{"refrec":{"BRefID":289367,"RR":"<b>Kremp, A.; Godhe, A.; Egardt, J.; Dupont, S.; Suikkanen, S.; Casabianca, S.; Penna, A.</b> (2012). Intraspecific variability in the response of bloom-forming marine microalgae to changed climate conditions. <i>Ecol. Evol. 2(6)</i>: 1195-1207. <a href=\"https://dx.doi.org/10.1002/ece3.245\" target=\"_blank\">https://dx.doi.org/10.1002/ece3.245</a>","BEntID":281404,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Ecol. Evol. 2(6)</i>: 1195-1207. <a href=\"https://dx.doi.org/10.1002/ece3.245\" target=\"_blank\">https://dx.doi.org/10.1002/ece3.245</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Kremp, A.; Godhe, A.; Egardt, J.; Dupont, S.; Suikkanen, S.; Casabianca, S.; Penna, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Kremp, A. <i>et al.</i>","Englishabstract":"Phytoplankton populations can display high levels of genetic diversity that, when reflected by phenotypic variability, may stabilize a species response to environmental changes. We studied the effects of increased temperature and CO<sub>2</sub> availability as predicted consequences of global change, on 16 genetically different isolates of the diatom <i>Skeletonema marinoi</i> from the Adriatic Sea and the Skagerrak (North Sea), and on eight strains of the PST (paralytic shellfish toxin)-producing dinoflagellate <i>Alexandrium ostenfeldii</i> from the Baltic Sea. Maximum growth rates were estimated in batch cultures of acclimated isolates grown for five to 10 generations in a factorial design at 20 and 24°C, and present day and next century applied atmospheric <i>p</i>CO<sub>2</sub>, respectively. In both species, individual strains were affected in different ways by increased temperature and <i>p</i>CO<sub>2</sub>. The strongest response variability, buffering overall effects, was detected among Adriatic <i>S. marinoi</i> strains. Skagerrak strains showed a more uniform response, particularly to increased temperature, with an overall positive effect on growth. Increased temperature also caused a general growth stimulation in <i>A. ostenfeldii</i>, despite notable variability in strain-specific response patterns. Our data revealed a significant relationship between strain-specific growth rates and the impact of <i>p</i>CO<sub>2</sub> on growth—slow growing cultures were generally positively affected, while fast growing cultures showed no or negative responses to increased <i>p</i>CO<sub>2</sub>. Toxin composition of <i>A. ostenfeldii</i> was consistently altered by elevated temperature and increased CO<sub>2</sub> supply in the tested strains, resulting in overall promotion of saxitoxin production by both treatments. Our findings suggest that phenotypic variability within populations plays an important role in the adaptation of phytoplankton to changing environments, potentially attenuating short-term effects and forming the basis for selection. In particular, <i>A. ostenfeldii</i> blooms may expand and increase in toxicity under increased water temperature and atmospheric <i>p</i>CO<sub>2</sub> conditions, with potentially severe consequences for the coastal ecosystem.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Intraspecific variability in the response of bloom-forming marine microalgae to changed climate conditions","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-18 01:32:00.597873","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Adaptation; CO2; culture experiments; growth; phenotypic variability;phycotoxins; phytoplankton; temperature","OtherDescriptors":null,"Notes":null,"AnaPub":2012,"MonPub":null,"DateUpdate":"2017-09-21","DateCreate":"2017-09-18","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000312447900009","VABBcode":null,"OpenAcc":1,"DOI":"10.1002/ece3.245"},"refs":null,"anarec":{"AnaID":289367,"PubliDate":2012,"Pagination":"1195-1207","XtraPublOfAnaID":null,"ISBN":null,"Volume":"2","Issue":"6","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":212989,"SerRR":"Ecology and Evolution. 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