Accelerated biogenic silica dissolution by marine invertebrate digestion: in comparison with phosphorus and iron

2022 ◽  
Author(s):  
Ying Wang ◽  
Shaoping Kuang ◽  
Guangtao Zhang
Keyword(s):  
Biogenic Silica ◽  
Marine Invertebrate ◽  
Silica Dissolution

Dynamics of biogenic silica dissolution in Jiaozhou Bay, western Yellow Sea

2015 ◽  
Vol 174 ◽  
pp. 58-66 ◽  
Author(s):  
Bin Wu ◽  
Chao Lu ◽  
SuMei Liu
Keyword(s):  
Yellow Sea ◽  
Biogenic Silica ◽  
Jiaozhou Bay ◽  
Silica Dissolution ◽  
Western Yellow Sea

Constraining biogenic silica dissolution in marine sediments: A comparison between diagenetic models and experimental dissolution rates

2007 ◽  
Vol 106 (1-2) ◽  
pp. 223-238 ◽  
Author(s):  
K. Khalil ◽  
C. Rabouille ◽  
M. Gallinari ◽  
K. Soetaert ◽  
D.J. DeMaster ◽  
...  
Keyword(s):  
Marine Sediments ◽  
Biogenic Silica ◽  
Dissolution Rates ◽  
Silica Dissolution

scholarly journals Bacterial and fungal colonization and decomposition of submerged plant litter: consequences for biogenic silica dissolution

2016 ◽  
Vol 92 (3) ◽  
pp. fiw011 ◽  
Author(s):  
Hanna Alfredsson ◽  
Wim Clymans ◽  
Johanna Stadmark ◽  
Daniel Conley ◽  
Johannes Rousk
Keyword(s):  
Biogenic Silica ◽  
Plant Litter ◽  
Fungal Colonization ◽  
Submerged Plant ◽  
Silica Dissolution

Biogenic silica dissolution in sediments of the Southern Ocean. II. Kinetics

1997 ◽  
Vol 44 (5) ◽  
pp. 1129-1149 ◽  
Author(s):  
Philippe Van Cappellen ◽  
Linqing Qiu
Keyword(s):  
Southern Ocean ◽  
Biogenic Silica ◽  
Silica Dissolution

scholarly journals Evidence for reduced biogenic silica dissolution rates in diatom aggregates

2007 ◽  
Vol 333 ◽  
pp. 129-142 ◽  
Author(s):  
B Moriceau ◽  
M Garvey ◽  
O Ragueneau ◽  
U Passow
Keyword(s):  
Biogenic Silica ◽  
Dissolution Rates ◽  
Silica Dissolution

scholarly journals Bottom-water temperature controls on biogenic silica dissolution and recycling in surficial deep-sea sediments

2020 ◽  
Author(s):  
Shahab Varkouhi ◽  
Jonathan Wells
Keyword(s):  
Silicic Acid ◽  
Biogenic Silica ◽  
Bottom Water ◽  
Benthic Flux ◽  
Dissolution Rates ◽  
Bottom Water Temperature ◽  
Biogenic Opal ◽  
Silica Dissolution ◽  
Sediment Types ◽  
Clay Formation

Abstract. This study calculated the dissolution rates of biogenic silica deposited on the seafloor and the silicic acid benthic flux for 22 Ocean Drilling Program sites. Simple models developed for two host sediment types – detrital and carbonate – were used to explain the variability of biogenic opal dissolution and recycling under present-day low (−0.3 to 2.14 °C) bottom-water temperatures. The kinetic constants describing silicic acid release and silica saturation concentration increased systematically with increasing bottom-water temperatures. When these temperature effects were incorporated into the diagenetic models, the prediction of dissolution rates and diffusive fluxes was more robust. This demonstrates that temperature acts as a primary control that decreases the relative degree of pore-water saturation with opal while increasing the silica concentration. The correlation between the dissolution rate and benthic flux with temperature was pronounced at sites where biogenic opal is accommodated in surficial sediments mostly comprised of biogenic carbonates. This is because the dissolution of carbonates provides the alkalinity necessary for both silica dissolution and clay formation; thus strongly reducing the retarding influence of clays on opal dissolution. Conversely, the silica exchange rates were modified by presence of aluminosilicates, which led to a higher burial efficiency for opal in detrital- than in carbonate-dominated benthic layers. Though model prediction of first-order silica early transformation suggests likely effects from surface temperatures (0–4 °C) on opal-CT precipitation over short geological times (

Biogenic silica dissolution in sediments of the Southern Ocean. I. Solubility

1997 ◽  
Vol 44 (5) ◽  
pp. 1109-1128 ◽  
Author(s):  
Philippe Van Cappellen ◽  
Linqing Qiu
Keyword(s):  
Southern Ocean ◽  
Biogenic Silica ◽  
Silica Dissolution

Quantification of the Biogenic Silica Dissolution in Southern Ocean Sediments

1992 ◽  
Vol 37 (3) ◽  
pp. 361-378 ◽  
Author(s):  
Jean-Jacques Pichon ◽  
Gilles Bareille ◽  
Monique Labracherie ◽  
Laurent D. Labeyrie ◽  
Annick Baudrimont ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Biogenic Silica ◽  
Recent Sediment ◽  
Diatom Species ◽  
Data Set ◽  
Silica Dissolution ◽  
Species Abundances ◽  
Superficial Sediments ◽  
The Relationship ◽  
S Application

AbstractA transfer function has been established to quantify the dissolution of diatom silica in Southern Ocean sediments. The relationship between the amount of silica dissolution and changes in diatom species distribution is built by controlled progressive dissolution of biogenic silica in five recent sediment samples from box-core tops, each representative of a modern diatom species sediment assemblage. The amount of dissolved silica was measured for each experiment. The resulting data set of species abundances (42 samples containing 32 diatom species and 2 silicoflagellate genera) was added to the modern data base of diatom species distributed over the Southern Ocean (124 core tops). Q-mode factor analysis individualizes four factors explaining 83% of the variance. The first three factors are controlled by surface water properties (mostly temperature). The fourth factor is the only one correlated with loss of silica in the reference samples (R = 0.900). We quantified the dissolution factor using this correlation: superficial sediments of the Southeast Indian Ocean are characterized, from low to high latitudes, by a decrease in silica loss by dissolution (from >50 to 10%) from the Subantarctic Zone (40°S) to around 55°S, followed by an increase of silica loss to values larger than 60% between 63° and 68°S. Application of the dissolution factor in two cores from the Southern Ocean (≈44° and 55°S) shows enhanced opal dissolution during the last glaciation, particularly during Emiliani's stage 3 (from 40,000 to 30,000 yr B.P.).

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