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Effect of increased CO<sub>2</sub> and iron levels on the marine plankton food web during a mesocosm experiment
dc.contributor.author | Segovia, MR | |
dc.date.accessioned | 2015-04-14T11:38:22Z | |
dc.date.available | 2015-04-14T11:38:22Z | |
dc.date.created | 2015 | |
dc.date.issued | 2015-04-14 | |
dc.identifier.uri | http://hdl.handle.net/10630/9655 | |
dc.description.abstract | A mesocosm experiment was carried out in the Raunefjord (Norway) during 25 days, to investigate the interactive effects of increased CO<sub>2</sub> and iron availability on the plankton community. The seawater carbonate system in the mesocosms was manipulated to achieve two different CO<sub>2</sub> levels, corresponding to the present (390 ppmv, LC) and to levels predicted for year 2100 (900 ppmv, HC), in combination with ambient and increased dissolved Fe (dFe) concentrations in a full factorial design. We observed a shift in the plankton community structure, initially dominated by picoeukaryotes and small nanoeukaryotes, changing to an <em>Emiliania huxleyi</em> dominated bloom. <em>E. huxleyi</em> and <em>Synechococcus</em> were the most sensitive organisms to changes in CO2 and Fe levels, being negatively affected by increased CO<sub>2</sub> and favoured by high dFe levels. Picoeukaryotes, large nanoplankton, viruses and ciliates abundances were not affected by changes in CO<sub>2</sub> or dFe levels. Bacterial abundance showed a significant positive response to high CO<sub>2</sub> but it was unaffected by dFe. Total mesozooplankton abundances did not change significantly. The relevance of these results within the global change scenario will be discussed. | es_ES |
dc.description.sponsorship | Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. | es_ES |
dc.language.iso | eng | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.subject | Fitoplancton marino | es_ES |
dc.subject.other | Marine biology | es_ES |
dc.subject.other | Mesocosm | es_ES |
dc.subject.other | Iron | es_ES |
dc.subject.other | Co2 | es_ES |
dc.subject.other | Phytoplankton | es_ES |
dc.title | Effect of increased CO<sub>2</sub> and iron levels on the marine plankton food web during a mesocosm experiment | es_ES |
dc.type | info:eu-repo/semantics/conferenceObject | es_ES |
dc.centro | Facultad de Ciencias | es_ES |
dc.relation.eventtitle | ASLO2015 | es_ES |
dc.relation.eventplace | Granada, España | es_ES |
dc.relation.eventdate | Febrero 2015 | es_ES |