Vivianite is a major sink for phosphorus in methanogenic coastal surface sediments

Egger, Matthias; Jilbert, Tom; Behrends, Thilo; Rivard, Camille; Slomp, Caroline P.

doi:10.1016/j.gca.2015.09.012

Cited by 167 publications

(164 citation statements)

References 55 publications

Supporting

Mentioning

150

Contrasting

Order By: Relevance

“…In sediments of brackish/marine basins, an excess supply of reactive Fe-oxides may also act as a key driver of vivianite formation (Jilbert and Slomp 2013;Dijkstra et al 2016;Reed et al 2016). In addition to vivianite formed near the sediment-water interface, vivianite can also form diagenetically in brackish/marine basins below the sedimentary sulfate/methane transition zone (SMTZ) when porewater Fe 2+ accumulates in the absence of HS − and meets porewater PO 4 (März et al 2008;Hsu et al 2014;Egger et al 2015a). Major shifts in water column conditions can also affect P diagenesis in the subsurface by creating distinct geochemical gradients.…”

Section: Communicated By David Reide Corbettmentioning

confidence: 99%

“…Moreover, enhanced input of organic matter may result in an upward shift of the SMTZ within the sediment (Egger et al 2015b). This, in turn, results in an upward shift of the zone below the SMTZ where vivianite formation can be favorable due to the abundant presence of porewater Fe 2+ (Egger et al 2015a). Most studies on the relationship between variations in bottom water salinity and redox conditions and P burial focus on surface sediments along a salinity and/or redox transect (e.g., Hartzell et al 2009;Mort et al 2010;Dijkstra et al 2014;Oxmann and Schwendenmann 2015).…”

Section: Communicated By David Reide Corbettmentioning

confidence: 99%

See 1 more Smart Citation

Holocene Refreshening and Reoxygenation of a Bothnian Sea Estuary Led to Enhanced Phosphorus Burial

Dijkstra

Krupinski

Yamane

et al. 2017

Estuaries and Coasts

Self Cite

View full text Add to dashboard Cite

Salinity variations in restricted basins like the Baltic Sea can alter their vulnerability to hypoxia (i.e., bottom water oxygen concentrations <2 mg/l) and can affect the burial of phosphorus (P), a key nutrient for marine organisms. We combine porewater and solid-phase geochemistry, microanalysis of sieved sediments (including XRD and synchrotron-based XAS), and foraminiferal δ 18 O and δ 13 C analyses to reconstruct the bottom water salinity, redox conditions, and P burial in the Ångermanälven estuary, Bothnian Sea. Our sediment records were retrieved during the Integrated Ocean Drilling Program (IODP) Baltic Sea Paleoenvironment Expedition 347 in 2013. We demonstrate that bottom waters in the Ångermanälven estuary became anoxic upon the intrusion of seawater in the early Holocene, like in the central Bothnian Sea. The subsequent refreshening and reoxygenation, which was caused by gradual isostatic uplift, promoted P burial in the sediment in the form of Mn-rich vivianite. Vivianite authigenesis in the surface sediments of the more isolated part of the estuary ultimately ceased, likely due to continued refreshening and an associated decline in productivity and P supply to the sediment. The observed shifts in environmental conditions also created conditions for postdepositional formation of authigenic vivianite, and possibly apatite formation, at ∼8 m composite depth. These salinityrelated changes in redox conditions and P burial are highly relevant in light of current climate change. The results specifically highlight that increased freshwater input linked to global warming may enhance coastal P retention, thereby contributing to oligotrophication in both coastal and adjacent open waters.

show abstract

Section: Communicated By David Reide Corbettmentioning

confidence: 99%

Section: Communicated By David Reide Corbettmentioning

confidence: 99%

Holocene Refreshening and Reoxygenation of a Bothnian Sea Estuary Led to Enhanced Phosphorus Burial

Dijkstra

Krupinski

Yamane

et al. 2017

Estuaries and Coasts

Self Cite

View full text Add to dashboard Cite

show abstract

“…This has been attributed to binding of P to Fe-(oxyhydr)oxides, which is supported by the presence of a large stock of Fe-bound P in the surface sediment (Sulu-Gambari et al 2016a). In this latter study, however, the stock of Fe-bound P was determined with an operational SEDEX extraction (Ruttenberg 1992) that can also extract vivianite (Dijkstra et al 2014;Dijkstra et al 2016;Egger et al 2015). Thus, a role for vivianite besides P bound to Fe-(oxyhydr)oxides cannot, at present, be excluded.…”

Section: Introductionmentioning

confidence: 85%

“…Merging and normalisation of spectra was performed with the Athena data analysis package (Ravel and Newville 2005). For comparison, reference spectra for a suite of P minerals were obtained from Dijkstra et al (2016) and Egger et al (2015) and supplemented with adsorbed-P spectra, taken from the ID21beamline P-XANES spectra database at the ESRF (ID21 P-XANES database).…”

