• Graeme McMahon's Avatar
    2 Weeks Ago
    :thumbup:
    71 replies | 2529 view(s)
  • Graeme McMahon's Avatar
    12-16-2018
    To me it seems the experience needed to decide wedge, rope or both is the issue. Knowing how to use them is another matter.
    49 replies | 2497 view(s)
  • Graeme McMahon's Avatar
    12-12-2018
    :drink:
    38 replies | 1447 view(s)
  • Graeme McMahon's Avatar
    12-07-2018
    Dyslexica is a "lemprob"
    65 replies | 2978 view(s)
  • Graeme McMahon's Avatar
    11-25-2018
    From SeanKroll "is it about correct that stand-replacing bush fires wipe out eucs with a fire-return interval of about 80 years on average, so eucs haven't evolved a lot of CODIT capacity, as fire doesn't care about decay-stopping chemicals?" I can't really answer your question but I'll give my understanding. E. regnans (mountain ash) and E. delegatensis (alpine ash) are fire dependant species. They are there because of fire. Cool fires reduce ground material. Hot fires raise them to the ground. Wet gullies and slopes are less affected by the fire especially south and East facing. In very wet gullies especially up high it gives rise to non fire dependant ecosystems. They are essentially pockets of rainforest. The vague boundaries between them ebb and flow depending on the vigour of fire or extended wet. These sections are taped out of our coupe and not to be logged or burnt. We recognise the age of the bush from the fire that created it. 1939 was the very big fire, before that 26, 08 and one in the late 1890's. I can sometimes be felling 39 and strike a pocket of 26. It is that obvious. Since 39 the larger fires were 68, 83 and 09. There are many more fires throughout these times so it is difficult to place a time span on the cycle of fire. There are still some sections of mature ash forests and I took Gerry up to have a look. We have seen the best of them and they are ready to burn when the time is right. I was part of the filming crew for BBC at Wallaby Creek. One tree I climbed was 150' to the first dead peg and still about 6' diameter at that point. Logging those trees was stopped some time ago. The shame is that they burnt in 09. I donít suggest logging them all but it seemed a terrible waste of timber. It was always going to burn just a matter of when. Back to your question, being fire dependant I wonder if cool fires are in fact an important mechanism that exploits defect to the improvement of the gene pool. We may need to consider where CODIT fits in.
    164 replies | 17139 view(s)
  • Graeme McMahon's Avatar
    11-25-2018
    Thanks Burnham The difference between the forest management displays the different ecosystems. If we were to log our mature ash "regnans" bush, which we don't in Victoria, we would have to clear fell to mirror the natural normal cycles of rejuvenation to look after it. Regarding our bush, only 6% of the Crown land capable of being logged is available in Victoria. Every time the greens find an "endangered" possum in an eligible coupe it is removed from the 6% and not replaced. They have found so many colonies now they have passed the endangered threshold however they continue to move that goalpost as it suits. Some contractors here have been stopped work for up to 4 months because each coupe they are to move to, another possum is found. I assisted the ecologists to put up their cameras at one time and was privy to them changing the location to maximise the exclusion of adjoining coupes should a possum be sighted (so much for science and forest management).
    164 replies | 17139 view(s)
  • Graeme McMahon's Avatar
    11-24-2018
    The patch is almost done. A few to round up on the rocky knob and seed trees left as required. They are not what reseeds the coupe as natural seeds are already on the forest floor waiting for the burn. After the burn is when greens will take pics and exploit the lack of knowledge in the public to say we are wrecking the bush. For scale if you look close in about the middle you can see the orange excavator rounding up more of Sunday's wood. The face ran about 1/2 mile to North around the knob and a bit less to South the other side.
    164 replies | 17139 view(s)
  • Graeme McMahon's Avatar
    11-24-2018
    Good question Cory. Our alpine forests must be clear felled. In this way it mimmicks the cycles of mother nature. When a bush fire burns hot in our "mountain or alpine ash" bush it raises the lot to the ground then regenerates out of the ash bed created in a very high density. Over the next 60 years it naturaly thins and there is 60m tall trees ready to harvest again. By 240 years you've seen the best of it. We are still logging "39 regen", if you google 1939 fires and look at the area burnt in Victoria you will see what I mean. Sir David Attenborough said it best in the series "The Private Life of Plants", "The paradox of this fore Mixed species bush can have 3 generations of trees in it and can be select felled etc.
    164 replies | 17139 view(s)
  • Graeme McMahon's Avatar
    11-24-2018
    Quite right Stig, if you need and audience at work don't be a faller. Its personal.
    553 replies | 48737 view(s)
  • Graeme McMahon's Avatar
    11-24-2018
    Made a special effort Butch. Back from the bush, saw your post. Hi. Regards
    215 replies | 20984 view(s)
  • Graeme McMahon's Avatar
    11-21-2018
    Sorry for my absence. I have been busy (back logging as well) and just decided to have a look about on the Tree House. Have commented on another topic here tonight so I am trying. Can't believe it has been so long ago that Gerry came and stayed. We had such a good time getting about and doing. Logging and tree climbing have so much in common accross the Pacific. Looking at the images that Gerry captured reminds me of his time here so vividly. More importantly his naration of the pictures gives a quality story that only an extreemly competant tree person could. Many thanks Gerry. BTW turned 60 in Sep. Regards
    215 replies | 20984 view(s)
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