The impact of timber harvesting on the size, amount, and decay ...

Log Decay classLogCharacteristic1 2 3 4 5 6 7 8 9 10Bark intact trace absent absent absent absent absent absent absent absentSapwoodShape <strong>of</strong>unburnt crosssectionLog contactwith thegroundhard, andbrownhard, greyto lightbrowngrey, surfacecan't bescuffed <strong>of</strong>fwith bootgrey, surfacescuffed byboot, butends hard tobreak <strong>of</strong>fsurface <strong>of</strong>sapwood iscrumblysapwoodeasily brokenaway by handsapwoodmissing onparts <strong>of</strong> logsapwoodgonesapwoodgoneround round round round 95% <strong>of</strong> round 90% 75% 50% < 25% 10%Log free<strong>of</strong> groundLog free <strong>of</strong>groundFissures absent crackspossibleLog in contactwith groundcracksLog in contactwith groundcrackspresent, slightfissuring, 1-2cm deep, 8 -10 cm apartMoss absent absent absent some mosspossibleHeartwoodstrengthBranchesRegenerationat stumphard hard Jarrah hardMarri may bestarting tocollapseMinorbranchesintactNone,baregroundMinorbranchesintactSome litter,smallweedsMajorbranches stillintact if notburnt awaySome litter,small weedsJarrah hard,MarricollapsingMajor branchstubs or noneLitter cover,small acaciasLog in contactwith groundfor full length2 cm deepabout 10 cmapartLog in contactwith groundfor full lengthSitting ingroundSitting inground3 - 4 cm deep 5 - 7 cm deepfurrows in logsurfacepresent present present May beabsentJarrah hardbut decay ispresent, MarricollapsingMajor branchstubs or noneLitter cover,bracken orlarger plantsheartwoodcan bebroken awayby handheartwoodeasily brokenaway andcrumbled byhandheartwoodeasily kickedawaymerging withgroundDeep furrowsin log surfaceMay beabsentheartwoodrotten andeasily kickedawaysapwoodgoneOnly traceevidence <strong>of</strong>log remainsMay beabsentnone none none none noneLitter cover,bracken orlarger plantsLitter cover,bracken orlarger plantsSimilar tosurroundingground coverSimilar tosurroundingground coverClass 1 2 3 4 5 6 7 8 9 10heartwoodrotten andeasily kickedawaySimilar tosurroundingground cover