Mark A. Brzezinski

Affiliation:

University of California-Santa Barbara (UCSB-MSI)

Address:

Marine Science Institute
University of California, Santa Barbara
Santa Barbara, CA
USA 93106

ORCiD:

0000-0003-3432-2297

Activities reported for Mark A. Brzezinski:

Program coordination

None

Project coordination

Silica Cycling and the Role of Diatoms in the North Pacific Subtropical Gyre (Silica Cycling)	Lead Principal Investigator, Contact
Mechanisms controlling the production and fate of DOM during diatom blooms (SBDOM)	Co-Principal Investigator
Will high CO2 conditions affect production, partitioning and fate of organic matter? (OA - Effects of High CO2)	Co-Principal Investigator
Understanding the Role of Picocyanobacteria in the Marine Silicate Cycle (Si_in_Syn)	Co-Principal Investigator
Group-Specific Diatom Silica Production in a Coastal Upwelling System (Diatom Group Si Prod)	Co-Principal Investigator
Linking physiological and molecular aspects of diatom silicification in field populations (Diatom Silicification)	Co-Principal Investigator
GEOTRACES Pacific Section: Resolving Silicon Isotope Anomalies in the Eastern Pacific (GEOTRACES EPZT Silicon Isotope)	Principal Investigator, Contact
Collaborative Research: Diatoms, Food Webs and Carbon Export - Leveraging NASA EXPORTS to Test the Role of Diatom Physiology in the Biological Carbon Pump (Diatoms and carbon export)	Principal Investigator
GEOTRACES Arctic Section: Diagnosing the unique silicon isotope composition of the Arctic Ocean (GEOTRACES Arctic Si Isotopes)	Principal Investigator, Contact
US GEOTRACES Pacific Meridional Transect (GP-15): Resolving Silicon Isotope Anomalies in the Northeast Pacific (PMT Si)	Principal Investigator

Deployment coordination

Deployment	Synonyms	Platform	Role
KM0812	POOB2008, Pacific Open Ocean Bloom (POOB), C-MORE, Silica Cycling, North Pacific Subtropical Gyre (NPSG)	Kilo Moana	Chief Scientist
KM0919	POOB2009, Silica Cycling, North Pacific Subtropical Gyre (NPSG)	Kilo Moana	Chief Scientist
OC1504A	MUSiCC	Oceanus	Co-Chief Scientist
PS1009	SBDOM10	Point Sur	Co-Chief Scientist
PS1103	SBDOM11	Point Sur	Co-Chief Scientist

Datasets

Project: US GEOTRACES Pacific Meridional Transect (GP-15): Resolving Silicon Isotope Anomalies in the Northeast Pacific

Dataset	Version Date	Current State
Depth profiles of the isotopic composition (δ30Si) of silicon within dissolved silicic acid from samples collected on Leg 2 of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018 Principal Investigator	2024-12-18	Data not available
Depth profiles of the isotopic composition (δ30Si) of silicon within dissolved silicic acid from samples collected on Leg 1 of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018 Principal Investigator	2024-12-18	Data not available

Project: GEOTRACES Arctic Section: Diagnosing the unique silicon isotope composition of the Arctic Ocean

Dataset	Version Date	Current State
Depth profiles of the isotopic composition (d30Si) of silicon within dissolved silicic acid on the US GEOTRACES Arctic cruise GN01 (HLY1502) from August to October 2015 Principal Investigator	2020-04-17	Final no updates expected

Project: Collaborative Research: Diatoms, Food Webs and Carbon Export - Leveraging NASA EXPORTS to Test the Role of Diatom Physiology in the Biological Carbon Pump

