The Conte Research Group

UPDATED FEB 2010
Curriculum Vitae

JC Weber

Sr. Research Assistant
The Ecosystems Center
Marine Biological Laboratory
7 MBL Street
Woods Hole, MA 02543

Tel: (508) 289-7696
FAX: (508) 457-1548
Email: jweber@mbl.edu

 

EDUCATION

M.S., Marine Studies, Marine Biology & Biochemistry Program. University of Delaware, Lewes, DE. C.E. Epifanio, advisor. Sept 1994 - Jan 1996.

B.S., Biology, Marine & Freshwater Biology Concentration. University of New Hampshire, Durham, NH. Sept 1989 - May 1993.

PROFESSIONAL & RESEARCH EXPERIENCE

Aug 2004 – Present. Senior Research Assistant – The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA. Conducting multi-disciplinary research on ocean and terrestrial carbon cycle processes using a variety of geochemical and isotopic techniques. Continuing to expand upon our research begun at WHOI. Supervisor: Dr. Maureen Conte.

Oct 1996 – Aug 2004. Research Associate II (Sept 1998 – Aug 2004); Research Assistant III (Oct 1996 – Sept 1998) – Woods Hole Oceanographic Institution, Woods Hole, MA. Marine geochemistry & trace-biomarker laboratory. Focused on the organic geochemical analysis & characterization of aerosol, water column particulate and sediment trap material. Used biomarkers (phytoplankton alkenone signal – paleoceanographic sea temperature, carbon isotopic signature in plant waxes – terrestrial photosynthetic discrimination/functioning on large spatial scales important for climate studies). Supervisor: Dr. Maureen Conte.

Apr – Oct 1996. Laboratory Technician (temporary position) - Duracell, Inc., Needham, MA. Analytical laboratory. Conducted a variety of analytical procedures using wet chemistry and instrumentation to support research and production divisions. Supervisor: Efren Nazereno.

Sept 1995 – Jan 1996. Graduate Research / Research Assistant - University of Delaware, Lewes, DE. Larval crustacean & fish laboratory. Conducted laboratory studies for graduate research on settlement cues in larval decapods; assisted with laboratory and field studies of fellow graduate students in the larval research group. Supervisor/Advisor: Dr. Charles Epifanio.

Jan – Dec 1995. Research Assistant - University of Delaware, Lewes, DE. Chemical ecology laboratory. Screened multiple types of peristaltic pump tubing for organic chemical resistance to antibiofouling compounds. Supervisor: Dr. Nancy Targett.

Sept 1993 – Aug 1994. Research Technician - University of New Hampshire, Durham, NH. Environmental chemistry laboratory. Conducted laboratory experiments to examine the methylation of inorganic tin in salt marsh sediments. Supervisors: Drs. James Weber, Mark Hines & Steven Jones.

Jun – Aug 1993. Laboratory & Field Assistant - University of New Hampshire, Durham, NH. Biogeochemical & coastal chemistry laboratory. Participated in a variety of projects focusing on the biogeochemistry of salt marshes and nutrient cycling of coastal waters. Supervisors: Drs. Mark Hines & Theodore Loder.

Sept 1992 – May 1993. Project Leader: Integrated Aquaculture Project - University of New Hampshire, Durham, NH. Andromodous fish and invertebrate research laboratory. Examined the co-cultivation of fish and hydroponically grown vegetables and monitored nutrient dynamics. Supervisors/Advisors: Drs. Stacia Sower & Arthur Matheison.

Jan – May 1991, Jan – May 1992. Undergraduate Research Opportunities Program / Independent Work-Study Project: Isolation, transformation and regeneration of protoplasts of the green alga Ulva lactuca. University of New Hampshire, Durham, NH. Biotechnology laboratory. Supervisor/Advisor: Dr. Subhash Minocha.

Oct – Dec 1991. Member of an Antarctic Research Expedition - Woods Hole Oceanographic Institution, Woods Hole, MA. Extensive field study of the biogeochemical dynamics of an Antarctic lake; participation funded by a National Science Foundation REU grant. Project leader: Dr. Brian Howes.

Sept – Dec 1990. Laboratory Assistant (work study) - University of New Hampshire, Durham, NH. Biotechnology laboratory. Cell/tissue culture of vascular plants, media preparation, nucleic acid isolation and purification. Supervisor: Dr. Subhash Minocha.

Sept 1989 – May 1990. Laboratory & Field Assistant (work study) - University of New Hampshire, Durham, NH. Coastal chemistry laboratory. Laboratory analysis and data entry for projects examining oceanographic chemical processes. Supervisor: Dr. Theodore Loder.

