Jonathan P. Zehr

Affiliation:

University of California-Santa Cruz (UCSC)

Address:

E&MS A438, Ocean Sciences Department
1156 High Street
Santa Cruz, CA
USA 95064

ORCiD:

0000-0002-5691-5408

Activities reported for Jonathan P. Zehr:

Program coordination

None

Project coordination

Center for Microbial Oceanography: Research and Education (C-MORE)	Co-Principal Investigator
Biology and Ecology of Newly Discovered Diazotrophs in the Open Ocean (DIAZOTROPHS)	Principal Investigator
Oligotrophic phytoplankton community response to changes in N substrates and the resulting impact on genetic, taxonomic and functional diversity (PhytoNsubResponse)	Lead Principal Investigator
Significance of metabolic interactions of diatom-diazotrophic associations (DDAs) for ocean ecosystems (DDA Metabolic Interactions)	Co-Principal Investigator
Simons Collaboration on Ocean Processes and Ecology (SCOPE)	Co-Principal Investigator
Collaborative Research: Biogeochemical significance of the abundant, uncultivated symbiotic cyanobacteria UCYN-A (BSUCS)	Principal Investigator, Contact

Deployment coordination

Deployment	Synonyms	Platform	Role
KM0703	SPEEDO, SPAK	Kilo Moana	Chief Scientist
SJ0609		Seward Johnson	Chief Scientist

Datasets

Project: Collaborative Research: Biogeochemical significance of the abundant, uncultivated symbiotic cyanobacteria UCYN-A

Dataset	Version Date	Current State
Single cell N2 fixation measurements from UCYN-A symbiosis in the Southern California Current System from May 2017 (SP1714) and October (SP1724) SCCS cruises. Principal Investigator	2024-06-24	Final no updates expected
Bulk N2 fixation measurements from UCYN-A symbiosis in the Southern California Current System from May 2017 (SP1714) and October (SP1724) SCCS cruises. Principal Investigator	2024-06-24	Final no updates expected
Hydrological, biogeochemcial and N2-fixer qPCR-derived abundance data for May 2017 (SP1714) and October (SP1724) SCCS cruises. Principal Investigator	2024-06-24	Final no updates expected
Experimental data testing the N2 and CO2 fixing activity of the UCYN-A/haptophyte symbiosis in nitrate and ammonium rich waters in the California Current from May to October 2017 Co-Principal Investigator	2023-11-29	Final no updates expected
CTD sensor data from two cruises from R/V Robert Gordon Sproul SP1714 in the California Current waters off the coast of Southern California and Baja California from 2017-2018 Co-Principal Investigator	2023-11-29	Final no updates expected

Project: Oligotrophic phytoplankton community response to changes in N substrates and the resulting impact on genetic, taxonomic and functional diversity

