热门搜索:部委学者  |  经济学家  |  培训课程  |  周延礼  |  蒋昌建  |  
咨询电话
 
DrCayelanCarey
DrCayelanCarey
Experimentalcyanobacterialbloomscanincreasethebiomass,richness,diversity,andstabilityoftheeukaryoticphytoplanktoncommunity Cyanobacterialbloomsareincreasinggloballyinmanyfreshwaterlakes,botheutrophica...
邀请讲课
官方电话: 
http://www.gsyjy.cn/index.php/mstj.htmlnyhg/39614.html

联系方式

  • 联系方式:
  • 手机号码:
  • 联系邮箱:
  • 助理电话:

详细介绍

Experimentalcyanobacterialbloomscanincreasethebiomass,richness,diversity,andstabilityoftheeukaryoticphytoplanktoncommunity Cyanobacterialbloomsareincreasinggloballyinmanyfreshwaterlakes,botheutrophicandoligotrophic.Freshwatercyanobacteriagenerallyhavenegativeeffectsoneukaryoticphytoplanktonineutrophiclakesbecauseoftheirabilitytoformdensesurfacescumsthatreducelightavailability.However,lessisknownabouttheeffectsofcyanobacteriaonotherphytoplanktoninoligotrophiclakes.WeconductedseveralexperimentsmanipulatingthedensityofGloeotrichiaechinulata,alargecolonialcyanobacteriumthatisincreasinglyobservedinlow-nutrientlakesinthenortheasternUnitedStatesandCanada.Inlow-nutrientmesocosms,Gloeotrichiaincreasedthebiomass,richness,anddiversityofotherphytoplankton,likelybecauseitincreasednitrogenandphosphorusconcentrationsinthemesocosms.Interestingly,wealsoobservedthatGloeotrichiastabilizedthecompositionoftheeukaryoticphytoplanktoncommunity:theno-Gloeotrichiacontroltreatmentexhibitedgreatermultivariatedispersionovertimethananyofthe+Gloeotrichiatreatments.AsthedensityofGloeotrichiaincreased,itscontributiontothevarianceofthephytoplanktoncommunityalsoincreased.NetworkanalysisshowedthattheincreasinginfluenceofGloeotrichiacoincidedwithincreasingcomplexityofthephytoplanktoncommunity.However,inhigh-nutrientmesocosms,Gloeotrichiainhibitedotherphytoplankton,suggestingthatGloeotrichia’sfacilitationeffectsmaybecontext-dependent.Ascyanobacterialbloomscontinuetoincreaseinmanylakes,itiscriticallyimportantthatwedeterminehowtheeukaryoticphytoplanktoncommunitieswillrespond.

上一篇:王小明

下一篇:李俊伟

快速发布需求
重新获取验证码

推荐讲师

联系我们


微信扫一扫