{"refrec":{"BRefID":6250,"RR":"<b>Trull, P.; Hecker, S.; Watson, M.J.; Nisbet, I.C.T.</b> (1999). Staging of roseate terns <i>Sterna dougallii</i> in the post-breeding period around Cape Cod, Massachusetts, USA = Rustplaatsen van Dougalls sterns na de broedtijd rond Cape Cod, Massachusetts, USA. <i>Atlant. Seabirds 1(4)</i>: 145-158","BEntID":6250,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Atlant. Seabirds 1(4)</i>: 145-158","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Trull, P.; Hecker, S.; Watson, M.J.; Nisbet, I.C.T.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Trull, P. <i>et al.</i>","Englishabstract":"We conducted several studies of Roseate Terns <i>Sterna dougalli</i>i around Cape Cod, Massachusetts, USA, during the post-breeding period (July-September) in 1990-1998. We also reviewed reports and estimates of numbers in regional publications. We identified 20 discrete sites where Roseate Terns and Common Terns S. hirundo staged (rested in flocks during daylight hours) between 24 July and 22 September. All sites were on open beaches or sand flats, usually near the end of barrier islands or barrier beaches. Only one site was found where Roseate Terns were present in thousands, but three other such sites have been documented during the last 20 years. All of these major staging sites are on outer beaches of Cape Cod adjacent to cold Atlantic Ocean waters. Roseate Terns appear to disperse throughout the breeding area in July and August, re-aggregating on outer Cape Cod in late August and September prior to southward migration in mid-September. Roseate Terns ringed at eight colony-sites throughout the breeding area in northeastern North America were identified at staging sites around Cape Cod. We found only two sites on Cape Cod where Roseate Terns roosted at night in 1998; one of these has been a major roost site for many years. The concentration of a large fraction of this endangered regional population into a small area during September makes it vulnerable to human disturbance (especially at night) and to North Atlantic hurricanes.","AbstractOtherLang":"In dit artikel worden de rustplaatsen en foerageergebieden van de Dougalls Stern na de broedtijd aan de Noord-Amerikaanse oostkust (Cape Cod, Massachusetts, USA) beschreven. Het onderzoek was opgezet in een poging om zowel de ligging van deze gebieden, als het gebruik en de eventuele bedreigingen voor de sterns in kaart te brengen. Gedurende de afgelopen 20 jaren is het bestand langzaam gegroeid, tot 3700 paren op eilandjes ten zuidwesten en ten westen van Cape Cod en 300 paren op eilandjes in Gulf of Maine. De gegevens werden verzameld door vogeltijdschriften door te nemen en door speciaal georganiseerde tellingen vanuit de lucht en op het land. In totaal werden bij combinatie van literatuurstudie en tellingen vanuit de lucht 20 rust- en roestgebieden gevonden rond Cape Cod en 15 van deze plekken werden vervolgens bezocht in 1994 en 1998. Tijdens de tellingen vanuit de lucht werden locaties gevonden met 200-1500 sterns elk (Dougalls Sterns konden hierbij doorgaans niet van de aanwezige Visdieven worden onderscheiden). Er wordt een overzicht gegeven van de grootste aantallen sterns die op elk van de 20 gevonden locaties zijn waargenomen gedurende 1980-98. De voornaamste gebieden grensden aan het koude Atlantische water ten oosten van Cape Cod. De sterns bleken zich onmiddellijk te verspreiden in de periode direct volgend op de broedtijd (juli-augustus), waarna eind augustus/begin september steeds grotere concentraties werden gevormd, als voorverzamelplaatsen ter voorbereiding van de najaarstrek. Slechts twee (van de belangrijkste) plaatsen werden ook 's nachts door de sterns gebruikt en de geweldige concentratie van deze zeldzame vogel op een zo klein aantal roestplaatsen maakt de soort in bijzonder kwetsbaar voor bijvoorbeeld verstoring of voor de jaarlijkse orkanen in dit kustgebied.","BibLvlCode":"AS","StandardTitle":"Staging of roseate terns <i>Sterna dougallii</i> in the post-breeding period around Cape Cod, Massachusetts, USA = Rustplaatsen van Dougalls sterns na de broedtijd rond Cape Cod, Massachusetts, USA","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":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":6250,"PubliDate":1999,"Pagination":"145-158","XtraPublOfAnaID":null,"ISBN":null,"Volume":"1","Issue":"4","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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