資源描述：
《大亞灣海域微表層和次表層浮游植物群落結(jié)構(gòu)的比較研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、暨南大學(xué)碩士研究生學(xué)位論文AbstractTheseasurfacemicrolayer(SML)isanimportantinterfacebetweentheatmosphereandthesea.Thisinterfacehasuniquephysicochemicalandbiologicalproperties.AnannualsurveywasconductedonthephytoplanktoncommunityandenvironmentalfactorsinDapengaoareaofD
2、ayaBaybetweenApril2013andMarch2014.Thepurposeofthisstudyistobetterunderstandphytoplanktoncomposition,quantitativedistributionandannualvariationofdominantspecies,andtoknowthecharacteristicsofphytoplanktoncommunitystructureintheSMLandsubsurfacewater(SSW).Me
3、anwhile,phytoplanktonDNAfingerprintswereanalyzedbyPCR-denaturinggradientgelelectrophoresis(PCR-DGGE)technique.TheresultsfromthisstudyenrichedtheinformationofphytoplanktonstructureintheSMLofDayaBay,andprovidedascientificbasisforenvironmentalprotectioninthi
4、sseaarea.Atotalof142taxawereidentifiedduringthesurvey,including132speciesfromtheSMLand128fromtheSSW.However,theShannon-Weaverspeciesdiversityindexandevennesswaslow,indicatingthedeteriorationofenvironmentsinDayaBayintherecentyears.Diatomwasthepredominantgr
5、oupofphytoplankton,followedbydinoflagellate,andfewoccurrenceofspeciesinothergroupssuchascyanobateria,chrysophytes，cryptophytesandrhaphidophytes.ThecommonpredominantspeciesincludedChaetoceros,Skeletonemacostatum,Pseudo-nitzschiaandLeptocylindrusdanicus,whi
6、chwerepresentedthroughoutthewholeyear.Meanwhile,Rhizosoleniafragilissima,Cerataulinapelagica,Guinardiastriatadominatedinsomeparticularmonths.Thephytoplanktonabundancewashighaswell,withtheannualaveragecellsdensityof662.07×10cells/Land1.48×10cells/LintheSML
7、andSSW,respectively.Thecelldensitypeakedinsummer,followedbywinter,andwaslowerinspringandautumn.AhighpeakofS.costatumoccurredinFebruary,whichresultedinwinterpeakofphytoplankton.ThephytoplanktonstructureintheSMLwassimilartothatintheSSW,andwascharacterizedby
8、thedominanceofdiatoms,highspeciesrichnessandlowspeciesdiversity.Thetotalphytoplankton,diatomsanddinoflagellateswereenrichedintheSML,particularlyfortheIII暨南大學(xué)碩士研究生學(xué)位論文dominantdiatoms.Theabundancesofeukaryoticphytopla
