2026-05-30T22:28:51Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/77662026-02-03T12:23:48Zcom_10630_2254col_10630_37959
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Lorenzo, M. Rosario
author
Maldonado, Maria T.
author
Lázaro, Francisco J.
author
Cullen, Jay T.
author
Segovia-Azcorra, María
2014-07-03T11:00:49Z
2014-07-03T11:00:49Z
2014-07-03
http://hdl.handle.net/10630/7766
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.
eng
Ciclos biogeoquímicos
Fitoplancton marino
The effects of ocean acidification and siderophore additions on trace-metal dynamics during an Emiliania Huxleyi- dominated bloom in a coastal mesocosm experiment
conference output
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URL
https://riuma.uma.es/bitstreams/3f58bea0-c2ca-4767-8585-9d6be6fc38c3/download
File
MD5
553378704cc23e50920098bab162a2ad
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application/pdf
Abstract_IMBER_Lorenzo_RIUMA.pdf
URL
https://riuma.uma.es/bitstreams/fde8eafc-a536-47a0-8086-6c41cc082f99/download
File
MD5
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text/plain
Abstract_IMBER_Lorenzo_RIUMA.pdf.txt