{"refrec":{"BRefID":16317,"RR":"<b>Uhlig, G.; Sahling, G.</b> (1990). Long-term studies on <i>Noctiluca scintillans</i> in the German Bight: population dynamics and red tide phenomena 1968-1988. <i>Neth. J. Sea Res. 25(1-2)</i>: 101-112","BEntID":16317,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Neth. J. Sea Res. 25(1-2)</i>: 101-112","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Uhlig, G.; Sahling, G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Uhlig, G.; Sahling, G.","Englishabstract":"The seasonal development of <i>Noctiluca scintillans</i> has been studied by continuous monitoring at Helgoland-Roads over a period of 20 years. These long-term studies have revealed a temporal distribution pattern of seasonal periodicity with maximal abundances in June/July, and with a low but pronounced peak in December/January. Additionally, over a 21-year term a periodicity of high abundances in three years intervals is observed. In Helgoland waters the mean near surface abundances are higher than the near sea bed values. Apart from physico-chemical influences, buoyancy in <i>Noctiluca</i> is also controlled by its nutritional status. Since 1981, investigations have been extended to the German Bight. Potential centres of <i>Noctiluca</i> growth are found within certain areas near the east-frisian Wadden Sea, persisting from April/May until late July when the centres of high cell concentrations are separated from the coastline. Simultaneously, there is a strong tendency for vertical separation, generating the well-known red-tide phenomena with large mass aggregations at the sea surface, often misleadingly called <i>Noctiluca</i>-blooms, although the cell masses are irreversibly damaged and die off very rapidly. The spatial distribution of <i>Noctiluca</i> as determined every year in July, serves as a realistic base for biomass calculations. From 1981 to 1988 the total per season produced biomass (ashfree dry-weight) of <i>Noctiluca</i> ranges between 30000 (1981) and 69000 tons (1982).","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Long-term studies on <i>Noctiluca scintillans</i> in the German Bight: population dynamics and red tide phenomena 1968-1988","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":1990,"MonPub":null,"DateUpdate":"2019-08-20","DateCreate":"2001-08-22","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":16317,"PubliDate":1990,"Pagination":"101-112","XtraPublOfAnaID":null,"ISBN":null,"Volume":"25","Issue":"1-2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":44573,"SerRR":"Netherlands Journal of Sea Research. 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