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Index of Subjects Hi Bev & All, With regard to selecting trees which will yield sound logs it is not as simple as you imagine---unless most trees are sound and the unsound are extreme. For example last fall I cut a Poplar which had started to lean into the road. It was sound at the butt, nothing strange in the first six feet or so but by 15 feet more than half of the cross-sectional area was riddled with rot and ants. Ants usually enter from below but these apparently entered by way of a fungal scar. Sometimes a Spruce will have a live top but all but the sapwood has a dry porous rot. Sometimes a Spruce will look OK but the last cm increment took about 30 years to form and older rings are not wide either. Such wood is brittle and is unsuitable for sawing. When I had some Horse loggers selectively cut one summer most trees had from two to 10 feet left as cull and sometimes the entire tree was left. Dave Webster, Kentville On 6/18/2019 10:25 PM, Bev Wigney wrote: > David and all, > > At Corbett-Dalhousie Lake where Swifts are being seen low over the > forest at intervals throughout the day -- seen by as many as 50 people > a week ago Sunday -- the "problem" is that the hardwood stand has many > very large Yellow Birch with cavities -- sort of typical of those > trees. Bernard Forsythe came out to the forest to look for nests and > tentatively identified a "possible" nest tree for the Swifts, but as > far as I know, this has not been confirmed and there are other very > suitable trees throughout the area. Unfortunately, on the part of the > same hardwood stand that was actually logged last autumn, quite a few > "hollow" or "cavity trees" were cut down -- and they are lying in the > mud out in the log yard -- although lately, I notice that they are > gradually being spirited away. They should have been left standing > where they would have provided nesting habitat for birds, flying > squirrels, porcupine, or other creatures. I expect eventually what > remains of the hollow trees will be hauled off to be chipped for > biomass for one of the mills. In any case, this is the "problem" with > not doing proper tree marking. You have operators guessing which > trees to fell and then finding they have cavities or a hollow area in > the trunk and they end up hauled out of the forest and tossed in the > cull log pile. If qualified tree markers were employed, as I am told > is the law on Crown land forest in Ontario, maybe there wouldn't be so > much "accidental destruction" of trees suitable for wildlife. > Unfortunately, that seems to be too complicated and high tech for the > forest industry here in Nova Scotia, so we continue to do things the > old "by guess and by golly" way. > > bev wigney > round hill, ns > > On 6/18/19, David Webster <dwebster@glinx.com> wrote: >> Hi Angus and All, >> >> Traffic on NatureNS has become overwhelming. >> >> If Swift activity or noteworthy nests were located in a block >> scheduled for cutting how large an island of trees would have to be left >> to avoid disturbance ? >> >> I am wondering if the potential conflict between logging and >> nesting activity could be neutralized by clear marking (by interested >> bird watchers) of nesting/roosting activity. >> >> DW, Kentville >> >> >> On 6/18/2019 1:02 PM, Angus MacLean wrote: >>> Great interview. Scott Leslie did an exceptional job stating the value >>> of this block of land and the importance of paying the same >>> consideration to other similar forest blocks due to be cut. However >>> lots of other aspects to consider including jobs, machinery used, etc. >>> Angus >>> >>> ------------------------------------------------------------------------ >>> *From:* naturens-owner@chebucto.ns.ca <naturens-owner@chebucto.ns.ca> >>> on behalf of Bev Wigney <bkwigney@gmail.com> >>> *Sent:* June 17, 2019 12:59 PM >>> *To:* naturens >>> *Subject:* [NatureNS] Good interview about nesting migratory birds on >>> Information Morning today >>> All, >>> >>> As many of you know, I've been quite involved for some time >>> (understatement) in trying to get LAF to acknowledge and pay serious >>> attention to ecology and conservation issues at Corbett-Dalhousie Lake >>> Forest here in Annapolis County. You will probably have read that >>> after the discovery of Chimney Swift activity at the forest, and >>> probable nesting in the huge Yellow Birch of that forest that have >>> numerous hollows and cavities -- and then other migratory species on >>> territory -- and the confirmation of at least one nest in the centre >>> of the forest -- a hold was finally called on operations late Friday >>> afternoon. (Sigh of relief -- for a little while, at least). >>> >>> Anyhow, if you've been following the news, you'll have heard that >>> certain individuals in the forestry industry have been stating that >>> logging crews are trained to watch for and avoid bird nests during >>> harvest operations, but there was an admission that sometimes nests >>> are probably destroyed - Information Morning interview last week. >>> >>> An interview was made on Friday -- with Scott Leslie -- who spent most >>> of last week out at Corbett Lake searching for Swift nesting trees and >>> other migratory bird nests. He must have been interviewed earlier on >>> Friday before the Minister's public announcement about the hold on >>> operations. I think many of you would find the interview with Scott >>> of interest. This link should take you directly to the podcast. >>> https://tunein.com/podcasts/Morning-Shows/Information-Morning-Nova-Scotia-p1781 >>> >>> bev wigney >>> Round Hill
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