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>> >>So --f40304365e0ec6174b056b7eab38 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I think this is one of the deficiencies in the way we value things. We are not looking to science and following through logic of testable hypotheses and reduced consequences. Rather we say how does CFIA regard this...NCC..and we don't think these are second hand positions that may relate to science or may relate to how things are done elsewhere or to our fear of the exotic There are various ecologists looking at how biological communities are put together and they come up with assembly rules and limiting dissimilarities of species...how dissimilar do spp need to be to find a new niche to squeeze into the community. Whether a species comes into a new community could be understood and every species at one stage was exotic to Nova Scotia. The mixing up of species will continue and the only way we have of maintaining the structure of biological communities is to maintain them and reduce the wholesale disturbance that now throws open a community to opportunistic species. It isn't whether a species is ours or theirs...good or bad...it's only a question of whether we are protecting evological processes. We have abandoned agriculture and two ecologically valuable rosas are filling a succession gap. We are fortunate that these are here to repair our disturbances. If we doubt It, we do removal experiments to see whether things are better if succession had waited another decade for the arrival of a slower growing native species. We need to look to experiment not barcodes saying alien or native. On Sat, May 5, 2018, 6:50 PM David&Jane Schlosberg, < dschlosb-g@ns.sympatico.ca> wrote: > David, your posts are always interesting. I consulted Papa Google, and i= t > seems the glossy buckthorn is damned by a great many people=E2=80=94Natur= e > Conservancy, Tree Canada, et al. Could it be that this plant is damaging > to the ecosystem in climates like Ontario, but not such a problem in Nova > Scotia? Your comments have helped me appreciate the complexity of > ecology. It=E2=80=99s worse than middle eastern politics. =F0=9F=98=89 > > > > Jane Schlosberg > > > > *From:* naturens-owner@chebucto.ns.ca <naturens-owner@chebucto.ns.ca> *On > Behalf Of *David > *Sent:* May 5, 2018 5:09 PM > *To:* naturens@chebucto.ns.ca > *Subject:* Glossy Buckthorn was :Re[4]: [NatureNS] Dog-strangling vine in > Nova Scotia > > > > Hi Nick & All, > > Glossy Buckthorn IMHO is a positive for thinned woodland; thinned by > windfall, tree death or cutting. Provided seeds are present it becomes > established and grows rapidly and thus captures many mobile nutrients whi= ch > might otherwise be lost. It discourages the gross overstocking by Ash whi= ch > otherwise become a thicket of runts. Buckthorn, unless held up by other > shrubs typically grow lanky, flop over and die. The odd one survives the > floppy stage and generates a nurse canopy for real trees which typically > take longer to get established. My once Buckthorn thickets are now largel= y > Buckthorn fragments. > > By arrangement I would be delighted to walk anyone interested through > some of the patches which remain. It spreads rapidly because [gasp] birds > mob these shrubs in season. But it does not "invade" small openings in th= e > canopy so is absent or very sparse in most of my woodlot. > > > > Frankly I think the notion that it is undesirable is founded upon > prejudice and nothing else. > > > > Yt, DW, Kentville > > > > ------ Original Message ------ > > From: "Nick Hill" <fernhillns@gmail.com> > > To: naturens@chebucto.ns.ca > > Sent: 5/5/2018 4:37:04 PM > > Subject: Re: Re[2]: [NatureNS] Dog-strangling vine in Nova Scotia > > > > Calm...i lived in southeast Kentucky > > We had kudzu vine that swallowed abandoned houses...crossex roads via > phone lines > > Scary but before we call Jesus and Mary we notice it did not enter intact > woodland and was restricted to about 30m from the roaside. > > We do have a couple of plants that are 9f concern because they do get int= o > fairly intact ecosystems. I'd put glossy buckthorn at the top of the list > and then in terms of potential for harm given reports from elsewhere, I'd > be concerned about the spread of garlic mustard. > > > > Glossy? It's naturalized now and is part of swamps and early forest > succession. It's not the end of the world...its green it's a laxative for > birds and it fits into a red maple alder tudspuck sedge swamp with no > apparent diversity or community function effects. > > > > Fight clearcutting and our inability to get any marine protected areas fo= r > the eastern shore because we don't want any impingement on rockweed harve= st > or oil and gas development. > > > > Great name! > > > > On Sat, May 5, 2018, 1:21 PM David, <dwebster@glinx.com> wrote: > > Hi Dave P., Bev and all. > What an unfortunate name to be saddled with. Just this side of > 'wanted dead or alive'. I wish to add to Bev's comments about the > abundance of 'invasives'. > As a general rule of thumb animals and plants eventually generate > conditions which threaten their well being/survival. And those which > prevail may do so by "invading" fresh territory which is not loaded with > diseases or parasites. > Consequently, if something is threatened the best recovery remedy may > be to move a starter kit of it elsewhere. Before lighting long distance > flame throwers think about this in general terms. What is the better > choice 1) act to preserve a flora and fauna which is free of "invasive" > species or 2) act to enable survival of species which may be endangered > ? > Yt, DW. Kentville > > ------ Original Message ------ > From: "Bev Wigney" <bkwigney@gmail.com> > To: naturens@chebucto.ns.ca > Sent: 5/5/2018 9:35:44 AM > Subject: Re: [NatureNS] Dog-strangling vine in Nova Scotia > > >Bad news if Dog-strangling vine (DSV) is here as it is quite a scourge > >in eastern Ontario. Everyone struggles to keep it out of their gardens > >and it grows rampant on vacant properties or even in woodlands. I was > >in Ontario all last summer and went for walks in several places around > >Ottawa and found it growing profusely everywhere. Fred Schueler may > >comment on the prevalence there and perhaps here as well. Another up > >and comer I saw there spreading out from what might have been its > >Ground Zero in an abandoned industrial pa