Macrofaunal control of microbial community structure in continental margin sediments
| Autor: | Erik Kristensen, Lorenzo Lagostina, Stefano M. Bernasconi, Hans Røy, Damian Bölsterli, Chih-Chieh Su, Christof Meile, Bo Barker Jørgensen, Marit-Solveig Seidenkrantz, Mark A. Lever, Clemens Glombitza, Longhui Deng, Xingguo Han |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Geologic Sediments
Redox state burrow ventilation Nitrogen particle reworking Microbiology Carbon cycle 03 medical and health sciences Continental margin bioturbation Seawater Organic matter Phylogeny 030304 developmental biology Total organic carbon chemistry.chemical_classification 0303 health sciences Multidisciplinary organic carbon sources Bacteria 030306 microbiology Microbiota Community structure Particle reworking Biodiversity Biological Sciences Archaea Carbon Seafloor spreading Oxygen redox state Oceanography chemistry Microbial population biology Bioturbation Geology |
| Zdroj: | Deng, L, Bölsterli, D, Kristensen, E, Meile, C, Su, C C, Bernasconi, S M, Seidenkrantz, M S, Glombitza, C, Lagostina, L, Han, X, Jørgensen, B B, Røy, H & Lever, M A 2020, ' Macrofaunal control of microbial community structure in continental margin sediments ', Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 27, pp. 15911-15922 . https://doi.org/10.1073/pnas.1917494117 Deng, L, Bölsterli, D, Kristensen, E, Meile, C, Su, C-C, Bernasconi, S M, Seidenkrantz, M-S, Glombitza, C, Lagostina, L, Han, X, Jørgensen, B B, Røy, H & Lever, M A 2020, ' Macrofaunal control of microbial community structure in continental margin sediments ', Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 27, pp. 15911-15922 . https://doi.org/10.1073/pnas.1917494117 Proceedings of the National Academy of Sciences of the United States of America, 117 (27) Proceedings of the National Academy of Sciences of the United States of America |
| ISSN: | 0027-8424 1091-6490 |
| DOI: | 10.1073/pnas.1917494117 |
| Popis: | Through a process called “bioturbation,” burrowing macrofauna have altered the seafloor habitat and modified global carbon cycling since the Cambrian. However, the impact of macrofauna on the community structure of microorganisms is poorly understood. Here, we show that microbial communities across bioturbated, but geochemically and sedimentologically divergent, continental margin sites are highly similar but differ clearly from those in nonbioturbated surface and underlying subsurface sediments. Solid- and solute-phase geochemical analyses combined with modeled bioturbation activities reveal that dissolved O2 introduction by burrow ventilation is the major driver of archaeal community structure. By contrast, solid-phase reworking, which regulates the distribution of fresh, algal organic matter, is the main control of bacterial community structure. In nonbioturbated surface sediments and in subsurface sediments, bacterial and archaeal communities are more divergent between locations and appear mainly driven by site-specific differences in organic carbon sources. Proceedings of the National Academy of Sciences of the United States of America, 117 (27) ISSN:0027-8424 ISSN:1091-6490 |
| Databáze: | OpenAIRE |
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