Climate Change Data Portal
Combining individual-based models and advection models to assess climate change impact on Antarctic krill | |
项目编号 | http://gepris.dfg.de/gepris/projekt/411096565 |
Professorin Dr. UtaBerger | |
项目主持机构 | Technische Universität Dresden |
开始日期 | 2018 |
英文摘要 | TheSouthernOceanisparticularlysusceptibletoclimatewarmingandcomprisessomeofthemostrapidlywarmingregionsworldwide.Thishasresultedinanincreaseinseasurfacetemperaturesof0.9ºCinsummeraroundtheislandofSouthGeorgiasince1925and1ºCatthewesternAntarcticPeninsulafrom1951to1998.Furthermore,globalwarmingaffectstheextensionofseaiceandthetimingofseaiceformation.TheseenvironmentalchangestogetherwithoceanacidificationwillimpactthepopulationdynamicsofAntarctickrill(Euphausiasuperba)inanunknownway.SincekrillisbothanecologicallykeyspecieswithitscentralroleintheAntarcticfoodwebandofhigheconomicvalue,morereliablecircumpolarprojectionsofthetrendsofAntarctickrillpopulationsinresponsetoclimatechangeareurgentlyneededforbettermanagementandconservationmeasures.Inprinciplepopulationmodelscanprovidesuchinsights,butdifferingthreatsto,andbehaviourof,larvalkrillcomparedwithadultkrillmeansthatmechanisticmodelsareneededinsteadofcorrelativeempiricalmodels.Itwillbecrucialtoconsiderthebehaviourandindividualvariabilityofkrillinthemodeltoassesstheadaptationpotentialofkrilltoglobalchange.Therefore,individual-based,process-basedmodelswillbedesignedandimplementedincludingphysiologicalsubmodelsfordifferentlifestagesofkrill.Modellingthewholelifecycleofkrillisparticularlyimportantsincekrillreversesitsdailyverticalmigrationbehaviourasitgetsolderandwhileadultkrillisabletoreduceitsmetabolicactivityinwinterlarvalkrillhastoremainactivethroughouttheyear.Apartfromphysiologicalandbehaviouralaspectsitiscrucialtounderstandtowhichenvironmentalconditionskrillisexposedto.Especiallyseaicecoverissupposedtoplayacrucialrolesinceitprovideskrilllarvaeshelterfrompredatorsandcurrents,butisalsoalowfoodenvironmentwhereresourcesarescarceandpatchilydistributed.Tomeaningfullyinvestigatetheimpactofchangingspatialandtemporalseaicedynamicsandfoodavailabilityonthekrillpopulationdynamicstheindividualbasedmodelneedstobecoupledwithadvectionmodels.Thisisespeciallyimportantaskrilllarvaedonotactivelyswimandtheirinteractionwithseaicecanhaveasignificantimpactontheirtransportintermsofdestinationandtimingofarrival.Thecouplingofadvectionmodelsandindividual-basedmodelsishighlyinnovativerequiringappropriatehandlingofthedifferentspatialandtemporalresolutionsrelevantforthetwomodellingcomponents,namelythekrillanditstransportbywatercurrentsandseaicedrift.Theproposedprojectwillthushelptointegrateexistingknowledge,allowingforanimprovedprojectionofthelikelyimpactofenvironmentalchangeonAntarctickrillatcircumpolarscales. |
学科分类 | 0603 - 生态学;06 - 生物科学 |
资助机构 | DE-DFG |
项目类型 | Research Grants |
国家 | DE |
语种 | 英语 |
文献类型 | 项目 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/69375 |
推荐引用方式 GB/T 7714 | Professorin Dr. UtaBerger.Combining individual-based models and advection models to assess climate change impact on Antarctic krill.2018. |
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