Coupled dynamics of iron, manganese, and phosphorus in brackish coastal sediments populated by cable bacteria

Martijn Hermans; Marina Astudillo Pascual; Thilo Behrends; Wytze Lenstra; Daniel J. Conley; Caroline Slomp

doi:10.1002/lno.11776

Coupled dynamics of iron, manganese, and phosphorus in brackish coastal sediments populated by cable bacteria

Martijn Hermans^*
, Marina Astudillo Pascual
, Thilo Behrends
, Wytze Lenstra
, Daniel J. Conley
, Caroline Slomp

^*Corresponding author for this work

Lund University

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Coastal waters worldwide suffer from increased eutrophication and seasonal bottom water hypoxia. Here, we assess the dynamics of iron (Fe), manganese (Mn), and phosphorus (P) in sediments of the eutrophic, brackish Gulf of Finland populated by cable bacteria. At sites where bottom waters are oxic in spring, surface enrichments of Fe and Mn oxides and high abundances of cable bacteria were observed in sediments upon sampling in early summer. At one site, Fe and P were enriched in a thin layer (~ 3 mm) just below the sediment–water interface. X-ray absorption near edge structure and micro X-ray fluorescence analyses indicate that two-thirds of the P in this layer was associated with poorly crystalline Fe oxides, with an additional contribution of Mn(II) phosphates. The Fe enriched layer was directly overlain by a Mn oxide-rich surface layer (~ 2 mm). The Fe oxide layer was likely of diagenetic origin, formed through dissolution of Fe monosulfides and carbonates, potentially induced by cable bacteria in the preceding months when bottom waters were oxic. Most of the Mn oxides were likely deposited from the water column as part of a cycle of repeated deposition and remobilization. Further research is required to confirm whether cable bacteria activity in spring indeed promotes the formation of distinct layers enriched in Fe, Mn, and P minerals in Gulf of Finland sediments. The temporal variations in biogeochemical cycling in this seasonally hypoxic coastal system, potentially controlled by cable bacteria activity, have little impact on permanent sedimentary Fe, Mn, and P burial.

Original language	English
Pages (from-to)	2611-2631
Number of pages	21
Journal	Limnology and Oceanography
Volume	66
Issue number	7
DOIs	https://doi.org/10.1002/lno.11776
Publication status	Published - Jul 2021

Bibliographical note

Funding Information:
We thank the captain and crew of R/V for their assistance during the Baltic Sea expedition in June 2016 (64PE411). This research was funded by a Vici grant (865.13.005) from the Netherlands Organization for Scientific Research (NWO) and by an ERC Starting Grant (278364) from the European Research Council under the European Community's Seventh Framework Program. This research was also supported by the BONUS COCOA Project (2112932‐1), funded jointly by the EU and FORMAS, and by the Swedish Agency for Marine and Water Management (Havs‐och vattenmyndigheten, DNR 1376‐18). We thank M.J.M. Séguret, K. Wunsch, H. de Waard, J.J. Mulder, J. van Ooijen, and S. Ossebaar for their analytical support. We are grateful to the European Synchrotron Radiation Facility (ESRF) for beam time at the ID21 beamline (experiment ES‐591) in May 2017. We thank the beamline scientists W. de Nolf and A.E. Pradas del Real for their support at the ESRF. We thank an anonymous reviewer and R.C. Aller for constructive comments. Pelagia

Funding Information:
We thank the captain and crew of R/V Pelagia for their assistance during the Baltic Sea expedition in June 2016 (64PE411). This research was funded by a Vici grant (865.13.005) from the Netherlands Organization for Scientific Research (NWO) and by an ERC Starting Grant (278364) from the European Research Council under the European Community's Seventh Framework Program. This research was also supported by the BONUS COCOA Project (2112932-1), funded jointly by the EU and FORMAS, and by the Swedish Agency for Marine and Water Management (Havs-och vattenmyndigheten, DNR 1376-18). We thank M.J.M. S?guret, K. Wunsch, H. de Waard, J.J. Mulder, J. van Ooijen, and S. Ossebaar for their analytical support. We are grateful to the European Synchrotron Radiation Facility (ESRF) for beam time at the ID21 beamline (experiment ES-591) in May 2017. We thank the beamline scientists W. de Nolf and A.E. Pradas del Real for their support at the ESRF. We thank an anonymous reviewer and R.C. Aller for constructive comments.

