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71 sturgeon died in BC’s Fraser River since July; research underway to find causes.
A surge in sturgeon deaths along British Columbia’s Fraser River has led the Tsawwassen First Nation to launch a research project.
Since July, 71 sturgeon have died, with 65 in the lower Fraser, far above past years.
Researchers are collecting, freezing, and tagging carcasses with trackers to study their movement and causes of death.
Rising river temperatures, habitat loss, propeller injuries, and gill net captures are suspected threats, especially as water temperatures exceeded 20°C.
Environmental DNA analysis is also being used to assess sturgeon presence and stress.
The project aims to inform conservation strategies for the ancient fish.
71 esturiones murieron en el río Fraser de BC desde julio; investigación en curso para encontrar causas.