Deep carbon export from a Southern Ocean iron-fertilized diatom bloom
Fertilization of the ocean by adding iron compounds has induced diatom-dominated phytoplankton blooms accompanied by considerable carbon dioxide drawdown in the ocean surface layer. However, because the fate of bloom biomass could not be adequately resolved in these experiments, the timescales of ca...
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2012
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Online Access: | https://oceanrep.geomar.de/id/eprint/14868/ https://oceanrep.geomar.de/id/eprint/14868/1/nature11229.pdf https://oceanrep.geomar.de/id/eprint/14868/2/nature11229-s1.pdf https://oceanrep.geomar.de/id/eprint/14868/3/nature11229-s2.pdf https://doi.org/10.1038/nature11229 |
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ftoceanrep:oai:oceanrep.geomar.de:14868 2023-05-15T13:45:31+02:00 Deep carbon export from a Southern Ocean iron-fertilized diatom bloom Smetacek, Victor Klaas, Christine Strass, Volker H. Assmy, Philipp Montresor, Marina Cisewski, Boris Savoye, Nicolas Webb, Adrian d’Ovidio, Francesco Arrieta, Jesús M. Bathmann, Ulrich Bellerby, Richard Berg, Gry Mine Croot, Peter Gonzalez, Santiago Henjes, Joachim Herndl, Gerhard J. Hoffmann, Linn J. Leach, Harry Losch, Martin Mills, Matthew M. Neill, Craig Peeken, Ilka Röttgers, Rüdiger Sachs, Oliver Sauter, Eberhard Schmidt, Maike M. Schwarz, Jill Terbrüggen, Anja Wolf-Gladrow, Dieter 2012 text https://oceanrep.geomar.de/id/eprint/14868/ https://oceanrep.geomar.de/id/eprint/14868/1/nature11229.pdf https://oceanrep.geomar.de/id/eprint/14868/2/nature11229-s1.pdf https://oceanrep.geomar.de/id/eprint/14868/3/nature11229-s2.pdf https://doi.org/10.1038/nature11229 en eng Nature Publishing Group https://oceanrep.geomar.de/id/eprint/14868/1/nature11229.pdf https://oceanrep.geomar.de/id/eprint/14868/2/nature11229-s1.pdf https://oceanrep.geomar.de/id/eprint/14868/3/nature11229-s2.pdf Smetacek, V., Klaas, C., Strass, V. H., Assmy, P., Montresor, M., Cisewski, B., Savoye, N., Webb, A., d’Ovidio, F., Arrieta, J. M., Bathmann, U., Bellerby, R., Berg, G. M., Croot, P., Gonzalez, S., Henjes, J., Herndl, G. J., Hoffmann, L. J. , Leach, H., Losch, M., Mills, M. M., Neill, C., Peeken, I., Röttgers, R., Sachs, O., Sauter, E., Schmidt, M. M., Schwarz, J., Terbrüggen, A. and Wolf-Gladrow, D. (2012) Deep carbon export from a Southern Ocean iron-fertilized diatom bloom. Nature, 487 (7407). pp. 313-319. DOI 10.1038/nature11229 <https://doi.org/10.1038/nature11229>. doi:10.1038/nature11229 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2012 ftoceanrep https://doi.org/10.1038/nature11229 2023-04-07T15:04:32Z Fertilization of the ocean by adding iron compounds has induced diatom-dominated phytoplankton blooms accompanied by considerable carbon dioxide drawdown in the ocean surface layer. However, because the fate of bloom biomass could not be adequately resolved in these experiments, the timescales of carbon sequestration from the atmosphere are uncertain. Here we report the results of a five-week experiment carried out in the closed core of a vertically coherent, mesoscale eddy of the Antarctic Circumpolar Current, during which we tracked sinking particles from the surface to the deep-sea floor. A large diatom bloom peaked in the fourth week after fertilization. This was followed by mass mortality of several diatom species that formed rapidly sinking, mucilaginous aggregates of entangled cells and chains. Taken together, multiple lines of evidence—although each with important uncertainties—lead us to conclude that at least half the bloom biomass sank far below a depth of 1,000 metres and that a substantial portion is likely to have reached the sea floor. Thus, iron-fertilized diatom blooms may sequester carbon for timescales of centuries in ocean bottom water and for longer in the sediments. