October 8th, 2003	Dr. Paula Coble University of South Florida "Investigations of Colored Dissolved Organic Matter in Natural Waters".
October 15th, 2003	Dr. Avner Vengosh Ben-Gurion University of the Negev "The water crisis in the Middle East: Results from on-going study of the Jordan River and the Gaza Strip".
October 22nd, 2003	Dr. Mak Saito ** Location and Time Change: Mitchell Building, Room B67 at 2:00 ** Woods Hole Oceanographic Institution "Cobalt Biogeochemistry: Cobalt-Iron Co-Limitation in the Central North Pacific". Global Ecology Seminar: Ralph Keeling
October 29th, 2003	Dr. Kathy Barbeau Scripps Institute of Oceanography "Iron as a Micronutrient in Seawater: Chemical Structure and the Structure of Biological Communities"
November 5th, 2003	Gaurav Misra Stanford University "Hydrodynamics and Groundwater in Elkhorn Slough, California"
Nobemver 12th, 2003	Dr. Raphael Kudela Univerisity of California Santa Cruz "Lessons Learned From the Harmful Diatom Pseudo-nitzschia--Can We Really Predict What Happens in the Ocean?"
November 19th, 2003	Dr. Brian Popp University of Hawaii "Stable isotopic constraints on N2O production and sea-to-air flux in the North Pacific Ocean"
Debember 3rd, 2003	Dr. Ann Pearson Harvard University "Phylogenetic Solutions to Geochemical Problems"
January 7th, 2004	winter organizational meeting
January 14th, 2004	Dr. David A. Siegel University of California Santa Barbara "Colored Dissolved Organic Material in the Sea: Distribution, Dynamics & Implications"
January 21st, 2004	Dr. Jim Zachos University of California Santa Cruz "Methane Hydrate Dissociation and Global Warming at the Paleocene-Eocene boundary: New Insights from Recent Drilling in the Pacific and Atlantic"
January 28th, 2004	seminar cancelled due to AGU Ocean Sciences Global Ecology Seminar: David Victor
February 4th, 2004	Dr. Lonnie G. Thompson Ohio State University "A Perspective of Rapid Climate Change from Tropical Glaciers: Past, Present and Future"
February 11th, 2004	Dr. Alexandria B. Boehm Stanford University "Covariation of shoreline temperature and microbial pollution at interannual to tidal periods"
February 18th, 2004	seminar cancelled due to ASLO Ocean Sciences Global Ecology Seminar: Luiz Martinelli
February 25th, 2004	Megan Young Stanford University "Groundwater Discharge in a tropical coastal lagoon: using radium isotopes to identify nutrient sources"
March 3rd, 2004	Dr. Dominik Fleitmann Stanford University "Annual to millennial Indian monsoon variability recorded in Holocene and Pleistocene stalagmites from Oman and Yemen"
March 10th, 2004	Dr. Claudia Benitez-Nelson University of South Carolina "Particulate Phosphorus cycling across and oxic/anoxic interface: Implications for past, present, and future changes in nutrient limitation"
March 17th, 2004	Dr. Richard Barber Duke University "Response of Ocean Ecosystems to the Climate of 2050"
March 31st, 2004	spring organizational meeting
April 7th, 2004	Dr. Tim Lyons University of Missouri-Columbia 3.5 billion years of Earth's evolving biosphere as recorded in marine sulfur geochemistry
April 14th, 2004	Global Ecology Seminar: Jim Randerson
April 21st, 2004	Dr. Jody Webster MBARI Submerged coral reefs around Hawaii: recorders of catastrophic sea-level rise
April 28th, 2004	2004-2005 organizational meeting
May 5th, 2004	Dr. David Harwood University of Nebraska-Lincoln Neogene records of Antarctic life, ice sheets, and climate change
May 12th, 2004	Dr. Alan Cooper Stanford University/USGS Emeritus Prydz Bay revisited - Seeking clues to Antarctica's "Extreme Makeover"
May 19th, 2004	Dr. Chris Charles Scripps Abrupt change in southern hemisphere intermediate and deep water
May 26th, 2004	Al Tagliabue Stanford University Mike Lutz Stanford University
June 2nd, 2004	Dr. Kelly Falkner Oregon State University Hydrochemical highlights from the North Pole Environmental Observatory