Publisher Copyright:
© 2021 The Authors. Limnology and Oceanography published by Wiley Periodicals LLC on behalf of Association for the Sciences of Limnology and Oceanography.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 14 Life Below Water

Access to Document

10.1002/lno.11776Licence: CC BY

lno.11776Final published version, 2.79 MBLicence: CC BY

Cite this

@article{737735f5f8694b4daad7a66557f38893,

title = "Coupled dynamics of iron, manganese, and phosphorus in brackish coastal sediments populated by cable bacteria",

abstract = "Coastal waters worldwide suffer from increased eutrophication and seasonal bottom water hypoxia. Here, we assess the dynamics of iron (Fe), manganese (Mn), and phosphorus (P) in sediments of the eutrophic, brackish Gulf of Finland populated by cable bacteria. At sites where bottom waters are oxic in spring, surface enrichments of Fe and Mn oxides and high abundances of cable bacteria were observed in sediments upon sampling in early summer. At one site, Fe and P were enriched in a thin layer (\textasciitilde{} 3 mm) just below the sediment–water interface. X-ray absorption near edge structure and micro X-ray fluorescence analyses indicate that two-thirds of the P in this layer was associated with poorly crystalline Fe oxides, with an additional contribution of Mn(II) phosphates. The Fe enriched layer was directly overlain by a Mn oxide-rich surface layer (\textasciitilde{} 2 mm). The Fe oxide layer was likely of diagenetic origin, formed through dissolution of Fe monosulfides and carbonates, potentially induced by cable bacteria in the preceding months when bottom waters were oxic. Most of the Mn oxides were likely deposited from the water column as part of a cycle of repeated deposition and remobilization. Further research is required to confirm whether cable bacteria activity in spring indeed promotes the formation of distinct layers enriched in Fe, Mn, and P minerals in Gulf of Finland sediments. The temporal variations in biogeochemical cycling in this seasonally hypoxic coastal system, potentially controlled by cable bacteria activity, have little impact on permanent sedimentary Fe, Mn, and P burial.",

author = "Martijn Hermans and \{Astudillo Pascual\}, Marina and Thilo Behrends and Wytze Lenstra and Conley, \{Daniel J.\} and Caroline Slomp",

note = "Funding Information: We thank the captain and crew of R/V for their assistance during the Baltic Sea expedition in June 2016 (64PE411). This research was funded by a Vici grant (865.13.005) from the Netherlands Organization for Scientific Research (NWO) and by an ERC Starting Grant (278364) from the European Research Council under the European Community's Seventh Framework Program. This research was also supported by the BONUS COCOA Project (2112932‐1), funded jointly by the EU and FORMAS, and by the Swedish Agency for Marine and Water Management (Havs‐och vattenmyndigheten, DNR 1376‐18). We thank M.J.M. S{\'e}guret, K. Wunsch, H. de Waard, J.J. Mulder, J. van Ooijen, and S. Ossebaar for their analytical support. We are grateful to the European Synchrotron Radiation Facility (ESRF) for beam time at the ID21 beamline (experiment ES‐591) in May 2017. We thank the beamline scientists W. de Nolf and A.E. Pradas del Real for their support at the ESRF. We thank an anonymous reviewer and R.C. Aller for constructive comments. Pelagia Funding Information: We thank the captain and crew of R/V Pelagia for their assistance during the Baltic Sea expedition in June 2016 (64PE411). This research was funded by a Vici grant (865.13.005) from the Netherlands Organization for Scientific Research (NWO) and by an ERC Starting Grant (278364) from the European Research Council under the European Community's Seventh Framework Program. This research was also supported by the BONUS COCOA Project (2112932-1), funded jointly by the EU and FORMAS, and by the Swedish Agency for Marine and Water Management (Havs-och vattenmyndigheten, DNR 1376-18). We thank M.J.M. S?guret, K. Wunsch, H. de Waard, J.J. Mulder, J. van Ooijen, and S. Ossebaar for their analytical support. We are grateful to the European Synchrotron Radiation Facility (ESRF) for beam time at the ID21 beamline (experiment ES-591) in May 2017. We thank the beamline scientists W. de Nolf and A.E. Pradas del Real for their support at the ESRF. We thank an anonymous reviewer and R.C. Aller for constructive comments. Publisher Copyright: {\textcopyright} 2021 The Authors. Limnology and Oceanography published by Wiley Periodicals LLC on behalf of Association for the Sciences of Limnology and Oceanography.",

year = "2021",

month = jul,

doi = "10.1002/lno.11776",

language = "English",

volume = "66",

pages = "2611--2631",

journal = "Limnology and Oceanography",

issn = "0024-3590",

publisher = "John Wiley and Sons Inc.",

number = "7",

}

TY - JOUR

T1 - Coupled dynamics of iron, manganese, and phosphorus in brackish coastal sediments populated by cable bacteria

AU - Hermans, Martijn

AU - Astudillo Pascual, Marina

AU - Behrends, Thilo

AU - Lenstra, Wytze

AU - Conley, Daniel J.

