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The critical role of pore size on depth-dependent microbial cell counts in sediments
Cell counts decrease with sediment depth. Typical explanations consider limiting factors such as water availability and chemistry, carbon source, nutrients, energy and temperature, and overlook the role of pore size. Our analyses consider sediment self-compaction, the evolution of pore size with dep...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7729949/ https://www.ncbi.nlm.nih.gov/pubmed/33303780 http://dx.doi.org/10.1038/s41598-020-78714-3 |
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author | Park, Junghee Santamarina, J. Carlos |
author_facet | Park, Junghee Santamarina, J. Carlos |
author_sort | Park, Junghee |
collection | PubMed |
description | Cell counts decrease with sediment depth. Typical explanations consider limiting factors such as water availability and chemistry, carbon source, nutrients, energy and temperature, and overlook the role of pore size. Our analyses consider sediment self-compaction, the evolution of pore size with depth, and the probability of pores larger than the microbial size to compute the volume fraction of life-compatible pores. We evaluate cell counts vs. depth profiles gathered at 116 sites worldwide. Results confirm the critical role of pore size on cell counts in the subsurface and explain much of the data spread (from ~ 9 orders of magnitude range in cell counts to ~ 2 orders). Cells colonize pores often forming dense biofilms, thus, cell counts in pores are orders of magnitude higher than in the water column. Similar arguments apply to rocks. |
format | Online Article Text |
id | pubmed-7729949 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-77299492020-12-14 The critical role of pore size on depth-dependent microbial cell counts in sediments Park, Junghee Santamarina, J. Carlos Sci Rep Article Cell counts decrease with sediment depth. Typical explanations consider limiting factors such as water availability and chemistry, carbon source, nutrients, energy and temperature, and overlook the role of pore size. Our analyses consider sediment self-compaction, the evolution of pore size with depth, and the probability of pores larger than the microbial size to compute the volume fraction of life-compatible pores. We evaluate cell counts vs. depth profiles gathered at 116 sites worldwide. Results confirm the critical role of pore size on cell counts in the subsurface and explain much of the data spread (from ~ 9 orders of magnitude range in cell counts to ~ 2 orders). Cells colonize pores often forming dense biofilms, thus, cell counts in pores are orders of magnitude higher than in the water column. Similar arguments apply to rocks. Nature Publishing Group UK 2020-12-10 /pmc/articles/PMC7729949/ /pubmed/33303780 http://dx.doi.org/10.1038/s41598-020-78714-3 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Park, Junghee Santamarina, J. Carlos The critical role of pore size on depth-dependent microbial cell counts in sediments |
title | The critical role of pore size on depth-dependent microbial cell counts in sediments |
title_full | The critical role of pore size on depth-dependent microbial cell counts in sediments |
title_fullStr | The critical role of pore size on depth-dependent microbial cell counts in sediments |
title_full_unstemmed | The critical role of pore size on depth-dependent microbial cell counts in sediments |
title_short | The critical role of pore size on depth-dependent microbial cell counts in sediments |
title_sort | critical role of pore size on depth-dependent microbial cell counts in sediments |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7729949/ https://www.ncbi.nlm.nih.gov/pubmed/33303780 http://dx.doi.org/10.1038/s41598-020-78714-3 |
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