Dataset	Version Date	Current State
Dissolved trace metal (Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb) concentrations from depth profile samples collected on the 2018 EXPORTS cruise (RR1813) to the subarctic North Pacific near Ocean Station PAPA (Station P) on R/V Roger Revelle Co-Principal Investigator	2023-07-06	Final no updates expected
Dissolved trace metal (Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb) and labile particulate elemental (P, V, Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb) concentrations from shipboard incubation experiments conducted on the 2018 EXPORTS cruise (RR1813) near Ocean Station PAPA Co-Principal Investigator	2023-06-06	Final no updates expected
Results from nutrient limitation assessments quantifying the level of Si, N, and Fe stress being experienced by phytoplankton in samples collected on EXPORTS cruise DY131 in the North Atlantic during May 2021 Principal Investigator	2023-04-06	Final no updates expected
Depth profiles in the euphotic zone of nitrate, silicate, and phosphate concentrations and profiles of silicic acid uptake rates from EXPORTS cruise DY131 in the North Atlantic during May 2021 Principal Investigator	2023-04-12	Final no updates expected
Dissolved trace metal (Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb) concentrations from surface (towfish) samples collected during the 2018 EXPORTS cruise (RR1813) to the subarctic North Pacific near Ocean Station PAPA (Station P) on R/V Roger Revelle Co-Principal Investigator	2023-06-02	Final no updates expected
32Si and 14C production data (experimental) from EXPORTS cruise RR1813 on R/V Roger Revelle in the Subarctic North Pacific near Station PAPA from August to September 2018 Principal Investigator	2020-01-06	Final no updates expected
32Si data from EXPORTS cruise RR1813 on R/V Roger Revelle in the Subarctic North Pacific near Station PAPA from August to September 2018 Principal Investigator	2020-01-03	Final no updates expected

Project: GEOTRACES Pacific Section: Resolving Silicon Isotope Anomalies in the Eastern Pacific

Dataset	Version Date	Current State
Profiles of stable isotopes of silicon in silicic acid from the US GEOTRACES EPZT cruise (R/V Thomas G. Thompson TN303) in the Eastern Tropical Pacific from October to December 2013 Principal Investigator	2018-09-11	Final no updates expected

Project: US GEOTRACES Pacific Meridional Transect (GP15)

Dataset	Version Date	Current State
Depth profiles of the isotopic composition (δ30Si) of silicon within dissolved silicic acid from samples collected on Leg 2 of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018 Principal Investigator	2024-12-18	Data not available
Depth profiles of the isotopic composition (δ30Si) of silicon within dissolved silicic acid from samples collected on Leg 1 of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018 Principal Investigator	2024-12-18	Data not available

Project: Measurement of Helium Isotopes, Tritium, Noble Gases, and Radiocarbon

Dataset	Version Date	Current State
Results from Optimum Multiparameter Water Mass Analysis (OMPA) obtained using temperature, salinity, nutrient, and oxygen data from R/V Thomas G. Thompson cruise TN303 in the Eastern Tropical Pacific from October to December 2013 Co-Principal Investigator	2017-08-17	Final no updates expected

Project: GEOTRACES Peru-Tahiti Nitrogen Isotope Measurements

Dataset	Version Date	Current State
Results from Optimum Multiparameter Water Mass Analysis (OMPA) obtained using temperature, salinity, nutrient, and oxygen data from R/V Thomas G. Thompson cruise TN303 in the Eastern Tropical Pacific from October to December 2013 Co-Principal Investigator	2017-08-17	Final no updates expected

Project: U.S. Arctic GEOTRACES Study (GN01)

Dataset	Version Date	Current State
Depth profiles of the isotopic composition (d30Si) of silicon within dissolved silicic acid on the US GEOTRACES Arctic cruise GN01 (HLY1502) from August to October 2015 Principal Investigator	2020-04-17	Final no updates expected

Project: Linking physiological and molecular aspects of diatom silicification in field populations

