What’s New

Photo of rusty crayfish.

Crayfish May Help Restore Dirty Streams, Stroud Study Finds

While macroinvertebrates are a tasty food source for crayfish, a new study reveals a surprising finding: When crayfish were present in in-stream experimental enclosures, macroinvertebrate density was higher, not lower.

Science Education Monthly Feature: Snake Eating Fish

Stroud Center scientists are often outside working in and around streams, and sometimes just happen to catch a view of the coolest things!

Check out this video with images of a water snake having its meal along the water’s edge. We’ll identify the species very soon, so stay tuned!

Photo of cows near a tree shelter.

Keeping Pathogens Out of
Drinking-Water Sources

Stroud Center scientists and a colleague from Lehigh University are studying how well best management practices on farms may protect drinking-water sources from pathogens like Cryptosporidium and E. coli. They are monitoring sites in the White Clay and Red Clay creek watersheds.

Photo of students sorting macroinvertebrates.

Spring School Field Trip Season Is Here!

We are expecting nearly 1,500 participants in our hands-on, boots-in-the-water programs — an 86 percent increase from last spring! We are now accepting school program reservations for next school year. Learn more about our education programs for school groups, educators, and community and conservation groups.

Screen shot of WikiWatershed website.

Expanded WikiWatershed® Toolkit Debuts

WikiWatershed is a Web toolkit presented by Stroud Water Research Center to help citizens, conservation practitioners, municipal decision-makers, researchers, educators, and students advance knowledge and stewardship of fresh water. The WikiWatershed toolkit now includes six tools.

Photo of Kristen Jellison, copyright RyanHulvat.com

Where Are They Now?

When Kristen Jellison, Ph.D., started her internship at the Stroud Center in the summer of 1996, she wasn’t sure where to go in her career. She got her first taste of investigative research while working in our dissolved organic matter and microbial ecology lab, and she was immediately hooked.

Screen shot of Leaf Pack Network groups map.

15 Years of the Leaf Pack Network®

The Leaf Pack Network helps people assess their stream’s health by performing a simple leaf pack experiment. Since the Stroud Center launched the Leaf Pack Network in late 2000, groups registered in 38 U.S. states and 11 countries have completed 671 experiments, tallying nearly 100,000 macroinvertebrates! Can you spot which states don’t have groups yet?

Start With a Smile

Start your shopping at smile.amazon.com and part of the purchase price will be donated to the Stroud Center, at no cost to you. It couldn’t be easier to support our freshwater research, education, and restoration programs. Thank you!

Children take a close look at aquatic macroinvertebrates.

Families Learn How Trout Grow on Trees

“The fish ... eat the insects ... on the leaves ... that come from trees!” shouted children and their parents through the forest along White Clay Creek. Their excitement echoed throughout the many educational games and activities during our Trout Grow on Trees® Family Day.

Photo of Emily Scott cradling an American eel.

Intern Connects Culture and Environment

Emily Scott’s background is unique for a Stroud Center intern. Unlike her peers, who are often students of environmental science, she majored in anthropology and religious studies. She hopes to launch a career communicating the need to protect endangered species.

A brook trout fry being raised at the Stroud Center.

Sharing Our Science, February 2016

  • Arscott and Colleagues Teach Next Generation of Freshwater Scientists
  • Stroud Center Spreads the Word About Trees for Clean Water
  • Education Programs Reach Students, Teachers, and Parents

Amazing Mayfly Video Goes Viral

This video of mayfly eggs hatching a minute after being laid sparked a huge response on our Facebook page! Shot by Stroud Center entomologist David Funk, it has also been viewed nearly 80,000 times on our YouTube channel.