Spatial analysis of bacteria in brackish lake sediment  

作　　者：Jean-Sebastien Beaulne Samir RMishra Mrutyunjay Suar Ananta Narayan Panda Gurdeep Rastogi Ajit Kumar Pattnaik Vishakha Raina Timothy MVogel 

机构地区：[1]Environmental Microbial Genomics, Ecole Centrale de Lyon,Universit e de Lyon,Ecully,69134 CEDEX,France [2]Environmental Biotechnology Laboratory,School of Biotechnology,KIIT University,Bhubaneswar,Odisha,751024,India [3]Wetland Research and Training Center,Chilika Development Authority,Department of Forest and Environment,Government of Odisha,Bhubaneswar,751014,India [4]ISARA,Department of Agroecology and Environment,Lyon,23 rue Jean Baldassini 69364 LYON CEDEX 07,France

出　　处：《International Journal of Sediment Research》2020年第3期227-236,共10页国际泥沙研究（英文版）

基　　金：The authors are grateful to the Chilika Development Authority(CDA);the Bhubaneswar and World Bank-supported Integrated Coastal Zone Management Project for providing financial assistance;part of the European project Trainbiodiverse and was funded by the Marie Curie Actions。

摘　　要：The spatial distribution of bacterial communities inhabiting sediment is heterogeneous at different spatial scales,but mostly unexplored.Here,it is postulated that the heterogeneity of the bacterial community composition varies at the same scale of the heterogeneity of sediment chemical properties.The large spatial scale(km)diversity in sediment from a brackish water lagoon(Chilika Lake,India)is studied,considering the large scale physical and chemical characteristics of land cover,climate,pH,and salinity.Seventy-two samples(24 stations,3 seasons:winter,rainy,and summer)of sediment from Chilika Lake were analyzed by 16S ribosomal ribonucleic acid(rRNA)gene sequencing,and the relations with land cover and other physico-chemical parameters are discussed.More samples were collected after a severe cyclonic storm(Phailin)passed near the lagoon in 2013,to see the impact of the tropical storm on the spatial and temporal distribution of bacteria in the sediment.The results demonstrate clear spatial relations between physico-chemical parameters(e.g.,salinity),land surfaces(e.g.,drainage area),and the distribution of sediment microbial communities.The spatial distribution of bacterial communities inhabiting sediment is heterogeneous at different spatial scales,but mostly unexplored.Here,it is postulated that the heterogeneity of the bacterial community composition varies at the same scale of the heterogeneity of sediment chemical properties.The large spatial scale(km) diversity in sediment from a brackish water lagoon(Chilika Lake,India) is studied,considering the large scale physical and chemical characteristics of land cover,climate,pH,and salinity.Seventy-two samples(24 stations,3 seasons:winter,rainy,and summer) of sediment from Chilika Lake were analyzed by 16 S ribosomal ribonucleic acid(rRNA) gene sequencing,and the relations with land cover and other physico-chemical paramete rs are discussed.Mo re samples were collected after a severe cyclonic storm(Phailin) passed near the lagoon in 2013,to see the impact of the tropical storm on the spatial and tempo ral distribution of bacteria in the sediment.The results demonstrate clear spatial relations between physico-chemical parameters(e.g.,salinity),land surfaces(e.g.,drainage area),and the distribution of sediment microbial communities.

关 键 词：SALINITY 16S RRNA Macro-scale SEDIMENT GIS 

分 类 号：Q938.1[生物学—微生物学]