Freshwater ecological research is crucial for understanding and preserving aquatic ecosystems, which are vital for biodiversity, human livelihoods, and global environmental health.
Freshwater habitats, including rivers, lakes, and wetlands, support a vast array of species and provide essential services such as clean drinking water, fisheries, and climate regulation. However, these ecosystems face growing threats from pollution, climate change, habitat destruction, and invasive species.
We count among our staff some of the nation’s finest freshwater scientists. Long-term monitoring of water quality and invasive species has transformed the Hudson River’s management and is applicable to large rivers worldwide. Cary scientists are also at the forefront of studies on how pollutants and agricultural practices impact water quality and play a leading role in a global network of lake research teams, the Global Lake Ecological Observatory Network (GLEON).
Through scientific research, we develop a deeper understanding of freshwater ecosystem health that can inform sustainable management practices. This knowledge helps mitigate human impacts and ensures the long-term availability of freshwater resources for both nature and society.
Explore our research

Pharmaceutical Pollution
Our medications enter freshwaters and impact aquatic life. We are studying ecosystem-wide effects of drugs and other novel contaminants to keep streams healthy and drinking water safe. Learn more ›

Harmful Algal Blooms
Lakes are turning toxic due to pollution driven by development and agriculture. Forecasting algal blooms via remote sensing could help lake managers protect people and pets. Learn more ›

Road Salt
A growing body of scientific evidence has found that our dependence on road salt comes at a cost to the environment and human health. Learn more ›

Hudson River
Since 1985, our scientists have been studying the Hudson’s water quality, food webs, and effects of invasive species and climate change. We use these data to help guide river management. Learn more ›

Sustainable Fisheries
Freshwater fisheries are in decline. We are studying the ways that people and nature impact lakes and the fish they support – to guide sustainable fishery management. Learn more ›