Characteristics of sites in the Narsajuaq River Valley

General description of the study sites in the Narsajuaq River valley with coordinates, polygon shapes, dominant vegetation type and water saturation level at the surface. With the exception of G4, the 20 D and G sites are polygonal networks that were investigated for ice-wedge activity and morphology (see Gagnon and Allard, 2020). Also, sites D and G were studied by Kasper and Allard (2001) between 1989 and 1991, except for D11, D12, D13 and G8. These four sites are new sites established in 2017 and have not been studied as much as the other sites, explaining why they do not appear in the other datasets. For the zones, they are additional areas that were probed with a Dutch soil auger and where vegetation cover was surveyed in order to increase spatial variability in our data and obtain a better understanding of the soil characteristics of the valley. For the dominating vegetation, in the case of mixed vegetation, it's a mix of evergreen shrubs, deciduous shurbs, graminoids, forbs, mosses and sphagnum in different proportions. Gagnon, S. and M. Allard (2020), Changes in ice-wedge activity over 25 years of climate change near Salluit, Nunavik (Northern Québec, Canada), Permafrost and Periglacial Processes, doi: 10.1002/ppp.2030. Kasper, J.N. and M. Allard (2001), Late-Holocene climatic changes as detected by the growth and decay of ice wedges on the southern shore of Hudson Strait, northern Québec, Canada, The Holocen, doi: 10.1191/095968301680223512.

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