{"refrec":{"BRefID":12942,"RR":"<b>Kuiters, L.</b> (1980). De invloed van predatie op de zomerafname van het herbivoor zooplankton in de Zuidelijke Bocht van de Noordzee. <i>Interne verslagen Nederlands Instituut voor Onderzoek der Zee</i>, 1980(11). NIOZ: Texel. 55 pp.","BEntID":12942,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Interne verslagen Nederlands Instituut voor Onderzoek der Zee</i>, 1980(11). NIOZ: Texel.  55 pp.","DocTypID":13,"DocType":"Reports","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Kuiters, L.","OrigTitleTranslFlag":1,"Authorstringtrunc":"Kuiters, L.","Englishabstract":"Numerous predator species were found in the Southern Bight of the North Sea during the period June 18-July 26 (1979). Four subareas distinguished differed in predator density, assumingly due to the abundance of the Scyphomedusa <i>Cyanea lamarckii</i> in both coastal areas. It is not clear how the large jellyfish met their nutritional needs. During the last week they disappeared almost entirely. In the Southern Coastal subarea the density of fish larvae, increased with the decline of <i>Cyanea</i>, but this might be caused by immigration from the south. In both offshore subareas, the predators fed probably mainly on animals other than copepods. In these subareas, <i>Pleurobrachia pileus</i> was one of the predominant species, but decreased significantly during the period of observation. Along the shore the copepods were much more numerous than offshore. A low development rate was distinct in all subareas, possibily due to low food levels. A summer decline was very distinct in the Northern Coastal subarea, starting about July 10. Apparently, the summer decline in the Southern Coastal subarea started one week later. In both offshore subareas, a summer decline of copepods was not observed. The summer decline of copepod populations occurring near the coast was preceded by a shortness of food. The actual decline was probably caused by fish larvae predation and perhaps also by <i>Beroë</i> and<i> Cyanea</i>.","AbstractOtherLang":"In de Zuidelijke Bocht werden gedurende de periode 18 juni tot 26 juli (1979) een groot aantal soorten predatoren aangetroffen. De vier gebieden die onderscheiden werden verschillen onderling in predator-dichtheid. Dit kon voor een groot deel worden toegeschreven aan het in grote getale voorkomen van <i>Cyanea</i> (blauwe haarkwal) in de beide kustgebieden. Het was niet duidelijk hoe deze grote kwallen in hun grote voedselbehoefte voorzagen. Gedurende de laatste week verdwenen ze vrijwel geheel. In het zuidelijk kustgebied nam met het verdwijnen van <i>Cyanea</i> het aantal vislarven sterk toe, maar dit moet waarschijnlijk voor een groot deel worden toegeschreven aan immigratie. In de beide offshore-gebieden voedden de predatoren zich waarschijnlijk voor een groot deel met andere dieren dan copepoden. <i>Pleurobrachia</i> was in deze gebieden een van de belangrijkste soorten, maar nam gedurende de periode sterk af. Langs de kust kwamen de copepoden in veel grotere dichtheden voor dan in het buitengebied. Opmerkelijk was de geringe groei van de copepoden in alle gebieden, vermoedelijk als gevolg van voedselbeperking. In het noordelijk kustgebied trad heel duidelijk een zomerafname op, welke omstreeks 10 juli begon. Vermoedelijk begon in het zuidelijk kustgebied de zomerafname een week later. In de beide offshore-gebieden werd geen afname van de copepoden waargenomen. De zomerafname, zoals die aan de kust optrad, werd voorafgegaan door voedselbeperking. De daadwerkelijke afname werd waarschijnlijk bewerkstelligt door predatie van vislarven en vermoedelijk eveneens van <i>Beroë</i> en van <i>Cyanea</i>.","BibLvlCode":"MS","StandardTitle":"De invloed van predatie op de zomerafname van het herbivoor zooplankton in de Zuidelijke Bocht van de Noordzee","OrigTitleLangCode":"nl","OrigTitleLangCodeExtended":"dut","OrigTitleLangID":41,"DateLastModified":{"date":"2025-07-22 01:33:06.175990","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":null,"MonPub":1980,"DateUpdate":"2025-07-15","DateCreate":"2001-07-05","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":null,"monrec":{"MonID":12942,"ISBN":null,"PubliDate":1980,"IssueDate":null,"Volume":"1980","Issue":"11","Pagination":"55","Place":"Texel","Edition":null,"BRefXtra":null,"BRefXtraRR":null,"SerID":5036,"SerRR":"Interne verslagen Nederlands Instituut voor Onderzoek der Zee. 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