Manganese and iron as structuring parameters of microbial communities in Arctic marine sediments from the Baffin Bay
The Arctic Baffin Bay between Canada and Greenland is sea ice-covered during the majority of the year, restricting primary production to the summer months. Sediments receive low amounts of mostly terrestrial- and less marine-derived organic matter. To study microbial communities constrained by physi...
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Online Access: | http://hdl.handle.net/10807/69509 https://doi.org/10.1093/femsec/fiv056 |
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ftunicattolicair:oai:publicatt.unicatt.it:10807/69509 2024-02-11T10:00:46+01:00 Manganese and iron as structuring parameters of microbial communities in Arctic marine sediments from the Baffin Bay Vasileiadis, Sotirios Trevisan, Marco Puglisi, Edoardo Algora, C. Vasileiadis, Sotirio Wasmund, K. Trevisan, Marco Krüger, M. Puglisi, Edoardo Adrian, L. 2015 http://hdl.handle.net/10807/69509 https://doi.org/10.1093/femsec/fiv056 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000359690000010 issue:91 firstpage:N/A lastpage:N/A issueyear:2015 journal:FEMS MICROBIOLOGY ECOLOGY http://hdl.handle.net/10807/69509 doi:10.1093/femsec/fiv056 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84949309635 Baffin Bay Betaproteobacteria Burkholderiales Chloroflexi Dehalococcoidia Illumina sequencing Marine subsurface Microbial diversity Settore AGR/13 - CHIMICA AGRARIA Settore AGR/16 - MICROBIOLOGIA AGRARIA info:eu-repo/semantics/article 2015 ftunicattolicair https://doi.org/10.1093/femsec/fiv056 2024-01-23T23:23:23Z The Arctic Baffin Bay between Canada and Greenland is sea ice-covered during the majority of the year, restricting primary production to the summer months. Sediments receive low amounts of mostly terrestrial- and less marine-derived organic matter. To study microbial communities constrained by physicochemical conditions changing with distance from land and ocean depth, we applied high-throughput 16S rRNA gene sequencing and compared sequence diversity with biogeochemical parameters in 40 different sediment samples. Samples originated from seven cores down to 470 cm below seafloor along a shelf-to-basin transect. Bacterial diversity decreased faster with depth in basin than in shelf sediments, suggesting higher organic matter content sustained diversity into greater depths. All samples were dominated by Betaproteobacteria (mostly order Burkholderiales), which were especially abundant in basin sediments with low organic carbon and high Mn and Fe pore water concentrations. Strong statistical correlations between concentrations of reduced Mn and/or Fe and the relative abundances of Betaproteobacteria suggest that this group is involved in metal reduction in Baffin Bay sediments. Dehalococcoidia (phylum Chloroflexi) were abundant in all samples, especially in shelf sediments with high organic content. This study indicates that Mn and/or Fe play important roles structuring microbial communities in Arctic sediments poor in organic matter. © FEMS 2015. Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Greenland Sea ice Università Cattolica del Sacro Cuore: PubliCatt Arctic Baffin Bay Canada Greenland FEMS Microbiology Ecology 91 6 |
institution |
Open Polar |
collection |
Università Cattolica del Sacro Cuore: PubliCatt |
op_collection_id |
ftunicattolicair |
language |
English |
topic |
Baffin Bay Betaproteobacteria Burkholderiales Chloroflexi Dehalococcoidia Illumina sequencing Marine subsurface Microbial diversity Settore AGR/13 - CHIMICA AGRARIA Settore AGR/16 - MICROBIOLOGIA AGRARIA |
spellingShingle |
Baffin Bay Betaproteobacteria Burkholderiales Chloroflexi Dehalococcoidia Illumina sequencing Marine subsurface Microbial diversity Settore AGR/13 - CHIMICA AGRARIA Settore AGR/16 - MICROBIOLOGIA AGRARIA Vasileiadis, Sotirios Trevisan, Marco Puglisi, Edoardo Manganese and iron as structuring parameters of microbial communities in Arctic marine sediments from the Baffin Bay |
topic_facet |
Baffin Bay Betaproteobacteria Burkholderiales Chloroflexi Dehalococcoidia Illumina sequencing Marine subsurface Microbial diversity Settore AGR/13 - CHIMICA AGRARIA Settore AGR/16 - MICROBIOLOGIA AGRARIA |
description |
The Arctic Baffin Bay between Canada and Greenland is sea ice-covered during the majority of the year, restricting primary production to the summer months. Sediments receive low amounts of mostly terrestrial- and less marine-derived organic matter. To study microbial communities constrained by physicochemical conditions changing with distance from land and ocean depth, we applied high-throughput 16S rRNA gene sequencing and compared sequence diversity with biogeochemical parameters in 40 different sediment samples. Samples originated from seven cores down to 470 cm below seafloor along a shelf-to-basin transect. Bacterial diversity decreased faster with depth in basin than in shelf sediments, suggesting higher organic matter content sustained diversity into greater depths. All samples were dominated by Betaproteobacteria (mostly order Burkholderiales), which were especially abundant in basin sediments with low organic carbon and high Mn and Fe pore water concentrations. Strong statistical correlations between concentrations of reduced Mn and/or Fe and the relative abundances of Betaproteobacteria suggest that this group is involved in metal reduction in Baffin Bay sediments. Dehalococcoidia (phylum Chloroflexi) were abundant in all samples, especially in shelf sediments with high organic content. This study indicates that Mn and/or Fe play important roles structuring microbial communities in Arctic sediments poor in organic matter. © FEMS 2015. |
author2 |
Algora, C. Vasileiadis, Sotirio Wasmund, K. Trevisan, Marco Krüger, M. Puglisi, Edoardo Adrian, L. |
format |
Article in Journal/Newspaper |
author |
Vasileiadis, Sotirios Trevisan, Marco Puglisi, Edoardo |
author_facet |
Vasileiadis, Sotirios Trevisan, Marco Puglisi, Edoardo |
author_sort |
Vasileiadis, Sotirios |
title |
Manganese and iron as structuring parameters of microbial communities in Arctic marine sediments from the Baffin Bay |
title_short |
Manganese and iron as structuring parameters of microbial communities in Arctic marine sediments from the Baffin Bay |
title_full |
Manganese and iron as structuring parameters of microbial communities in Arctic marine sediments from the Baffin Bay |
title_fullStr |
Manganese and iron as structuring parameters of microbial communities in Arctic marine sediments from the Baffin Bay |
title_full_unstemmed |
Manganese and iron as structuring parameters of microbial communities in Arctic marine sediments from the Baffin Bay |
title_sort |
manganese and iron as structuring parameters of microbial communities in arctic marine sediments from the baffin bay |
publishDate |
2015 |
url |
http://hdl.handle.net/10807/69509 https://doi.org/10.1093/femsec/fiv056 |
geographic |
Arctic Baffin Bay Canada Greenland |
geographic_facet |
Arctic Baffin Bay Canada Greenland |
genre |
Arctic Baffin Bay Baffin Bay Baffin Greenland Sea ice |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Greenland Sea ice |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000359690000010 issue:91 firstpage:N/A lastpage:N/A issueyear:2015 journal:FEMS MICROBIOLOGY ECOLOGY http://hdl.handle.net/10807/69509 doi:10.1093/femsec/fiv056 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84949309635 |
op_doi |
https://doi.org/10.1093/femsec/fiv056 |
container_title |
FEMS Microbiology Ecology |
container_volume |
91 |
container_issue |
6 |
_version_ |
1790596480979959808 |