Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach
Recent studies on the impacts of ocean acidification on pelagic communities have identified changes in carbon to nutrient dynamics with related shifts in elemental stoichiometry. In principle, mesocosm experiments provide the opportunity of determining temporal dynamics of all relevant carbon and nu...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications (EGU)
2013
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/21246/ https://oceanrep.geomar.de/id/eprint/21246/1/bg-10-3109-2013.pdf https://doi.org/10.5194/bg-10-3109-2013 |
id |
ftoceanrep:oai:oceanrep.geomar.de:21246 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:21246 2023-05-15T14:27:46+02:00 Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach Czerny, Jan Schulz, Kai G. Boxhammer, Tim Bellerby, R. G. J. Büdenbender, Jan Engel, Anja Krug, Sebastian Ludwig, Andrea Nachtigall, Kerstin Nondal, G. Niehoff, B. Silyakova, A. Riebesell, Ulf 2013 text https://oceanrep.geomar.de/id/eprint/21246/ https://oceanrep.geomar.de/id/eprint/21246/1/bg-10-3109-2013.pdf https://doi.org/10.5194/bg-10-3109-2013 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/21246/1/bg-10-3109-2013.pdf Czerny, J., Schulz, K. G., Boxhammer, T. , Bellerby, R. G. J., Büdenbender, J., Engel, A. , Krug, S., Ludwig, A., Nachtigall, K., Nondal, G., Niehoff, B., Silyakova, A. and Riebesell, U. (2013) Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach. Open Access Biogeosciences (BG), 10 (5). pp. 3109-3125. DOI 10.5194/bg-10-3109-2013 <https://doi.org/10.5194/bg-10-3109-2013>. doi:10.5194/bg-10-3109-2013 cc_by info:eu-repo/semantics/openAccess Article PeerReviewed info:eu-repo/semantics/article 2013 ftoceanrep https://doi.org/10.5194/bg-10-3109-2013 2023-04-07T15:09:13Z Recent studies on the impacts of ocean acidification on pelagic communities have identified changes in carbon to nutrient dynamics with related shifts in elemental stoichiometry. In principle, mesocosm experiments provide the opportunity of determining temporal dynamics of all relevant carbon and nutrient pools and, thus, calculating elemental budgets. In practice, attempts to budget mesocosm enclosures are often hampered by uncertainties in some of the measured pools and fluxes, in particular due to uncertainties in constraining air–sea gas exchange, particle sinking, and wall growth. In an Arctic mesocosm study on ocean acidification applying KOSMOS (Kiel Off-Shore Mesocosms for future Ocean Simulation), all relevant element pools and fluxes of carbon, nitrogen and phosphorus were measured, using an improved experimental design intended to narrow down the mentioned uncertainties. Water-column concentrations of particulate and dissolved organic and inorganic matter were determined daily. New approaches for quantitative estimates of material sinking to the bottom of the mesocosms and gas exchange in 48 h temporal resolution as well as estimates of wall growth were developed to close the gaps in element budgets. However, losses elements from the budgets into a sum of insufficiently determined pools were detected, and are principally unavoidable in mesocosm investigation. The comparison of variability patterns of all single measured datasets revealed analytic precision to be the main issue in determination of budgets. Uncertainties in dissolved organic carbon (DOC), nitrogen (DON) and particulate organic phosphorus (POP) were much higher than the summed error in determination of the same elements in all other pools. With estimates provided for all other major elemental pools, mass balance calculations could be used to infer the temporal development of DOC, DON and POP pools. Future elevated pCO2 was found to enhance net autotrophic community carbon uptake in two of the three experimental phases but did not ... Article in Journal/Newspaper Arctic Arctic Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Biogeosciences 10 5 3109 3125 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Recent studies on the impacts of ocean acidification on pelagic communities have identified changes in carbon to nutrient dynamics with related shifts in