User Settings
Open AccessArticle10.1016/j.dsr2.2008.08.020

Primary productivity off the Antarctic coast from 30 degrees-80 degrees E; BROKE-West survey, 2006

KJ Westwood,F. Brian Griffiths,Klaus M Meiners,GD Williams-2010-01-01-eCite Digital Repository (University of Tasmania)
0

TL;DRAbstract

Primary productivity was measured in the Indian Sector of the Southern Ocean (30 degrees to 80 degrees E) as part of a multi-disciplinary study during austral summer: Baseline Research on Oceanography, Krill and the Environment, West (BROKE-West Survey, 2006). Gross integrated (0-150 m) productivity rates within the marginal ice zone (MIZ) were significantly higher than within the open ocean, with averages of 2110.2 +/- 1347.1 and 595.0 +/- 283.0 mg C m(-2) d(-1), respectively. In the MIZ, high productivity was associated with shallow mixed-layer depths and increased P-max up to 5.158 mg C (mg chl a) h(-1). High Si:N drawdown ratios in the open ocean (4.1 +/- 1.5) compared to the MIZ (2.2 +/- 0.79) also suggested that iron limitation was important for the control of productivity. This was supported by higher F-v/F-m ratios in the MIZ (0.50 +/- 0.11 above 40 m) compared to the open ocean (0.36 +/- 0.08). As well, in the open ocean there were regions of elevated productivity associated w

Chat with Paper

AI Agents for this Paper

Primary productivity was measured in the Indian Sector of the Southern Ocean (30 degrees to 80 degrees E) as part of a multi-disciplinary study during austral summer: Baseline Research on Oceanography, Krill and the Environment, West (BROKE-West Survey, 2006). Gross integrated (0-150 m) productivity rates within the marginal ice zone (MIZ) were significantly higher than within the open ocean, with averages of 2110.2 +/- 1347.1 and 595.0 +/- 283.0 mg C m(-2) d(-1), respectively. In the MIZ, high productivity was associated with shallow mixed-layer depths and increased P-max up to 5.158 mg C (mg chl a) h(-1). High Si:N drawdown ratios in the open ocean (4.1 +/- 1.5) compared to the MIZ (2.2 +/- 0.79) also suggested that iron limitation was important for the control of productivity. This was supported by higher F-v/F-m ratios in the MIZ (0.50 +/- 0.11 above 40 m) compared to the open ocean (0.36 +/- 0.08). As well, in the open ocean there were regions of elevated productivity associated w

Keywords

ProductivityOceanographyPycnoclinePrimary productivityUpwellingEnvironmental scienceDrawdown (hydrology)Geology

Chat

Click to start Chat