Aquaculture for all

MSU researchers land NASA grant to study Asian aquaculture

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A grant of nearly $800,000 from the NASA Land Cover/Land Use Change (LCLUC) program, will allow researchers from Michigan State University (MSU) to assess the extent of aquaculture operations in Bangladesh, India, Myanmar and Thailand.

A satellite image covering 6 × 7 km of central Thailand

The corresponding automatically extracted aquaculture ponds are each coloured according to their area. © Lin Yan

Using satellite imagery and survey information, Drs Lin Yan, Ben Belton and David Roy will analyse how the industry is driving land cover and land use change in aquaculture hot spots.

"Aquaculture contributes substantially to global food and nutrition security and is projected to expand further in response to demand from an increasingly populous, affluent and urbanising world. When implemented sustainably, aquaculture can contribute substantially to addressing the challenges of global food and nutrition security. Yet, for many years, poor practices have often led to significant environmental damage in areas where it is employed," Dr Yan, assistant professor with the Center for Global Change and Earth Observations (CGCEO) at MSU, told Diane Huhn at MSU Today.

"Approximately 80 percent of global aquaculture production is currently taking place in Asia. Yet, it's long been assumed that much of Asian aquaculture has been implemented on a small scale. However, the size and tenure of aquaculture farms have been poorly documented. The factors that drive and mediate aquaculture change have been understudied in the past, and there are few sources of publicly available data on the boundaries of aquaculture ponds", commented Dr Ben Belton, associate professor with the MSU Department of Agricultural, Food, and Resource Economics.

"This research is of great academic interest but also has practical implications for policies affecting land use and aquaculture in key global aquaculture hot spots," said Dr Roy, professor of geography and the interim director of the CGCEO.

Work on the 3-year grant will commence in early 2023. Focal areas for the team will include the Ayeyarwady Delta in Myanmar, southwestern and northern parts of Bangladesh, the Central Plains around Bangkok in Thailand, and the Andhra Pradesh Province of India.

Dr Belton is a rural sociologist specializing in Asian aquaculture. Currently based in Malaysia, he has conducted aquacultural surveys across Asia. Combining the survey data with high-resolution satellite imagery, the team will work to characterise the use of aquaculture in these regions by type and scale and explore hypotheses to understand the drivers and constraints of aquacultural change.

"This work is an important part of the Center's mission to use the latest geospatial technologies to improve human and societal well-being while supporting global efforts to increase the use of sustainable aquaculture and lessen its potential negative impacts on the environment," said Dr Roy.

Click here to learn more the NASA Land-Cover and Land-Use Change Program.

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