A5009314297- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Marine and fisheries research
- Ocean Waves and Remote Sensing
- Tropical and Extratropical Cyclones Research
- Marine and coastal plant biology
- Atmospheric and Environmental Gas Dynamics
- Underwater Acoustics Research
- Coastal and Marine Dynamics
- Marine Biology and Ecology Research
- Oil Spill Detection and Mitigation
- Coastal wetland ecosystem dynamics
- Methane Hydrates and Related Phenomena
- Ocean Acidification Effects and Responses
- Coral and Marine Ecosystems Studies
- Geology and Paleoclimatology Research
- Radar Systems and Signal Processing
- Water Quality Monitoring Technologies
- Hydrocarbon exploration and reservoir analysis
- Underwater Vehicles and Communication Systems
- Climate variability and models
- Meteorological Phenomena and Simulations
- Geological formations and processes
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
Michigan State University
2025
University of California, Santa Barbara
2014-2024
University of Southern California
1986-2024
Food and Nutrition Service
2020
University of California, Santa Cruz
2019
Stanford University
2019
Milligan College
2019
Oregon State University
2019
University of Hawaiʻi at Mānoa
2019
University of California, San Diego
1987-2016
Abstract Automated eddy detection methods are fundamental tools to analyze activity from the large datasets derived satellite measurements and numerical model simulations. Existing either based on distribution of physical parameters usually computed velocity derivatives or geometry streamlines around minima maxima sea level anomaly. A new algorithm was developed exclusively vectors. Four constraints characterizing spatial vectors centers were general features associated with fields in...
Wind-driven coastal ocean upwelling supplies nutrients to the euphotic zone near coast. Nutrients fuel growth of phytoplankton, base a very productive marine ecosystem [Pauly D, Christensen V (1995) Nature 374:255–257]. Because nutrient supply and phytoplankton biomass in shelf waters are highly sensitive variation upwelling-driven circulation, shifts timing strength may alter basic carbon fluxes through food webs. We show how 1-month delay 2005 spring transition upwelling-favorable wind...
The near-term progression of ocean acidification (OA) is projected to bring about sharp changes in the chemistry coastal upwelling ecosystems. distribution OA exposure across these early-impact systems, however, highly uncertain and limits our understanding whether how spatial management actions can be deployed ameliorate future impacts. Through a novel observing network, we have uncovered remarkably persistent mosaic penetration acidified waters into ecologically-important nearshore...
Abstract The severity of marine heatwaves (MHWs) that are increasingly impacting ocean ecosystems, including vulnerable coral reefs, has primarily been assessed using remotely sensed sea-surface temperatures (SSTs), without information relevant to heating across ecosystem depths. Here, a rare combination SST, high-resolution in-situ temperatures, and sea level anomalies observed over 15 years near Moorea, French Polynesia, we document subsurface MHWs have paradoxical in comparison SST...
The evolution of an upwelling filament was studied over a 2‐week period by using satellite infrared images, and its thermohaline structure mapped in situ. surface velocity field consisted large meander extending offshore for at least 300 km. northern branch ∼40 km wide, flowing peak 0.55 m/s; the southern inshore 0.35 m/s. transport more than 10 6 m 3 s −1 , larger Ekman transport. unstable to barotropic instabilities scale ∼15 From succession images convergence γ ≈ 8·10 −6 20 observed near...
Marine spatial planning (MSP) seeks to reduce conflicts and environmental impacts, promote sustainable use of marine ecosystems. Existing MSP approaches have successfully determined how achieve target levels ocean area for particular uses while minimizing costs but they do not provide a framework that derives analytical solutions in order co-ordinate siting multiple balancing the effects on each sector system. We develop such guiding offshore aquaculture (bivalve, finfish, kelp farming)...
Abstract Although theory suggests geographic variation in species' performance is determined by multiple niche parameters, little consideration has been given to the spatial structure of interacting stressors that may shape local and regional vulnerability global change. Here, we use spatially explicit mosaics carbonate chemistry, food availability temperature spanning 1280 km coastline test whether persistent, overlapping environmental mediate growth predation a critical foundation species,...
Abstract The desire to use sentinel species as early warning indicators of impending climate change effects on entire ecosystems is attractive, but we need verify that such approaches have sound biological foundations. A recent large-scale warming event in the North Pacific Ocean unprecedented magnitude and duration allowed us evaluate status giant kelp, a coastal foundation thrives cold, nutrient-rich waters considered sensitive warming. Here, show kelp majority associate with it did not...
We show that ocean fronts set recruitment patterns among both community‐building invertebrates and commercially important fishes in nearshore intertidal rocky reef habitats. Chlorophyll concentration of several species ( Balanus spp., Chthamalus Mytilus spp.) rockfishes Sebastes are positively correlated with front probability along the coast California Current Large Marine Ecosystem. Abundances recent settlers adults for rockfish also probability. The interaction coastal topography...
