{"refrec":{"BRefID":35576,"RR":"<b>Weisse, T.; Tande, K.; Verity, P.; Hansen, F.; Gieskes, W.</b> (1994). The trophic significance of <i>Phaeocystis</i> blooms. <i>J. Mar. Syst. 5(1)</i>: 67-79. <a href=\"https://dx.doi.org/10.1016/0924-7963(94)90017-5\" target=\"_blank\">https://dx.doi.org/10.1016/0924-7963(94)90017-5</a>","BEntID":35576,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Mar. Syst. 5(1)</i>: 67-79. <a href=\"https://dx.doi.org/10.1016/0924-7963(94)90017-5\" target=\"_blank\">https://dx.doi.org/10.1016/0924-7963(94)90017-5</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Weisse, T.; Tande, K.; Verity, P.; Hansen, F.; Gieskes, W.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Weisse, T. <i>et al.</i>","Englishabstract":"Both colonies and solitary cells of the prymnesiophyte <i>Phaeocystis</i> are ingested by a wide array of marine vertebrates. Grazers include protozoa, bivalves, amphipods, euphausiids and many copepod species. Common fish species such as mackerel (<i>Scomber scrombrus</i>) and flounder (<i>Pleuronectus flesus</i>) have also been reported to feed upon <i>Phaeocystis</i>. While qualitative observations on the potential trophic significance of Phaeocystis exist for a long time, attempts to quantity feeding rates on <i>Phaeocystis</i> have begun only during the last decade. In feeding experiments, copepods have received most attention. May copepod species appear to consume <i>Phaeocystis</i> colonies and solitary cells in the North Atlantic and in polar seas. Ingestion rates are highly variable depending on size and physiological state of Phaeocystis as well as on copepod species. Within the same species, large variations in individual feeding rates have been reported from different areas and investigators. When <i>Phaeocystis</i> co-occurs with larger amounts of diatoms, the latter seem to be preferred by some copepod species while others do not select against <i>Phaeocystis</i>. At present it is unclear whether this is primarily due to unsuitable size of<i>Phaeocystis</i> or because it is poor quality food. The relative nutritive vale of <i>Phaeocystis</i> single cells and colonies should be investigated in more detail. Feeding of protozoa on <i>Phaeocystis</i> has been little studied. Ciliates and the giant dinoflagellate <i>Noctiluca</i> are known to consume <i>Phaeocystis</i> solitary cells. Protozoa might efficiently control <i>Phaeocystis</i> blooms during their initial phases when the share of solitary cells relative to total <i>Phaeocystis</i> biomass is higher than during later stages of the bloom. By switching their food preference towards heterotrophic food, copepods might benefit from enhanced protozoan biomass during <i>Phaeocystis</i> blooms. The potential succession of protozoan and metazoan grazers in the course of a Phaeocystis bloom awaits further research.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The trophic significance of <i>Phaeocystis</i> blooms","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-02 01:31:23.629729","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1994,"MonPub":null,"DateUpdate":"2023-06-26","DateCreate":"2003-06-13","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:A1994NJ88300006","VABBcode":null,"OpenAcc":1,"DOI":"10.1016/0924-7963(94)90017-5"},"refs":null,"anarec":{"AnaID":35576,"PubliDate":1994,"Pagination":"67-79","XtraPublOfAnaID":null,"ISBN":null,"Volume":"5","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43079,"SerRR":"Journal of Marine Systems. 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