Faculty

Tyler Wagner

Adjunct Professor of Fisheries Ecology

402 Forest Resources
University Park, PA

Email txw19@psu.edu
Phone 814-865-6592

Ecology IGDP

Flatheads grow fast in this river system, attain large body sizes and can eat a variety of prey. Because adult flatheads have few natural predators, they can exert strong control over the ecosystem. Credit: Penn State. Creative Commons

September 04, 2025

Invasive flathead catfish now top predators in Susquehanna River in Pennsylvania

April 04, 2023

Innovative method predicts the effects of climate change on cold-blooded animals

Example of the diversity of cold-blooded animals whose distribution and abundance under future climate conditions could be predicted using the newly developed model. Credit: Fish image, Gretchen Hansen; all other images Rebecca Wagner . All Rights Reserved.

April 03, 2023

Innovative method predicts the effects of climate change on cold-blooded animals

Lead researcher Erynn Maynard-Bean trains Penn State undergraduate researcher Richard Novak to collect leaf phenology data during a field trip in 2016. IMAGE: WARREN REED/PENN STATE

August 19, 2020

Invasive shrubs in Northeast forests grow leaves earlier and keep them longer

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