《Habitat structure mediates biodiversityeffects on ecosystem properties生境結(jié)構(gòu)介導(dǎo)生物多樣性 生態(tài)系統(tǒng)特性的影響》由會(huì)員上傳分享，免費(fèi)在線(xiàn)閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。

1、Downloadedfromhttp://rspb.royalsocietypublishing.org/onAugust12,2018Proc.R.Soc.Bdoi:10.1098/rspb.2010.2414PublishedonlineHabitatstructuremediatesbiodiversityeffectsonecosystempropertiesJ.A.Godbold*,M.T.BullingandM.SolanOceanlab,InstituteofBiologicalandEnviron

2、mentalSciences,UniversityofAberdeen,Newburgh,AberdeenshireAB416AA,UKMuchofwhatweknowabouttheroleofbiodiversityinmediatingecosystemprocessesandfunctionstemsfrommanipulativeexperiments,whichhavelargelybeenperformedinisolated,homogeneousenvironmentsthatdonotinco

3、rporatehabitatstructureorallownaturalcommunitydynamicstodevelop.Here,weusearangeofhabitatcon?gurationsinamodelmarinebenthicsystemtoinvestigatetheeffectsofspeciescomposition,resourceheterogeneityandpatchconnectivityonecosystempropertiesatboththepatch(bioturbat

4、ionintensity)andmulti-patch(nutrientconcentration)scale.Weshowthatallowingfaunatomoveandpreferentiallyselectpatchesalterslocalspeciescompositionanddensitydistributions,whichhasnegativeeffectsonecosystemprocesses(bioturbationintensity)atthepatchscale,butoveral

5、lpositiveeffectsonecosystemfunctioning(nutrientconcentration)atthemulti-patchscale.Our?ndingsprovideimportantevidencethatcommunitydynamicsalterinresponsetolocalizedresourceheterogen-eityandthatthesesmall-scalevariationsinhabitatstructurein?uencespeciescontrib

6、utionstoecosystempropertiesatlargerscales.Weconcludethathabitatcomplexityformsanimportantbufferagainstdis-turbanceandthatcontemporaryestimatesofthelevelofbiodiversityrequiredformaintainingfuturemulti-functionalsystemsmayneedtoberevised.Keywords:habitatheterog

7、eneity;fragmentation;meta-community;ecosystemprocess;ecosystemfunction;patchdynamics1.INTRODUCTIONtheirenvironmenthasthepotentialtoalterthenatureofNaturalecosystemsareopensystemscomposedofinter-trophicinteractions[19]andthefundamentalformoftheconnectedgradien

8、ts,patchesandnetworks,inwhichrelationshipbetweenbiodiversityandecosystempropertiesmatter,energy,informationandorganismsarecontinu-[20,21],rekindlingdebateovertherelevanceandcapacityallyex