蛋坨子岛鸟类多样性与黑尾鸥繁殖习性分析

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1、万方数据蛋坨子岛鸟类多样性及黑尾鸥繁殖习性研究BirddiversityandbreedinghabitsofBlack-tailedGullonDantuoziIslandAbstractDantuoziIslandiSthecoreareaofChengshantouCoastalLandformNationalNatureReserveinDalian．BasedonthesituationofclearingthebirdpopulationquantityandthedominantpopulationsofBlack-tailed

2、Gullsbreeding，thisstudywasfrom2013to2014，partitionofDantuoziIslandonthebirdpopulationandprotectedareassurroundingthebirdsfedto18surveysontheuseofsamplemethodandBlack-tailedGullsbreedingprocesscontinuetofollow-upinvestigation．Throughtheinvestigation，accumulatedalargenumberof

3、first-handinformation，mainlytocompletethestudycontent：ThebreedingresearchofBlack-tailedGullsonDantuoziIsland，thebirddiversitysurveyofDantuoziIslandaswellasmarinebirdsforagingsitesurveyofChengshantouregion．Throughinvestigationandresearch，themainconclusionsaredrawnasfollows：(

4、1)TheBlack-tailedGullsontheIslandmostlayeggsinlateMay，eachnestlay2to3eggs．Broodbirdsfedevery2—3times，themainfoodforsinailfishandotherbenthicworms．Nestlingsgenerallybornafter2-3dayoldchicksaftermoulting，aroundtheageof7dayscanwalk，aroundtheageof35，flyout,about40daysofagejuven

5、ilemoult。(2)Thereweretotalmarked60piecesofeggsin30nest，inwhich1piecesweremissing，2werefoundingsooner，4pieceswereabandoned，1chicksdiedaftertheshellisbroken，theremaining44pieceswerehatchingnormally．TheeggssizeofBlack-tailedGullsis(59．30cm-66．48cm)x(41．14cm一45．58cm)．weightis56

6、．109-66．139．(3)Thereare15kindsofbirdsontheDantuoziIsland，belongingto9families，10genera，12speciesofbirdsbelongingtocategory5flora．Inaddition，therearethreespeciesofbirdsarenoteasilyclassifiable．Themaintypeofnortheast,5，Palaearctictype，andtheentireNorthtypeandOrientaltypethetw

7、o，monsoontypeA，theother3kindsofbirdsthosewhoaienoteasilycategorizedcandividedintogeneralizedPalaearctictype．SummerbirdsisthemajorontheIsland，l4kindsinall15speciesofbirdsaresummerbirds，1speciesiSresidentbirds．Inallbirds，swimmingbirdsandwading-upbirdsareboth4kinds，songbirdsar

8、e3kinds，climbingbirdsare2kinds，raptorsandlandfowlareeach1．(4)0fallkindsofbirdSinth