Dataset	Version Date	Current State
Particulate organic carbon and nitrogen measurements from CTD casts in the Monterey Bay area on RV/Point Sur cruise PS1312, June-July 2013 Co-Principal Investigator	2019-05-20	Final no updates expected
Photosynthetic data collected from the R/V Oceanus OC1504A in the Oregon/California Coastal Upwelling Zone, between 34-44N and 120-124W in 2015. Co-Principal Investigator	2016-07-28	Final no updates expected
FvFm and fluorescence lifetime data collected from the R/V Melville MV1405 along the California Coastline during 2014 Co-Principal Investigator	2016-07-21	Final no updates expected
Bacteria and virus abundance data collected from the R/V Melville MV1405 along the California coastline during 2014 Co-Principal Investigator	2016-07-21	Final no updates expected
Abundance of bacteria viruses and chlorophyll containing cells collected from the R/V Oceanus OC1504A in the Oregon/California Coastal Upwelling Zone, between 34-44N and 120-124W during 2015 Co-Principal Investigator	2016-07-20	Final no updates expected
CTD data from collected from the R/V Oceanus OC1504A along the Oregon/California Coastal Upwelling Zone, between 34-44N and 120-124W during 2015 Co-Principal Investigator	2016-07-18	Final no updates expected
Nutrients, pigments, silicate and experimental data collected aboard the OCEANUS during cruise OC1504A in the North Pacific Ocean from 2015-04-19 to 2015-05-06 Principal Investigator	2016-07-12	Final no updates expected
Experimental biogeochemical data from R/V Melville MV1405 collected along the California coastline in 2014 Principal Investigator	2015-08-20	Final no updates expected
Event log from the R/V Oceanus OC1504A, a cruise along the Oregon/California Coastal Upwelling Zone, between 34-44N and 120-124W during 2015 Co-Chief Scientist	2016-07-13	Final no updates expected

Project: Group-Specific Diatom Silica Production in a Coastal Upwelling System

Dataset	Version Date	Current State
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) Scientist	2018-03-12	Final with updates expected
Silicon uptake rates from samples collected during the R/V Point Sur cruise PS1312 along the Central California coast from June to July of 2013 (Diatom Group Si Prod project) Scientist	2018-03-12	Final with updates expected
Underway Data Acquisition System (UDAS) data from R/V Point Sur cruise PS1312 along the Central California coast from June to July of 2013 (Diatom Group Si Prod project) Scientist	2017-08-29	Final no updates expected
CTD bottle data from R/V Point Sur cruise PS1312 off the Central California Coast from June to July of 2013 (Diatom Group Si Prod project) Scientist	2017-08-16	Final no updates expected
CTD profiles from R/V Point Sur cruise PS1312 off the Central California Coast from June to July of 2013 (Diatom Group Si Prod project) Scientist	2017-08-30	Final no updates expected

Project: Understanding the Role of Picocyanobacteria in the Marine Silicate Cycle

Dataset	Version Date	Current State
Silica uptake by Synechococcus cells in response to a gradient of silicic acid concentrations from lab experiments at Dauphin Island Sea Lab and University of Santa Barbara between 2012-2015 (Si_in_Syn project) Co-Principal Investigator	2017-12-04	Final no updates expected
Synechococcus silica uptake rates from cultures with and without added orthophospate from laboratory experiments at the Dauphin Island Sea Lab from August of 2013 to September of 2014 (Si_in_Syn project) Co-Principal Investigator	2017-12-04	Final no updates expected
Synechococcus cell silica uptake from cultures with added nutrients from laboratory experiments at the Dauphin Island Sea Lab between 2013 and 2015 (Si_in_Syn project) Co-Principal Investigator	2017-12-04	Final no updates expected
Growth rate of Synechococcus cells grown in different silicic acid concentrations from laboratory experiments at the Dauphin Island Sea Lab between 2013 and 2015 (Si_in_Syn project) Co-Principal Investigator	2017-12-04	Final no updates expected
Synechococcus silica quotas from cultures with various Si:P mole ratios from laboratory experiments at the Dauphin Island Sea Lab from June to August of 2015 (Si_in_Syn project) Co-Principal Investigator	2017-12-04	Final no updates expected
Si quotas of Synechococcus cells grown in different silicic acid concentrations from laboratory experiments at the Dauphin Island Sea Lab between 2013 and 2015 (Si_in_Syn project) Co-Principal Investigator	2017-12-04	Final no updates expected
Water-soluble fraction of silica in Synechococcus cells grown in different silicic acid concentrations from laboratory experiments at the Dauphin Island Sea Lab between 2013-2015 (Si_in_Syn project) Co-Principal Investigator	2017-12-04	Final no updates expected
Silica quotas of Synechococcus cells cultured under varying light conditions from laboratory experiments at the Dauphin Island Sea Lab in 2014 (Si_in_Syn project) Co-Principal Investigator	2017-12-04	Final no updates expected
Water column particulate silica, standing stocks, and productivity rates from R/V Atlantic Explorer cruises AE1218, AE1228, AE1319, AE1322 in Bermuda, and NW Atlantic from 2012-2013 (Si_in_Syn project) Co-Principal Investigator	2016-01-05	Final no updates expected

