Summary:
Researchers at Michigan State University (MSU) have created an open workflow designed to help ecologists work with large Earth observation datasets while reducing technical barriers to processing them. The approach goes beyond environmental averages by measuring geodiversity, or variation in conditions such as climate and elevation across landscapes and spatial scales.
Using high-resolution climate and elevation data, the team calculated metrics for sites in the National Ecological Observatory Network (NEON). The resulting dataset contains more than 20,400 values across 13 spatial layers, covering plot, site and domain scales. These measures describe both average conditions and environmental heterogeneity, giving researchers additional ways to examine how variation in temperature, precipitation and elevation relates to ecological processes.
The study, published in Scientific Data, also provides a reproducible R workflow that researchers can adapt for other locations and spatial scales. By making multiscale environmental data easier to process and use, the work could support research into relationships between environmental variation, ecological processes and patterns of biodiversity.
— Press Release —
These scientists are lowering barriers to big data from space
Zooming from her office, Michigan State University researcher Kelly Kapsar showed off stunning satellite images from across the United States.
In some, different colors revealed the precise heights of the forested ridges in the Sierra Nevada or the craggy peaks of the Rockies and the valleys between them. Others showed the pine flatwoods of southern Florida, or the smooth rolling grasslands of the Kansas prairie.
The images were taken by the space shuttle Endeavor during a 2000 mission to make detailed radar maps of planet’s surface.
Endeavour orbited Earth 16 times a day during the 11-day mission. In that time it took more than a trillion elevation measurements, generating a whopping 12.3 terabytes of data.
Since then, other Earth-observing satellites have measured things like temperature, rainfall, sea levels, carbon dioxide, snow cover, wind speeds, even dust – and at scales ranging from the span of a continent to patches barely larger than a tennis court.
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It’s a treasure trove of data. And by combining this data captured from space with measurements of plants and animals taken on the ground, researchers hope to better predict where species are most likely to thrive in the years to come, said Phoebe Zarnetske, who directs MSU’s Spatial and Community Ecology Lab (SpaCE Lab)
But there’s a hitch, said Kapsar, a postdoctoral associate in the SpaCE Lab.
While a lot of satellite remote sensing data is publicly available, for many researchers, taking advantage of it isn’t straightforward.
“We have so much satellite-based data now, but ecologists receive very little training on how to work with it,” Kapsar said.
“Once you start downloading satellite data, it gets into hundreds of gigabytes and thousands of layers,” Kapsar said.
That often requires technical expertise in supercomputing and big data analysis to process.
There’s another problem, Kapsar added. The statistical models that scientists use to map where plants and animals are likely to live often require a single, numerical value to characterize the environment. But from the perspective of, say, a vole or a beetle, summarizing a landscape in just one number doesn’t tell the whole story.
To illustrate, Kapsar pulled up a series of satellite images showing the contours of the land around sites within the National Ecological Observatory Network (NEON), a 30-year research effort to monitor changes at 81 field sites across the U.S..
One NEON field site within the Sierra Nevada mountain range in California has an average elevation of 7,050 feet. However, this number masks a lot of ups and downs, from towering 10,000-foot mountain peaks to valleys and meadows.
The same holds true when it comes to rainfall, Kapsar said. While annual precipitation in a NEON site near Las Cruces, New Mexico, in the northern Chihuahuan Desert stays pretty consistent around 11 inches a year, rainfall at another site in Hawai’i can vary drastically from 80 to 160 inches.
Also known as ‘geodiversity’, this heterogeneity in the environment can mean a lot to the plants and animals that live there.
Read also: France launches biodiversity mapping project using satellites and AI
“If you think about the world like many animals do, they’re not going to just take the average of a mountain landscape,” Kapsar said. “They have to contend with things like: how steep is this cliff? Can I climb it? How many ups and downs are there? How bumpy is the terrain? Are there places for me to hide?”
“The temperature and precipitation within an area can vary with the topography and vegetation to produce microclimates, where only certain species can thrive,” said co-author Lala Kounta, a climate scientist in the SpaCE Lab.
Kapsar, Kounta, Zarnetske, and collaborators are working on ways to provide geodiversity data to researchers and help close the gap.
Crunching massive amounts of satellite data on the MSU High Performance Computing Cluster in a new study, they hand over a set of climate and elevation geodiversity metrics that capture more than just the mean so researchers working at NEON sites across the U.S. can use them.
Originally developed for the field of surface metrology, the metrics include statistical measures of how “rough,” or “smooth” precipitation, temperature, and elevation are across the landscape, calculated using an open-source computer program developed by Zarnetske and MSU professor Kyla Dahlin and colleagues called ‘geodiv.’
Their paper also offers a “how-to” for researchers who want to use satellite data to capture this complexity at other sites around the world, and at different scales.
“The idea is to take the satellite’s perspective from way up high in the sky, and NEON’s intensive data collection on the ground – catching bugs, listening for birds, sampling plants – and bring them together to get the best of both worlds,” Kapsar said.
Collaborators include Patrick Bills (MSU Institute for Cyber-Enabled Research (ICER)), Sydne Record (University of Maine), Benjamin Baiser (University of Florida), Angela Strecker (Western Washington University), and Annie Smith (Washington Department of Natural Resources).
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This research was supported by grants from the National Science Foundation (1926567, 1926568, 1926569, and 1926610). The geodiv R package was supported by NASA Grant NNX16AQ44G.
Journal Reference:
Kapsar, K., Kounta, L., Bills, P. et al., ‘Multi-scale environmental geodiversity: data for the National Ecological Observatory Network (NEON) with an adaptable workflow’, Scientific Data (2026). DOI: 10.1038/s41597-026-07613-5
Article Source:
Press Release/Material by Robin Smith | Michigan State University (MSU)
Featured image: Sierra Nevada mountains in California, USA (28 October 2021). Credit: European Union, Copernicus Sentinel-3 imagery
