水产学报2025，Vol.49Issue(8)：95-108,14.DOI:10.11964/jfc.20230413971
我国北缘红树林大型底栖动物群落beta多样性格局及其驱动因素
Beta diversity patterns and its driving factors of the northern margin mangrove macrobenthos community in China
摘要
Abstract
Beta diversity can explain the changes inman species composition on the spatial and temporal scales,which is a hot issue in the field of biodiversity research.However,the patterns and drivers of the beta diversity in mangrove ecosystems are still unclear,especially in mangrove macrobenthic ecosystems in China,and their underlying processes were understudied.To explore the patterns and driving factors of beta diversity of macrobenthos,and reveal the underlying processes of community assembly,we investigated macrobenthic community composition in individual mangroves in Yanpu Bay,Aojiang Estuary,Oujiang Estuary,and Ximen Island mangroves,which located in the northern margin of China.This study used Baselga's approach of beta diversity partitioning based on the Sørensen dissimilarity index,and decomposed beta diversity into turnover and nestedness components to better understand the patterns behind beta diversity.We sampled the macrobenthic organisms and corresponding environmental data(e.g.,water temperature,salinity,dissolved oxygen,sediment factors)and latitude data about four mangroves that are in the northern margin of China.We calculated the beta diversity of macrobenthic communities and quantified the relative contributions of turnover and nestedness to beta diversity.In addition,the Mantel test and multiple regression on distance matrices(MRM)analysis and variation partitioning analysis(VPA)were employed to determine the effect of environmental variables and spatial distance on beta diversity and its components of macrobenthic communities.These methods further revealed the role of environmental filtering and dispersal limitation in community assembly.The results showed that ①There were significant differences in species composition of macrobenthos among different mangroves(P<0.01).The contribution of mangrove turnover components to beta diversity increased with increasing latitude,and it domin-ated the community beta diversity,indicating that they were caused by the replacement of species in space or between com-munities.②The beta diversity increased with the increase of spatial geographical distance,and the similarity of species com-position showed an obvious distance attenuation pattern(Mantel test:P<0.05),it means that the dispersal limitation affected the species composition of the community.③Multiple regression on distance matrices(MRM)analysis showed that sediment silt content is a key environmental factor driving beta diversity of macrobenthic communities.Moreover,the results also indicate that environmental filtration and dispersal limitation played important roles in the community assembly process.This study demonstrates that environmental and spatial factors jointly drive the patterns of beta diversity of macrobenthos communities in mangroves,and environmental filtering and dispersal limitation are important regulatory mechanisms in the process of com-munity assembly.In addition,this study can lay a theoretical foundation for the formation and maintenance mechanism of spe-cies diversity of mangrove macrobenthos community in the northern margin of China.关键词
大型底栖动物/beta多样性/红树林/周转/嵌套/群落构建/环境过滤Key words
macrobenthos/beta diversity/mangrove/turnover/nestedness/community assembly/environmental filtration分类
农业科技引用本文复制引用
上官明珠,胡成业,王晶,方学河,周泽宇,刘永钿,李艺,周鑫,水柏年..我国北缘红树林大型底栖动物群落beta多样性格局及其驱动因素[J].水产学报,2025,49(8):95-108,14.基金项目
国家自然科学基金(42306188) （42306188）
浙江省自然科学基金(LQ21C030006) （LQ21C030006）
浙江省省属高校基本科研业务费(2022J006) （2022J006）
浙江省大学生科技创新活动计划暨新苗人才计划(2022R411A004) National Natural Science Foundation of China(42306188) （2022R411A004）
Zhejiang Provincial Natural Science Founda-tion(LQ21C030006) （LQ21C030006）
Fundamental Research Funds for the Provincial Universities of Zhejiang(2022J006) （2022J006）
Zhejiang Uni-versity Student Science and Technology Innovation Activity Plan(2022R411A004) （2022R411A004）
