The effects of ocean acidification and siderophore additions on trace-metal dynamics during an Emiliania Huxleyi- dominated bloom in a coastal mesocosm experiment
The combined impacts of high CO2 and changes in trace metal availability on plankton remain largely unknown. A 22 days mesocosm experiment was carried out in the Raunefjord, off Bergen, Norway (June 2012) to investigate the interactive effects of increased CO2 and changes in iron availability in the...
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ftunivmalaga:oai:riuma.uma.es:10630/7766 2023-07-16T04:00:16+02:00 The effects of ocean acidification and siderophore additions on trace-metal dynamics during an Emiliania Huxleyi- dominated bloom in a coastal mesocosm experiment Lorenzo, M. Rosario Maldonado, Maria T. Lazaro, Francisco J. Cullen, Jay T. Segovia-Azcorra, María 2014-06 http://hdl.handle.net/10630/7766 eng eng IMBER Open Science Bergen (Noruega) 22-27 Junio 2014 http://hdl.handle.net/10630/7766 info:eu-repo/semantics/openAccess Ciclos biogeoquímicos Fitoplancton marino Mesocosm Ocean Acidification Dissolved Iron Dissolved Copper Particulate metals Desferoxamine B info:eu-repo/semantics/conferenceObject 2014 ftunivmalaga 2023-06-27T23:16:51Z The combined impacts of high CO2 and changes in trace metal availability on plankton remain largely unknown. A 22 days mesocosm experiment was carried out in the Raunefjord, off Bergen, Norway (June 2012) to investigate the interactive effects of increased CO2 and changes in iron availability in the pelagic community. Twelve mesocosms covered by PAR and UVR transparent lids were used. The CO2 treatments consisted of present (LC; 390 ppmV) and predicted levels for year 2100 (HC; 900 ppmV). On day 7, half of the mesocoms were amended with the siderophore desferoxamine B (DFB) at 70 nM (final concentration). We studied changes in dissolved Cu (dCu) and Fe (dFe), and in the elemental composition of particles. Dissolved Fe and dCu were measured by chemiluminescence flow injection analysis, while particulate metals were determined by high-resolution inductively coupled mass spectrometry. The metals were normalised to P and Al to evaluate the relative influence of biotic and abiotic sources. Samples were taken throughout a bloom of the coccolithophore E. huxleyi. Further details will be discussed. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech Conference Object Ocean acidification RIUMA - Repositorio Institucional de la Universidad de Málaga Norway Bergen |
institution |
Open Polar |
collection |
RIUMA - Repositorio Institucional de la Universidad de Málaga |
op_collection_id |
ftunivmalaga |
language |
English |
topic |
Ciclos biogeoquímicos Fitoplancton marino Mesocosm Ocean Acidification Dissolved Iron Dissolved Copper Particulate metals Desferoxamine B |
spellingShingle |
Ciclos biogeoquímicos Fitoplancton marino Mesocosm Ocean Acidification Dissolved Iron Dissolved Copper Particulate metals Desferoxamine B Lorenzo, M. Rosario Maldonado, Maria T. Lazaro, Francisco J. Cullen, Jay T. Segovia-Azcorra, María The effects of ocean acidification and siderophore additions on trace-metal dynamics during an Emiliania Huxleyi- dominated bloom in a coastal mesocosm experiment |
topic_facet |
Ciclos biogeoquímicos Fitoplancton marino Mesocosm Ocean Acidification Dissolved Iron Dissolved Copper Particulate metals Desferoxamine B |
description |
The combined impacts of high CO2 and changes in trace metal availability on plankton remain largely unknown. A 22 days mesocosm experiment was carried out in the Raunefjord, off Bergen, Norway (June 2012) to investigate the interactive effects of increased CO2 and changes in iron availability in the pelagic community. Twelve mesocosms covered by PAR and UVR transparent lids were used. The CO2 treatments consisted of present (LC; 390 ppmV) and predicted levels for year 2100 (HC; 900 ppmV). On day 7, half of the mesocoms were amended with the siderophore desferoxamine B (DFB) at 70 nM (final concentration). We studied changes in dissolved Cu (dCu) and Fe (dFe), and in the elemental composition of particles. Dissolved Fe and dCu were measured by chemiluminescence flow injection analysis, while particulate metals were determined by high-resolution inductively coupled mass spectrometry. The metals were normalised to P and Al to evaluate the relative influence of biotic and abiotic sources. Samples were taken throughout a bloom of the coccolithophore E. huxleyi. Further details will be discussed. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech |
format |
Conference Object |
author |
Lorenzo, M. Rosario Maldonado, Maria T. Lazaro, Francisco J. Cullen, Jay T. Segovia-Azcorra, María |
author_facet |
Lorenzo, M. Rosario Maldonado, Maria T. Lazaro, Francisco J. Cullen, Jay T. Segovia-Azcorra, María |
author_sort |
Lorenzo, M. Rosario |
title |
The effects of ocean acidification and siderophore additions on trace-metal dynamics during an Emiliania Huxleyi- dominated bloom in a coastal mesocosm experiment |
title_short |
The effects of ocean acidification and siderophore additions on trace-metal dynamics during an Emiliania Huxleyi- dominated bloom in a coastal mesocosm experiment |
title_full |
The effects of ocean acidification and siderophore additions on trace-metal dynamics during an Emiliania Huxleyi- dominated bloom in a coastal mesocosm experiment |
title_fullStr |
The effects of ocean acidification and siderophore additions on trace-metal dynamics during an Emiliania Huxleyi- dominated bloom in a coastal mesocosm experiment |
title_full_unstemmed |
The effects of ocean acidification and siderophore additions on trace-metal dynamics during an Emiliania Huxleyi- dominated bloom in a coastal mesocosm experiment |
title_sort |
effects of ocean acidification and siderophore additions on trace-metal dynamics during an emiliania huxleyi- dominated bloom in a coastal mesocosm experiment |
publishDate |
2014 |
url |
http://hdl.handle.net/10630/7766 |
geographic |
Norway Bergen |
geographic_facet |
Norway Bergen |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
IMBER Open Science Bergen (Noruega) 22-27 Junio 2014 http://hdl.handle.net/10630/7766 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1771548892589981696 |