A study led by the University of Jyväskylä in Finland evaluated, for the first time, an ecological threshold for the amount of clearcutting in boreal forests. According to the results, maintaining populations of bird species specialized in old-growth forests requires either a forest rotation period of at least 90 years on average or that approximately one-fifth of the forest area be excluded from clearcut management. The study provides a concrete target for the ecologically sustainable use of forests.
How much clearcutting can nature sustain? A study determines the ecological limit for boreal forest birds
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