What environmental shift between the 1950s and 1970s initially led to the decline of the Otterhound's primary function?

Answer

Chemical pollution decimating otter populations

Widespread chemical pollution caused otter populations across Britain and Europe to collapse between the 1950s and 1970s, leading otter hunts to cease voluntarily before the species was legally protected.

What environmental shift between the 1950s and 1970s initially led to the decline of the Otterhound's primary function?
animalconservationstatusDogOtterhound