WorkPackage 2: The Biological Carbon Pump
Leaders: Richard Sanders (NOCS, UK); Christina De la Rocha (UBO-CNRS)
The workpackage will advance the state of the art by producing new observations of particle formation, aggregation, sinking and decomposition in a range of marine ecosystems, focussed on the North Atlantic basin. Within the North Atlantic there are significant uncertainties regarding how deep particle flux is mediated with a significant role proposed for biomineralising protists in the large autumn and spring fluxes of material which reaches the deep ocean (Lampitt et al., 2008, Martin et al., in press).
The possibility that changes in predation pressure may have seriously impacted deep flux is therefore open. A particular feature of the work proposed will be to evaluate the role of such biomineralising predatory organisms on deep carbon flux. We will make new observations to resolve how environmental conditions including plankton community structure (composition and size) and grazing drive aggregate formation, stability and sinking rate. These will be combined with literature data to generate new particle flux algorithms, which will be tested in 1D models of plankton ecology, and particle flux and then incorporated into 3D models of the biological ocean carbon cycle in WP6 Basin-scale Integrated Modelling.
Large scale estimates of biological carbon sequestration will be made using field data from spatial surveys and these estimates compared to state of the art numerical model based estimates to assess our current skill in simulating oceanic biological carbon sequestration. Collaboration with WP8 Advancing Ocean Management will assess the current value of the BCP, how this may change in the future and how management decisions regarding the management of the marine ecosystem may affect this future valuation.
Specific objectives are as follows:
D2.1) Report on WP2 meeting at Kick off meeting on algorithms (Task 2.4) and data needs (WP1): [Month 6 - June 2011; Resp.: Richard Sanders & Adrian Martin, NOC]
EURO-BASIN will publish 100% of its research via Open Access in support of Horizon 2020 policy on Open Science. The orange icon below provides open access to the postprint (after all peer-review corrections) and the DOI leads to the publisher's version (restricted access). Full list of EURO-BASIN Open Access Publications in OpenAIRE
Frigstad, H., T. Andersen, R. G. J. Bellerby, A. Silyakova, and D. O. Hessen (2014), Variation in the seston C:N ratio of the Arctic Ocean and pan-Arctic shelves, Journal of Marine Systems, 129(0), 214-223.
Giering, S. L. C., Richard Sanders, Richard S. Lampitt, Thomas R. Anderson, Christian Tamburini, Mehdi Boutrif, Mikhail V. Zubkov, Chris M. Marsay, Stephanie A. Henson,Kevin Saw, Kathryn Cook & Daniel J. Mayor (2014) Reconciliation of the carbon budget in the ocean’s twilight zone. Nature, 507, 480–483, doi:10.1038/nature13123
Le Moigne, F. A. C., Henson, S. A., Sanders, R. J., and Madsen, E. (2013b) Global database of surface ocean particulate organic carbon export fluxes diagnosed from the 234Th technique, Earth Syst. Sci. Data, 5, 295-304, doi:10.5194/essd-5-295-2013
Sanders, R., Stephanie A. Henson, Marja Koski, Christina L. De La Rocha, Stuart C. Painter, Alex J. Poulton, Jennifer Riley, Baris Salihoglu, Andre Visser, Andrew Yool, Richard Bellerby, Adrian P. Martin. 2014. The Biological Carbon Pump in the North Atlantic Progress in Oceanography, In Press,
K Schmidt, CL De La Rocha, M Gallinari, G Cortese (2014) Not all calcite ballast is created equal: differing effects of foraminiferan and coccolith calcite on the formation and sinking of aggregates. Biogeosciences 11 (1), 135-145
Koski Marja, Swalethorp Rasmus, Kjellerup Sanne, Nielsen Torkel Gissel (2014). The mystery of Microsetella: combination of sac- and broadcast-spawning in an Arctic fjord. Journal Of Plankton Research, 36(1), 259-264. http://dx.doi.org/10.1093/plankt/fbt117
Torres-Valdes, S et al. (2013): Compilation of downward flux observations from sediment trap deployments in the Atlantic Ocean - Contribution to EURO-BASIN's Data integration. doi:10.1594/PANGAEA.807946, Supplement to:
Torres-Valdes, Sinhue; Painter, Stuart; Martin, Adrian; Sanders, Richard J; Felden, Janine (2013): Fluxes of sedimenting material from sediment traps in the Atlantic Ocean. Earth System Science Data Discussion, 6, 541-595
Le Moigne, F. A. C., Gallinari, M., Laurenceau, E., and De La Rocha, C. L.: Enhanced rates of particulate organic matter remineralization by microzooplankton are diminished by added ballast minerals, Biogeosciences, 10, 5755-5765, doi:10.5194/bg-10-5755-2013
Silyakova, A. et al. 2013. Pelagic community production and carbon-nutrient stoichiometry
Frigstad, H., T. Andersen, D. O. Hessen, E. Jeansson, M. Skogen, L.Naustvoll, M. Miles, T. Johannessen, R. Bellerby 2013. Long-term trends in carbon, nutrients and stoichiometry in Norwegian coastal waters: Evidence of a regime shift, Progress in Oceanography, Vol 111, p. 113–124 http://dx.doi.org/10.1016/j.pocean.2013.01.006
L. Resplandy, A.P. Martin, F. Le Moigne, P. Martin, A. Aquilina, L. Mémery, M. Lévy, R. Sanders, 2012. How does dynamical spatial variability impact 234Th-derived estimates of organic export? Deep Sea Research Part I: Vol 68, October 2012, Pages 24–45
Jeansson, E., A. Olsen, T. Eldevik, I. Skjelvan, A. M. Omar, S. K. Lauvset, J. E. Ø. Nilsen, R. G. J. Bellerby, T. Johannessen, and E. Falck (2011), The Nordic Seas carbon budget: Sources, sinks, and uncertainties, Global Biogeochem. Cycles, 25, GB4010, doi:10.1029/2010GB003961.
Frigstad, H., Andersen, T., Hessen, D. O., Naustvoll, L.-J., Johnsen, T. M., and Bellerby, R. G. J. 2011. Seasonal variation in marine C:N:P stoichiometry: can the composition of seston explain stable Redfield ratios?, Biogeosciences, 8, 2917-2933, doi:10.5194/bg-8-2917-2011
WP2 Biological C Pump
(taking over from
The Workpackage is also co-lead by:
Research WorkPackages (WP) & Focus:
EURO-BASIN Deliverable Deadlines