Monitoring ocean acidification in Fagatele Bay, American Sāmoa

Derek Manzello - NOAA Atlantic Oceanographic and Meteorological Laboratory

NCRMP OA Enterprise: National Coral Reef Monitoring Program – Ocean Acidification Atlantic

Why we care
Long-term observations of carbonate chemistry at U.S.-affiliated coral reef sites are critical to understanding the impact of ocean acidification on coral ecosystems over time.

What we are doing
Incorporating an interdisciplinary approach, this project will collect, process, analyze, and steward continuous data measuring parts of ocean carbonate system, the ocean’s buffering system. Specifically, this project will include partial pressure of carbon dioxide, pH (measure of acidity), dissolved inorganic carbon (DIC) and total alkalinity to document seawater carbonate chemistry at a newly established climate monitoring site in Fagatele Bay, American Sāmoa.

Benefits of our work
This work produces long-term, continuous, high-quality data of seawater carbonate chemistry needed to track where and how ocean chemistry is changing. The work will initially provide an increased understanding of the natural biogeochemical influences of reef carbon dioxide. In the future, this work will help determine if the magnitude of acidification occurring in the open ocean is also occurring at coral reefs. The buoy at this site will provide freely-available, high-quality carbon dioxide data people can use to better understand the carbon cycle of coral reefs in American Sāmoa and the impacts to coral ecosystems. This will be the only southern hemisphere Class III site in both the Atlantic and Pacific, spanning a large latitudinal gradient.

Thursday, March 10, 2022
Categories: Projects

PMEL Ocean Acidification Mooring Test-beds and Sensor Development: Evaluating and Expanding New Carbon Technologies to Subsurface Habitats

Adrienne Sutton - NOAA Pacific Marine Environmental Laboratory

Developing and expanding sensors to improve ocean acidification monitoring

Why we care:
Enhancing our ability to measure water chemistry with the best technology available is essential to understand and track where and how ocean acidification changes in marine ecosystems. The NOAA Pacific Marine Environmental Laboratory (PMEL) Carbon Group continuously augments, develops, and evaluates sensors on moorings to collect information about natural variability in inorganic carbon chemistry over daily to inter-annual cycles. This project will identify, develop, and implement the best technology to support the existing National Ocean Acidification Observing Network (NOA-ON) buoy network and increase coverage of ocean acidification time series observations.

What we are doing:
The three main project activities include: 1) compile autonomous profile data at the Chába site and apply to biological exposure research; 2) test prototype total alkalinity (TA) sensors at the coral reef test-beds at Kaneohe Bay, Hawaii (CRIMP2 buoy) and Florida Keys (Cheeca Rocks buoy); and 3) continue development of a pCO2-DIC sensor based on the need to improve data return of two carbon parameters from the NOA-ON buoys. These sensors measure parts of the carbonate system, the ocean’s buffering system.

Benefits of our work:
This project supports the main goals of the NOA-ON by quantifying temporal variability in the ocean carbon system and making these high-quality time series available to other scientists and the public. Specific benefits provided to stakeholders include: 1) improved understanding of the range of subsurface ocean acidification conditions in two U.S. coral systems; 2) improved understanding of annual, seasonal, and event-scale variability of subsurface ocean acidification conditions and the potential impact to marine organisms; and 3) improved access to high-quality, high-frequency subsurface data to inform biological research and validation of ocean biogeochemical models and coastal forecasts.

Thursday, March 10, 2022
Categories: Projects

Vulnerability of oyster aquaculture and restoration to ocean acidification and other co-stressors in the Chesapeake Bay

Marjy Friedrichs (Virginia Institute of Marine Science ), Emily Rivest (Virginia Institute of Marine Science ), David Wrathall (Oregon State University)

Coastal acidification and its associated co-stressors present a serious and credible threat to the success of both oyster aquaculture and restoration in the Chesapeake Bay. Recent research provides a clearer understanding of the physiological sensitivity of different economically and culturally valuable shellfish species to ocean acidification (OA), but we still lack a basic understanding of how vulnerability differs across the range of shellfish-reliant stakeholders, specifically participants in oyster aquaculture, the growers, watermen and coastal restoration managers. This basic knowledge gap motivates this work, which aims to: (1) assess the vulnerability of the oyster aquaculture industry and oyster restoration to OA and other co-stressors, and (2) produce the information required by regional communities to aid in adaptation to these stressors. In achieving these goals, we will better understand which shellfish stakeholders will be able to successfully adapt, which will seek alternative livelihoods, and what specifically causes the difference between these two disparate outcomes.

Monday, December 21, 2020

Assessing Community Vulnerability to Ocean Acidification Across the California Current Ecosystem

Ana K. Spalding (Oregon State University), Arielle Levine (San Diego State University), Tessa Hill (University of California Davis), Lida Teneva (Ocean Science Trust)

West Coast stakeholders, including fishers and shellfish farmers reliant on key economically and culturally important species, have already experienced adverse consequences of ocean acidification (OA and other stressors. However, the human dimension of vulnerability and people’s capacity to adapt, particularly in highly resource-dependent economies, remains understudied. In times of changing ocean conditions, high levels of dependence on natural resources expose certain coastal communities to higher risks and vulnerability. Achieving healthy ocean ecosystems and coastal economies in state and federal waters requires cross-disciplinary work to understand what factors (environmental, economic, social, cultural) determine the vulnerability of coastal communities to environmental change, as well as the potential for developing strategies to adapt to these changes. People’s adaptive capacity in the face of environmental disturbance depends on community knowledge, networks, and practices, as well as institutional policies and strategies that support adaptation. This project will assess how 6 coastal communities in Oregon and California are experiencing environmental vulnerability to OA and what they are doing to adapt to OA and associated impacts; as well as evaluate barriers to and key factors for coping in different contexts that can help inform policies to foster and support more resilient communities.The overarching goals of this project are to fill knowledge gaps about the vulnerability and adaptive capacity of coastal communities to OA and other environmental stressors in order to a)support thriving and resilient coastal communities along the U.S. West Coast and b) to support OA policy and decision-making at the state level of governance.

Monday, December 21, 2020

Assessing vulnerability of the Atlantic Sea Scallop social-ecological system in the northeast waters of the US

Samantha Seidlecki (University of Connecticut), Lisa Colburn (NOAA Northeast Fisheries Science Center), Shannon Meseck (NOAA Northeast Fisheries Science Center)

Of the fisheries made up of calcifiers in the Northeast United States, the Atlantic sea scallop fishery is worth more than $500 million per year, is the second highest fisheries revenue in the United States, and the largest wild scallop fishery in the world. The vulnerability and resilience of fishing communities to the effects of warming and Ocean Acidification (OA) on Northeast species is dependent on their adaptive capacity in relation to both social and environmental exposure and sensitivity factors. Communities that harvest a diversity of species may adapt more easily than communities that specialize in one or a few species. The regional contribution of sea scallop to total regional landed value has steadily increased over recent decades as has fishing community dependence on it as a source of revenue. Prior work projecting impacts to scallops in the region found that sea scallop biomass may decline by more than 50% by the end of the century with a large impact on the fishery (Cooley et al. 2015; Rheuban et al. 2018), but new tools and lab results are available for this proposed work that may alter this assessment. The team is working the hypothesis that a spatially- explicit regional projection of changes relative to sea scallop fishing zones can inform fishery management and allow communities that rely on Atlantic sea scallops to plan and become more resilient to future change. This work will develop a recommendation to management to assist scallop industry stakeholders and managers with changes in the fishery that result from projected OA and temperature changes. 
Monday, December 21, 2020