生物多样性研究进展

COD19400tBOD5700tCOD8000tBOD3000teNSDlog1-=CladoceranMoianmacrocopaM.micruraDaphniapulexD.carinataD.psittaceaLeydigiaciliataSimocephalusvetulusAlonacostataA.rectangulaCopepodMesocycolopsleuckartiSinodiaptomussarsiThermocycolopskawamuraiT.taihokuensisAcanthocyclopsviridisRotiferFilinialongisetaAsptanchnnapriodontaSchizocercadiversicorisBrachionuscalyciflorusB.forficulaTrichotriatetractisCladoceranMoinamacroopaM.micruraM.rectirostrisBosminalongirostrisB.coregoniDiaphanosomaleuchtenbergianumD.brachyurumDaphniacarinataD.magnaD.pulexD.longispinaD.psittaceaD.hyalinaSidacrystallinaSimocephalusvetulusAlonacostataA.rectangulaA.verrucosaA.guttataCeriodaphniaquadrangulaChydorussphaericusC.ovalisCamptocercusrectirostisPleuroxusassimilisCopepodThermocyclopstaihokuensisT.hyalinusT.kawamaraiMesocyclopsleuckartiCyclopsvicinusC.strenuusSinodiaptomussarsiNeodiaptomusschmackeriEucyclopsserrulatusE.macruroidesdenticulatusSinocalanusdorriiSchmackeriaforbesiMacrocyclopsalbidusAcanthocyclopsviridisA.thomasiMicrocyclopslongiramusRotiferBrachionuscalyciflorusB.forficuliaB.angularisB.urceusKeratellavaglaK.cochlearisK.quadrataSchizocercadiversicornisTrichocercacylindricaMonostylalunarisFilinialongisetaF.maiorF.passaAsplanchnapriodontaA.brightwelliA.girodiNotommatidaeaculeataRotarianeptuniaDissotrochaaculeataLecanelunaL.ludwigiiL.sibinaL.ungulataLepadellapatellaLheterostyla.Polythratrigla71074331724664CladoceranDaphniacarinataD.longispinaD.cucullataD.pulexD.hyalinaCeriodaphniaquadrangulaDiaphanosomaleuchtenbergianumD.brachyurumSidacrystallinaBosminalongirostrisB.coregoniBosminalongirostrisM.micruraMoinamacroopaPleuroxuslaevisAlonellaexcisaChydorussphaericusC.ovalisCamptocercusrectirostisSimocephalusvetulusS.vetuloidesAlonacostataA.eximiaA.guttataA.rectangulaA.affinisA.verrucosaA.diaphanaGraptoleberistestudinariaLeydigiaciliataIlyocryptusagilisMacrothrixroseaScapholeberismucronataCopepodNeodiaptomusschmackeriSinodiaptomussarsiThermocyclopstaihokuensisT.hyalinusT.kawamaraiMacrocyclopsalbidusMesocyclopsleuckartiC.strenuusCyclopsvicinusEucyclopsserrulatusE.macruroidesdenticulatusSchmackeriaforbesiSinocalanusdorriiMicrocyclopslongiramusAcanthocyclopsviridisA.thomasiOnychocamptussp.RotiferBrachionuscalyciflorusB.forficuliaB.urceusAsplanchnapriodontaA.girodiKeratellavaglaK.cochlearisF.maiorFilinialongisetaDiurellastylataD.tigrisTrichocercacylindricaT.elongataSchizocercadiversicornisDissotrochaaculeataPolythratriglaLecanelunaL.ungulataL.ludwigiiMonostylalunarisM.unguitataTrichotriatetractisPedaliamiraNotommatidaeaculeataEdmondson,W.T.andG.G.Winberg.1971.AManualonMethodsforAssessmentofSecondaryProductivityinFreshWaters.IBPHandbookNo.17.Blackwell,OxfordMargalef,D.R.1958.Informationtheoryinecology.GeneralSystems.3:3671EUTROPHICATIONOFBAIYANGDIANLAKE,SHOWNBYZOOPLANKTONCOMMUNITYSTRUCTUREOVERTIMEXuMuqi,ZhuJiang(InstituteofZoology.AcademiaSinica.BeiJing100080)BaiyangdianLakeisthelargestfreshwaterlakeintheNorthernChinaandisamostvaluableresource,supportingaveryproductivefisheryandanimportantwatersupplyreservoiraswellashavinggreatconservationvalueinitswildlifeandwetlandvegetation.Atpresent,waterpollutionisbecomingincreasinglyseriousproblemduetoreceivingalargeamountofwastewaterfromBaodingCityandothersources.Asthecorrespondingresults,thespeciesdiversityandtheaquaticresourcesareconstantlydeclining,thesustainableeconomicdevelopmentofthelocality,people'slivesandproductionprocesseshavebeenseriouslythreatenedbecauseofwaterpollutionandothervariationsofenvironmentalconditions.AsystematicalinvestigationintothespatialandtemporaldistributionofzooplanktonspeciesandthevariationofcommunitystructureinBaiyangdianLakeareawascarriedoutinMay'JulyandOctober,1993,respectively.WaterqualityinthreebodiesofwaterinBaiyangdianLakeareawasassessedbystudyingthequalitativeandquantitativeanalysesofzooplanktoncommunityatfourteensamplingstations.Chemicalandbiologicaldatain1993werecomparedwith1950's,1970'sand1980'stoshowthetrendofeutrophicationofBaiyangdianLake.themainresults,conclusionsandsomesuggestionsaresummarizedasfollows:1.TangheSewageResservoirconstructedin1977isusedasastoreofwastewaterfromBaodingareatolightenthestressofpollutionforBaiyangdianLake.Itshowedcomparativelystrongpurificationefficiencyininitialstageofoperationaccordingtotheanalysesofwaterqualityandbiologicalmonitoring.AtpresentthefunctionofpurificationinTangheSewageReservoirismarkedlyweakenedbyshowingofthefewnumberofzooplanktonspeciesandlowdiversityindexvalueaswellashighindividualabundanceandbiomass(tolerantpopulation)duetolong-term-overloadingforwastewaterdischarge.ItisquitelynecessarytoreconstructTangheSewageReservoirasamulticellstabilizationpondwhichcanbecontrolledbyartificalwayinordertoimprovewaterqualityinBaiyangdianLake.2.PartsewagecomingfromBaodingCityisdirectlydischargedintoBaiyangdianLakebyFuheCanal.SixsamplingstationsfromupatreamclosetopollutionsourcetodownstreamintotheBaiyangdianLakeweredistinguishableintermsofshowingdifferencesinthespeciesrichness,individualabundance,biomassanddiversityinedxvalueinFuheCanal.