Image_1_Microbial Selection and Survival in Subseafloor Sediment.JPEG
Many studies have examined relationships of microorganisms to geochemical zones in subseafloor sediment. However, responses to selective pressure and patterns of community succession with sediment depth have rarely been examined. Here we use 16S rDNA sequencing to examine the succession of microbial...
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ftfrontimediafig:oai:figshare.com:article/8121533 2023-05-15T15:43:35+02:00 Image_1_Microbial Selection and Survival in Subseafloor Sediment.JPEG John B. Kirkpatrick Emily A. Walsh Steven D’Hondt 2019-05-14T04:10:33Z https://doi.org/10.3389/fmicb.2019.00956.s002 https://figshare.com/articles/Image_1_Microbial_Selection_and_Survival_in_Subseafloor_Sediment_JPEG/8121533 unknown doi:10.3389/fmicb.2019.00956.s002 https://figshare.com/articles/Image_1_Microbial_Selection_and_Survival_in_Subseafloor_Sediment_JPEG/8121533 CC BY 4.0 CC-BY Microbiology Microbial Genetics Microbial Ecology Mycology marine sediment bacteria marine sediment archaea deep biosphere microbial selection 16S rDNA U1343 NGHP-14 Image Figure 2019 ftfrontimediafig https://doi.org/10.3389/fmicb.2019.00956.s002 2019-05-15T22:58:58Z Many studies have examined relationships of microorganisms to geochemical zones in subseafloor sediment. However, responses to selective pressure and patterns of community succession with sediment depth have rarely been examined. Here we use 16S rDNA sequencing to examine the succession of microbial communities at sites in the Indian Ocean and the Bering Sea. The sediment ranges in depth from 0.16 to 332 m below seafloor and in age from 660 to 1,300,000 years. The majority of subseafloor taxonomic diversity is present in the shallowest depth sampled. The best predictor of sequence presence or absence in the oldest sediment is relative abundance in the near-seafloor sediment. This relationship suggests that perseverance of specific taxa into deep, old sediment is primarily controlled by the taxonomic abundance that existed when the sediment was near the seafloor. The operational taxonomic units that dominate at depth comprise a subset of the local seafloor community at each site, rather than a grown-in group of geographically widespread subseafloor specialists. At both sites, most taxa classified as abundant decrease in relative frequency with increasing sediment depth and age. Comparison of community composition to cell counts at the Bering Sea site indicates that the rise of the few dominant taxa in the deep subseafloor community does not require net replication, but might simply result from lower mortality relative to competing taxa on the long timescale of community burial. Still Image Bering Sea Frontiers: Figshare Bering Sea Indian Perseverance ENVELOPE(162.200,162.200,-76.800,-76.800) |
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Open Polar |
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Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Microbiology Microbial Genetics Microbial Ecology Mycology marine sediment bacteria marine sediment archaea deep biosphere microbial selection 16S rDNA U1343 NGHP-14 |
spellingShingle |
Microbiology Microbial Genetics Microbial Ecology Mycology marine sediment bacteria marine sediment archaea deep biosphere microbial selection 16S rDNA U1343 NGHP-14 John B. Kirkpatrick Emily A. Walsh Steven D’Hondt Image_1_Microbial Selection and Survival in Subseafloor Sediment.JPEG |
topic_facet |
Microbiology Microbial Genetics Microbial Ecology Mycology marine sediment bacteria marine sediment archaea deep biosphere microbial selection 16S rDNA U1343 NGHP-14 |
description |
Many studies have examined relationships of microorganisms to geochemical zones in subseafloor sediment. However, responses to selective pressure and patterns of community succession with sediment depth have rarely been examined. Here we use 16S rDNA sequencing to examine the succession of microbial communities at sites in the Indian Ocean and the Bering Sea. The sediment ranges in depth from 0.16 to 332 m below seafloor and in age from 660 to 1,300,000 years. The majority of subseafloor taxonomic diversity is present in the shallowest depth sampled. The best predictor of sequence presence or absence in the oldest sediment is relative abundance in the near-seafloor sediment. This relationship suggests that perseverance of specific taxa into deep, old sediment is primarily controlled by the taxonomic abundance that existed when the sediment was near the seafloor. The operational taxonomic units that dominate at depth comprise a subset of the local seafloor community at each site, rather than a grown-in group of geographically widespread subseafloor specialists. At both sites, most taxa classified as abundant decrease in relative frequency with increasing sediment depth and age. Comparison of community composition to cell counts at the Bering Sea site indicates that the rise of the few dominant taxa in the deep subseafloor community does not require net replication, but might simply result from lower mortality relative to competing taxa on the long timescale of community burial. |
format |
Still Image |
author |
John B. Kirkpatrick Emily A. Walsh Steven D’Hondt |
author_facet |
John B. Kirkpatrick Emily A. Walsh Steven D’Hondt |
author_sort |
John B. Kirkpatrick |
title |
Image_1_Microbial Selection and Survival in Subseafloor Sediment.JPEG |
title_short |
Image_1_Microbial Selection and Survival in Subseafloor Sediment.JPEG |
title_full |
Image_1_Microbial Selection and Survival in Subseafloor Sediment.JPEG |
title_fullStr |
Image_1_Microbial Selection and Survival in Subseafloor Sediment.JPEG |
title_full_unstemmed |
Image_1_Microbial Selection and Survival in Subseafloor Sediment.JPEG |
title_sort |
image_1_microbial selection and survival in subseafloor sediment.jpeg |
publishDate |
2019 |
url |
https://doi.org/10.3389/fmicb.2019.00956.s002 https://figshare.com/articles/Image_1_Microbial_Selection_and_Survival_in_Subseafloor_Sediment_JPEG/8121533 |
long_lat |
ENVELOPE(162.200,162.200,-76.800,-76.800) |
geographic |
Bering Sea Indian Perseverance |
geographic_facet |
Bering Sea Indian Perseverance |
genre |
Bering Sea |
genre_facet |
Bering Sea |
op_relation |
doi:10.3389/fmicb.2019.00956.s002 https://figshare.com/articles/Image_1_Microbial_Selection_and_Survival_in_Subseafloor_Sediment_JPEG/8121533 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2019.00956.s002 |
_version_ |
1766377768138833920 |