Archive for the 'Projects' Category

Version 6 of the Surface Ocean CO2 Atlas (SOCAT) now available

More than than 100 contributing scientists worldwide have contributed to Version 6 of the Surface Ocean CO2 Atlas (SOCAT). SOCAT (www.socat.info) is a synthesis activity by international marine carbon scientists with annual public releases. SOCAT version 6 has 23.4 million quality-controlled in situ surface ocean fCO2 (fugacity of carbon dioxide) measurements from 1957 to 2017 for the global oceans and coastal seas, as well as additional calibrated sensor fCO2 measurements.

Continue reading ‘Version 6 of the Surface Ocean CO2 Atlas (SOCAT) now available’

NEW CRP: Evaluating the impacts of ocean acidification on seafood – a global approach (K41018)

The IAEA is launching a new 4-year Coordinated Research Project (CRP) starting in 2019 to advance understanding on the effects of ocean acidification on seafood around the world and to explore adaptation strategies for aquaculture and seafood industries.

Intensive fossil-fuel burning and deforestation over the last two centuries has increased atmospheric carbon dioxide by 50 % above pre-industrial values. The global ocean currently absorbs roughly one third of this anthropogenic carbon dioxide, and its carbonate chemistry is fundamentally altered in the process. By doing so, the ocean undergoes a decrease in pH, referred to as ocean acidification.

Ocean acidification has been recognized as a major threat to marine ecosystems. Concern about the impacts of ocean acidification on socioeconomically important seafood is increasing world-wide, and ocean acidification is now an integral part of the United Nations 2030 Agenda for Sustainable Development. Furthermore, recent studies have demonstrated that ocean acidification may also impact the quality of seafood, and there is a growing body of literature documenting the biological response of seafood to ocean acidification. Long-term studies are essential to track the effects of ocean acidification, but there are few of these studies. Furthermore, data on economically and socially important seafood in developing countries are still largely lacking.

Continue reading ‘NEW CRP: Evaluating the impacts of ocean acidification on seafood – a global approach (K41018)’

Alaska shellfish assessment ocean acidification and climate research

oceanCurrent_03.jpg

Newly hatched snow crab larvae.

Effects of ocean acidification on Snow crab reproduction and early life history

Similar to our southern Tanner crab long-term ocean acidification project, we are examining the effects of long-term exposure to acidified waters on snow crab embryonic development, hatching success, calcification, and larval condition and mortality.

Ovigerous females are being reared in one of three treatments: ambient pH (~8.1), pH 7.8, and pH 7.5 for 2 years. Embryonic developmental stages and morphometics are being examined monthly.

At the end of year 1 and year 2, hatching success is being estimated and larval starvation survival and condition experiments are being conducted. At the end of year 1 after larval hatching, mature males were introduced into the female holding tubs so mating could occur prior to extrusion of eggs used in year 2 of the experiment.

At the end of the project female calcification will be analyzed. Due to the design of this project we will be able to examine carryover effects between oogenesis, embryogenesis, and the first larval stage.

Continue reading ‘Alaska shellfish assessment ocean acidification and climate research’

California Ocean Acidification and Hypoxia Science Task Force

California launches a new team of experts to inform continued action along the U.S. West Coast

Mission: The Task Force will serve as a responsive advisory body that will provide scientific guidance to the OPC in an ongoing manner to inform continued actions on ocean acidification and hypoxia in California and along the West Coast.

In the past few years, California decision-makers have pursued a diverse set of actions on OAH that span management and policy jurisdictions in response to the West Coast OAH Science Panel’s “Major Findings, Recommendations, and Actions” released in 2016. This includes investments to expand OAH observations and monitoring assets, exploring the role of submerged aquatic habitats (e.g., seagrasses and kelps) as a management tool, advancing modeling to identify drivers of OAH and potential hotspots along the coast, and exploring water quality criteria revisions.

Continue reading ‘California Ocean Acidification and Hypoxia Science Task Force’

Sensitivity of future ocean acidification to carbon-climate feedbacks

There are vast unknowns about the future oceans, from what species or habitats may be most under threat to the continuity of earth system processes that maintain global climate. Modeling can be used to predict future states and explore the impacts of climate change, but several key uncertainties such as carbon-climate feedbacks hamper our predictive power.

Continue reading ‘Sensitivity of future ocean acidification to carbon-climate feedbacks’

New edition of the “OA-ICC Highlights”, January – March 2018

highlights

The new edition of the “OA-ICC Highlights” summarizes the project’s main activities and achievements over the period January – March 2018. The content is structured around the  three major areas of work of the OA-ICC: science, capacity building and communication. Links to the project’s main resources are also provided.

Continue reading ‘New edition of the “OA-ICC Highlights”, January – March 2018’

OA-ICC bibliographic database updated

An updated version of the OA-ICC bibliographic database is available online.

The database currently contains more than 4600 references and includes citations, abstracts and assigned keywords. Updates are made every three months.

The database is available as a group on Mendeley. Subscribe online or, for a better user experience, download the Mendeley Desktop application and sync with the group Ocean Acidification (OA-ICC). Please see the “User instructions” for further details.


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OA-ICC HIGHLIGHTS

Ocean acidification in the IPCC AR5 WG II

OUP book