elemental stoichiometry. In principle, mesocosm experiments provide the opportunity of determining temporal dynamics of all relevant carbon and nutrient pools and, thus, calculating elemental budgets. In practice, attempts to budget mesocosm enclosures are often hampered by uncertainties in some of the measured pools and fluxes, in particular due to uncertainties in constraining air–sea gas exchange, particle sinking, and wall growth. In an Arctic mesocosm study on ocean acidification applying KOSMOS (Kiel Off-Shore Mesocosms for future Ocean Simulation), all relevant element pools and fluxes of carbon, nitrogen and phosphorus were measured, using an improved experimental design intended to narrow down the mentioned uncertainties. Water-column concentrations of particulate and dissolved organic and inorganic matter were determined daily. New approaches for quantitative estimates of material sinking to the bottom of the mesocosms and gas exchange in 48 h temporal resolution as well as estimates of wall growth were developed to close the gaps in element budgets. However, losses elements from the budgets into a sum of insufficiently determined pools were detected, and are principally unavoidable in mesocosm investigation. The comparison of variability patterns of all single measured datasets revealed analytic precision to be the main issue in determination of budgets. Uncertainties in dissolved organic carbon (DOC), nitrogen (DON) and particulate organic phosphorus (POP) were much higher than the summed error in determination of the same elements in all other pools. With estimates provided for all other major elemental pools, mass balance calculations could be used to infer the temporal development of DOC, DON and POP pools. Future elevated pCO2 was found to enhance net autotrophic community carbon uptake in two of the three experimental phases but did not ... |
format |
Article in Journal/Newspaper |
author |
Czerny, Jan Schulz, Kai G. Boxhammer, Tim Bellerby, R. G. J. Büdenbender, Jan Engel, Anja Krug, Sebastian Ludwig, Andrea Nachtigall, Kerstin Nondal, G. Niehoff, B. Silyakova, A. Riebesell, Ulf |
spellingShingle |
Czerny, Jan Schulz, Kai G. Boxhammer, Tim Bellerby, R. G. J. Büdenbender, Jan Engel, Anja Krug, Sebastian Ludwig, Andrea Nachtigall, Kerstin Nondal, G. Niehoff, B. Silyakova, A. Riebesell, Ulf Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach |
author_facet |
Czerny, Jan Schulz, Kai G. Boxhammer, Tim Bellerby, R. G. J. Büdenbender, Jan Engel, Anja Krug, Sebastian Ludwig, Andrea Nachtigall, Kerstin Nondal, G. Niehoff, B. Silyakova, A. Riebesell, Ulf |
author_sort |
Czerny, Jan |
title |
Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach |
title_short |
Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach |
title_full |
Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach |
title_fullStr |
Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach |
title_full_unstemmed |
Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach |
title_sort |
implications of elevated co2 on pelagic carbon fluxes in an arctic mesocosm study – an elemental mass balance approach |
publisher |
Copernicus Publications (EGU) |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/21246/ https://oceanrep.geomar.de/id/eprint/21246/1/bg-10-3109-2013.pdf https://doi.org/10.5194/bg-10-3109-2013 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Ocean acidification |
genre_facet |
Arctic Arctic Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/21246/1/bg-10-3109-2013.pdf Czerny, J., Schulz, K. G., Boxhammer, T. , Bellerby, R. G. J., Büdenbender, J., Engel, A. , Krug, S., Ludwig, A., Nachtigall, K., Nondal, G., Niehoff, B., Silyakova, A. and Riebesell, U. (2013) Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach. Open Access Biogeosciences (BG), 10 (5). pp. 3109-3125. DOI 10.5194/bg-10-3109-2013 <https://doi.org/10.5194/bg-10-3109-2013>. doi:10.5194/bg-10-3109-2013 |
op_rights |
cc_by info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-10-3109-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
5 |
container_start_page |
3109 |
op_container_end_page |
3125 |
_version_ |
1766301682426183680 |