Eftersom diskussionen bottnade i granbarkborren och det pågår kritik mot "statens odling av detta skadedjur" så hänvisar jag till lite forskning.
Citat:
Changes in the herb and moss layers of mountain spruce forests after bark beetle outbreak were compared with and without forestry intervention.
The study area is situated in the Šumava National Park where an extensive bark beetle outbreak occurred in the 1990s.
Parts of forests were left without interventions, while salvage logging was applied in other areas.
Altogether, 18 permanent research plots were established in: (1) climax stands (skogar) with completely
dead canopy, (2) climax stands where salvage logging was applied (clearcuts), and (3) water logged stands with only partly dead canopy.
Vegetation composition of the ground layer and species numbers were evaluated in 1997 and 2002.
The effect of salvage logging on vegetation was greater than that of the bark beetle outbreak itself.
Forest herb species and partly also bryophytes (mossor) survived relatively well under untouched dead canopy. The fewest changes occurred under the partly dead canopy in waterlogged forests. The herb layer expanded in clearcuts originated due to salvage logging, being dominated by grasses. Bryophytes were more susceptible to logging than herbs;
their cover in clearcuts was markedly lower and composition changed towards pioneer species.
The results show that a natural succession of mountain spruce forests after a barkbeetle outbreak, if left without interventions, will probably avoid a pioneer stage and direct recovery of the forests will be possible. Salvage logging had negative effects on species composition of the spruce forests, delayed the forest recovery, and should not be permitted
in the national park.
länk
Här hade man alltså avverkat sjuka träd utav bara helvete, och i dom delar där man lät skogen stå så återhämtade sig skogen, och pga man inte avverkat så fanns det fler arter kvar vilket snabbade på återhämtningen.
Det är bara en studie, och det är inte skrivet i sten, men jag tror man kan låta vindfällen ligga och skita i kommunen, ända tills det blir nån form av hot, då får man väl hugga tag, men för övrigt ska det funka att låta skogjäveln stå, och tillochmed angripas och rida ut stormen av granbarkborre.