AU - Slomp, Caroline

N1 - Funding Information: We thank the captain and crew of R/V for their assistance during the Baltic Sea expedition in June 2016 (64PE411). This research was funded by a Vici grant (865.13.005) from the Netherlands Organization for Scientific Research (NWO) and by an ERC Starting Grant (278364) from the European Research Council under the European Community's Seventh Framework Program. This research was also supported by the BONUS COCOA Project (2112932‐1), funded jointly by the EU and FORMAS, and by the Swedish Agency for Marine and Water Management (Havs‐och vattenmyndigheten, DNR 1376‐18). We thank M.J.M. Séguret, K. Wunsch, H. de Waard, J.J. Mulder, J. van Ooijen, and S. Ossebaar for their analytical support. We are grateful to the European Synchrotron Radiation Facility (ESRF) for beam time at the ID21 beamline (experiment ES‐591) in May 2017. We thank the beamline scientists W. de Nolf and A.E. Pradas del Real for their support at the ESRF. We thank an anonymous reviewer and R.C. Aller for constructive comments. Pelagia Funding Information: We thank the captain and crew of R/V Pelagia for their assistance during the Baltic Sea expedition in June 2016 (64PE411). This research was funded by a Vici grant (865.13.005) from the Netherlands Organization for Scientific Research (NWO) and by an ERC Starting Grant (278364) from the European Research Council under the European Community's Seventh Framework Program. This research was also supported by the BONUS COCOA Project (2112932-1), funded jointly by the EU and FORMAS, and by the Swedish Agency for Marine and Water Management (Havs-och vattenmyndigheten, DNR 1376-18). We thank M.J.M. S?guret, K. Wunsch, H. de Waard, J.J. Mulder, J. van Ooijen, and S. Ossebaar for their analytical support. We are grateful to the European Synchrotron Radiation Facility (ESRF) for beam time at the ID21 beamline (experiment ES-591) in May 2017. We thank the beamline scientists W. de Nolf and A.E. Pradas del Real for their support at the ESRF. We thank an anonymous reviewer and R.C. Aller for constructive comments. Publisher Copyright: © 2021 The Authors. Limnology and Oceanography published by Wiley Periodicals LLC on behalf of Association for the Sciences of Limnology and Oceanography.

PY - 2021/7

Y1 - 2021/7

N2 - Coastal waters worldwide suffer from increased eutrophication and seasonal bottom water hypoxia. Here, we assess the dynamics of iron (Fe), manganese (Mn), and phosphorus (P) in sediments of the eutrophic, brackish Gulf of Finland populated by cable bacteria. At sites where bottom waters are oxic in spring, surface enrichments of Fe and Mn oxides and high abundances of cable bacteria were observed in sediments upon sampling in early summer. At one site, Fe and P were enriched in a thin layer (~ 3 mm) just below the sediment–water interface. X-ray absorption near edge structure and micro X-ray fluorescence analyses indicate that two-thirds of the P in this layer was associated with poorly crystalline Fe oxides, with an additional contribution of Mn(II) phosphates. The Fe enriched layer was directly overlain by a Mn oxide-rich surface layer (~ 2 mm). The Fe oxide layer was likely of diagenetic origin, formed through dissolution of Fe monosulfides and carbonates, potentially induced by cable bacteria in the preceding months when bottom waters were oxic. Most of the Mn oxides were likely deposited from the water column as part of a cycle of repeated deposition and remobilization. Further research is required to confirm whether cable bacteria activity in spring indeed promotes the formation of distinct layers enriched in Fe, Mn, and P minerals in Gulf of Finland sediments. The temporal variations in biogeochemical cycling in this seasonally hypoxic coastal system, potentially controlled by cable bacteria activity, have little impact on permanent sedimentary Fe, Mn, and P burial.

AB - Coastal waters worldwide suffer from increased eutrophication and seasonal bottom water hypoxia. Here, we assess the dynamics of iron (Fe), manganese (Mn), and phosphorus (P) in sediments of the eutrophic, brackish Gulf of Finland populated by cable bacteria. At sites where bottom waters are oxic in spring, surface enrichments of Fe and Mn oxides and high abundances of cable bacteria were observed in sediments upon sampling in early summer. At one site, Fe and P were enriched in a thin layer (~ 3 mm) just below the sediment–water interface. X-ray absorption near edge structure and micro X-ray fluorescence analyses indicate that two-thirds of the P in this layer was associated with poorly crystalline Fe oxides, with an additional contribution of Mn(II) phosphates. The Fe enriched layer was directly overlain by a Mn oxide-rich surface layer (~ 2 mm). The Fe oxide layer was likely of diagenetic origin, formed through dissolution of Fe monosulfides and carbonates, potentially induced by cable bacteria in the preceding months when bottom waters were oxic. Most of the Mn oxides were likely deposited from the water column as part of a cycle of repeated deposition and remobilization. Further research is required to confirm whether cable bacteria activity in spring indeed promotes the formation of distinct layers enriched in Fe, Mn, and P minerals in Gulf of Finland sediments. The temporal variations in biogeochemical cycling in this seasonally hypoxic coastal system, potentially controlled by cable bacteria activity, have little impact on permanent sedimentary Fe, Mn, and P burial.

UR - https://www.scopus.com/pages/publications/85105141961

U2 - 10.1002/lno.11776

DO - 10.1002/lno.11776

M3 - Article

C2 - 34413543

SN - 0024-3590

VL - 66

SP - 2611

EP - 2631

JO - Limnology and Oceanography

JF - Limnology and Oceanography

IS - 7

ER -

Coupled dynamics of iron, manganese, and phosphorus in brackish coastal sediments populated by cable bacteria

Abstract

Bibliographical note

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this