1、寧夏大學碩士學位論文沙湖浮游動物群落結(jié)構(gòu)及其與水質(zhì)因子關(guān)系的研究姓名：孫曉雪申請學位級別：碩士專業(yè)：動物學指導教師：邱小琮201104寧夏大學碩士學位論文AbstractIIAbstractThefivesamplesitesofShahuLakeweresurveyedinApril2008(spring)July(summer)October(autumn)January2009(winter).Themainwaterqualit

2、yfactsinspatialdistributionseasonalvariationwereanalyzedthezooplanktonspeciescompositiondensitybiomassseasonalvariationthedominantspeciescompositionwerestudied.ThewatereutrophicationstatusofShahuLakewasevaluatedcomprehen

3、sivelybyusingintegratedtrophicstatusindicesgradedapproachindicatsofzooplanktonecology.ThediversityindexswereusedtoanalyzethediversityofzooplanktoninShahuLake.Clusteranalysis(Clusteranalysis)multidimensionalanalysis(Multi

4、dimensionalscalingMDS)wereusedtoanalysisthedistributionpatternofzooplanktoncommunitystructureinShahuLake.MultivariateanalysismethodswhichincludedCrelationanalysisMultipleregressionanalysisPathanalysisCanonicalCrespondenc

5、eAnalysiswereusedtostudytherelationshipbetweenzooplanktondensitybiomassspeciesnumberthewaterqualityfactsinShahuLake.TheresultscouldprovidethebackgroundinfmationfthestudyoftheecosystemstructureinShahuLakeprovidebiological

6、referencesbasicdataftheShahuLakeeutrophicationcontrolrationalaquacultureenvironmentalassessmentprotection.Theresultsofthisstudyareasfollows.1.35speciesofzooplanktonwereidentifiedinShahuincluding23speciesofRotifera8specie

7、sofCladocera4speciesofcopepods.Theyear’saveragedensitywas427ind.Ltheyear’saveragebiomasswas0.901mgL.Spatialtempalchangesinthespeciescompositionofzooplanktonwereobvious.Rotiferswasdominantinthespeciescompositionwasmainlys

8、peciesineachsamplingpointsthefourseasons.Therewere8Commonspecies9dominantspeciesofzooplanktoninShahuLakeallofwhichwererotifers.Halfofthedominantspeciesweretypicalindicatspeciesofeutrophiclakes.TheannualaverageofShannonWi

9、eaverspeciesdiversityindexMargalefspeciesrichnessindexevennessindexhadlittledifferencesineachsamplingpointbuthadobviousdifferencesinseasonalvariation.ShannonWieaverspeciesdiversityindexwasthehighestinwinter(2.855)thelowe

10、stinspring(1.696).Margalefspeciesrichnessindexinspringwasthehighestinspring(2.016)thelowestinautumn(1.686).Theseasonalvariationofevennessindexrangedastheder:wintersummerfallspring.Theevennessindexinspringwasabout2timesme

11、thaninwinter.LaoyuchangsamplesiteShiyiduisamplesitewerehighlysimilarinthecommunitystructureofzooplanktonJinshuikousamplesiteHuzhongxinsamplesitewerehighlysimilarinthecommunitystructureofzooplankton.Niaodaosamplesitewasqu