Roderick Haig-Brown

On

Conservation

is primarily dependent on their freshwater environment;

modification, even in the details that are apparently small,

can cause serious damage,"

(Roderick Haig-Brown. The Living Land. p. 148).

"...Fish (salmon),

within their rather specific requirements

of clean waters,

good flows, and productive estuaries,

have a resilience and adaptability

that will reward any serious attention,"

(Roderick Haig-Brown. The Living Land. p. 108).