学科分类
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6 个结果
  • 简介:How the pollution stress acting on the phytoplankton populations ──an observation by the experimental enclosed ecosystemTangS...

  • 标签: PLANKTON enclosed experiment POLLUTION PREDATION
  • 简介:与一个简单索引定义东方亚洲冬季季风(EAWM)的紧张是一项困难的任务。这份报纸在18存在EAWM力量索引的意思上详细描述并且分类他们进四个范畴:低级的风索引,上面的带的风砍索引,东方西方压力对比索引,和东方亚洲人马槽索引。索引当时是的这些的时间/空间的表演和预言潜力为1957鈥?分析了001时期。它表明在十的timescale上,除了东方西方压力的大多数索引对比索引能很好捕获在1986附近的EAWM的连续变弱。在interannualtimescale上,低级的风索引和东方亚洲马槽索引基于ElNi的知识有最好的可预测性?o南部的摆动和北极摆动分别地。所有18个存在索引能很好描述EAWM相关的发行量,降水,和更低的tropospheric空气温度异例。然而,在华中的大区域上的表面空气温度的变化不能与地志的效果有关可能是大多数索引捕获的井,它是。这研究的结果可以为EAWM的未来研究提供一本可能的参考书。关键词东方亚洲冬季季风索引-interannual变化-interdecadal变化

  • 标签: 东亚冬季风 季风强度 年际时间尺度 东亚大槽 压力对比 可预测性
  • 简介:Effectsofnitrogen(N)andphosphorus(P)fromdifferentsourcesandatdifferentconcentrationsonthegrowthofLevanderinafissa(=Gyrodiniuminstriatum)werestudiedinlaboratoryconditions.ThefindingsmightexplaintherecurrentbloomsofthisspeciesinPearlRiverEstuary,China.ResultsshowedthatnutrientlimitationsignificantlyinhibitedthegrowthofL.fissa.Thevaluesofspecificgrowthrate(μmax)andhalf-saturationnutrientconcentration(KS)were0.37divisions/dand8.49μmolL?1forN,and0.39divisions/dand1.99μmolL?1forP,respectively.BasedonKSvalues,dissolvedinorganicNlevelinPREwassufficienttosupportthehighproliferationofL.fissa,whiledissolvedinorganicPconcentrationwasfarlowerthantheminimumrequirementforitseffectivegrowth.L.fissawasnotabletoutilizedissolvedorganicN(DON)compoundssuchasurea,aminoacids,anduricacid.However,itgrewwellbyusingawidevarietyofdissolvedorganicP(DOP)sourceslikenucleotides,glycerophosphate,and4-nitrophenylphosphate.TheresultsfromthisstudysuggestedthattheabilityinDOPutilizationofL.fissaoffersthisspeciesacompetitiveadvantageinphytoplanktoncommunities.ThehighlevelandcontinuoussupplyofDIN,enrichmentofDOP,togetherwithwarmclimateandlowsalinityinthePearlRiverEstuaryprovidedasuitablenutrientnicheforthegrowthofL.fissa,andresultedintherecurrentbloomsintheestuary.

  • 标签: Levanderina fissa GROWTH NITROGEN PHOSPHORUS PEARL