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Stroud Center

Stone mulch at the base of a sheltered tree, protecting it from rodent damage.

Stone Rivals Herbicides as New Method to Protect Baby Trees From Rodents

800 450 Stroud Water Research Center

During the first five years of growth, young trees need to be protected from chewing — from deer above and rodents below.

Postcard from Costa Rica

Postcard from Costa Rica: A Caracolera Comes Calling

800 450 Stroud Water Research Center

Rafa Morales, station manager at Maritza Biological Station in Costa Rica, shares photos and videos of interesting wildlife he encounters.

Publication title with image of a mayfly

Convergence of biofilm successional trajectories initiated during contrasting seasons

350 210 Stroud Water Research Center

Wang, J., M. Peipoch, X. Guo, and J. Kan. 2022. Frontiers in Microbiology 13: 991816.

Kathryn Metzker

Kathryn Metzker

400 400 Stroud Water Research Center

Watershed Programs Coordinator

An EnviroDIY monitoring station next to a USGS gaging station on White Clay Creek near Avondale.

The Best Environmental Sensor: Is EnviroDIY Water Quality Data as Good as USGS?

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For National Water Quality Month and World Water Monitoring Day, we’re putting EnviroDIY to the test!

Two kids hold hands while walking in a creek.

Did You Know That August is Make-A-Will Month?

768 432 Stroud Water Research Center

Whether you are 18 or 80, now is the time to plan your legacy! We invite you to join our Headwaters Society to ensure the future of clean fresh water.

Cover crop coach Steve Groff shows what is left of cotton underwear after being buried for 60 days.

Dirt Diaries: Soil Health Campaign Drives Underwear Digs Across Pennsylvania

800 450 Stroud Water Research Center

For the past two months, the soil life — worms, small insects, bacteria, fungi — has been chomping away at the 100% cotton underwear.

Mandy Nix collecting macroinvertebrates in the east branch of White Clay Creek.

Congrats and Farewell, Mandy Nix

800 450 Stroud Water Research Center

Stroud Water Research Center congratulates and says farewell to Mandy Nix, our all-star watershed education specialist, as she begins the next chapter of her career.

A stream cascade in Lofty Creek, Pennsylvania.

Assessment of Environmental Conditions in Streams of the Runnymede Sanctuary Based on Physical, Chemical, and Macroinvertebrate Monitoring

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The 1,670-acre Runnymede Sanctuary was created to preserve the extensive natural, historic, and scenic resources harbored by the property and to facilitate appropriate study and use of those resources. Its forests,…

Delaware River Watershed Initiative — Phase II Monitoring, Evaluation, Scientific Support, and Capacity Building for Watershed Protection and Restoration Projects

800 532 Stroud Water Research Center

This project collects and interprets data on macroinvertebrate specimens from stream sites to provide a baseline for the evaluation of goals defined for restoration and protection projects funded by the…