Contact:email@example.com Tel: 707-654-1149 Location: Faculty Office Building 120
Alex Parker is a biological oceanographer and an Associate Professor of Oceanography
at Cal Maritime. Dr. Parker's research efforts are primarily focused on marine microbial
biogeochemistry and span diverse marine environments.
Dr. Parker's research interest is marine microbial biogeochemistry, addressing questions
related to: 1) characterizing underlying controls on phytoplankton and bacterial processes
in aquatic systems. 2) quantifying microbial food web dynamics 3) understanding microbial
responses to coastal nutrient pollution. He primarily works in urbanized estuaries
(Delaware Bay and San Francisco Bay Estuary) where coastal pollution, including large-scale
nutrient fertilization, has had major impacts on the microbial community. In addition
to estuarine work, he has also conducted research in the Gulf of the Farallones National
Marine Sanctuary, the Equatorial Pacific Ocean, the Chukchi Sea (Arctic Ocean) and
With several published papers and more than one hundred research cruises to survey
the San Francisco Estuary, Dr. Parker works regularly with state science and natural
resource agencies to evaluate estuarine management strategies.
Glibert, P.M., R. C. Dugdale, F Wilkerson, A. E. Parker, J. Alexander, E. Antell,
S. Blaser, A. Johnson, J. Lee, T. Lee, S. Murasko, S. Strong. 2014. Major – but rare
– spring blooms in 2014 in San Francisco Bay Delta, California, a result of the long-term
drought, increased residence time, and altered nutrient loads and forms. Journal of Experimental Marine Biology and Ecology. 460: 8-18.
Buck, C., F. P. Wilkerson, A.E. Parker, R.C. Dugdale 2014. The influence of coastal
nutrients on phytoplankton productivity in a shallow low inflow estuary, Drakes Estero,
California (USA).Estuaries and Coasts.DOI 10.1007/s12237-013-9737-6
Parker, A.E.,W.J. Kimmerer, U. Lidstrom, U. 2012. Re-evaluating the generality of empirical models
for light-limited primary production in the San Francisco Estuary.Estuaries and Coasts.35(4):930-942.
Kimmerer, W.J., A.E.Parker, U. Lidstrom 2012. Short-Term and Interannual Variability in Primary Productivity in
the low-salinity zone of the San Francisco Estuary. Estuaries and Coasts.35(4): 913-929.
Parker, A.E., F.P. Wilkerson, R.C. Dugdale. 2012. Elevated ammonium concentrations from wastewater
discharge depress primary productivity in the Sacramento River and the northern San
Francisco Estuary. Marine Pollution Bulletin.64(3):574-586
Lefebvre, S.C., Benner, I., Drake, M.K., Rossignol, P.E., Okimura, K.M., Komada, T.,
Stillman, J.H., Parker, A.E. Carpenter, E.J. 2012. Nitrogen source and pCO2synergistically affect carbon allocation, growth and morphology of the coccolithophoreEmiliania huxleyi. Global Change Biology. 18(2):493-503.
Parker, A.E., Wilkerson, F., Dugdale R.C., Hogue, V., Marchi, A. 2011. Understanding spatial
patterns in nitrogen uptake and phytoplankton in the equatorial Pacific upwelling
zone (110ºW – 140ºW) during 2004 and 2005. Deep SeaResearch II. 58 (3-4): 417-433.
Brzezinski, M.A., Baines, S., Chai, F., Balch, W.M., Dugdale, R.C., Krause, J.W.,
Landry, M.R., Marchi, A., Measures, C.I., Nelson, D.M., Parker, A.E., Selph, K.E., Strutton, P., Taylor, A.G., Twining, B.S., Beucher, C. 2011. Co-limitation
of diatoms by iron and silicic acid in the equatorial Pacific. Deep Sea Research II. 58 (3-4): 493-512.
Sharp, J.H., Yoshiyama, K., Parker, A.E., Schwartz, M. C., Curless, S. E., Beauregard, A.Y., Ossolinski, J., Davis, A.R.
2009. The chemistry of the Delaware Estuary: seasonal and spatial trends and correlations. Estuaries and Coasts32(6): 1023-1043
Kirchman, D.L., Hill, V, Cottrell, M.T., Gradinger, R., Malmstrom R.R., Parker, A.E. 2008 Primary production and the processing of organic carbon by heterotrophic bacteria
in the western Arctic Ocean. Deep Sea Research II,56(17): 1237-1248.
Cottrell, M. T., R. R. Malmstrom, Hill, V. Parker, A.E. Kirchman, D.L. 2006. The metabolic balance between autotrophy and heterotrophy in
the western Arctic Ocean.Deep Sea Research Part I53(11): 1831-1844.
Parker, A. E. 2005. Differential supply of autochthonous organic carbon and nitrogen to the microbial
loop of the Delaware Estuary.Estuaries28(6): 856-867.
Sharp, J. H., A. Y. Beauregard, Burdige, D., Cauwet, G., Curless, S. E.,Lauck, R.,
Nagel, K., Ogawa, H., Parker, A. E., Primm, O. 2004. A direct instrument comparison for measurement of total dissolved
nitrogen in seawater. Marine Chemistry84(3-4): 181-193.
Alejandro Cifuentes-Lorenzen is a physical oceanographer and an Assistant Professor
of Oceanography at Cal Maritime. Dr. Cifuentes-Lorenzen's research expertise is in
air-sea interaction dynamics.
Alejandro Cifuentes-Lorenzen studies boundary layer physics. His research is focused
on further elucidating the role of waves in the transfer of momentum and kinetic energy
across the air-sea interface and is principally focused on wave-driven turbulence.
An objective of this work is to better understand wave-induced perturbations at the
boundary (above and below the sea surface) and, because these small-scale processes
have an enormous impact on regional and global transport but cannot be numerically
resolved, he seeks to characterize them and to contribute to the development of parameterizations
that can improve general circulation and atmospheric modeling efforts.
What: Further elucidate the transfer of energy from the atmosphere to the sea, a process
mediated by waves, including addressing the subsurface turbulent kinetic energy (TKE)
dissipation rate under breaking conditions and the wave dependent TKE dissipation
rate profile, a direct consequence of the energy exchange between wind and waves.
We will also investigate the importance of Langmuir circulation relative to Eulerian
shear production and the injection of TKE from wave breaking.
Who: A multi-institution, NSF supported project, in collaboration with scientists
from the University of Connecticut, Lamont Doherty Earth Observatory at Columbia,
University of Rhode Island and Woods Hole Oceanographic Institution.
Where: Dr. Cifuentes-Lorenzen led a comprehensive field campaign out of the Martha's
Vineyard Coastal Observatory (Fall 2019), designed to track the evolution of the turbulent
kinetic energy budget on both sides of the air-sea interface, capturing wave-driven
dynamics and wave-driven turbulence at the boundary layer.
Randolph, K and Cifuentes-Lorenzen, A. (submitted): The case for measuring whitecaps using ocean color and initial linkages to subsurface
physics.Special Topics in Air-Sea Interaction, Springer.
Cifuentes-Lorenzen, A.,Edson, J., Zappa, C.J., (2018):Air-Sea Interaction in the Southern Ocean; Exploring the Height of the Wave Boundary
Layer at the Air-Sea Interface.Boundary-Layer Meteorol.https://doi.org/10.1007/s10546-018-0376-0
Cifuentes-Lorenzen, A., J.B. Edson, and C.J. Zappa (2013)A Multisensor Comparison of Ocean Wave Frequency Spectra from a Research Vessel during
the Southern Ocean Gas Exchange Experiment.Journal of Atmospheric and Oceanic Technology,30 (12): 2907–25.
Randolph, K., H.M. Dierssen, M. Twardowski,A. Cifuentes-Lorenzen,and C.J. Zappa (2014).Optical measurements of bubble size distributions at 6-9 m depths generated by large
scale breaking waves in the Southern Ocean.J. Geophys. Res. Ocean,119, 757-776.
Brumer, S.E., C.J. Zappa, B.W. Blomquist , C.W. Fairall,A. Cifuentes-Lorenzen, J.B. Edson, I.M. Brooks, and B.J. Huebert. (2017)Wave-related Reynolds number parameterizations of CO2and DMS transfer velocities.Geophys. Res. Letters, 44. doi: 10.1002/2017GL074979
Brumer, S.E., Christopher J. Zappa, Ian M. Brooks, Hitoshi Tamura, Scott M. Brown,
Byron W. Blomquist, Christopher W. Fairall, andAlejandro Cifuentes-Lorenzen.(2017) Whitecap Coverage Dependence on Wind and Wave Statistics as Observed during SO GasEx
and HiWinGS.Journal of Physical Oceanography47:9, 2211-2235.
