NASA Satellites Are Helping Maine Oyster Farmers Know Exactly Where to Grow

University of Maine researchers are turning decades of NASA and USGS satellite data into a practical online tool that takes the guesswork out of one of aquaculture's most consequential decisions: where to put your farm.

By the University of Maine Agricultural and Forest Experiment Station — summarized for agInnovation

Oyster farming has grown 78% in value in Maine between 2011 and 2021.

For oyster farmers, location is everything. Oysters are filter feeders—their size, flavor, and growth rate are entirely dependent on the temperature and nutrients in the water immediately surrounding them. Maine's coastline stretches roughly 3,400 miles, and conditions can shift dramatically within just a few miles of shoreline. Choosing the wrong site doesn't just slow your harvest—it can sink your business. And once you've secured an aquaculture lease, which is a long and difficult process, you can't simply move it.

Researchers at the University of Maine's Aquaculture Research Institute are working to change that calculus. By combining temperature data from NASA and USGS Landsat satellites with water clarity and nutrient data from the European Sentinel-2 satellite—and validating the results against seven years of field data—they've built a predictive model that can estimate how long oysters will take to reach market size at any given coastal location. An early version of the tool is already in use, and a fully accessible online version is on its way.

The implications reach beyond individual farms. Oyster farming has grown 78% in value in Maine between 2011 and 2021, and researchers see it as a meaningful way to diversify the state's blue economy—providing coastal workers with a more resilient alternative as lobster populations face habitat pressures. Oysters and lobsters also thrive in different conditions, meaning growth in one doesn't come at the expense of the other. Tools like this one help lower the barrier to entry for new farmers and reduce the risk for those already in the water.

This is land-grant research doing exactly what it's meant to do: taking publicly available data, applying rigorous science, and turning it into something directly useful for working farmers and coastal communities. NASA even featured the work on their own website—a signal of just how notable the collaboration between space science and American aquaculture has become.

Read the full story for a closer look at how the model works and what it could mean for the future of Maine's coastal economy.

Read the full story: New Satellite Data-Based Model Developed by UMaine Researchers Gives Oyster Farmers an Edge

Research like this is happening across America's land-grant university system. Subscribe to the agInnovation newsletter to get the latest stories delivered straight to your inbox.