Project: U.S. GEOTRACES East Pacific Zonal Transect (GP16)

Dataset	Version Date	Current State
Profiles of stable isotopes of silicon in silicic acid from the US GEOTRACES EPZT cruise (R/V Thomas G. Thompson TN303) in the Eastern Tropical Pacific from October to December 2013 Principal Investigator	2018-09-11	Final no updates expected
Results from Optimum Multiparameter Water Mass Analysis (OMPA) obtained using temperature, salinity, nutrient, and oxygen data from R/V Thomas G. Thompson cruise TN303 in the Eastern Tropical Pacific from October to December 2013 Co-Principal Investigator	2017-08-17	Final no updates expected

Project: Will high CO2 conditions affect production, partitioning and fate of organic matter?

Dataset	Version Date	Current State
3A: Removal of organic carbon by natural bacterioplankton communities as a function of pCO2 from laboratory experiments between 2012 and 2016 Co-Principal Investigator	2016-12-05	Final no updates expected
2B: Bioavailability of dissolved organic carbon produced by Dactyliosolen fragilissimus grown under different pCO2 and temperature condition from UCSB Marine Science Institute Passow Lab from 2009 to 2010 (OA - Effects of High CO2 project) Co-Principal Investigator	2013-11-21	Final no updates expected
1B: Bioavailability of dissolved organic carbon produced by Thalassiosira weissflogii grown under different pCO2 and temperature conditions from UCSB Marine Science Institute Passow Lab from 2009 to 2010 (OA - Effects of High CO2 project) Co-Principal Investigator	2013-11-21	Final no updates expected
2A: Partitioning of carbon as a function of pCO2 and temperature during growth of Dactyliosolen fragilissimus from U.C. Santa Barbara Marine Science Institute Passow Lab from 2009 to 2010 (OA - Effects of High CO2 project) Co-Principal Investigator	2013-09-19	Final no updates expected
1A: Partitioning of carbon as a function of pCO2 and temperature during growth of Thalassiosira weissflogii from UCSB Marine Science Institute Passow Lab from 2009 to 2010 (OA - Effects of High CO2 project) Co-Principal Investigator	2013-09-19	Final no updates expected

Project: Santa Barbara Coastal Long Term Ecological Research site

Dataset	Version Date	Current State
Experimental results: Remineralization experiments to assess the ability of natural assemblages of bacteria to utilize DOM produced under Si and N limitation (SBDOM project, SBC LTER project) Co-Principal Investigator	2014-07-09	Final no updates expected
Experimental results: Bloom in Bottle (BIB) experiments: culture studies of the effect of Si and N stress on diatoms of the Santa Barbara Channel (SBDOM project, SBC LTER) Co-Principal Investigator	2014-07-09	Final no updates expected
Experimental and survey biogeochemical and microbial data from R/V Point Sur cruises PS1009 and PS1103 in the Santa Barbara Channel from 2010-2011 (SBDOM project, SBC LTER project) Co-Principal Investigator	2014-07-08	Final no updates expected
Log of sampling events from R/V Point Sur cruises PS1009 and PS1103 in the Santa Barbara Channel from 2010-2011 (SBDOM project, SBC LTER project) Co-Chief Scientist	2014-07-07	Final no updates expected

Project: Mechanisms controlling the production and fate of DOM during diatom blooms

Dataset	Version Date	Current State
Dilution batch-culture bioassay (remineralization) experiments from SBDOM11 project cruise from R/V Point Sur PS1103 in the Santa Barbara Channel, May 2011 (SBDOM project, SBC LTER project) Co-Principal Investigator	2017-10-30	Final no updates expected
Experimental results: Remineralization experiments to assess the ability of natural assemblages of bacteria to utilize DOM produced under Si and N limitation (SBDOM project, SBC LTER project) Co-Principal Investigator	2014-07-09	Final no updates expected
Experimental results: Bloom in Bottle (BIB) experiments: culture studies of the effect of Si and N stress on diatoms of the Santa Barbara Channel (SBDOM project, SBC LTER) Co-Principal Investigator	2014-07-09	Final no updates expected
Experimental and survey biogeochemical and microbial data from R/V Point Sur cruises PS1009 and PS1103 in the Santa Barbara Channel from 2010-2011 (SBDOM project, SBC LTER project) Co-Principal Investigator	2014-07-08	Final no updates expected
Log of sampling events from R/V Point Sur cruises PS1009 and PS1103 in the Santa Barbara Channel from 2010-2011 (SBDOM project, SBC LTER project) Co-Chief Scientist	2014-07-07	Final no updates expected

