A5036522140- Ocean Acidification Effects and Responses
- Marine and coastal ecosystems
- Oceanographic and Atmospheric Processes
- Marine Biology and Ecology Research
- Coral and Marine Ecosystems Studies
- Marine and fisheries research
- Marine Bivalve and Aquaculture Studies
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal plant biology
- Fish Ecology and Management Studies
- Crustacean biology and ecology
- Coastal and Marine Management
- Geochemistry and Elemental Analysis
- Microbial Community Ecology and Physiology
- Atmospheric Ozone and Climate
- Global Energy and Sustainability Research
- Heavy metals in environment
- Geological and Tectonic Studies in Latin America
- Calcium Carbonate Crystallization and Inhibition
- Oil Spill Detection and Mitigation
- Regional Economic and Spatial Analysis
- Calibration and Measurement Techniques
- Reservoir Engineering and Simulation Methods
- International Maritime Law Issues
- Space Exploration and Technology
Universidad Autónoma de Baja California
2014-2025
Fisheries and Oceans Canada
2008
NOAA Pacific Marine Environmental Laboratory
2008
National Oceanic and Atmospheric Administration
2008
Oregon State University
2008
SeaSpace (United States)
1997
The absorption of atmospheric carbon dioxide (CO2) into the ocean lowers pH waters. This so-called acidification could have important consequences for marine ecosystems. To better understand extent this in coastal waters, we conducted hydrographic surveys along continental shelf western North America from central Canada to northern Mexico. We observed seawater that is undersaturated with respect aragonite upwelling onto large portions shelf, reaching depths approximately 40 120 meters most...
Effective data management plays a key role in oceanographic research as cruise-based data, collected from different laboratories and expeditions, are commonly compiled to investigate regional global processes. Here we describe new updated best practice standards for discrete chemical observations, specifically those dealing with column header abbreviations, quality control flags, missing value indicators, standardized calculation of certain properties. These have been developed the goals...
The California Current System (CCS) is expected to experience the ecological impacts of ocean acidification (OA) earlier than most other regions because coastal upwelling brings old, CO 2 ‐rich water relatively close surface ocean. Historical inorganic carbon measurements are scarce, so progression OA in CCS unknown. We used a multiple linear regression approach generate empirical models using oxygen (O ), temperature (T), salinity (S), and sigma theta (σ θ ) as proxy variables reconstruct...
Abstract Syntheses of carbonate chemistry spatial patterns are important for predicting ocean acidification impacts, but lacking in coastal oceans. Here, we show that along the North American Atlantic and Gulf coasts meridional distributions dissolved inorganic carbon (DIC) mineral saturation state (Ω) controlled by partial equilibrium with atmosphere resulting relatively low DIC high Ω warm southern waters opposite cold northern waters. However, pH pressure CO 2 ( p ) do not exhibit a...
A successful integrated ocean acidification (OA) observing network must include 1) scientists and technicians from a range of disciplines (from physics to chemistry biology technology development) across the globe; 2) government, private, intergovernmental support; 3) regional cohorts working together on regionally specific issues; 4) publicly accessible data open coastal estuarine systems; 5) close integration with other networks focusing related measurements or issues including social...
Abstract. A quantification of carbon fluxes in the coastal ocean and across its boundaries with atmosphere, land, open is important for assessing current state projecting future trends uptake acidification, but this currently a missing component global budgeting. This synthesis reviews recent progress characterizing these North American ocean. Several observing networks high-resolution regional models are now available. Recent efforts have focused primarily on quantifying net air–sea...
Rhodolith beds are the dominant submerged calcifying aquatic vegetation in some coastal marine environments worldwide but few quantitative data available regarding their physiology. In Gulf of California (Mexico), Lithophyllum margaritae (Rhodophyta, Corallinaceae) is most abundant nongeniculate, rhodolith-forming coralline species. Over gulf-wide distribution, rhodoliths exposed to a wide range seasonal temperatures (~8–32ºC). The effect changes temperature on photosynthetic and...
This study reports the potential contribution of organic bases to alkalinity seawater samples. The concentration in these samples was inferred from difference between measured and that calculated a knowledge pH concentrations various inorganic acid‐bases species such as total carbon, boron, so on. Significant were cultures marine microalgae Rhodomonas sp. (800 µmol kg −1 ) Isochrysis aff. Galbana (400 ), well three environments (northern gulf California, México; San Quintín Bay, B.C.,...
Multidisciplinary ocean observing activities provide critical information to satisfy ever-changing socio-economic needs, and require coordinated implementation. The upper oxycline (transition between high low oxygenated waters) is fundamentally important for the ecosystem structure can be a useful proxy multiple objectives connected Oxygen Minimum Zones (OMZs). VOICE (Variability of Oxycline its ImpaCt on Ecosystem) initiative demonstrates how societal benefits drive need integration...
The air-sea CO₂ exchange is a critical process in regulating Earth's carbon cycle. At the ocean's surface, sea-surface microlayer (SML) - thin, organic-rich layer serves as interface between air and sea acts microreactor where unique chemical transformations occur, driven by sunlight, biological activity surface-active materials. However, its role not well explored. In this study, we present first direct measurements of organic alkalinity (OA) SML during mesocosm experiment...
Three oceanographic cruises were carried out in the region of Ballenas Channel (BC) during winter 2002, spring 2003, and summer 2004, order to study impact vertical mixing water column (ф) on surface concentration dissolved inorganic nutrients (NO3, PO4, Si(OH)4). Mean nutrient concentrations integrated over upper 100 m BC showed a clear seasonal variation, with higher values (18.2 ± 1.1 µM NO3, 2.36 0.08 35.4 3.2 Si(OH)4), associated well-mixed (ф = 0.7–16 J m–3), low (7.1 1.0 1.22 0.06...
Ocean acidification (OA) has resulted in global-scale changes ocean chemistry, which can disturb marine organisms and ecosystems. Despite its extensively populated coastline, many marine-dependent communities, valuable economies, the Gulf of Mexico (GOM) remains a relatively understudied region with respect to acidification. In general, warm waters GOM are better buffered from compared higher latitude seas, yet long-term been documented several regions. OA within is recognized as spatially...
Abstract This investigation reports, for the first time, results of CO 2 system variables in Gulf Tehuantepec, located Mexican tropical Pacific. We quantified post‐Tehuano concentration dissolved inorganic carbon (DIC) and pH (April 2013). These values were used to calculate pCO2, aragonite saturation (Ω Ar ), air‐sea fluxes (FCO ). The intense vertical stratification was found contribute biogeochemical processes surface waters (<70 m). However, conditions, high pCO2 (∼1000 µatm) DIC...
Abstract Porites panamensis is a hermatypic coral present in the eastern Pacific Ocean. Skeletal growth parameters have been reported, but studies of relationship between annual calcification rates and environmental controls are scarce. In this study, we investigated three aspects P. : among populations; sea surface temperature as rate control spanning latitudinal gradient; calcium carbonate production sites. Growth varied sites due to colony form. Massive colonies north showed higher than...
Oxygen minimum zones (OMZs) are important sources of CO2 to the atmosphere when physical forces bring subsurface water with high dissolved inorganic carbon (DIC) surface. This study examines, for first time, influence OMZ coastal North Eastern Tropical Pacific off Mexico on surface fluxes. We use variations in oxycline depth and masses discern oceanographic influences. During two cruises, November 2009 August 2010, DIC total alkalinity (TA) measurements were used estimate pCO2 air-sea At...
The ecological dynamics of picoplankton were investigated at a coastal upwelling system northern Baja California during six cruises (September 2007–November 2008). Populations Prochlorococcus, Synechococcus, PicoEukaryotes and heterotrophic bacteria assessed by flow cytometry (FCM). On each sampling date, we used an abbreviated three-treatment dilution technique 14C-uptake experiments to determine population (FCM) community (TChl a) rates growth, grazing production from 24-h in situ...