Abstract. The California Current Large Marine Ecosystem (CCLME), a temperate marine region dominated by episodic upwelling, is predicted to experience rapid environmental change in the future due ocean acidification. aragonite saturation state within System decrease with near-permanent undersaturation conditions expected year 2050. Thus, CCLME critical study rate of that resident organisms will and because economic societal value this coastal region. Recent efforts research consortium –...
Nutrient pollution is altering coastal ecosystems worldwide. On coral reefs, excess nutrients can favor the production of algae at expense reef-building corals, yet role in driving community changes such as shifts from to macroalgae not well understood. Here we investigate potential anthropogenic nutrient loading recent coral-to-macroalgae phase on reefs lagoons surrounding Pacific island Moorea, French Polynesia. We use nitrogen (N) tissue content and stable isotopes (δ15 N) an abundant...
Propagule dispersal in seaweeds is a process influenced by variety of biological and physical factors, the complexity which has hindered efforts to understand colonization, persistence, post-disturbance recovery, dynamics algal populations general. In view this limitation, we employ here modifications an existing turbulent-transport model explore mechanics nearshore macroalgal spore its relationship coastal hydrodynamic conditions. Our modeling focus on four example species seaweed whose...
The performance of a network five CODAR (Coastal Ocean Dynamics Application Radar) SeaSonde high-frequency (HF) radars, broadcasting near 13 MHz and using the Multiple Signal Classification (MUSIC) algorithm for direction finding, is described based on comparisons with an array nine moorings in Santa Barbara Channel Maria basin deployed between June 1997 November 1999. Eight carried vector-measuring current meters (VMCMs), ninth had upward-looking ADCP. Coverage areas HF radars included...
Two large steel tents (each 30 m by m), open at the bottom to seafloor, capture ∼16,800 3 d −1 (594 MCF) of primarily methane from a natural hydrocarbon seep, occurring kilometer offshore in 67 water. The gas is piped shore where it metered and processed. seep flow rate was monitored hourly for 9 months. Our results show that tidal forcing causes vary 4–7% around mean. These are first quantitative documentation effect tides on seepage relatively deep Time series analyses month record clearly...
Recent optical, physical, and biological oceanographic observations are used to assess the magnitude variability of penetrating flux solar radiation through mixed layer warm water pool (WWP) western equatorial Pacific Ocean. Typical values for penetrative at climatological mean depth WWP (30 m) ∼23 W m −2 a large fraction net air‐sea heat (∼40 ). The can vary significantly on synoptic timescales. Following sustained westerly wind burst, in situ fluxes were reduced response near tripling...
Passively dispersing propagules are often transported across a range of scales, with impacts on local processes tied to the density settlement, and regional influencing population connectivity. This dual set effects has spurred research targeting both short- long-distance ends dispersal spectrum. To date, however, distributions have been rigorously quantified primarily in terrestrial plants seeds. Dispersal ocean by comparison poorly defined. limitation arises particular force...
Abstract Dense arrays of surface drifters are used to quantify the flow field on time and space scales over which high-frequency (HF) radar observations measured. Up 13 were repetitively deployed off Santa Barbara San Diego coasts 7 days during 18 months. Each day a regularly spaced grid overlaid 1-km2 (San Diego) or 4-km2 (Santa Barbara) square, located where HF radial data nearly orthogonal, was seeded with drifters. As moved from they retrieved replaced maintain spatially uniform...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 327:119-133 (2006) - doi:10.3354/meps327119 Circulation and environmental conditions during a toxigenic Pseudo-nitzschia australis bloom in Santa Barbara Channel, California Clarissa R. Anderson1,*, Mark A. Brzezinski1, Libe Washburn2, Raphael Kudela3 1Marine Science Institute Department of Ecology,...
Oceanic sources of nutrients to the kelp forests Santa Barbara Channel were diagnosed using time series from three moorings in 12‐ 17‐m water depth. An situ nitrate autoanalyzer on provided first high‐resolution + nitrite (dissolved inorganic nitrogen, DIN) concentrations for this environment. Measurements between February 2001 and May 2003 show that major mechanisms supply DIN inner shelf are upwelling, diurnal internal motions, storm runoff. These vary importance seasonally. Upwelling...
signals with phase speeds of O(10) and O(100 to 300) km day −1 time scales 2 3 weeks. The slow speed are only observed in southern California. It is hypothesized that they scattered reflected by shoreline curvature bathymetry change do not penetrate north Point Conception. seasonal transition alongshore surfacecirculationforcedbyupwelling‐favorablewindsandtheirrelaxationiscapturedinfine detail.Submesoscaleeddies,identifiedusingflowgeometry,haveRossbynumbersof0.1to3, diameters the range 10 60...