Summers 1988, 1989, 1990, 1991. Guest Student / Research Assistant I - Woods Hole Oceanographic Institution, Woods Hole, MA. Coastal ecology / biogeochemisty laboratory. Participated in extensive analytical laboratory and field work on projects focusing on biogeochemical processes in coastal waters, coastal ponds and salt marshes. Supervisor: Dr. Brian Howes.


PUBLICATIONS & TECHNICAL REPORTS

MORTAZAVI, B., J. CHANTON, M.H. CONTE, T. MARTIN, W. CROPPER, T. TEKLEMARIAM and J.C. WEBER (2009). Carbon isotopic composition of assimilated and respired CO2 in Southeastern US pine forests. Global Change Biology. (submitted)

MORTAZAVI, B., M.H. CONTE, J. CHANTON, M.C. SMITH, J.C. WEBER, J. CRUMSEY and J. GHASHGHAIE (2009). Does the 13C of foliage respired CO2 and biochemical pools relect the 13C of recently assimilated carbon? Plant, Cell and Environment. 32, 1310-1323.

HOBBIE, J.E., E.A. HOBBIE, J.C. WEBER, J. SHAMHAR, H. DROSSMAN and M. CONTE (2009). Mycorrhizal fungi supply nitrogen to host plants in arctic tundra and boreal forests: 15N is the key signal. Can. J. Microbiology 55, 84-89.

CONTE, M.H., M.-A. SICRE, C. RUHLEMANN, J.C. WEBER, S. SCHULTE, D. SCHULZ-BULL and T. BLANZ (2006). Global temperature calibration of the alkenone unsaturation index (UK’37) in surface waters and comparison with surface sediments. Geochem., Geophys., Geosys. 7, doi: 10.1029/2005GC001054.

CONTE, M.H., T.D. DICKEY, J.C. WEBER, R.J. JOHNSON and A.H. KNAP (2003). Transient physical forcing of pulsed export of bioreactive organic material to the deep Sargasso Sea. Deep-Sea Research I, 50, 1157-1187.

CONTE, M.H., J.C. WEBER, P.J. CARLSON and L.B. FLANAGAN (2003). Molecular and carbon isotopic composition of leaf wax in vegetation and aerosols in a northern prairie ecosystem. Oecologia. 135, 67-77.

CONTE, M.H. and J.C. WEBER (2002). Plant biomarkers in aerosols record isotopic discrimination of terrestrial photosynthesis. Nature. 417, 639-641.

CONTE, M.H. and J.C. WEBER (2002). Long range atmospheric transport of terrestrial organic biomarkers to the western North Atlantic. Global Biogeochem. Cycles. 16(4), 1142.

CONTE, M.H., J.C. WEBER., L.L. KING and S.G. WAKEHAM (2001). Calibration of the Alkenone Temperature Signal in Western North Atlantic Surface Waters. Geochim. Cosmochim Acta, 65, 4275-4287.

CONTE M.H., J.C. WEBER, N. RALPH (1998) Episodic Particle Flux in the Deep Sargasso Sea: An Organic Geochemical Assessment. Deep Sea Research. 45, 1819-1841.

WEBER J.C., C.E. EPIFANIO (1996) Developmental response of mud crab, Panopeus herbstii H. Milne Edwards, megalopae to cues associated with potential nursery habitats. Marine Biology. 126(4): 655-661.

WEBER J.C., M.E. HINES, S.H. JONES, J.H. WEBER (1995) Interactions of tin(IV) and monomethyltin cation in estuarine water-sediment slurries from the Great Bay estuary (NH). Applied Organometallic Chemistry. 9: 581-590.

WEBER J.C., R.F. SILVA, L.M. JENSEN (1993) An integrated aquaculture project: The co-cultivation of Tilapia aureus and hydroponically grown tomato plants. Sea Grant Technical Report UNHMP-AR-SG-93-11.

RESEARCH PRESENTED AT PROFESSIONAL MEETINGS

(* indicates talks presented by J.C. Weber, otherwise contributed in the research & creation of the presentation and presented by M. Conte)

WEBER, J.C. and M.H. CONTE. Large spatial-scale and temporal variability in carbon isotopic fractionation of atmospheric CO2 by the terrestrial biosphere: A plant wax-aerosol proxy approach. European Geophysical Union, General Assembly, Vienna, Austria. April 2008.

MORTAZAVI, B., M. CONTE, M. SMITH, J. CHANTON, J.C. WEBER, J. CRUMSEY and J. BARKMAN. Contribution of stored carbon pools to leaf level biosynthesis and respiration as revealed by 13C labeling experiments. European Geophysical Union, General Assembly, Vienna, Austria. April 2008.