Project: Silica Cycling and the Role of Diatoms in the North Pacific Subtropical Gyre

Dataset	Version Date	Current State
Experimental and biogeochemical surveys from R/V Kilo Moana, R/V Knorr, and R/V Ka`imikai-O-Kanaloa cruises in the North Pacific Subtropical Gyre and Hawaiian Islands: stations Kahe, ALOHA, Kena and WHOTS Mooring from 2008 to 2009 Principal Investigator, Contact	2013-03-01	Preliminary and in progress
Hawaii Ocean Timeseries (HOT) sampling station locations from multiple cruises on the R/V Kilo Moana, R/V Knorr, and R/V Ka`imikai-O-Kanaloa, in the Hawaiian Islands: stations Kahe, ALOHA, Kena and WHOTS Mooring from 2008-2009 (Silica Cycling project) Principal Investigator, Contact	2013-02-27	Final no updates expected
One minute cruise tracks from KM0919, KM0920, and KN195-07 in the North Pacific Subtropical Gyre, Hawaiian Islands - Stations Kahe, ALOHA, Kena and WHOTS Mooring in 2009 (Silica Cycling project) Principal Investigator, Contact	2013-02-28	Final no updates expected
Event Logs from R/V Kilo Moana KM0812, KM0919 in the North Pacific Subtropical Gyre north of Hawaii from 2008-2009 (C-MORE project, Silica Cycling project) Principal Investigator, Contact	2013-02-12	Final no updates expected
KM0812 cruise track from Event Log Stations from R/V Kilo Moana KM0812 in the North Pacific Subtropical Gyre north of Hawaii, near (30 N, 140 W) from July 2008 (C-MORE project, Silica Cycling project) Principal Investigator, Contact	2013-02-12	Preliminary and in progress

Project: Center for Microbial Oceanography: Research and Education

Dataset	Version Date	Current State
Event Logs from R/V Kilo Moana KM0812, KM0919 in the North Pacific Subtropical Gyre north of Hawaii from 2008-2009 (C-MORE project, Silica Cycling project) Principal Investigator, Contact	2013-02-12	Final no updates expected
KM0812 cruise track from Event Log Stations from R/V Kilo Moana KM0812 in the North Pacific Subtropical Gyre north of Hawaii, near (30 N, 140 W) from July 2008 (C-MORE project, Silica Cycling project) Principal Investigator, Contact	2013-02-12	Preliminary and in progress

Project: U.S. GEOTRACES North Atlantic Transect (GA03)

Dataset	Version Date	Current State
Profiles of stable isotopes of silicon (Si) in silicic acid (Si(OH)4) from R/V Knorr cruises KN199-04, KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) Principal Investigator	2013-11-04	Final no updates expected

Project: U.S. JGOFS Synthesis and Modeling

Dataset	Version Date	Current State
Flexible-composition biogeochemical model results for BATS and the Southern Ocean (KERFIX), 2005 (U.S. JGOFS Synthesis & Modeling Phase project results) Co-Principal Investigator	2005-10-06	Final no updates expected

Project: Southern Ocean Iron Experiment

Dataset	Version Date	Current State
SOFeX Melville cruise sampling event log from R/V Melville cruise COOK19MV from the Southern Ocean in 2002 (SOFeX project) Principal Investigator	2007-01-30	Final no updates expected

Project: U.S. JGOFS Antarctic Environment and Southern Ocean Process Study

Dataset	Version Date	Current State
Biogenic silica production rates and dissolution rates from R/V Roger Revelle KIWI6, KIWI7, KIWI8, KIWI9 cruises in the Southern Ocean, 1998 (U.S. JGOFS AESOPS project) Co-Principal Investigator	2002-04-04	Final no updates expected

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Mark A. Brzezinski

Activities reported for Mark A. Brzezinski: