Paytan Biogeochemisty Lab

photos of sunsets

University of California, Santa Cruz

Weixin Cheng - Environmental change and soil processes

Patrick Chuang -Interactions between aerosols, clouds, and climate

Peggy Delaney - Paleoceanography, phosphorus cycling and accumulation in marine sediments, trace metal geochemistry.

Andy Fisher - Hydrogeology, crustal studies, heat flow, modeling

Russell Flegal - Natural biogeochemical cycles of trace elements in the environment and the perturbation of those cycles by anthropogenic processes

Paul Koch - Isotope biogeochemistry and vertebrate paleontology

Raphael Kudela - Phytoplankton ecology

Matt McCarthy - Cycling and transformation of organic matter in the sea

Don Potts - Coral reef ecology, marine biodiversity, and remote sensing

Christina Ravelo - Paleoceanography, stable isotope geochemistry, climate change

Mary Silver - Toxic phytoplankton and food webs; pelagic detrital communities; particle dynamics; plankton ecology

Slawek Tulaczyk - Ice sheets and glaciers as dynamic features interacting with geologic, hydrologic, and climatic processes on different timescales

James Zachos - Paleoceanography, paleoclimatology, marine stratigraphy

Jonathan Zehr - Microbial ecology of aquatic systems, particularly oceans and lakes

Stanford University

Alexandria Boehm - Coastal water quality, coastal transport processes and their influence on pollution, water quality indicators, particle fate in water, coagulation, sedimentation, analysis of large data sets, applied math.

Arthur Grossman - examines how photosynthetic organisms perceive and respond to their environment, and to define how these responses are controlled and how they help the organism survive adverse conditions.

Elizabeth Hadly - studies the evolution and ecology of rodent populations over the last several thousand years.

Jim Hench - research in wave-driven circulation and exchange in coral reef, lagoon, and pass systems and on the effects of stratification on circulation and mixing in freshwater tidal rivers

Mark Jacobson - research in the physical, chemical, and dynamical processes in the atmosphere in order to address atmospheric problems, such as climate change and urban air pollution, with improved scientific insight and more accurate predictive tools

Stephen Monismith - research in environmental and geophysical fluid dynamics involves the application of fluid mechanics principles to the analysis of flow processes operating in rivers, lakes, estuaries and the oceans.

Jonathan Payne - research in the interaction between environmental change and biological evolution using fossils and the sedimentary rock record

United States Geological Survey, Santa Cruz

Eric Grossman - Sedimentology and stratigraphy, coral reef geology and ecology, nearshore processes, coastal hazards

Curt Storlazzi - Coral reef and rocky shoreface morphology, hydrodynamics, sediment distribution and the resulting modes of sediment transport; coastal hydrodynamics, interplay between geologic structure, climatic fluctuations and coastal processes, influence of extreme storm events on the geomorphic evolution of rocky coasts, coastal mapping and ground-truthing techniques

Pete Swarzenski - biological processes related to fluvial transport, integrated investigations of coastal aquifers

United States Geological Survey, Menlo Park

Tom Bullen - research geochemical processes involving reactions with mineral surfaces and substrates, which affect water quality and pollution contamination.

Carol Kendall - research includes using stable isotopes to trace food web structure, contaminant sources and biogeochemical cycling.

Tom Lorenson - Worldwide occurrence of gas hydrate;Surveys of hydrocarbon seeps and hydrocarbon gases in hot springs; Surveys of California coastal petroleum pollution; Sources and fate of pollutants.

Larry Miller - studies how micro-organisms alter the chemistry and productivity of aquatic environments by performing complex transformations of organic and inorganic molecules.

Bob Rosenbauer - organic, environmental and experimental geochemistry

Monterey Bay Aquarium Research Institute (MBARI)

James Barry - benthic biology and ecology

Francisco Chavez - group studies the biogeochemical response to climate and ocean variability. The data used in these investigation comes from moorings, with novel instruments and telemetry, satellites and ships.

Judith Connor - MBARI information and technology dissemination

Ken Johnson - research interests are focused on the development of new analytical methods for chemicals in seawater and application of these tools to studies of chemical cycling throughout the ocean.

Charlie Paul - investigation of fluxes of fluids and gases through continental margins, with a primary focus on gas hydrate research on Blake Ridge.

John Ryan - research in coastal upwelling events, specifically the physiology and ecology of phytoplankton in harmful algal blooms

Bill Ussler - studies processes associated with movement of fluids and gases from their source, through the seafloor, and into the ocean.

Moss Landing Marine Laboratories

Ivano A. Aiello - research in modern and past depositional mechanisms of pelagic marine biogenic sediments

Elkhorn Slough National Estuarine Research Reserve

Kersten Wasson - coordination of research program; research in biological monitoring, invasion biology, invertebrate zoology, and marsh ecology

John Haskins - water quality monitoring and research in nutrient dynamics, toxicology, and chemical oceanography

Carnegie Institute

Ken Caldeira - carbon cycle modeling, ocean modeling. Ken has published papers on climate stability of early Earth and the global carbon cycle as it has been affected by human activity over millions of years.

