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Ensign

Closterium algae magnified 20x under a microscope.

A Fresh Look at River Algae in the Delaware River Basin

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A novel method to evaluate how algal concentration changes during river floods may be key to more accurately predicting how to keep algae under control. 

Rachel Johnson and Dave Arscott at the Watershed Heroes event.

Stronger Together: A Nonprofit Partnership Raises Road Salt Awareness

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Stroud Water Research Center is honored to have received the Watershed Heroes Nonprofit Steward award from Tookany/Tacony-Frankford Watershed Partnership.

Phytoplankton Dynamics at the Brandywine River

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High-frequency temperature, oxygen, and chlorophyll sensors, canoe float trips, and nutrient monitoring are the tools being used to study how much and how fast algae grow while they travel down…

Two scientists paddle on the Brandywine Creek in Pennsylvania during an algae bloom.

New Way to Trace Algae Origins Could ID Sources of Water Pollution

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Real-time chlorophyll sensors can be used to determine the origins of algae in rivers and streams. 

Algal bloom in Brandywine Creek where it flows under a railroad bridge.

Who’s Polluting Our Water? Scientists’ New Way to Trace Algae Origins Could Tell Us

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Not all algae are harmful but too much can be deadly. Why? Because when they die, the blooms feed bacteria that rob the water of oxygen. 

Publication title with image of a mayfly

Deciphering the origin of riverine phytoplankton using in situ chlorophyll sensors

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Peipoch, M., and S. Ensign. 2022. Limnology and Oceanography Letters 7(2): 159–166.

A motor boat on the Choptank River, with its wake and a bridge in the distance.

Sediment Sleuthing: Microbe DNA May Be Key to Restoring an Estuary Near You

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Stroud Center science teams are collecting river DNA samples to understand where sediment pollution comes from and the best ways to fight it.

Quantify and Support Installation and Restoration of Best Management Practices (BMPs) at Schools to Contribute Directly to Bay Restoration Goals

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Educators sampled school districts and conducted extensive research on sustainable school recognition programs across the Chesapeake Bay Watershed, with a focus on connections between teaching/learning and the implementation of BMPs…

Publication title with image of a mayfly

Ecosystem-based management for military training, biodiversity, carbon storage, and climate resiliency on a complex coastal land/water-scape

350 210 Stroud Water Research Center

Christensen, N.L., P.A. Cunningham, K. Matthews, I.C. Anderson, M.J. Brush, S. Cohen, C.A. Currin, S. Ensign et al. 2020. Journal of Environmental Management 280: 111755.

A modeling scenario forecasting Delaware River Basin stream health at the end of the 21st century.

Peering at the Future of Stream Water Quality Through a (Very Hazy) Crystal Ball

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The crystal ball we’re using is a web app that models how water, sediment, nitrogen, and phosphorus move across and underneath the earth’s surface.