資源描述：
《長(zhǎng)江口濕地三個(gè)演替階段大型底棲動(dòng)物群落特征》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、動(dòng)物學(xué)研究2006,Aug.27(4):411-418CN53-1040/QISSN0254-5853ZoologicalResearchX長(zhǎng)江口濕地三個(gè)演替階段大型底棲動(dòng)物群落特征3楊澤華,童春富,陸健健(華東師范大學(xué)河口海岸學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室,上海200062)摘要:2001—2005年對(duì)長(zhǎng)江口新生沙洲九段沙(上沙、中沙、下沙)鹽沼演替序列不同階段[鹽漬藻類階段(SA)、海三棱草(Scirpusmariqueter)—草(Scirpustriqueter)階段(MT)、蘆葦(Phragmites
2、aus2tralis)—互花米草(Spartinaalterniflora)階段(AA)]的大型底棲動(dòng)物群落特征進(jìn)行了分析研究。大型底棲動(dòng)物群落的物種數(shù)、Shannon2Wiener多樣性指數(shù)、Pielou均勻度指數(shù)、密度及生物量都是MT>AA>SA。SA、AA優(yōu)勢(shì)種的生活型分別是底內(nèi)型、穴居型;MT優(yōu)勢(shì)種的生活型是底上附著型和穴居型。不同沙洲相同鹽沼演替階段大型底棲動(dòng)物群落結(jié)構(gòu)都較為相似,鹽漬藻類階段的相似性最高;不同演替階段間差別明顯,SA和AA間差別最大。不同鹽沼演替階段大型底棲動(dòng)物群落特征
3、的明顯差異,既反映了環(huán)境沿鹽沼演替序列的梯度變化,也體現(xiàn)了不同鹽沼對(duì)底棲動(dòng)物群落作用的差別,同時(shí)也顯示了大型底棲動(dòng)物對(duì)不同鹽沼演替階段生境的適應(yīng)。關(guān)鍵詞:鹽沼;演替階段;大型底棲動(dòng)物;群落結(jié)構(gòu)中圖分類號(hào):Q17914;Q958115文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):0254-5853(2006)04-0411-08CharacteristicsofMacrobenthicFaunaCommunitiesinThreeSuccessionalStagesoftheNewEmergentSaltMarshina
4、nEstuaryoftheYangtzeRiver3YANGZe2hua,TONGChun2fu,LUJian2jian(StateKeyLaboratoryofEstuarineandCoastalResearch,EastChinaNormalUniversity,Shanghai200062,China)Abstract:Thecharacteristicsofmacrobenthicfaunacommunitiesinthethreesaltmarshsuccessionalstages[
5、salinealgaestage(SA),Scirpusmariqueter-Scirpustriqueterstage(MT)andPhragmitesaustralis-Spartinaalternflorastage(AA)]werestudiedduring2001to2005,innewemergentshoals,Jiuduansha(Shangsha,ZhongshaandXiasha),anes2tuaryoftheYangtzeRiver.Theresultsshowedthat
6、theShannon2Wienerindex,thePielousEvennessindex,thedensityandthebiomassofthecommunitiesineachshoalallhadthesamesequenceforthesesuccessionalstages.ThissequencewasMT>AA>SA.ThedominantlifeformsatSAandAAstageswereinfaunalandcavingrespectively,whilethoseatM
7、Twereadheringandcaving.ThecommunitystructuresatthesamesuccessionalstageinthethreedifferentshoalswereallquitesimilarandthoseattheSAstageshadevenmoresimilarities.However,therewereobviousdifferencesamongthecommunitystructuresatthethreesuccessionalstages,
8、especiallybetweenthoseatSAandAA.Theseresultsimpliedthattherewassomeenvironmentalgradientvariationalongthesuccessionalsequence,andthatthesaltmarshofthedifferentsuccessionalstageshaddifferenteffectsonthemacrobenthicfaunacommunities.Accordingly,t
