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> Find out more at 7:00 P.M. Tuesday, March 13. The Tusket River This is a multipart message in MIME format. ------=_NextPart_000_000F_01D3B066.8CEAB0A0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable There=E2=80=99s another point worth discussing: if and possibly how = lessons from the red spruce saga could/ should be applied (or not!). =20 From: naturens-owner@chebucto.ns.ca = [mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Nick Hill Sent: February 27, 2018 3:14 PM To: naturens@chebucto.ns.ca Subject: RE: [NatureNS] Notice of Meeting on Hemlock Woolly Adelgid =20 I agree, John. I too am leery about introducing yet another exotic to combat an exotic. The sanitary approach is also worrisome as that approach leaves no = organic no food for woodpeckers and doesn't let the tree determine its = fate. I just got back from a walk where I showed my sister from UK = healthy beech and then we found a large slightly chancred beech that had = overgrown a miserable chancred individual that had died. I had to think = about the possibility of differential susceptibility and evolution of = resistance. We need to give the hemlock that chance. And then there was the American Chestnut and its loss and replacement by = chestnut oak. =20 Yes. We can do more than one thing and that's good. But I may be averse = to any agency that has the authority because of its name to come and cut = out my hemlock. They did this with the red spruce with not much = ecological understanding. Nick =20 On Feb 27, 2018 2:26 PM, "John and Nhung" <nhungjohn@eastlink.ca> wrote: Good points, and I=E2=80=99d be uncomfortable with some proposed = interventions. Introduction of any exotic, for instance, has = unpredictable consequences. =20 I don=E2=80=99t think there=E2=80=99s any necessary conflict between = attempts to preserve hemlock and other sustainable forest management = initiatives. For instance, I keep wondering about seed banks, which may = or not be a good idea =E2=80=A6 =20 Hope you=E2=80=99re gonna catch some of the sessions, Nick. The = MTRI-organized ones are probably more geographically = conveniently-located. You could contribute substantively to the = discussions! =20 From: naturens-owner@chebucto.ns.ca = [mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Nick Hill Sent: February 27, 2018 12:17 PM To: naturens@chebucto.ns.ca Subject: Re: [NatureNS] Notice of Meeting on Hemlock Woolly Adelgid =20 Hi John and John I don't doubt that the woolly adelgid will kill hemlock trees and that = is change and unwelcome. Let us first put it in a North American context with climate change and = atmospheric N deposition. We can research the impact that has occurred where the pest has moved = through from Virginia through New England. And then we can look at stand vulnerability factors. We stand to lose = trees and some stands. The outbreaks will be heterogenous: stands = receiving more N in SW Nova could be more affected. Cool ravines should = be less affected. Stands near the coast may be less affected because = there has been less temperature change over the past 30 y.=20 =20
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