Edson, J.B., C.W. Fairall, L. Bariteau, C.J. Zappa,A. Cifuentes-Lorenzen, W.R. McGillis, S. Pezoa, J.E. Hare, and D. Helmig (2011).Direct Covariance Measurement of CO2Gas Transfer Velocity during the 2008 Southern Ocean Gas Exchange Experiment:Wind Speed Dependency.Journal of Geophysical Research, Vol 116,24 pp.
Oceans I Oceans II Oceans and Climate Physical Oceanography
Jenny Murphy is a geochemical oceanographer and a Lecturer in the Sciences and Mathematics
Department at Cal Maritime. Dr. Murphy's research interests are primarily focused
on carbon and nutrient cycling.
Dr. Murphy has a diverse research background, including experience working in deep
sea hydrothermal vent systems with the ROV JASON and oxidation-reduction chemistry
in permeable sediments at a near shore cabled observatory on Oahu. She has worked
in salt marshes around the San Francisco Estuary and Hawaiian Fishponds on Oahu, examining
the impact of photosynthetic organisms on nutrient cycling near the sediment-water
Murphy, Jennifer L. and Christopher I. Measures. 2014. Ocean Acidification: The Role
of CO2. Oceanography 27(1):238-246.
Murphy, Jennifer L., K.E. Boyer, E.J. Carpenter. 2018. Restoration of cordgrass salt
marshes: Limited effects of organic matter additions on nitrogen fixation. Wetlands.
Marine Biology and Marine Biology Lab Marine Ecology Lab Chemical Oceanography
Kaylan Randolph is a Research Scientist and Lecturer in Oceanography. Her research
is centered on relating freshwater, estuarine and oceanic optical properties to biogeochemistry
and upper ocean physics.
Dr. Randolph has been developing methods to measure whitecaps and bubble plumes using
measurements of in and above water optical properties and coupling the optics with
meteorological and wave field parameters to investigate the mechanisms underlying
the distribution and evolution and of naturally occurring, wind-wave induced bubbles
populations. She is further developing and implementing these approaches to link light
scattering and ocean color during wave breaking to turbulent kinetic energy dissipation
rates in an effort to characterize light scattering during wave breaking and to further
elucidate wave-driven turbulence at the air-sea interface. She has developed, coordinated,
and conducted field campaigns using a wide range of in and above water oceanographic
instrumentation from a variety of platforms.
Kate is leading a NASA funded effort to quantify the effects of breaking waves, and
bubble plumes on hyperspectral reflectance and to relate ocean color to turbulent
kinetic energy dissipation rates using above surface radiometry andin situoptics from the Air-Sea Interaction Tower at Martha's Vineyard Coastal Observatory,
Woods Hole Oceanographic Institute.
Cifuentes-Lorenzen and K. Randolph. (2020). The Case for Measuring Whitecaps Using Ocean Color and Initial Linkages
to Subsurface Physics. In: Vlahos P., Monahan E. (eds) Recent Advances in the Study of Oceanic Whitecaps (pp. 175-195). Springer, Cham.
Introduction to Ocean Remote Sensing
Scientific Program Manager, Golden Bear Research Center
Contact:firstname.lastname@example.org Tel: 707-654-1282 Location: Golden Bear Research Center
Chang, A.L., C.W. Brown, J.M. Crooks, and G.M. Ruiz. 2017. Dry and wet periods drive
rapid shifts in community assembly in an estuarine ecosystem.Global Change Biology. 24:1-16
Marraffin, M.L., G.V. Ashton, C.W. Brown, A.L. Chang, and G.M. Ruiz. 2017. Settlement
plates as monitoring devices for non-indigenous species in marine fouling communities.Management of Biological Invasions. 8:559-566
Zabin, C.J., G.V. Ashton, C.W. Brown, I.C. Davidson, M.D. Sytsma, and G.M. Ruiz. 2014.
