Effect of mangrove restoration on crab burrow density in Luoyangjiang Estuary, China

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    摘要 Background:Mangroverestorationseekstorestoreorrebuilddegradedmangrovesystems.Themethodsofmangroverestorationincludeecologicalprojectsandrestoration-orientedtechnologies,thelatterofwhicharedesignedtorestorethestructure,processesaswellasrelatedphysical,chemicalandbiologicalcharacteristicsofwetlandsandtoensuretheprovisionofecosystemservices.Asimportantcomponentsofmangroveecosystem,benthicorganismsandcrabsplayakeyroleinnutrientcycling.Inaddition,mangroverestoration,suchasvegetationrestorationmeasures,canleadtochangesinthebenthicfaunalcommunities.Thisstudyinvestigateswhetherthepresenceofdifferentmangrovespecies,ageandcanopycoverofmangrovecommunitiesaffectthedensityofcrabburrows.Methods:TheLuoyangjiangEstuary,inthesoutheastofFujianProvince,wasselectedasourresearcharea.Asurvey,covering14sites,wasconductedtoinvestigatetheimpactsofmangroverestorationonthedensityofcrabburrowsinfourrehabilitatedforestswithdifferentstandagesandcanopy.Results:Itwasfoundthatdifferencesinvegetationtypeshadalargeimpactoncrabdensityandthatthedensityofcrabburrowswasloweronexposedbeaches(non-mangrove)thanundermatureKandeliacandel,AegicerascorniculatumandAvicenniamarinacommunities.Ingeneral,theamountofleaflitteranddebrisonmangrovemudflatswasgreaterthanonthebeachesasfoodsourcesforcrabs.Two-factoranalysisofvariance(ANOVA)showsthatchangesinmangrovespeciesandagesincerestorationhaddifferenteffectsoncrabburrowdensity.Theeffectofcanopycoverwashighlysignificantoncrabburrowdensity.Conclusions:Theresultssuggestthatintheprocessofmangroverestorationthecombinedeffectsofmangrovestandage,canopycoverandotherfactorsshouldbetakenintoaccount.Thisstudyfurthersupportsthefindingsofthefuturescientificresearchandpracticeonmangroverestorationandmanagementmeasures.
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    出版日期 2015年04月14日(中国Betway体育网页登陆平台首次上网日期,不代表论文的发表时间)
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