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Graph showing number of days per year that T(max) exceeds critical termal thresholds for brown trout in streams in the New Forest (b) 24.7 degrees Celsius - incipient lethal limit. Approximate values: open pool=9, shade pool=1, open riffle=10-15, shade riffle=0

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Graph showing number of days per year that T(max) exceeds critical termal thresholds for brown trout in streams in the New Forest (b) 24.7 degrees Celsius - incipient lethal limit. Approximate values: open pool=9, shade pool=1, open riffle=10-15, shade riffle=0


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Credit line: Forestry Commission

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