Minor impact of ocean acidification to the composition of the active microbial community in an Arctic sediment
Effects of ocean acidification on the composition of the active bacterial and archaeal community within Arctic surface sediment was analysed in detail using 16S rRNA 454 pyrosequencing. Intact sediment cores were collected and exposed to one of five different pCO2 concentrations [380 (present day),...
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ftunivtsydney:oai:opus.lib.uts.edu.au:10453/37819 2023-05-15T14:54:50+02:00 Minor impact of ocean acidification to the composition of the active microbial community in an Arctic sediment Tait, K Laverock, B Shaw, J Somerfield, PJ Widdicombe, S 2013-12-01 application/pdf http://hdl.handle.net/10453/37819 unknown Environmental Microbiology Reports 10.1111/1758-2229.12087 Environmental Microbiology Reports, 2013, 5 (6), pp. 851 - 860 http://hdl.handle.net/10453/37819 Microbiology Bacteria Archaea Carbon Dioxide RNA Ribosomal 16S Sequence Analysis DNA Water Microbiology Biodiversity Seawater Phylogeny Hydrogen-Ion Concentration Geologic Sediments Arctic Regions Oceans and Seas Microbial Consortia Journal Article 2013 ftunivtsydney 2022-03-13T13:32:18Z Effects of ocean acidification on the composition of the active bacterial and archaeal community within Arctic surface sediment was analysed in detail using 16S rRNA 454 pyrosequencing. Intact sediment cores were collected and exposed to one of five different pCO2 concentrations [380 (present day), 540, 750, 1120 and 3000 μatm] and RNA extracted after a period of 14 days exposure. Measurements of diversity and multivariate similarity indicated very little difference between pCO2 treatments. Only when the highest and lowest pCO2 treatments were compared were significant differences evident, namely increases in the abundance of operational taxonomic units most closely related to the Halobacteria and differences to the presence/absence structure of the Planctomycetes. The relative abundance of members of the classes Planctomycetacia and Nitrospira increased with increasing pCO2 concentration, indicating that these groups may be able to take advantage of changing pH or pCO2 conditions. The modest response of the active microbial communities associated with these sediments may be due to the low and fluctuating pore-water pH already experienced by sediment microbes, a result of the pH buffering capacity of marine sediments, or due to currently unknown factors. Further research is required to fully understand the impact of elevated CO2 on sediment physicochemical parameters, biogeochemistry and microbial community dynamics. © 2013 John Wiley & Sons Ltd and Society for Applied Microbiology. Article in Journal/Newspaper Arctic Ocean acidification University of Technology Sydney: OPUS - Open Publications of UTS Scholars Arctic |
institution |
Open Polar |
collection |
University of Technology Sydney: OPUS - Open Publications of UTS Scholars |
op_collection_id |
ftunivtsydney |
language |
unknown |
topic |
Microbiology Bacteria Archaea Carbon Dioxide RNA Ribosomal 16S Sequence Analysis DNA Water Microbiology Biodiversity Seawater Phylogeny Hydrogen-Ion Concentration Geologic Sediments Arctic Regions Oceans and Seas Microbial Consortia |
spellingShingle |
Microbiology Bacteria Archaea Carbon Dioxide RNA Ribosomal 16S Sequence Analysis DNA Water Microbiology Biodiversity Seawater Phylogeny Hydrogen-Ion Concentration Geologic Sediments Arctic Regions Oceans and Seas Microbial Consortia Tait, K Laverock, B Shaw, J Somerfield, PJ Widdicombe, S Minor impact of ocean acidification to the composition of the active microbial community in an Arctic sediment |
topic_facet |
Microbiology Bacteria Archaea Carbon Dioxide RNA Ribosomal 16S Sequence Analysis DNA Water Microbiology Biodiversity Seawater Phylogeny Hydrogen-Ion Concentration Geologic Sediments Arctic Regions Oceans and Seas Microbial Consortia |
description |
Effects of ocean acidification on the composition of the active bacterial and archaeal community within Arctic surface sediment was analysed in detail using 16S rRNA 454 pyrosequencing. Intact sediment cores were collected and exposed to one of five different pCO2 concentrations [380 (present day), 540, 750, 1120 and 3000 μatm] and RNA extracted after a period of 14 days exposure. Measurements of diversity and multivariate similarity indicated very little difference between pCO2 treatments. Only when the highest and lowest pCO2 treatments were compared were significant differences evident, namely increases in the abundance of operational taxonomic units most closely related to the Halobacteria and differences to the presence/absence structure of the Planctomycetes. The relative abundance of members of the classes Planctomycetacia and Nitrospira increased with increasing pCO2 concentration, indicating that these groups may be able to take advantage of changing pH or pCO2 conditions. The modest response of the active microbial communities associated with these sediments may be due to the low and fluctuating pore-water pH already experienced by sediment microbes, a result of the pH buffering capacity of marine sediments, or due to currently unknown factors. Further research is required to fully understand the impact of elevated CO2 on sediment physicochemical parameters, biogeochemistry and microbial community dynamics. © 2013 John Wiley & Sons Ltd and Society for Applied Microbiology. |
format |
Article in Journal/Newspaper |
author |
Tait, K Laverock, B Shaw, J Somerfield, PJ Widdicombe, S |
author_facet |
Tait, K Laverock, B Shaw, J Somerfield, PJ Widdicombe, S |
author_sort |
Tait, K |
title |
Minor impact of ocean acidification to the composition of the active microbial community in an Arctic sediment |
title_short |
Minor impact of ocean acidification to the composition of the active microbial community in an Arctic sediment |
title_full |
Minor impact of ocean acidification to the composition of the active microbial community in an Arctic sediment |
title_fullStr |
Minor impact of ocean acidification to the composition of the active microbial community in an Arctic sediment |
title_full_unstemmed |
Minor impact of ocean acidification to the composition of the active microbial community in an Arctic sediment |
title_sort |
minor impact of ocean acidification to the composition of the active microbial community in an arctic sediment |
publishDate |
2013 |
url |
http://hdl.handle.net/10453/37819 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ocean acidification |
genre_facet |
Arctic Ocean acidification |
op_relation |
Environmental Microbiology Reports 10.1111/1758-2229.12087 Environmental Microbiology Reports, 2013, 5 (6), pp. 851 - 860 http://hdl.handle.net/10453/37819 |
_version_ |
1766326582587162624 |