Researchers are conducting a six-year investigation into Arctic ecosystems along Alaska’s North Slope to determine whether species can adapt together in response to rapid climate change. The $15 million project, supported by the US National Science Foundation, focuses on five key species: white-crowned sparrows, feltleaf willows, Arctic grayling fish, aquatic mayflies, and ground beetles. Scientists are examining how these organisms’ relationships with one another might enable them to adapt collectively, potentially allowing entire ecosystems to persist despite accelerating environmental shifts.
The Arctic is warming faster than any other region on Earth, causing significant ecological disruptions including earlier spring snowmelt, shifting precipitation patterns, and habitat changes. Willow shrubs are expanding along streams and rivers in a process called shrubification, which could disrupt the lifecycles of aquatic insects like stoneflies and mayflies. These insects are critical food sources for both migratory white-crowned sparrows and Arctic grayling fish, creating interconnected dependencies throughout the ecosystem. Early spring floods and late-summer droughts may strand fish in isolated pools, while timing mismatches between predators and prey could cascade through food webs.
About 50 scientists from US research institutions are working across 15 field sites along a roughly 190-mile stretch of the Dalton Highway, which connects Fairbanks to the Prudhoe Bay oilfields. They are deploying sticky traps to collect insects, recording equipment to monitor bird vocalizations, temperature sensors in streams, and mesh bags to collect plant material. The research team is led by Linda Deegan, a senior scientist at Woodwell Climate Research Center, who heads the Evolving Meta-Ecosystems Institute project.
Traditionally, evolution and adaptation have been viewed as individual species-level processes driven by competition. However, this research explores whether longstanding ecological relationships might enable species to evolve and adapt in coordinated ways that preserve ecosystem function. The choice of Alaska’s tundra and stream ecosystems offers advantages for this study: the Arctic represents Earth’s most rapidly changing region, and its relatively simple ecosystems contain fewer species whose interactions are easier to track than in more complex ecosystems elsewhere.
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