{"refrec":{"BRefID":258071,"RR":"<b>Engel, A.; Schulz, K.; Riebesell, U.; Bellerby, R.; Delille, B.; Schartau, M.</b> (2008). Effects of CO<sub>2</sub> on particle size distribution and phytoplankton abundance during a mesocosm bloom experiment (PeECE II). <i>Biogeosciences 5(2)</i>: 509-521. <a href=\"http://dx.doi.org/10.5194/bg-5-509-2008\" target=\"_blank\">http://dx.doi.org/10.5194/bg-5-509-2008</a>","BEntID":250081,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Biogeosciences 5(2)</i>: 509-521. <a href=\"http://dx.doi.org/10.5194/bg-5-509-2008\" target=\"_blank\">http://dx.doi.org/10.5194/bg-5-509-2008</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Engel, A.; Schulz, K.; Riebesell, U.; Bellerby, R.; Delille, B.; Schartau, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Engel, A. <i>et al.</i>","Englishabstract":"The influence of seawater carbon dioxide (CO<sub>2</sub>) concentration on the size distribution of suspended particles (2–60 µm) and on phytoplankton abundance was investigated during a mesocosm experiment at the large scale facility (LFS) in Bergen, Norway, in the frame of the Pelagic Ecosystem CO<sub>2</sub> Enrichment study (PeECE II). In nine outdoor enclosures the partial pressure of CO<sub>2</sub> in seawater was modified by an aeration system to simulate past (~190 µatm CO<sub>2</sub>), present (~370 µatm CO<sub>2</sub>) and future (~700 µatm CO<sub>2</sub>) CO<sub>2</sub> conditions in triplicates. Due to the initial addition of inorganic nutrients, phytoplankton blooms developed in all mesocosms and were monitored over a period of 19 days. Seawater samples were collected daily for analysing the abundance of suspended particles and phytoplankton with the Coulter Counter and with Flow Cytometry, respectively. During the bloom period, the abundance of small particles (<4 µm) significantly increased at past, and decreased at future CO<sub>2</sub> levels. At that time, a direct relationship between the total-surface-to-total-volume ratio of suspended particles and DIC concentration was determined for all mesocosms. Significant changes with respect to the CO<sub>2</sub> treatment were also observed in the phytoplankton community structure. While some populations such as diatoms seemed to be insensitive to the CO<sub>2</sub> treatment, others like <i>Micromonas spp</i>. increased with CO<sub>2</sub>, or showed maximum abundance at present day CO<sub>2</sub> (i.e. <i>Emiliania huxleyi</i>). The strongest response to CO<sub>2</sub> was observed in the abundance of small autotrophic nano-plankton that strongly increased during the bloom in the past CO<sub>2</sub> mesocosms. Together, changes in particle size distribution and phytoplankton community indicate a complex interplay between the ability of the cells to physiologically respond to changes in CO<sub>2</sub> and size selection. Size of cells is of general importance for a variety of processes in marine systems such as diffusion-limited uptake of substrates, resource allocation, predator-prey interaction, and gravitational settling. The observed changes in particle size distribution are therefore discussed with respect to biogeochemical cycling and ecosystem functioning.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Effects of CO<sub>2</sub> on particle size distribution and phytoplankton abundance during a mesocosm bloom experiment (PeECE II)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2008,"MonPub":null,"DateUpdate":"2016-06-22","DateCreate":"2016-05-29","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000255511200017","VABBcode":null,"OpenAcc":1,"DOI":"10.5194/bg-5-509-2008"},"refs":null,"anarec":{"AnaID":258071,"PubliDate":2008,"Pagination":"509-521","XtraPublOfAnaID":null,"ISBN":null,"Volume":"5","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":68092,"SerRR":"<b>Gattuso, J.P.; Kesselmeier, J. (Ed.)</b> Biogeosciences. Copernicus Publications: Göttingen.  ISSN 1726-4170; e-ISSN 1726-4189","StandardTitleSer":"Biogeosciences","ISSN":"1726-4170","AbbrevSer":"Biogeosciences","StandardTitleMon":null,"StartPage":509,"Pages":13,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Engel","Firstname":null,"Initials":"A.","Affiliation":"Alfred Wegener Inst Polar & Marine Res, Bremerhaven, Germany.","Discriminator":null,"CorporateFlag":0,"BEntID":250081,"AutID":228749,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Schulz","Firstname":null,"Initials":"K.","Affiliation":"IFM GEOMAR, Leibniz Inst Marine Sci, Kiel, Germany.","Discriminator":null,"CorporateFlag":0,"BEntID":250081,"AutID":228750,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Riebesell","Firstname":null,"Initials":"U.","Affiliation":"IFM GEOMAR, Leibniz Inst Marine Sci, Kiel, Germany.","Discriminator":null,"CorporateFlag":0,"BEntID":250081,"AutID":228751,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Bellerby","Firstname":null,"Initials":"R.","Affiliation":"Univ Bergen, Bjerknes Ctr Climate Res, Bergen, Norway.","Discriminator":null,"CorporateFlag":0,"BEntID":250081,"AutID":228752,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Delille","Firstname":"Bruno","Initials":"B.","Affiliation":"Unité d'Océanographie Chimique, MARE, Université de Liège","Discriminator":null,"CorporateFlag":0,"BEntID":250081,"AutID":142287,"OrderNr":5,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":"Université de Liège; 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