Current Lab Group Members:

Amanda is involved in our DOP cycling project and is responsible for making Alkaline Phosphatase measurements, high sensitivity phosphorus measurements, and a variety of other phosphorus flux measurements.

Deb is responsible for overall data management, assists with manuscript preparation, and general operation of the lab.  Deb was a nutrient chemist and Chief Scientist with the BATS program for 6 years before joining the group.

Current Graduate & Undergraduate Students:

Jeff Krause
PhD - Oregon State Univ.
co-advised  Dr. Dave Nelson

Haley Brew
MSc  - Univ. Rhode Island
co-advised  Dr. Brad Moran

Vanessa Michelou
PhD Student - Univ. Delaware
Thesis committee

Brad is involved in our carbon export studies including the Neutrally Buoyant Sediment Trap project to compare trap designs and POC flux estimates, as well as the Particle Interceptor Trap (PITs) measurements of particulate phosphorus export in the Sargasso Sea.

Rob is a new post-doc in the lab working on a project to combine flow cytometry and stable isotope tracers of carbon and nitrogen to study the physiology of different autotrophic and heterotrophic populations in the marine environment.

John is our flow cytometer operator and involved in nearly every lab project as most of our projects involve flow cytometric analysis.  John was an REU student in my lab in 2005 and has come back to participate our research.  

Dr. Rob Condon
Post-doctoral Scholar
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George is studying the biological cycling of organic carbon and nitrogen in nearshore environments and the relationships between these nutrient biogeochemical cycles and harmful algal blooms. 

Jae's project is identifying the phytoplankton present during the spring bloom in the eastern Bering Sea and estimating the carbon associated with each major phytoplankton functional group.

Charlotte Best
PhD Student - Univ. Southampton
BIOS Supervisor

Melissa's project is to work with the Virtual Ecology Workbench, a software package developed by Dr. John Woods, to model the Sargasso Sea ecosystem.  The VEW is a lagrangian ensemble single particle model that allows groups of phytoplankton to interact.  These interactions result in the emergent properties of aquatic ecosystems.

Haley's work focuses on correlating variability in phytoplankton community structure to variability in euphotic zone carbon export.   Haley is currently a member of the teaching faculty at Cape Cod Community College.

Former Graduate Students in the Lab:

Vanessa's project is studying the competition for phosphorus compounds between bacteria and phytoplankton.  Vanessa is using flow cytometry to sort cells that have been incubated with 33P as a means to quantify uptake of various phosphorus substrates.

Charlotte will be studying the microphytoplankton community in the Sargasso Sea, both current and archived samples, in relationship to changing inorganic carbon chemistry.

Jeff's research focused on silica cycling in the Sargasso Sea and the Equatorial Pacific.  Currently Jeff is a post-doc in Dr. Mark Brzezinski's lab at Univ. California - Santa Barbara.

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Former Undergraduate Students in the Lab:

Ms. Chenchen Shen, Princeton-BIOS Summer Intern 2007.  Chenchen's project is to develop a modified higher sensitivity method for total dissolved phosphorus analysis.  Using this method, Chenchen studied the controls on dissolved organic phosphorus utilization in the Sargasso Sea.

Mr. John Casey, NSF-REU 2005.  John's project is employing taxon-specific N15 and C13 uptake experiments with Sargasso Sea phytoplankton. Specifically John is studying the utilization of different nitrogen substrates by Prochlorococcus and Synechococcus and the temporal variability of taxon-specific nitrogen utilization.  John presented his research at the Ocean Sciences Meeting in Hawaii in 2006.  John is currently finishing his bachelor of science degree at the College of Charleston, and preparing his research to be submitted for publication.

Ms. Joanna Mandecki, Princeton-BBSR Summer Intern 2005.  Joanna's project focused on developing the techniques for conducting taxon-specific N15 and C13 uptake experiments with Sargasso Sea phytoplankton.  This included optimizing filters for concentrating samples to shorten flow cytometric sort times as well as identifying the cell number necessary for good mass spectrometric analysis post sort.   Joanna is currently a senior at Princeton University Environmental Institute.

Mr. Ron Weissbard, Princeton-BBSR Summer Intern 2005.  Ron's project focused on developing techniques for the flow cytometric quantification of taxon-specific   alkaline phosphatase activities using the fluorogenic substrate ELF-97.  This project continues on from work that our group published in 2004.  Ron has graduated in May 2005 from Princeton University with a Bachelor's degree in Chemical Engineering.

Ms. Natalie Roberts, NSF Intern, 2005.  Natalie's project focused on the changes in nano- and microplankton community structure following the passage of storm events.  This project was part of our NSF-funded Winter Mixing/New Production project.  Natalie's research project will shortly be submitted for review to Deep Sea Research.  Natalie is currently in her last year at Oxford University.

Mr. Walt Carlson, NSF-REU 2004.  Walt's project focused on identifying the critical ratio for nitrogen and phosphorus ratio in marine phytoplankton.  The critical ratio is that ratio of nitrogen and phosphorus availability where phytoplankton switch from being most limited by nitrogen to being most limited by phosphorus.  Walt presented his work at the Aquactic Sciences Meeting in Salt Lake City, as the BBSR representative to the REU poster session at the meeting.  Walt graduated from Tennessee Technical University in 2005.

Ms. Jessica Lucchini, NSF intern, 2004.  Jessica was the project intern for our Winter Mixing/New Production project and studied phytoplankton growth rates in response to winter mixing events.  Jessica graduated from Southampton College - Long Island University in May of 2005 with a bachelor's degree in Marine Science.
                  
Mr. Ben Daly, NSF-REU, 2003.  Ben's project focused on changes in phytoplankton community structure under a variable CO2 atmosphere, and was co-advised by Dr. Nick Bates and I.  Although the work was not conclusive it was exciting enough to generate further research interest in this area between Nick and I.  Ben graduated from Hobart and William Smith College in May 2004 and is currently a graduate student at the University of Alaska - Fairbanks in the Marine Science and Limnology Program.

John Casey
Research Technician II
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Dr. Michael Lomas
Senior Research Scientist
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Amanda Burke
Research Technician II
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Deb Lomas
Research Technician III
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