Wolfe, BB; Sweetman, JN; & Wang, XW |
Source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
2015 |
Old Crow Flats, Yukon |
DOC, nitrogen and phosphorous, Mg, Na, S & pH |
Climate change, Changing ppt patterns |
Snowmelt headwaters in foliage rich catchments have higher DOC,N,P. Rainfall dominated foliage sparse catchments are richer in major ions Mg, Na, S and pH. |
| 20 |
Larouche, JR; Abbott, BW; Bowden, WB; & Jones, JB. |
The role of watershed characteristics, permafrost thaw, and wildfire on dissolved organic carbon biodegradability and water chemistry in Arctic headwater streams |
2015 |
North Slope, Alaska |
DOC |
Climate change, Permafrost thaw |
No identifiable effect of permafrost thaw or forest fires on DOC export. Thermokarst type and hydrological connectivity are controlling factors. |
| 21 |
Spence, C; Kokelj, SV; Kokelj, SA; McCluskie, M; & Hedstrom, N |
Evidence of a change in water chemistry in Canada’s subarctic associated with enhanced winter streamflow |
2015 |
Baker Creek, NWT |
DOC, TDS, NH3, NO3 |
Climate change |
Wet winters increase DOC and NH3, and decrease NO3 and TDS. |
| 22 |
Blaen, PJ; Milner, AM; Hannah, DM; Brittain, JE; & Brown, LE |
Impact of changing hydrology on high arctic rivers |
2014 |
Svalbard, Norway |
NH |
Climate change |
NH uptake increased by DOC availability |
| 23 |
French, TD; Houben, AJ; Desforges, JPW; Kimpe, LE; Kokelj, SV; Poulain, AJ; . . .Blais, JM |
Dissolved Organic Carbon Thresholds Affect Mercury Bioaccumulation in Arctic Lakes |
2014 |
Mackenzie River Delta, NWT |
Hg & DOC |
Climate change |
Low DOC causes higher Hg bioaccumulation. |
| 24 |
Bailey, BL; Smith, LJD; Blowes, DW; Ptacek, CJ; Smith, L; & Sego, DC |
The Diavik Waste Rock Project: Persistence of contaminants from blasting agents in waste rock effluent |
2013 |
Diavik Diamond Mine, NWT |
N, SO4 |
Diamond mining |
N and SO4 polluted effluent. |
| 25 |
Brazeau, ML; Blais, JM; Paterson, AM; Keller, W & Poulain, A. J. |
Evidence for microbially mediated production of elemental mercury (Hg0) in subarctic lake sediments |
2013 |
Hudson Bay Lowlands, Ont |
Hg |
Climate change |
Increased water temperature and Increased Na, labile C and mobility of Hg in subarctic lake sediments. |
| 26 |
Kokelj, SV; Zajdlik, B; & Thompson, MS |
The impacts of thawing permafrost on the chemistry of lakes across the subarctic boreal‐tundra transition, Mackenzie Delta region, Canada |
2009 |
Mackenzie River Delta, NWT |
DOC, N, Mg, Ca, SO4 |
Climate change, Permafrost thaw |
Increased DOC and ion concentration. Greater impact than geology and vegetation. |
| 27 |
McEachern, P; Prepas, EE; & Planas, D |
Phytoplankton in boreal SubArctic lakes following enhanced phosphorus loading from forest fire: Impacts on species richness, nitrogen and light limitation |
2009 |
Caribou Mts, Alberta |
N, P, DOC |
Forest fires |
Increased light and N limitation with forest fires. Increase P folowing forest fires. |
| 28 |
Moiseenko, TI; & Gashkina, NA |
Zonal Features of Lake Acidification. |
2009 |
European Russia |
pH |
Climate change, Metallurgy, Oil/gas |
Pollution increases lake acidity easier in granitic bedrock lakes and increases metal content in the water column. |
| 29 |
Greenwald, MJ; Bowden, WB; Gooseff, MN; Zarnetske, JP; McNamara, JP; Bradford, JH; & Brosten, TR. |
Hyporheic exchange and water chemistry of two arctic tundra streams of contrasting geomorphology |
2008 |
North Slope of Brook Range, Alaska |
N, P, NH4 |
Climate change |
Increased hyporeic zone due to climate warming. |
| 30 |
Crump, BC; Adams, HE; Hobbie, JE; & Kling, GW |
