February 6th, 2020, 12pmET

Alkalinity Fluxes and Geochemical Properties of Harris Creek Oyster Reef Cores

This virtual seminar will explore how calcium carbonate shells and shelly habitats are increasingly recognized as potential mitigation approaches for localized acidification effects, yet very little is known about the alkalinity and geochemical properties of intact oyster reefs. This research team collected cores of restored oyster reefs in Harris Creek, MD and measured alkalinity fluxes under controlled conditions, and sacrificed several cores for solid and fluid phase chemistry. The combined effects of a significant amount of calcium carbonate shells with anaerobic metabolism appear to be key in ensuring preservation of the reef shell core. In other words, a healthy population of live oysters generating biodeposits appears to be crucial to shell persistence in these otherwise thermodynamically marginal conditions for calcium carbonate preservation.

Register here: 

Monday, February 3, 2020
Categories: Happenings

Thursday, January 30, 12-1pm EST

New Insights into the Complexity of Estuarine Acidification Seminar

This virtual seminar will focus coupled a comprehensive measurement program to retrospective and future model simulations to quantify controls on estuarine acidification in Chesapeake Bay,a large estuarine complex with strong gradients of salinity, oxygen, metabolicrates, and bathymetry. Researched found that estuarine acidification may be even more complex (and interesting!) than originally posited, owing to self-buffering processes within macrophyte communities, connections of acidification rates to watershed management aimed at oxygen improvements, and a varying buffering of acidification through altered carbonate chemistry within freshwater sources. This new understanding presents both challenges and opportunities to managing future acidification along the coast.

 Please register at:

Thursday, January 23, 2020

Letters of Intent Due January 24th, 2020

FEDERAL FUNDING OPPORTUNITY: Regional Vulnerability Assessments for Ocean Acidification

The Ocean Acidification Program is soliciting proposals for collaborative projects of up to 3 years in duration that synthesize ocean acidification information at a regional scale (e.g. Large Marine Ecosystem, large estuary or collection of small estuaries, and state or collection of states in US waters) to determine where societal vulnerabilities to ocean acidification exist or are emerging, in order to provide actionable information for marine resource decision makers. This funding opportunity will not support the collection of new chemical or ecological observations or species response data. Social science data collection is permitted.

Information about this opportunity can be found here: This grant is Funding Opportunity Number: NOAA-OAR-OAP-2020-2006333.  Email Letters of Intent to Full proposals should be submitted through

Important dates:  Letters of Intent are due January 24th and full proposals are due March 27th. 


Monday, November 25, 2019

November 4-8th, 2019, Portland, Maine

OAP Leaders Attend Gulf of Maine International Symposium 2050

The Gulf of Maine 2050 international symposium will integrate environmental, economic, social, and institutional perspectives on emerging climate challenges and opportunities. It will bring together multiple science disciplines, natural resource managers, municipal planners, representatives from key industries, a diverse mix of community leaders, non-governmental organizations, and the donor community. Leaders from across New England and the Maritime Provinces will come together to understand how the Gulf of Maine is expected to change in the next 30 years, build a shared vision for regional resilience, identify steps to achieve that vision, and activate new collaborations for action.
Tuesday, November 12, 2019
Categories: Happenings

To be held in Lima, Peru September 7-10, 2020

Announcing 5th International Symposium on the Ocean in a High-CO2 World

The SOLAS-IMBER Working Group on Ocean Acidification (SIOA) is pleased to announce that the 5th International Symposium on the Ocean in a High-CO2 World will be held in Lima, Peru on 7-10 September 2020. The lead organizers are Drs. Wilmer Carbajal (Pedro Ruiz Gallo National University, Peru) and Michelle Graco (Institute of the Sea of Peru, IMARPE) and colleagues, based on their successful bid that was submitted to the SIOA. The previous symposia in this series were held in Paris in 2004, Monaco in 2008, Monterey in 2012, and Hobart in 2016, each proving to be essential for the international, multidisciplinary community of researchers studying ocean acidification. The same is expected for this 5th symposium, the first to be held in South America.
Please save the dates! More detailed information will soon be available from the organizers.

Wednesday, May 22, 2019
Categories: Happenings