Past and present siliceous algal communities in subarctic thermokarst landscapes, Nunavik (Northern Québec)

Our study will be focused on both planktonic and periphytic species. We will analyze the present-day composition of these communities for each type of substratum and habitat from four different sites distributed along a south to north gradient (1) Southern shore of Great Whale River, «SAS» site (55°14'N; 77°42'W); 2) Near (~15-20 km NE of) Kuujjuarapik-Whapmagoostui, «KWK» site (55°20'N; 77°30'W); 3) Sheldrake River near Umiujaq, «BGR» site (56°37'N; 76°13'W); 4) Nastapoka River, «NAS» site (56°55'N; 76°23'W)), in order to establish and quantify the relationships between species and environmental parameters. Finally, we will apply the transfer functions on the fossil diatoms preserved in the sedimentary sequences of some select sites. This will allow us to infer the evolution of limnological conditions through time, and to predict the response of these ecosystems to global warming.

Metadata Access
Creator Reinhard Pienitz; Valentin Proult; Biljana Narancic; Frédéric Bouchard; Warwick F. Vincent
Publisher Canadian Cryospheric Information Network
Contributor Polar Data Catalogue
Publication Year 2015
Rights Research programs, CCIN, or ArcticNet take no liability for the use or transmission of this data
OpenAccess true
Contact reinhard.pienitz(at); pdc(at)
Language English
Format Computer file
Discipline Environmental Research
Spatial Coverage (-77.800W, 55.300S, -76.600E, 56.000N)
Temporal Coverage Begin 2012-08-06T00:00:00Z
Temporal Coverage End 2012-08-25T00:00:00Z