Stoneflies
Canaries of the Waterways
16 Jun 2017
Caddisflies, mayflies and stoneflies are considered 'canaries of the waterways' as they thrive when water quality is good and the first to disappear when it isn't. Audio
RNZ
Caddisflies, mayflies and stoneflies are considered 'canaries of the waterways' as they thrive when water quality is good and the first to disappear when it isn't. Audio