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Entomology Group

600 400 Stroud Water Research Center

The Entomology Group studies factors that affect the distribution and abundance of aquatic invertebrates, the functional role of invertebrates in stream and river ecosystems, and how these invertebrate communities respond to human activities in temperate and tropical watersheds.

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Looking for macroinvertebrate identification resources?

Entomology Staff

Headshot of Jan Battle.

Juliann Battle

Staff Scientist
Katie Billé

Catherine Billé

Staff Scientist
Michael Broomall headshot.

Michael Broomall

Staff Scientist, Taxonomic Certification Program Coordinator
Adam Gochnauer

Adam Gochnauer

Staff Scientist
Courtland Hess

Courtland Hess

Staff Scientist
John Jackson, Ph.D.

John Jackson, Ph.D.

Senior Research Scientist

Entomology News

Stroud Center Executive Director David B. Arscott along with Director of Watershed Restoration Matthew Ehrhart and Senior Research Scientist Jackson, Ph.D., accept the Watershed Champion award.
Stroud Center Named Watershed Champion by Philly–Area Collaborative
A collaborative led by the Pennsylvania Environmental Council honors Stroud Center for its role in protecting and restoring the Delaware River Watershed.
An adult mayfly with large eyes sitting on a leaf.
Four Seasons of Salt Threaten Wildlife
Excessive winter salt use is leading to year-round pollution in fresh water. Discover why this is a problem and what you can do about it.
Publication title with image of a mayfly
Watershed survey of streams in western Bhutan with macroinvertebrates, water chemistry, bacteria and DNA barcodes
Battle, J.M., B.W. Sweeney, B. Currinder, A. Aufdenkampe, B. Fisher, and N. Islam. 2024. Journal of Threatened Taxa 16(11): 26089–26103.
Two scientists and a TV weatherman look at a crayfish captured from White Clay Creek.
Stroud Center Goes Live with Fox 29 Weather Team
Meteorologist Drew Anderson got his feet wet in White Clay Creek as some of our scientists discussed healthy streams with viewers of the live show.
A small brook trout swims in a shallow stream.
Too Hot to Handle: How Rising Temperature Impacts Streams
Human activities are increasing stream temperatures and harming habitat quality for freshwater fish and species like mayflies.
Publication title with image of a mayfly
To achieve the Clean Water Act’s goals, prioritize upstream ecology
Ensign, S.H., D.B. Arscott, M. Daniels, C. Dow, J.K. Jackson, D. Oviedo-Vargas, and M. Peipoch. 2024. Water Resources IMPACT 26(3): 19–21.