Skip to main content
Loading Events

« All Events

  • This event has passed.

Understanding Brook Trout Persistence in Warming Streams

December 14, 2022 @ 4:00 pm - 5:00 pm

Wednesday, December 14, 2022 | 4:00 pm

Matthew O’Donnell

U.S. Geological Survey

Amy Regish
U.S. Geological Survey

Description
Cold-water adapted Eastern Brook Trout were historically widely distributed across the Eastern US from Georgia up to northern Quebec. However, due to factors associated with climate change, such as increased stream temperature and changing water flow, the number of streams containing brook trout is declining. Yet in some warming streams brook trout populations have persisted. To determine to what extent brook trout were utilizing cold-water refugia (groundwater input), in the spring we implanted temperature recording tags at six known brook trout sites representing warm, intermediate, and cold stream temperatures. We recovered fish at these six sites in the fall and brought them back to the laboratory where thermal tolerance was evaluated via a thermal challenge and physiological metrics. Data collected from downloaded temperature tags revealed water temperatures fish experienced throughout the summer which we compared to in stream temperature loggers. We relate this information to their performance in thermal challenges and physiological endpoints.

About the Speakers
Matthew O’Donnell is a Research Ecologist at the U.S. Geological Survey Eastern Ecological Science Center in Turners Falls, MA.

Amy Regish is a Research Physiologist at the U.S. Geological Survey Eastern Ecological Science Center in Turners Falls, MA.

Connection Information
This webinar will take place via Zoom. The link will be available ten days before its scheduled date.

More information: 
https://necasc.umass.edu/webinars/understanding-brook-trout-persistence-warming-streams

Details

Date:
December 14, 2022
Time:
4:00 pm - 5:00 pm