CONTE, M.H., J.C. WEBER. The Oceanic Flux Program (OFP) turns thirty. AGU/ASLO Ocean Sciences Meeting, Orlando, FL. March 2008.

TOLTIN, A.C., J.C. WEBER, M.H. CONTE. Phosphorus flux in the deep Sargasso Sea and partitioning between labile and refractory carrier phases, AGU/ASLO Ocean Sciences Meeting, Orlando, FL. March 2008.

CONTE, M.H., J.C. WEBER. Thirty Years of Continous Particle Flux Observations in the Deep Sargasso Sea: Looking Back, Looking Forward. Fall AGU Meeting, San Francisco, CA. December 2007.

CONTE, M.H., J.C. WEBER. Biomass Burning, Long-Range Atmospheric Transport and the Sedimentary Record of Plant Wax Biomarkers. Fall AGU Meeting, San Francisco, CA. December 2007.

CONTE, M.H., J.C. WEBER*. Spatial and Temporal Patterns in δ13C of Leaf Wax Aerosols in Continental Air Masses: Linkages with Ecosystem Discrimination. Fall AGU Meeting, San Francisco, CA. December 2006.

CRUMSEY, J., M. CONTE, J.C. WEBER, B. MORTAZAVI, M. SMITH and J. CHANTON. Turnover of Leaf Waxes in Florida Slash Pine: Results of an Isotopic Labeling Experiment. Fall AGU Meeting, San Francisco, CA. December 2006.

CONTE, M.H., J.C. WEBER. The Oceanic Flux Program time-series: Seasonality and interannual variability in particle flux in the deep Sargasso Sea. Ocean Chemistry & Biogeochemistry Workshop, WHOI, Woods Hole, MA. July 2006.

WEBER, J.C.*, M.H. CONTE. Organic biomarkers of biomass burning in Toolik Lake, Alaska aerosols: Source characterization and significance for long-range transport of carbon. Toolik Lake LTER meeting, MBL, Woods Hole, MA. March 2006.

WEBER, J.C., M. CONTE, S. HUANG, T. DICKEY, J. ACKER. Advection of detrital carbonate sediment to the deep ocean by passage of Hurricane Fabian over Bermuda. AGU Ocean Sciences Meeting, Honolulu, HI. February 2006.

CONTE, M.H., S. HUANG, J.C. WEBER, T.M. CHURCH. Modulation of particle scavenging in the ocean interior in response to mesoscale surface ocean forcing. AGU Ocean Sciences Meeting, Honolulu, HI. February 2006.

CONTE M.H., J.C. WEBER. Molecular and isotopic studies of biogenic aerosols and source vegetation at the Howland Forest Ameriflux site. Poster session, April 2004, 15th Annual Harvard Forest Ecology Symposium, Harvard Forest, Petersham, MA.

MEDIEROS P.M., M.H. CONTE, J.C. WEBER, B.R.T. SIMONEIT. Sugar biomarkers as source indicators of biogenic carbon in aerosols collected at the Howland Experimental Forest, Maine. Poster session, April 2004, 15th Annual Harvard Forest Ecology Symposium, Harvard Forest, Petersham, MA.

CONTE M.H., J.C. WEBER. Molecular and isotopic studies of biogenic aerosols and source vegetation in the Arctic, Toolik Lake LTER meeting, Marine Biological Laboratory.

BRUGNOLI E., C. MATA, A. SCARTAZZA, M.H. CONTE, J.C. WEBER. Seasonal and within canopy variations in the δ13C of leaf sugars and waxes in a European Beech (Fagus sylvatica) forest in the Mediterranean. Poster session, November 2003 SIBAE/BASIN workshop, Orvieto, Italy.

CONTE M.H., J.C. WEBER. δ13C of ablated leaf waxes in aerosols: Linkage with ecosystem discrimination. SIBAE/BASIN workshop, Orvieto, Italy.

CONTE M.H., J.C. WEBER. Long-range atmospheric transport of continental organic carbon to the western North Atlantic. Sept 2003, Goldschmidt Conference, Kurashiki, Japan.

CONTE M.H., J.C. WEBER. Plant wax biomarkers in aerosols: A novel approach to estimate carbon isotopic fractionation of terrestrial photosynthesis over large spatial scales. Sept 2003, Institute of Low Temperature Science, Hokkaido, Japan.

