Table 2 Sediment oxygen demand (SOD) rates for all stations in all seasons and across the four different treatments (mmol/m2/day). Numbers shown are average rates based on 5 replicates (6 in the case of December) ± standard deviation. For the three experimental treatments, i.e., with increased temperature and/or algae, percent changes compared to amb (ambient conditions) are written in parentheses with positive values indicating increased rates. Rates that were statistically significant from amb rates are indicated with an asterisk.

From: Benthic remineralization under future Arctic conditions and evaluating the potential for changes in carbon sequestration in warming sediments

station/season

amb

algae

warm

warm + algae

P1 Atlantic shelf - March

3.0 ± 0.8

5.1 ± 0.9 (69%)*

5.1 ± 0.6 (70%)*

7.1 ± 1.6 (138%)*

P1 Atlantic shelf - May

2.8 ± 0.5

4.0 ± 1.6 (42%)

3.6 ± 0.2 (27%)

4.2 ± 0.6 (50%)*

P1 Atlantic shelf - August

5.7 ± 1.0

3.8 ± 1.4 (-33%)

5.1 ± 0.8 (-10%)

5.0 ± 1.4 (-12%)

P4 Arctic shelf - March

2.6 ± 0.4

3.9 ± 0.7 (52%)*

3.7 ± 0.5 (43%)*

8.6 ± 2.2 (230%)*

P4 Arctic shelf - May

2.7 ± 0.5

3.6 ± 1.0 (32%)

2.6 ± 0.9 (-6%)

6.8 ± 1.8 (146%)*

P4 Arctic shelf - August

3.4 ± 1.9

5.5 ± 1.3 (63%)

4.0 ± 1.9 (18%)

9.3 ± 2.0 (176%)*

P4 Arctic shelf - December

2.9 ± 1.3

n/a

5.1 ± 1.3 (77%)

n/a

P6 Slope - March

1.4 ± 0.2

3.4 ± 1.0 (154%)*

1.3 ± 0.3 (-1%)

2.3 ± 0.9 (68%)

P6 Slope - May

0.7 ± 0.7

0.9 ± 1.1 (38%)

2.6 ± 2.9 (300%)

4.0 ± 1.8 (508%)*

P6 Slope - August

1.9 ± 0.6

3.6 ± 1.1 (88%)*

n/a

n/a

P6 Slope - December

1.6 ± 0.2

n/a

2.8 ± 0.5 (74%)*

n/a

P7 Basin - May

0.3 ± 0.5

2.7 ± 1.1 (758%)*

1.2 ± 2.4 (275%)

3.6 ± 2.5 (1032%)*

P7 Basin - August

4.4 ± 1.8

4.1 ± 1.4 (-8%)

n/a

n/a

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