The iron wheel in Lac Pavin: Interaction with phosphorus cycle

Vincent Busigny, Didier Jézéquel, Julie Cosmidis, Eric Viollier, Karim Benzerara, Noah J. Planavsky, Patrick Albéric, Oanez Lebeau, Gérard Sarazin, Gil Michard

Research output: Chapter in Book/Report/Conference proceedingChapter

6 Citations (Scopus)

Abstract

Lac Pavin is a crater lake, characterized by water column stratification, with oxygenated shallow waters lying above anoxic and ferruginous deep waters. In the deep waters, ferrous iron, Fe(II)aq, is the main dissolved cation, with concentrations up to 1 mM. Iron is efficiently confined below the oxic-anoxic boundary due to the formation of insoluble ferric iron species, Fe(III)s, by oxidation with O2 and other oxidants (e.g., NO3-, Mn(IV)). The Fe(III)s particles settle down and are reduced in the anoxic waters and at the lake bottom by reaction with organic matter to soluble Fe(II)aq. It then diffuses upward in the water column and finally is re-oxidized to Fe(III) at the redox boundary. This process, known as the “iron wheel”, is described in the present paper that reviews available data for dissolved and particulate matter in the water column, settling particles collected by sediment traps and sediment cores. Detailed analyses for some major and trace element concentrations, along with iron speciation and isotope composition, high-resolution microscopy, and geochemical modeling provide a picture of biogeochemical cycling in this Fe-rich aqueous system. At Lac Pavin the P and Fe cycles are tightly coupled. Orthophosphate is sorbed onto Fe oxyhydroxides and/or precipitated as Fe(II)-Fe(III)-phosphates at the redox interface, confining P ions in the deep anoxic waters. Deeper in the water column, particulate Fe concentrations progressively increase due to Fe(II) phosphate (vivianite) formation. In the sediment, Fe is buried as various ferrous minerals, such as vivianite, pyrite and siderite.

Original languageEnglish (US)
Title of host publicationLake Pavin
Subtitle of host publicationHistory, Geology, Biogeochemistry, and Sedimentology of a Deep Meromictic Maar Lake
PublisherSpringer International Publishing
Pages205-220
Number of pages16
ISBN (Electronic)9783319399614
ISBN (Print)9783319399607
DOIs
StatePublished - Jan 1 2016

Fingerprint

phosphorus cycle
wheels
Phosphorus
Iron
iron
phosphorus
water column
Water
vivianite
water
particulates
deep water
phosphate
phosphates
dissolved matter
lakes
particle settling
sediments
Phosphates
crater lake

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)
  • Environmental Science(all)
  • Immunology and Microbiology(all)
  • Earth and Planetary Sciences(all)

Cite this

Busigny, V., Jézéquel, D., Cosmidis, J., Viollier, E., Benzerara, K., Planavsky, N. J., ... Michard, G. (2016). The iron wheel in Lac Pavin: Interaction with phosphorus cycle. In Lake Pavin: History, Geology, Biogeochemistry, and Sedimentology of a Deep Meromictic Maar Lake (pp. 205-220). Springer International Publishing. https://doi.org/10.1007/978-3-319-39961-4_12
Busigny, Vincent ; Jézéquel, Didier ; Cosmidis, Julie ; Viollier, Eric ; Benzerara, Karim ; Planavsky, Noah J. ; Albéric, Patrick ; Lebeau, Oanez ; Sarazin, Gérard ; Michard, Gil. / The iron wheel in Lac Pavin : Interaction with phosphorus cycle. Lake Pavin: History, Geology, Biogeochemistry, and Sedimentology of a Deep Meromictic Maar Lake. Springer International Publishing, 2016. pp. 205-220
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author = "Vincent Busigny and Didier J{\'e}z{\'e}quel and Julie Cosmidis and Eric Viollier and Karim Benzerara and Planavsky, {Noah J.} and Patrick Alb{\'e}ric and Oanez Lebeau and G{\'e}rard Sarazin and Gil Michard",
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Busigny, V, Jézéquel, D, Cosmidis, J, Viollier, E, Benzerara, K, Planavsky, NJ, Albéric, P, Lebeau, O, Sarazin, G & Michard, G 2016, The iron wheel in Lac Pavin: Interaction with phosphorus cycle. in Lake Pavin: History, Geology, Biogeochemistry, and Sedimentology of a Deep Meromictic Maar Lake. Springer International Publishing, pp. 205-220. https://doi.org/10.1007/978-3-319-39961-4_12

The iron wheel in Lac Pavin : Interaction with phosphorus cycle. / Busigny, Vincent; Jézéquel, Didier; Cosmidis, Julie; Viollier, Eric; Benzerara, Karim; Planavsky, Noah J.; Albéric, Patrick; Lebeau, Oanez; Sarazin, Gérard; Michard, Gil.