University of California, Davis

Tessa Hill - research in late Quaternary to modern environmental changes in the marine environment, utilizing the geochemistry of microfossils and corals

Ann Russel - research focuses on development and application of geochemical tracers of changes in ocean chemistry, including metals and stable isotopes in foraminiferal shells, and redox-sensitive metals in bulk sediments to reconstruct changes in ocean temperature, carbon chemistry, and redox environment from deep-sea sediment cores

Brant Allen - helping us with monitoring aerosols at the Tahoe Environmental Research Center

University of California, Santa San Diego

Jim Leichter - ecological consequences of oceanographic forcing mechanisms in coastal habitats

California Institute of Technology

Alex Sessions - organic geochemistry; stable isotope biogeochemistry; compound-specific isotope measurement and applications

Southern California Coastal Water Research Project

John Griffith - bacterial source tracking, and the development of rapid indicators for the detection of human fecal contamination and pathogens in urban runoff and marine receiving waters

Karen McLaughlin - nutrient dynamics in southern California coastal wetlands/watersheds and nutrient criteria to mitigate coastal eutrophication and nutrient loading

Steve Weisberg - development of coordinated, integrated, cost-effective regional monitoring in the Southern California Bight

Oregon State University (COAS)

Zanna Chase - research focuses on interactions between the chemistry and biology of the upper ocean.

University of Wyoming

Steve Jackson - research focuses on ecological and evolutionary responses to environmental change at timescales ranging from decades to millennia

Northern Arizona University

Scott Anderson -climate change and stand disturbance regimes such as fire, affect vegetation over long time scales

University of South Carolina, Columbia

Claudia Benitez-Nelson - understanding processes that dominate natural and/or anthropogenically induced climate change

Billy Moore - use of natural radioisotopes as tracers of geological and oceanographic processes

Bob Thunell - Reconstructing paleoceanographic and paleoclimatic conditions using deep sea sediments; measuring the production and flux of sediments in the ocean; calibration of paleoclimate proxies

Duke University

Avner Vengosh - research includes global changes of the chemical and isotopic compositions of water resources due to human intervention and contamination, salinization of water resources in the Middle East, and natural radioactivity of groundwater

Old Dominion University

Greg Cutter- Processes affecting trace element speciation and distributions in natural waters and sediments; air-sea transport and exchange of gases and trace elements; paleoceanographic tracers; analytical methods for aquatic chemistry; computer modeling of geochemical processes

Northern Illinois University

Gene Perry - research in collaboration with archeologists, geochemists, and soil scientists from other universities to develop and test stable isotopes in cave speleothem laminations as high resolution proxy measures of ancient climate for the past three millennia in the northern Maya Lowlands of Mexico

Cornell University

Natalie Mahowald - global and regional scale atmospheric transport of biogeochemically important species such as desert dust, both natural and anthropogenic

Woods Hole Oceanographic Institute

Scott Doney - marine biogeochemistry and ecosystem dynamics, large-scale ocean circulation and tracers, air-sea gas exchange, global carbon cycle

Yale University

Ellen Thomas - research on the impact of changes in environment and climate on living organisms on various time scales, from millions of years to decades, with the common focal point of benthic foraminifera (eukaryotic unicellular organisms)

University of Toronto

Ulrich Wortmann - investigating climates, environments and biology using stable isotopes

Canada Centre for Inland Waters, National Water Research Institute, Environment Canada

Sue Watson - algal secondary metabolites: chemical, ecological and socio-economic impacts on source waters

Agriculture and Agri-Food Canada

Barbara Cade-Menum - 31P NMR for identifying phosphorous compounds in soils and sediments

CINVESTAV-IPN, Merida, Mexico

Jorge Herrera-Silveria - ecology of primary production and biogeochemistry of coastal marine ecosystems.

Centro de Investigación Científica de Yucatán, A.C

Mario Rebolledo-Vieyra - sedimentology, paleontology, and geophysics of the K/T boundary in Mexico

Laura Hernández - trace metals and water chemistry impacts

Universidad Nacional Autónoma de México

Martin Merino Ibarra - dynamics of aquatic primary production and coastal zone management

University of Bristol

Derek Vance - using isotopes to study climate on millenial to million year timescales; erosion and weathering


Anton Eisenhauer - research focuses on interactions between sediment, oceanic, and atmospheric material reservoirs and the organisms (including humans) which mediate marine biogeochemical processes

Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR)

Francisca C. Martinez-Ruiz - characterization of climatic variability during the last 20.000 years in the Western Mediterranean based in a high resolution analysis of changes in the climate system

Hebrew University

Amatzia Genin - research interests include biological oceanography and coral-reef ecology, benthic-pelagic coupling, predator-prey interactions in the marine environment and biomechanics and effects of flow.

Anton Post - Molecular ecology and regulation of responses to envrionmental stress in marine cyanobacteria and prochlorophytes

Moshe Shenker -soil chemistry and soil fertility, related to plant nutrition and environmental aspects

Ben-Gurion University of the Negev

Arnon Karnieli - remote sensing applications of desertification and climate change processing

Yigal Alon Kinneret Limnological Laboratory

Ami Nishiri - studies on bio-geo-chemistry with emphasis on nutrients (Phosphorus, Nitrogen, Selenium, Silica), sediments and salinity issues in Lake Kinneret and in the Jordan River drainage basin

University of Jordan & Yarmouk University

Tareq Al Najjar - studies the Gulf of Aqaba, Red Sea

Page last updated on February 8, 2010