Section: Sediment and Suspended Matter Analysesmentioning

confidence: 99%

“…With the onset of bottom-water hypoxia, P bound to Fe-(oxyhydr)oxides and in polyphosphates is generally remobilised and released to the overlying water, where it can support primary productivity and contribute to the further development of hypoxia (Ingall et al 1993;Ruttenberg 2003). Some of the phosphate released to the pore water can also precipitate in the form of authigenic P minerals such as the calcium (Ca)-P mineral carbonate fluorapatite (Ruttenberg and Berner 1993;Slomp et al 1996) and vivianite, an Fe(II)-P mineral (Egger et al 2015;Jilbert and Slomp 2013;Martens et al 1978;März et al 2008). The factors controlling the formation of such authigenic minerals, which can act as a key sink for P in sediments of seasonally hypoxic basins, are still incompletely understood.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phosphorus Cycling and Burial in Sediments of a Seasonally Hypoxic Marine Basin

Sulu-Gambari

Hagens

Behrends

et al. 2017

Estuaries and Coasts

Self Cite

View full text Add to dashboard Cite

Recycling of phosphorus (P) from sediments contributes to the development of bottom-water hypoxia in many coastal systems. Here, we present results of a year-long assessment of P dynamics in sediments of a seasonally hypoxic coastal marine basin (Lake Grevelingen, the Netherlands) in 2012. Sequential phosphorus extractions (SEDEX) and X-ray absorption spectroscopy (XAS) indicate that P was adsorbed to Fe-(III)-(oxyhydr)oxides when cable bacteria were active in the surface sediments in spring. With the onset of summer h y p o x i a , s u l p h i d e -i n d u c e d d i s s o l u t i o n o f t h e Fe-(III)-(oxyhydr)oxides led to P release to the pore water and overlying water. The similarity in authigenic Ca-P concentrations in the sediment and suspended matter suggest that Ca-P is not formed in situ. The P burial efficiency was ≤ 32%. Hypoxia-driven sedimentary P recycling had a major impact on the water-column chemistry in the basin in 2012. Watercolumn monitoring data indicate up to ninefold higher surface water concentrations of phosphate in the basin in the late 1970s and a stronger hypoxia-driven seasonal P release from the sediment. The amplified release of P from the sediment in the past is attributed to the presence of a larger pool of Febound P in the basin prior to the first onset of hypoxia. Given that P is not limiting, primary production in the basin has not been affected by the decadal changes in P availability and recycling over the past 40 years. The changes in P dynamics on decadal time scales were not recorded in sediment profiles of total P or organic C/total P.

show abstract

Sulfur and iron diagenesis in temperate unsteady sediments of the East China Sea inner shelf and a comparison with tropical mobile mud belts (MMBs)

et al. 2016

View full text Add to dashboard Cite

Redox cycling of iron (Fe) and sulfur (S) exerts profound influences on fates of numerous elements in coastal marine sediments. In this study, S and Fe cycling and its geochemical expressions in the East China Sea (ECS) inner shelf, a representative of temperate mobile mud belts (MMBs), were characterized and compared with tropical counterparts (the Amazon shelf and the Gulf of Papua). Fe and S speciation consistently points to the dominance of authigenic nonsulfidized Fe(II) phases (i.e., poorly crystalline clays (PCCs) and carbonates) and the prevalence of Fe redox cycling in the suboxic or weakly sulfidic regimes of the ECS‐MMBs. High contents of authigenic magnetite may be a common diagenetic expression in all MMBs. Compared to the tropical MMBs, three main differences of diagenetic expressions in the ECS‐MMBs are (i) light 34Spyrite in the ECS‐MMB versus characteristically heavy 34Spyrite in the Amazon shelf MMBs; (ii) lower total reactive Fe (FeTR), total diagenetic Fe(II), and ratio of FeTR to total Fe in the ECS‐MMBs; and (iii) Fe(II) carbonates and PCCs are equally important sinks for nonsulfidized Fe(II) in the ECS‐MMBs, whereas PCCs are the predominant sink in the tropical counterparts. These differences are ascribable to factors including low degradability of organic matter, small diffusion scales, less intense chemical weathering in the drainage basin, and/or weaker reverse weathering in the ECS‐MMBs. Despite the differences above, Fe and S diagenetic expressions that characterize the prevalence of Fe redox cycling in the unsteady suboxic regimes are shared by the ECS‐MMBs and tropical MMBs.

show abstract

Vivianite is a major sink for phosphorus in methanogenic coastal surface sediments

Cited by 167 publications

References 55 publications

Holocene Refreshening and Reoxygenation of a Bothnian Sea Estuary Led to Enhanced Phosphorus Burial

Holocene Refreshening and Reoxygenation of a Bothnian Sea Estuary Led to Enhanced Phosphorus Burial

Phosphorus Cycling and Burial in Sediments of a Seasonally Hypoxic Marine Basin

Sulfur and iron diagenesis in temperate unsteady sediments of the East China Sea inner shelf and a comparison with tropical mobile mud belts (MMBs)

Contact Info

Product

Resources

About