Lake Pavin: History, Geology, Biogeochemistry, and Sedimentology of a Deep Meromictic Maar Lake. Springer International Publishing, 2016. p. 205-220.

Research output: Chapter in Book/Report/Conference proceedingChapter

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T1 - The iron wheel in Lac Pavin

T2 - Interaction with phosphorus cycle

AU - Busigny, Vincent

AU - Jézéquel, Didier

AU - Cosmidis, Julie

AU - Viollier, Eric

AU - Benzerara, Karim

AU - Planavsky, Noah J.

AU - Albéric, Patrick

AU - Lebeau, Oanez

AU - Sarazin, Gérard

AU - Michard, Gil

PY - 2016/1/1

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N2 - Lac Pavin is a crater lake, characterized by water column stratification, with oxygenated shallow waters lying above anoxic and ferruginous deep waters. In the deep waters, ferrous iron, Fe(II)aq, is the main dissolved cation, with concentrations up to 1 mM. Iron is efficiently confined below the oxic-anoxic boundary due to the formation of insoluble ferric iron species, Fe(III)s, by oxidation with O2 and other oxidants (e.g., NO3-, Mn(IV)). The Fe(III)s particles settle down and are reduced in the anoxic waters and at the lake bottom by reaction with organic matter to soluble Fe(II)aq. It then diffuses upward in the water column and finally is re-oxidized to Fe(III) at the redox boundary. This process, known as the “iron wheel”, is described in the present paper that reviews available data for dissolved and particulate matter in the water column, settling particles collected by sediment traps and sediment cores. Detailed analyses for some major and trace element concentrations, along with iron speciation and isotope composition, high-resolution microscopy, and geochemical modeling provide a picture of biogeochemical cycling in this Fe-rich aqueous system. At Lac Pavin the P and Fe cycles are tightly coupled. Orthophosphate is sorbed onto Fe oxyhydroxides and/or precipitated as Fe(II)-Fe(III)-phosphates at the redox interface, confining P ions in the deep anoxic waters. Deeper in the water column, particulate Fe concentrations progressively increase due to Fe(II) phosphate (vivianite) formation. In the sediment, Fe is buried as various ferrous minerals, such as vivianite, pyrite and siderite.

AB - Lac Pavin is a crater lake, characterized by water column stratification, with oxygenated shallow waters lying above anoxic and ferruginous deep waters. In the deep waters, ferrous iron, Fe(II)aq, is the main dissolved cation, with concentrations up to 1 mM. Iron is efficiently confined below the oxic-anoxic boundary due to the formation of insoluble ferric iron species, Fe(III)s, by oxidation with O2 and other oxidants (e.g., NO3-, Mn(IV)). The Fe(III)s particles settle down and are reduced in the anoxic waters and at the lake bottom by reaction with organic matter to soluble Fe(II)aq. It then diffuses upward in the water column and finally is re-oxidized to Fe(III) at the redox boundary. This process, known as the “iron wheel”, is described in the present paper that reviews available data for dissolved and particulate matter in the water column, settling particles collected by sediment traps and sediment cores. Detailed analyses for some major and trace element concentrations, along with iron speciation and isotope composition, high-resolution microscopy, and geochemical modeling provide a picture of biogeochemical cycling in this Fe-rich aqueous system. At Lac Pavin the P and Fe cycles are tightly coupled. Orthophosphate is sorbed onto Fe oxyhydroxides and/or precipitated as Fe(II)-Fe(III)-phosphates at the redox interface, confining P ions in the deep anoxic waters. Deeper in the water column, particulate Fe concentrations progressively increase due to Fe(II) phosphate (vivianite) formation. In the sediment, Fe is buried as various ferrous minerals, such as vivianite, pyrite and siderite.

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Busigny V, Jézéquel D, Cosmidis J, Viollier E, Benzerara K, Planavsky NJ et al. The iron wheel in Lac Pavin: Interaction with phosphorus cycle. In Lake Pavin: History, Geology, Biogeochemistry, and Sedimentology of a Deep Meromictic Maar Lake. Springer International Publishing. 2016. p. 205-220 https://doi.org/10.1007/978-3-319-39961-4_12