Biogeography of bacterioplankton in lakes and streams of an arctic tundra catchment |
2007 |
Alaska |
Bacteria |
Land disturbance |
Similar bacterioplankton in tundra streams, and different in lakes. |
| 31 |
Darmody, RG; Thorn, CE; & Dixon, JC. |
Pyrite-enhanced chemical weathering in Karkevagge, Swedish Lapland |
2007 |
Kärkevagge Catchment, Sweden |
pH |
Climate change |
Chemical weathering of bedrock occurs in subarctic when pH <5. |
| 32 |
Lacelle, D; Doucet, A; Clark, ID; & Lauriol, B |
Acid drainage generation and seasonal recycling in disturbed permafrost near Eagle Plains, northern Yukon Territory, Canada |
2007 |
Eagle Plains, Yukon |
pH |
Road building |
Acid drainage. |
| 33 |
Prowse, TD; Wrona, FJ; Reist, JD; Gibson, JJ; Hobbie, JE; Levesque, LMJ; & Vincent, WF |
Climate change effects on hydroecology of Arctic freshwater ecosystems |
2006 |
Alaska, Russia, Mackenzie River Basin |
DIC, DOC |
Climate change, Permafrost thaw |
Increased DIC, DOC and nutrients. |
| 34 |
Kokelj, SV; Jenkins, RE; Milburn, D; Burn, CR; & Snow, N |
The influence of thermokarst disturbance on the water quality of small upland lakes, Mackenzie Delta region, Northwest Territories, Canada |
2005 |
Mackenzie River Delta, NWT |
DOC, N, Mg, Ca, SO4 |
Climate change, Permafrost thaw |
Decrease in DOC in slump affected areas. |
| 35 |
Millot, R; Gaillardet, J; Dupre, B; & Allegre, CJ |
Northern latitude chemical weathering rates: Clues from the Mackenzie River Basin, Canada. |
2003 |
Mackenzie River, NWT |
Sr isotopes, Na, K, Mg, Ca |
Climate change |
Chemical weathering increased by abundant OM. |
| 36 |
Yunker, MB; Backus, SM; Graf Pannatier, E; Jeffries, DS; & Macdonald, RW |
Sources and significance of alkane and PAH hydrocarbons in Canadian arctic rivers. |
2002 |
Mackenzie River, NWT |
PAH and hydrocarbons |
Climate change |
Erosion of Devonian coals increases PAH and hydrocarbon content. |
| 37 |
Michelutti, N; Laing, TE; & Smol, JP |
Diatom assessment of past environmental changes in lakes located near the Noril’sk (Siberia) smelters |
2001 |
Noril’sk, Russia |
Diatoms, pH |
Mining/Metallurgy |
Diatom assemblage shift due to acidification from nearby smelting operations. |
| 38 |
Duff, KE; Laing, TE; Smol, JP; & Lean, DRS |
Limnological characteristics of lakes located across arctic treeline in northern Russia |
1999 |
Siberia and Western Russia |
pH, DOC, nutrients, major ions, metals, temperature |
Climate change, Mining |
Increased metal content, and lake acidification. |
| 39 |
Korhola, A; Weckstrom, J; & Nyman, M |
Predicting the long-term acidification trends in small subarctic lakes using diatoms |
1999 |
Kola Penninsula, Russia |
Ca, Si, pH |
Mininig/ Metallurgy, Air pollution |
Decrease in pH over time. |
| 40 |
Rigina, O |
GIS analysis of surface water chemistry susceptibility and response to industrial air pollution in the Kola Peninsula, northern Russia |
1998 |
Kola Penninsula, Russia |
pH, major cations, sulfates |
Mining/ Metallurgy, air pollution |
Lake acidification. |
| 41 |
McCarthy, LH; Williams, TG; Stephens, GR; Peddle, J; Robertson, K;& Gregor, DJ |
Baseline studies in the Slave River, NWT, 1990-1994 .1. Evaluation of the chemical quality of water and suspended sediment from the Slave River (NWT) |
1997 |
Slave River, NWT |
PAH, PCB, PCDD/ PCDF’s, CP, EOCls, heavy metals |
Industrial and agricultural activity (oil sands, mining) |
Increased hydrocarbons and heavy metals. |
| 42 |
Puznicki, WS |
Regional patterns of selected water parameters in the Slave Geological Province, Northwest Territories. |
1997 |
Slave Geological Province, NWT |
N/A |
N/A |
N/A |