{"refrec":{"BRefID":6245,"RR":"<b>Camphuysen, C.J.</b> (1999). New feeding technique of great cormorants <i>Phalacrocorax carbo sinensis</i> at beam trawlers = Nieuwe foerageermethode van Aalscholvers geassocieerd met de boomkorvisserij. <i>Atlant. Seabirds 1(2)</i>: 85-90","BEntID":6245,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Atlant. Seabirds 1(2)</i>: 85-90","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Camphuysen, C.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Camphuysen, C.J.","Englishabstract":"Since the mid 1980s, following a marked range expansion and dramatic population growth, continental Great Cormorants <i>Phalacrocorax carbo sinensis</i>, increasingly use Dutch coastal waters as a feeding area. Fishing Great Cormorants are now commonly seen at sea within 15 km of the nearest coast and small numbers disperse further out to sea. Small beam trawlers, mainly targeting Brown Shrimp <i>Crangon crangon</i>, are the dominant fishery of these waters and Great Cormorants were soon seen to attend these vessels. Recent observations indicate that, in contrast to other ship-following seabirds, Great Cormorants forage continuously during the towing of nets, even when no discards are produced on board. It is suggested that these birds prey on disturbed fish or other prey, just behind the moving nets that rupture the bottom. This feeding technique has not previously been observed in any species of seabird in the North Sea.","AbstractOtherLang":"De continentale vorm van de Aalscholver <i>Phalacrocorax carbo sinensis</i> was in Nederland tot voor kort vooral een viseter in de binnenwateren. Nadat de populatie sinds 1978 snel in omvang is toegenomen vestigde de soort zich ook in de kustwateren. De afgelopen jaren zijn de aantallen langs de kust zo sterk toegenomen dat geen verspreidingsatlas nog een adequate beschrijving van hun voorkomen geeft. Zeetrektellers constateerden al snel dat Aalscholvers belangstelling vertoonden voor garnalenvissers en kleine boomkorvissers langs de kust. Tijdens een zeiltocht voor de Noord-Hollandse kust ontstond de mogelijkheid om zo'n groep Aalscholvers wat beter te bekijken. De dieren bleken in het kielzog te foerageren terwijl de trawler zijn netten over de bodem trok, maar geen visafval overboord zette. De overige scheepsvolgers deden daarom weinig anders dan 'meevliegen'. Geattendeerd op dit geval hebben andere waarnemers hetzelfde een week later gezien bij een garnalenvisser voor de Hollandse kust. De waarnemingen suggereren dat de aalscholvers profiteren van opgejaagde of misschien juist ontsnapte of licht beschadigde vis, vlak achter de netten, in het verruïneerde pad dat zo'n trawler op de bodem achterlaat. Dit is tevens een oproep aan waarnemers om het gedrag van Aalscholvers achter dergelijke vissersvaartuigen te beschrijven en te rapporteren. De Aalscholver lijkt zich in korte tijd met succes te hebben aangepast aan een nieuwe omgeving, nieuwe prooien en zich zelfs nieuwe foerageertechnieken eigen te hebben gemaakt.","BibLvlCode":"AS","StandardTitle":"New feeding technique of great cormorants <i>Phalacrocorax carbo sinensis</i> at beam trawlers = Nieuwe foerageermethode van Aalscholvers geassocieerd met de boomkorvisserij","OrigTitleLangCode":"nl","OrigTitleLangCodeExtended":"dut","OrigTitleLangID":41,"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":1999,"MonPub":null,"DateUpdate":"2017-09-05","DateCreate":"2001-02-21","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":6245,"PubliDate":1999,"Pagination":"85-90","XtraPublOfAnaID":null,"ISBN":null,"Volume":"1","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45223,"SerRR":"Atlantic Seabirds. Seabird Group and Dutch Seabird Group: Sandy, Bedfordshire.  ISSN 1388-2511","StandardTitleSer":"Atlantic Seabirds","ISSN":"1388-2511","AbbrevSer":"Atlant. 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