Transparent exopolymer particles and dissolved organic carbon production by Emiliania huxleyi exposed to different CO2 concentrations: a mesocosm experiment

• DOI: 10.3354/ame034093
• Publication Date: 2007-08-17T08:30:17Z
• Authors: A Engel; B Delille; S Jacquet; U Riebesell; E Rochelle-Newall; A Terbrüggen; I Zondervan
• Keywords: Exopolymer; Emiliania huxleyi; Mesocosm; Bloom

AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 34:93-104 (2004) - doi:10.3354/ame034093 Transparent exopolymer particles and dissolved organic carbon production by Emiliania huxleyi exposed different CO2 concentrations: a mesocosm experiment Anja Engel1,*, Bruno Delille2, Stéphan Jacquet3, Ulf Riebesell1, Emma Rochelle-Newall4, Terbrüggen1, Ingrid Zondervan1 1Alfred Wegener Institute for Polar- Marine Research, 27515 Bremerhaven, Germany 2Unité d¹Océanographie Chimique, Université de Liège, 4000 Belgium 3UMR CARRTEL, Station INRA d¹Hydrobiologie Lacustre, 74203 Thonon-les-Bains cedex, France 4Laboratoire Villefranche-sur-Mer, 06234 *Email: [e-mail] ABSTRACT: The role of transparent (TEP) (DOC) partitioning under conditions was examined during with coccolithophorid huxleyi. We designed 9 outdoor enclosures (~11 m3) simulate concentrations estimated ŒYear 2100¹ (~710 ppm CO2), Œpresent¹ (~410 CO2) Œglacial¹ (~190 environments, fertilized these nitrate phosphate favor bloom development. Our results showed fundamentally TEP DOC dynamics bloom. In all mesocosms, concentration increased after nutrient exhaustion accumulated steadily until end study. closely related abundance E. accounted an increase in POC 35 ± 2% onset limitation. normalized cell highest Year 2100 treatment. contrast, exhibited considerable short-term fluctuations throughout neither nor concentration. A statistically significant effect treatment on not determined. However, course bloom, 2 3 mesocosms 1 present but none glacial mesocosms. It is suggested that observed differences between were determined their bioavailability rapid response microbial food web may have obscured effects autotrophic cells. KEY WORDS: Emiliana · Dissolved Carbon overconsumption Redfield ratios Mesocosms Full article pdf format PreviousExport citation Tweet linkedIn Cited Published Vol. 34, No. 1. Online publication date: January 16, 2004 Print ISSN: 0948-3055; 1616-1564 Copyright © Inter-Research.