Table 1. Summary of station characteristics.
| CBL11 | CBL13 | H17 | H29 | H33 | |
|---|---|---|---|---|---|
| Date occupied (month/date/year) | 8/2/2013 | 8/6/2013 | 8/4/2013 | 8/9/2013 | 8/10/2013 |
| Depth (m) | 47 | 50 | 41 | 66 | 50 |
| Latitude (°N) | 72.1033 | 71.2982 | 71.9913 | 71.9286 | 71.8228 |
| Longitude (°W) | 165.4556 | 161.6887 | 163.3834 | 158.3279 | 159.6097 |
| Sediment C:N (mol:mol) | 8.2 | 9.0 | 8.2 | 8.6 | 9.6 |
| Sediment OC (%) | 0.90 | 1.79 | 0.65 | 1.51 | 1.24 |
| Sediment TN (%) | 0.14 | 0.23 | 0.09 | 0.21 | 0.15 |
| Porewater NH4+ (μM) | 85.5±35.2 | 38.7±2.1 | 70.5±6.8 | 61.6±3.8 | 76.5±7.7 |
| Bottom salinity | 32.7 | 32.7 | 32.7 | 32.8 | 32.7 |
| Bottom temperature (°C) | −1.6 | −1.7 | −1.6 | −1.6 | −1.7 |
| Bottom NO3− (μM) | 5.2 | 4.7 | 5.1 | 5.5 | 6.8 |
| Bottom NH4+ (μM) | 2.6 | 1.6 | 1.7 | 1.4 | 2.4 |
| Bottom DO (% saturation) | 83.9 | 74.3 | 82.8 | 79.2 | 75.5 |
Sediment C:N, organic carbon (OC), and total nitrogen (TN) for top 2 cm. Sediment porewater NH4+ (mean±s.e.m.) collected from top 5 cm (n=2). Bottom water temperature, salinity, nutrients and dissolved oxygen (DO) measured ∼3 m from seafloor.