The critical role of pore size on depth-dependent microbial cell counts in sediments

Abstract 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...

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Autores principales:	Junghee Park, J. Carlos Santamarina
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5f31cea695d343a9a11ba3942d38dc05
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spelling	oai:doaj.org-article:5f31cea695d343a9a11ba3942d38dc052021-12-02T15:11:53ZThe critical role of pore size on depth-dependent microbial cell counts in sediments10.1038/s41598-020-78714-32045-2322https://doaj.org/article/5f31cea695d343a9a11ba3942d38dc052020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78714-3https://doaj.org/toc/2045-2322Abstract 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.Junghee ParkJ. Carlos SantamarinaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-7 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Junghee Park J. Carlos Santamarina The critical role of pore size on depth-dependent microbial cell counts in sediments
description	Abstract 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	article
author	Junghee Park J. Carlos Santamarina
author_facet	Junghee Park J. Carlos Santamarina
author_sort	Junghee Park
title	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_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_sort	critical role of pore size on depth-dependent microbial cell counts in sediments
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/5f31cea695d343a9a11ba3942d38dc05
work_keys_str_mv	AT jungheepark thecriticalroleofporesizeondepthdependentmicrobialcellcountsinsediments AT jcarlossantamarina thecriticalroleofporesizeondepthdependentmicrobialcellcountsinsediments AT jungheepark criticalroleofporesizeondepthdependentmicrobialcellcountsinsediments AT jcarlossantamarina criticalroleofporesizeondepthdependentmicrobialcellcountsinsediments
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The critical role of pore size on depth-dependent microbial cell counts in sediments

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