Small boats provide connectivity for nonindigenous marine species between a highly
invaded international port and nearby coastal harbors.Management of Biological Invasions. 5:97-112
Murphy, K.R., J.R. Boehme, C.W. Brown, M. Noble, G. Smith, D. Sparks, and G.M. Ruiz.
2013. Exploring the limits of dissolved organic matter fluorescence for determining
seawater sources and ballast water exchange on the US Pacific coast.Journal of Marine Systems. 111-112: 157-166.
Davidson, I.C., C.J. Zabin, A.L. Chang, C.W. Brown, M.D. Sytsma and G.M. Ruiz. 2010.
Recreational boats as potential vectors of marine organisms at an invasion hotspot.Aquatic Biology. 11: 179-191
Zabin, C.J., G.V. Ashton, C.W. Brown and G.M. Ruiz. 2009. Northern range expansion
of the Asian kelp, Undaria pinnatifida (Laminariales, Phaeophyceae) in Western North
America.Aquatic Invasions. 4(3): 429-434
Davidson, I.C., C.W. Brown, M.D. Sytsma and G.M. Ruiz. 2009. Has containerization
helped to reduce the risk of spreading marine nonindigenous species via the biofouling
vector.Biofouling. 25(7): 645-655.
Santagata, S., K. Bacela, D.F. Reid, K.A. McLean, J.S. Cohen, J.R. Cordell, C.W. Brown,
T.H. Johengen and G.M. Ruiz. 2009. Concentrated sodium chloride brine solutions as
an additional treatment for preventing the introduction of nonindigenous species in
the ballast tanks of ships declaring no ballast on board.Environmental Toxicology and Chemistry. 28(2): 346-353
Published Technical Reports:
Brown, C., N. Dobroski, R. Nedelcheva, C. Scianni, and J. Thomspon 2017. Biennial
Report on the California Marine Invasive Species Program. Produced for the California
State Legislature. 127 pp.
Dobroski, N., C. Brown, R. Nedelcheva, C. Scianni, and J. Thomspon 2015. Biennial
Report on the California Marine Invasive Species Program. Produced
for the California State Legislature. 99 pp.
Scianni, C., C. Brown, A. Newsom, R. Nedelcheva, M. Falkner and N. Dobroski. 2013.
Biennial Report on the California Marine Invasive Species Program. Produced for the
California State Legislature. 125 pp.
Davidson, I., G. Ashton, G. Ruiz, C. Scianni, C. Brown, K. Pagenkopp-Lohan and R.
Fleischer. 2013. Richness, extent, condition, reproductive status, and parasitism
of fouling communities on commercial vessels. Report to the California State Lands
Commission, Marine Invasive Species Program. Sacramento, CA. 51pp.
Zabin, C.J., G. Ashton, C.W. Brown, I. Davidson, T. Chestnut, R. Draheim, M.D. Sytsma
and G.M. Ruiz. 2011. Hull Fouling: Characterizing Magnitude and Risk of Species Transfers
by Recreational and Fishing Vessels. Final report to the Pacific States Marine Fisheries
Boehme, J., K. Murphy, M. Noble, C. Brown, D. Sparks, G. Smith and G. Ruiz. 2008.
Full Scale Study: Demonstration Project for the Full Scale, Ship Based Application
of a Ballast Water Verification Method to Vessel Arrivals on the U.S. Pacific Coast.
Final Report submitted to the United States Department of Commerce, National Sea Grant
Murphy, K., J. Boehme, C. Brown, M. Noble, G. Smith, D. Sparks and G. Ruiz. 2007.
Ballast Water Exchange Verification: Testing Application of Chemical Tracers on the
U.S. Pacific Coast. Final Report submitted to the California State Lands Commission.
Ruiz G., C. Brown, G. Smith, B. Morrison, D. Ockrassa, K. Nekinaken. 2004. Analysis
of biofouling associated with the hulls of containerships arriving to the Port of
Oakland: a pilot study. In: Ruiz, GM, Smith G. Biological studies of containerships
arriving to the Port of Oakland. Oakland, California. pp 138-155
Stephen Loiacono is a staff scientist with the Golden Bear Research Center. He is
the Science Coordinator and Quality Manager for the Golden Bear Research Center and
is involved in research, development and testing of ballast water management systems.