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Shovelnose sturgeon face heat linked die offs in Iowa rivers
Iowa researchers study why the Des Moines River sturgeon die in mass events as water temps reach upper 80s to 97 degrees. Since 2002 four major kills have occurred, with thousands of fish perishing in 2012, 2023 and 2024. The work tracks movements with acoustic receivers and tags to gauge habitat use and migration, while authorities discuss dam operations and habitat changes affecting this long lived species.
MENTIONED IN THIS ARTICLE
Flammang
the Gazette
Iowa
Des Moines
DNR
Ottumwa
Farmington
Keosauqua
Bentonsport
Iowa State University
Des Moines River
Mississippi River
Michael Weber
Natural Resource Ecology and Management Department
Weber
Midwest
Cedar
Ryan Hupfeld
Hupfeld
Red Rock
Knoxville
Keokuk
ISU
DNA
Army Corps of Engineers
Perry Thostenson
Army Corps
Cedar Rivers
Chris Mack
Cedar River