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Changes in the breeding status of the southern black-backed gull (Larus dominicanus) colonies on Rangitoto Island, Hauraki Gulf, New Zealand | Notornis and Birds New Zealand

机译:新西兰豪拉基湾朗伊托托岛上南部黑背鸥(Larus dominicanus)殖民地繁殖状况的变化|诺托尼斯和鸟类新西兰

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摘要

Thesouthernblack-backedgull(Larusdominicanus)isacommonspeciesthroughoutNewZealand,andhasasignificantpresenceinAucklandCity.LargecoloniesarepresentonRangitotoIslandonly8kmfromthecitya€?scentre.Theproximityofthesecoloniestotheanthropogenicresourcesofthecitymayhaveinfluencedbreedinglocationsandlocalpopulations.Usingfielddatafromthe2012/13breedingperiod,wecomparethecurrentstatusofthebreedingpopulationonRangitotoIslandwithhistoricaldatacollatedfromliterature.TheRangitotopopulationexhibitedrapidgrowththroughouttheearly20thcentury,apatternattributedtoenvironmentalchangesassociatedwithEuropeansettlementanddevelopment.Sincethe1980s,thecolonysizeshavedeclined,achangethatisconsistentwithothergullpopulationsbothnationallyandglobally.Thedriverofthepopulationchangesislikelytobetheavailabilityoffoodandtheexpansionofvegetationintothecolonies.Humandisturbanceandpredationarediscountedasimpactingonpopulationchange.
机译:Thesouthernblack-backedgull(Larusdominicanus)isacommonspeciesthroughoutNewZealand,一个ndha不GNI达到ntpre高NCE都是ckla NDCI ty.La RGE是一个完整的电子不预SE,然后NRA绑到SLA过程nly8kmfro mthecitya€?Scentre.Theproximityofthesecoloniestotheanthropogenicresourcesofthecitymayhaveinfluencedbreedinglocationsandlocalpopulations.Usingfielddatafromthe2012 / 13breedingperiod,wecomparethecurrentstatusofthebreedingpopulationonRangitotoIslandwithhistoricaldatacollat​​edfromliterature.TheRangitotopopulationexhibitedrapidgrowththroughouttheearly20thcentury,apatternattributedtoenvironmentalchangesassociatedwithEuropeansettlementanddevelopment.Sincethe1980s,thecolonysizeshavedeclined,将帮助我们实际上sco下STE ntwi感谢RGU llpo保存我们的nsbo thna我们llya ndglo的lly.The DRI求Øfthe出我们是完全没有SLI的Mac LYTO诞生超组在破碎的FFO是ndtheËXPA实际上是一个小FVE后我们GED,并按照中的中的s.Hu是基督徒RBA考A ndpre我们不得不等待SCO的渠道是不是一个CTI不仅不保存我们的onchange。

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