CONTE M.H., W.G. DEUSER, J.C. WEBER, N. RAPLH, E.H. ROSS, L. CHRISTMAN, J.N. KEMP, T.D. DICKEY, R.J. JOHNSON, A.H. KNAPP. The Oceanic Flux Program time-series: Evaluating the linkages between upper ocean physics and biology and export flux to the deep ocean. Sept 2003, Institute of Low Temperature Science, Hokkaido, Japan.

CONTE M.H., J.C. WEBER, T.D. DICKEY, R.J. JOHNSON, A.H. KNAPP. Surface-deep ocean linkages via particle flux at the Bermuda Time Series site. July 2003, JGOFS Open Science Conference, Washington D.C.

CONTE M.H., J.C. WEBER*, J. KENNEDY. Plant biomarkers in aerosols: A new approach to estimate terrestrial plant carbon isotopic discrimination on large spatial scales. June 2003, weekly science seminar, Toolik Field Station, Alaska

CONTE M.H., J.C. WEBER, M.-A. SICRE, D. SHULZ-BULL. The global alkenone temperature calibration in surface waters and comparison with the core-top UK37 temperature signal. Poster session, April 2003, EGS/AGU Conference, Nice, France.

CONTE M.H., J.C. WEBER, T. DICKEY, A. KNAPP, R. JOHNSON. Mesoscale physical forcing of pulsed export of bioreactive materials to the deep oligotrophic ocean. April 2003, EGS/AGU Conference, Nice, France.

CONTE M.H., J.C. WEBER. δ13C and δ15N in foliar vegetation at Howland, Maine. February 2003. Poster Presentation, NIGEC-NERC Annual Meeting, Harvard Forest, MA.

CONTE M.H., J.C. WEBER. What can biomarker compounds in the atmosphere tell you about terrestrial ecosystems? – Results from the Howland Forest. February 2003, NIGEC-NERC Annual Meeting, Harvard Forest, MA.

CONTE M.H., T.M. DICKEY, J.C. WEBER, R.J. JOHNSON, A.H. KNAPP. Mesoscale physical forcing of pulsed export of labile biogenic material to the deep Sargasso Sea. Jan 2003, IGBP/SCOR International Ocean Science Conference, Paris.

WEBER J.C., M.H. CONTE, M.-A. SICRE. Surface water versus core-top temperature calibrations of alkenone unsaturation (UK’37): Why the discrepancy? Poster session, December 2002 meeting of the American Geophysical Union.

CONTE M.H., T.D. DICKEY, J.C. WEBER, R.J. JOHNSON, A.H. KNAPP. Linkage between transient physical forcing and export flux of bioreactive materials to the deep oligotrophic ocean. Poster session, December 2002 meeting of the American Geophysical Union.

CONTE M.H., J.C. WEBER, T.D. DICKEY, D.J. McGILLICUDDY. Linkage between transient upper ocean physical and biological forcing and deep ocean flux at the Bermuda time-series site. Fall 2001 meeting of the American Geophysical Union.

CONTE M.H., J.C. WEBER. Long-range atmospheric transport of terrestrial organic biomarkers to the western North Atlantic: Implications for paleoclimatic assessment. International Meeting of Organic Geochemistry, Nancy, France – September 2001.

CONTE M.H., J.C. WEBER*, L. FLANAGAN, and P. CARLSON. Groundtruthing the CSIA-Aerosol technique for estimation of carbon isotopic discrimination of terrestrial photosynthesis. Poster session, Spring 2001 meeting of the American Geophysical Union.

CONTE M.H., J.C. WEBER. The isotopic signal of higher plant-derived biomarkers in aerosols: a novel method to estimate carbon isotopic fractionation by terrestrial photosynthesis. Spring 2001 meeting of the American Geophysical Union.

ZIVERI, P. KLEIJNE, A., CONTE M.H., J.C. WEBER. Coccolithophorid distribution and alkenone biomarker characterization from the Tropical-Equatorial Atlantic. European Geophysical Society (EGS) XXVI General Assembly, Nice, France, March 2001.

CONTE M.H., J.C. WEBER. The Isotopic Signal of Vascular Plant Waxes in Ocean Aerosols: A New Window on Terrestrial Photosynthesis. CICOR meeting, September 2000, WHOI.

WEBER, J.C., M.H. CONTE. Long-range atmospheric transport of terrestrial organic carbon to the western North Atlantic: Seasonality of the carbon isotopic signature of terrestrial biomarkers. EOS 80(49), 140. 2000 Ocean Sciences Meeting, January 2000, San Antonio, TX.

M.H. CONTE, J.C. WEBER*. Calibration of the Alkenone Temperature Signal in North Western Atlantic Surface Waters. Paleoceanography & Paleoclimatology session, Spring 1998 meeting of the American Geophysical Union.