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Southern Ocean The Antarctic Nature 487 7407 313 319 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Fertilization of the ocean by adding iron compounds has induced diatom-dominated phytoplankton blooms accompanied by considerable carbon dioxide drawdown in the ocean surface layer. However, because the fate of bloom biomass could not be adequately resolved in these experiments, the timescales of carbon sequestration from the atmosphere are uncertain. Here we report the results of a five-week experiment carried out in the closed core of a vertically coherent, mesoscale eddy of the Antarctic Circumpolar Current, during which we tracked sinking particles from the surface to the deep-sea floor. A large diatom bloom peaked in the fourth week after fertilization. This was followed by mass mortality of several diatom species that formed rapidly sinking, mucilaginous aggregates of entangled cells and chains. Taken together, multiple lines of evidence—although each with important uncertainties—lead us to conclude that at least half the bloom biomass sank far below a depth of 1,000 metres and that a substantial portion is likely to have reached the sea floor. Thus, iron-fertilized diatom blooms may sequester carbon for timescales of centuries in ocean bottom water and for longer in the sediments. |
format |
Article in Journal/Newspaper |
author |
Smetacek, Victor Klaas, Christine Strass, Volker H. Assmy, Philipp Montresor, Marina Cisewski, Boris Savoye, Nicolas Webb, Adrian d’Ovidio, Francesco Arrieta, Jesús M. Bathmann, Ulrich Bellerby, Richard Berg, Gry Mine Croot, Peter Gonzalez, Santiago Henjes, Joachim Herndl, Gerhard J. Hoffmann, Linn J. Leach, Harry Losch, Martin Mills, Matthew M. Neill, Craig Peeken, Ilka Röttgers, Rüdiger Sachs, Oliver Sauter, Eberhard Schmidt, Maike M. Schwarz, Jill Terbrüggen, Anja Wolf-Gladrow, Dieter |
spellingShingle |
Smetacek, Victor Klaas, Christine Strass, Volker H. Assmy, Philipp Montresor, Marina Cisewski, Boris Savoye, Nicolas Webb, Adrian d’Ovidio, Francesco Arrieta, Jesús M. Bathmann, Ulrich Bellerby, Richard Berg, Gry Mine Croot, Peter Gonzalez, Santiago Henjes, Joachim Herndl, Gerhard J. Hoffmann, Linn J. Leach, Harry Losch, Martin Mills, Matthew M. Neill, Craig Peeken, Ilka Röttgers, Rüdiger Sachs, Oliver Sauter, Eberhard Schmidt, Maike M. Schwarz, Jill Terbrüggen, Anja Wolf-Gladrow, Dieter Deep carbon export from a Southern Ocean iron-fertilized diatom bloom |
author_facet |
Smetacek, Victor Klaas, Christine Strass, Volker H. Assmy, Philipp Montresor, Marina Cisewski, Boris Savoye, Nicolas Webb, Adrian d’Ovidio, Francesco Arrieta, Jesús M. Bathmann, Ulrich Bellerby, Richard Berg, Gry Mine Croot, Peter Gonzalez, Santiago Henjes, Joachim Herndl, Gerhard J. Hoffmann, Linn J. Leach, Harry Losch, Martin Mills, Matthew M. Neill, Craig Peeken, Ilka Röttgers, Rüdiger Sachs, Oliver Sauter, Eberhard Schmidt, Maike M. Schwarz, Jill Terbrüggen, Anja Wolf-Gladrow, Dieter |
author_sort |
Smetacek, Victor |
title |
Deep carbon export from a Southern Ocean iron-fertilized diatom bloom |
title_short |
Deep carbon export from a Southern Ocean iron-fertilized diatom bloom |
title_full |
Deep carbon export from a Southern Ocean iron-fertilized diatom bloom |
title_fullStr |
Deep carbon export from a Southern Ocean iron-fertilized diatom bloom |
title_full_unstemmed |
Deep carbon export from a Southern Ocean iron-fertilized diatom bloom |
title_sort |
deep carbon export from a southern ocean iron-fertilized diatom bloom |
publisher |
Nature Publishing Group |
publishDate |
2012 |
url |
https://oceanrep.geomar.de/id/eprint/14868/ https://oceanrep.geomar.de/id/eprint/14868/1/nature11229.pdf https://oceanrep.geomar.de/id/eprint/14868/2/nature11229-s1.pdf https://oceanrep.geomar.de/id/eprint/14868/3/nature11229-s2.pdf https://doi.org/10.1038/nature11229 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/14868/1/nature11229.pdf https://oceanrep.geomar.de/id/eprint/14868/2/nature11229-s1.pdf https://oceanrep.geomar.de/id/eprint/14868/3/nature11229-s2.pdf Smetacek, V., Klaas, C., Strass, V. H., Assmy, P., Montresor, M., Cisewski, B., Savoye, N., Webb, A., d’Ovidio, F., Arrieta, J. M., Bathmann, U., Bellerby, R., Berg, G. M., Croot, P., Gonzalez, S., Henjes, J., Herndl, G. J., Hoffmann, L. J. , Leach, H., Losch, M., Mills, M. M., Neill, C., Peeken, I., Röttgers, R., Sachs, O., Sauter, E., Schmidt, M. M., Schwarz, J., Terbrüggen, A. and Wolf-Gladrow, D. (2012) Deep carbon export from a Southern Ocean iron-fertilized diatom bloom. Nature, 487 (7407). pp. 313-319. DOI 10.1038/nature11229 <https://doi.org/10.1038/nature11229>. doi:10.1038/nature11229 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/nature11229 |
container_title |
Nature |
container_volume |
487 |
container_issue |
7407 |
container_start_page |
313 |
op_container_end_page |
319 |
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1766226230207578112 |