Online Resource 5

Article title: Seasonal dynamics of algal and bacterial communities in Arctic sea ice under variable snow cover

Journal name: Polar Biology

Authors: K. Campbell*, C.J. Mundy, C. Belzile, A. Delaforge and S. Rysgaard

*Centre for Earth Observation Science, Faculty of Environment, Earth and Resources, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2.

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Pearson correlation coefficients (top)—including p-values (middle) and sample size (bottom) of correlations—of picoeukaryote and nanoeukaryote abundance measured using flow cytometry (PicoFC, NanoFC) or estimated from light microscopy (PicoLM, NanoLM), average nanoeukaryote abundance of measurements from flow cytomtery and light microscopy (NanoAVG) and abundance of microeukaryotes estimated from light microscopy (MicroLM), with environmental parameters (see text for definitions) under thin snow cover. Missing data has been excluded pairwise and correlations of significance (p<0.05) are in bold.

Parameter / Flow Cytometry / Light Microscopy / NanoAVG
PicoFCa / PicoFC / NanoFC / NanoLM / MicroLM
Independent Environmental Parameters / NOx / -0.049
0.868
14 / -0.128
0.651
15 / -0.655
0.007
15 / -0.674
0.006
15 / -0.415
0.124
15 / -0.685
0.005
15
Ez(June) / 0.367
0.241
12 / 0.196
0.521
13 / 0.799
0.001
13 / 0.693
0.009
13 / 0.413
0.161
13 / 0.753
0.003
13
Ez(PAR) / 0.344
0.330
10 / 0.168
0.622
11 / 0.815
0.002
11 / 0.776
0.005
11 / 0.453
0.161
11 / 0.804
0.003
11
Dependent Parameters / Chl a / 0.120
0.683
14 / 0.087
0.757
15 / 0.875
0
15 / 0.867
0
15 / 0.826
0
15 / 0.889
0
15
POC / -0.078
0.792
14 / -0.200
0.475
15 / 0.837
0
15 / 0.948
0
15 / 0.595
0.019
15 / 0.920
0
15
PPchla / -0.764
0.010
10 / -0.692
0.018
11 / 0.567
0.069
11 / 0.804
0.003
11 / -0.133
0.696
11 / 0.739
0.009
11