Dataset: Silica production rates and concentrations quantified using 32Si and PDMPO using samples from the R/V Point Sur cruise PS1312 along the Central California coast from June to July of 2013 (Diatom Group Si Prod project)

Release Date:2018-03-06Final with updates expectedVersion (2018-03-12)Dataset Type:Cruise Results

Principal Investigator: Jeffrey W. Krause (Dauphin Island Sea Lab)

Scientist: Mark A. Brzezinski (University of California-Santa Barbara)

BCO-DMO Data Manager: Amber D. York (Woods Hole Oceanographic Institution)


Project: Group-Specific Diatom Silica Production in a Coastal Upwelling System (Diatom Group Si Prod)

This dataset includes diatom silica production rates, and concentrations quantified using 32Si and PDMPO (see below) tracers. Gross and biomass-normalized silica measurements from 12 hour and 24 hour incubations are provided as well as concentrations of phosphate, nitrate+nitritie, total chlorophyll, chlorophyll a, phaeopigments, and CTD measurements (e.g. temperature, salinity).

PDMPO = 2-(4-pyridyl)-5-((4-(2-dimethylaminoethylaminocarbamoyl)methoxy)phenyl)oxazole


Related Datasets

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Related Publications

General

Krause, J. W., Brzezinski, M. A., & Jones, J. L. (2011). Application of low-level beta counting of 32Si for the measurement of silica production rates in aquatic environments. Marine Chemistry, 127(1-4), 40–47. doi:10.1016/j.marchem.2011.07.001
General

Krause, J. W., Brzezinski, M. A., Villareal, T. A., & Wilson, C. (2012). Increased kinetic efficiency for silicic acid uptake as a driver of summer diatom blooms in the North Pacific subtropical gyre. Limnology and Oceanography, 57(4), 1084–1098. doi:10.4319/lo.2012.57.4.1084
Methods

Brzezinski, M. A., & Washburn, L. (2011). Phytoplankton primary productivity in the Santa Barbara Channel: Effects of wind-driven upwelling and mesoscale eddies. Journal of Geophysical Research, 116(C12). doi:10.1029/2011jc007397
Methods

Krause, J. W., Nelson, D. M., & Lomas, M. W. (2009). Biogeochemical responses to late-winter storms in the Sargasso Sea, II: Increased rates of biogenic silica production and export. Deep Sea Research Part I: Oceanographic Research Papers, 56(6), 861–874. doi:10.1016/j.dsr.2009.01.002
Methods

McNair, H. M., Brzezinski, M. A., & Krause, J. W. (2015). Quantifying diatom silicification with the fluorescent dye, PDMPO. Limnology and Oceanography: Methods, 13(10), 587–599. doi:10.1002/lom3.10049