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Changes in the Mid-Atlantic

Converting ocean acidification data into insights about the species living in our water.

Species impact

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Marine phytoplankton are microscopic, photosynthetic organisms that form the foundation of the ocean's food web and produce over half of Earth's oxygen.

Marine Phytoplankton

Deep-sea corals are cold-water ecosystems that thrive without sunlight, providing vital habitats for diverse marine species.

Deep-Sea Corals

Finfish (any fish with a fin versus a shell) are a diverse group of fish species essential for marine ecosystems and a vital resource for global fisheries and aquaculture.

Finfish

SAV, comprising attached macroalgae and seagrass species, support coastal ecosystems by providing habitat, improving water quality, and buffering against climate change impacts.

Submerged Aquatic Vegetation (SAV)

Our crustacean species are ecologically important, and critical to the economy of the Mid-Atlantic.

Crustaceans

Mollusks are a varied group of soft-bodied animals, many of which have hard shells. They are essential to both marine ecosystems and human economies.

Mollusks

Zooplankton are tiny drifting animals that play a critical role in aquatic food webs, linking phytoplankton to larger marine species.

Zooplankton

Ecosystems are highly complex webs of species that mix in space and time, creating intricate relationships that can be difficult or complex to study.

Ecosystems

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Species Impact

Explore changes in the mid-atlantic storymap

Our storymap explains that and so much more.

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Webinars

MACAN hosts a webinar series each spring to highlight new research and educational tools and engage with our community.

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New MACAN Videos on Acidification Impacts & Solutions

MACAN Coastal & Ocean Acidification Workshop

Seagrasses in the Mid-Atlantic: Restoration Efforts and Blue Carbon Potential

Coastal Acidification and Harmful Dinoflagellate Blooms: Interactions and Emerging Implications for Marine Ecosystems and Organisms

Responsible Deployment of mCDR: Strategies and Case Studies

‘Hooked on Ocean Acidification’ Series for Recreational Anglers

“How To” Guide to the Digital Atlas for Physical & Biogeochemical Conditions in Chesapeake Bay

Highlights from MACAN’s 2024 Fellowship Projects

Chesapeake Carbon and Alkalinity Study (CHALK)

How Tuesday Webinar: Coastal and Ocean Acidification Data

MACAN Projects & Priorities for 2024

OA Research Highlights Around the Region: Part 2

A Coupled Biogeochemical-Biological-Economic Modeling System to Quantify Climate Change Impacts on Oyster Aquaculture in Chesapeake Bay

Mitigating OA through Marine CDR: Opportunities and Challenges

OA Research and Education Highlights around the Region

Linking Biological Monitoring with Chemical Observations to Understand Impacts of OA

Sea Grant OA Fellows Spotlight: Research Across the Mid-Atlantic Region

Creating a Coastal Acidification Module for Mid-Atlantic Teachers

MACAN and OA Alliance 2021 Virtual Workshop

State-Led OA Action Planning in the Mid-Atlantic

Climate Change and Submerged Cultural Resources in the Mid-Atlantic

Examining the Biological Responses of Ocean Acidification in Early Life-Stages of Fishes of Inshore Waters of the Mid-Atlantic

NOAA National and Mid-Atlantic Ocean Acidification Research Plan

Intro to Ocean Acidification Action Planning

Responding to Change Perspectives from Commercial Shellfish Industry Members

Acidification Effects upon the Atlantic Surfclam

State and Federal Ocean Acidification Policy Action

The OADS and OCAD Projects (Series 3, Webinar 3)

Profiling Glider (Series 3, Webinar 2)

Monitoring in the New York Bight

Managing Global Acidification on a Regional Scale

MACAN Monitoring Plan Webinar

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Contact Us

View Macan's 2024-2028 Work plan

If you are interested in learning more about MACAN and the work we do, please sign up for our <a href="/subscribe/">monthly newsletter</a>. You can also read our <a href="https://cms.midacan.org/wp-content/uploads/2025/09/MACAN-5-Year-Workplan-2024-2028.pdf" target="_blank" rel="noopener">2024 to 2028 Work Plan</a>.

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About Us

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MACAN’s committed to understanding, predicting, and mitigating the impact of acidification on our oceans and coastal ecosystems.

A collaborative team committed to addressing the pressing environmental issue of coastal acidification in our region.

What is Acidification

Increased atmospheric carbon dioxide drives ocean acidification, lowering pH.

Diverse monitoring addresses complex coastal and estuarine acidification drivers.

Factors such as geography, climate, and human activities vary across different regions, impacting the extent and rate of ocean acidification.

Ocean acidification is driven by excess global carbon dioxide and water pollution from land runoff, and there are ways communities can help.

Converting ocean acidification data into insights about the species living in our water.

Microscopic marine plants that form the base of ocean food webs.

Blue crabs are crucial to Mid-Atlantic ecology and economy.

Gorgonian sea fans and bamboo corals create vital deep-sea habitats.

A diverse group of animals vital to fisheries.

Mid-Atlantic finfish are essential to marine ecosystems and economies alike.

Vital food web organisms with varying responses.

SAV, including eelgrass, provide vital coastal habitat.

Highly complex webs of species that mix in space and time.

News & Events

OA Policy and mCDR

Ocean acidification action planning is states coordinating efforts to monitor, mitigate, and build resilience against acidification threats.

Marine carbon dioxide removal (mCDR) is a technique being investigated to mitigate climate change.

Resources

A wealth of informational resources on estuarine, coastal, and ocean acidification in the Mid-Atlantic.

References on estuarine, coastal, and ocean acidification in the Mid-Atlantic.

Explore our full collection of resources

Explore concise fact sheets and publications for key insights and actionable information.

Access and utilize data resources for in-depth analysis and informed decision-making.

Discover tools and materials designed to support educators in teaching and inspiring students.

Review detailed workshop reports for insights, outcomes, and actionable recommendations.

Visualize key information and data through engaging and easy-to-understand infographics.

Webinars

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