Dataset	Version Date	Current State
Phytoplankton MicroTOOLs microarray-based metatranscriptomes collected from a nutrient amendment experiment conducted during R/V New Horizon Cruise NH1417 in the California Current System from 2014-08-23 to 2014-08-26 Principal Investigator	2019-07-18	Final no updates expected
Photosynthetic picoplankton abundances from samples collected during Hawaii Ocean Time-series (HOT) cruises from 2011-2013 (PhytoNsubResponse project) Co-Principal Investigator		Preliminary and in progress
Phytoplankton pigments from samples collected during Hawaii Ocean Time-series (HOT) cruises from 2011-2013 (PhytoNsubResponse project) Co-Principal Investigator		Preliminary and in progress
Size-fractioned primary production (14C-bicarbonate assimilation rates) from samples collected during Hawaii Ocean Time-series (HOT) cruises from 2011-2013 (PhytoNsubResponse project) Co-Principal Investigator		Preliminary and in progress
Measurements of inorganic nutrients (nitrate+nitrite, phosphate, silicate, and ammonium) from samples collected during Hawaii Ocean Time-series (HOT) cruises from 2011-2013 (PhytoNsubResponse project) Co-Principal Investigator		Preliminary and in progress
18S rRNA gene sequence from the euphotic zone at Station ALOHA from near-monthly samples collected during Hawaii Ocean Time-series (HOT) program cruises 230-252 between 2011 and 2013 (PhytoNsubResponse project) Co-Principal Investigator	2017-08-25	Final no updates expected
Size fractionated and group-specific rates of 14C-primary production by Prochlorococcus, Synechococcus, and photosynthetic picoeukaryotes from samples collected during Hawaii Ocean Time-series (HOT) program cruises 230-252 between 2012 and 2013 Co-Principal Investigator	2017-08-25	Final no updates expected
Niskin bottle sample data from R/V New Horizon NEMO cruise NH1417 in the Eastern Pacific between San Diego and Hawaii from August to September 2014 (Phyto response to N substrates project) Co-Principal Investigator	2018-03-09	Preliminary and in progress
CTD profile downcasts from R/V New Horizon NEMO cruise NH1417 in the Eastern Pacific between San Diego and Hawaii from August to September 2014 (Phyto response to N substrates project) Co-Principal Investigator	2017-03-23	Preliminary and in progress
Cruise tracks from R/V New Horizon NH1417 in the Eastern Pacific between San Diego and Hawaii in 2014 (Phyto response to N substrates project) Lead Principal Investigator	2016-01-11	Final no updates expected

Project: Center for Microbial Oceanography: Research and Education

Dataset	Version Date	Current State
Diazotroph abundances (nifH gene) from multiple HOE-DYLAN cruises from July to September 2012 (C-MORE project) Principal Investigator	2023-08-15	Final no updates expected
qPCR FCM from R/V Kilo Moana KM0715 in the North Pacific Subtropical Gyre north of Hawaii, near (24 N, 159.0 W) from August 2007 (C-MORE project) Principal Investigator	2009-09-30	Preliminary and in progress

Project: Biology and Ecology of Newly Discovered Diazotrophs in the Open Ocean

Dataset	Version Date	Current State
Abundance and distribution of diazotrophs determined via qPCR from R/V Kilo Moana KM0703, R/V Seward Johnson SJ0609 in the tropical and subtropical SW Pacific and tropical N Atlantic from 2006-2007 (DIAZOTROPHS project) Principal Investigator	2010-10-21	Final no updates expected
CTD Station Locations from R/V Kilo Moana, R/V Seward Johnson KM0703, SJ0609 in the tropical and subtropical Southwest Pacific, and tropical North Atlantic from 2006-2007 (DIAZOTROPHS project) Principal Investigator	2009-11-16	Final no updates expected
CTD Bottle Data from R/V Kilo Moana, R/V Seward Johnson KM0703, SJ0609 in the tropical and subtropical Southwest Pacific, and tropical North Atlantic from 2006-2007 (DIAZOTROPHS project) Principal Investigator	2009-11-12	Final no updates expected
CTD Profiles from R/V Kilo Moana, R/V Seward Johnson KM0703, SJ0609 in the tropical and subtropical Southwest Pacific, and tropical North Atlantic from 2006-2007 (DIAZOTROPHS project) Principal Investigator	2009-11-12	Final no updates expected

Project: Biocomplexity of Aquatic Microbial Systems

Dataset	Version Date	Current State
Nutrients and Pigments from R/V Cape Henlopen BAMS-multi in the Chesapeake Bay from 2000-2004 (BAMS project) Co-Principal Investigator	2008-11-19	Final no updates expected
Bacterial Productivity and Photosynthesis Rates from R/V Cape Henlopen BAMS-multi in the Chesapeake Bay from 2001-2004 (BAMS project) Co-Principal Investigator	2008-11-19	Final no updates expected

Status message

Database

Contribute Data

Jonathan P. Zehr

Activities reported for Jonathan P. Zehr: