[NatureNS] Re Red Herring & Forestry

From: Patrick Kelly <Patrick.Kelly@Dal.Ca>
To: "<naturens@chebucto.ns.ca>" <naturens@chebucto.ns.ca>
Thread-Topic: [NatureNS] Re Red Herring & Forestry
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Date: Tue, 12 Jan 2016 14:03:24 +0000
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Hi all:

One thing that might be of interested was that several years ago (not sure =
of the exact date)  Dr. Paul Arp had prepared a report on the nutrient cont=
ent of the soils of the areas of crown land in the western areas of the pro=
vince and the soils ability to support future forestry. That report was rec=
eived and has not been released to the public. Early in 2015, the Federatio=
n of Nova Scotia Naturalists was going to use a freedom of information requ=
est to get access to that report. During that process it was found that a r=
eported had already gone through the process, but that the report had been =
so heavily redacted as to be useless.

So here we have a report on public land, paid for a produced by the public =
and yet we cannot see what is in it. That alone tells me that things can't =
be good, otherwise the government, you would think, would be more than happ=
y to show documentation that their existing policies are fine=85

Pat


On Jan 11, 2016, at 7:21 PM, David & Alison Webster wrote:

Hi Nick, David P. & All                                        Jan 11, 2016
  I would be cautious about betting the farm on Ca depletion being a major =
factor.
One telling passage in  the Noseworthy thesis is "To what extent the appare=
nt luxurious consumption of Ca is beneficial to tree growth remains to be e=
xplored..."
(p. 194).
  This is a very complex model as it stands but, so far as I can tell, make=
s no allowance for consumption of H+ by weathering of soil minerals so the =
effect of acidic ppt. may be overstated to some degree. And, so far as I ca=
n see, it is a balance sheet and consequently does not allow for possible r=
esponses of soils or trees when inputs or outputs change.
  Phosphorus was excluded unfortunately. But as the model stands it is I th=
ink an excellent launching pad from which to define questions that need tes=
ting by experiment.
  A narrow band of basic soils appears on both sides of most waterways, in =
the area most intensively studied (Kejimkujik National Park) suggesting tha=
t the acidity of soil water, as it passes through acidic soil upslope, is s=
lightly neutralized (weathering effect ?). Whether these bands were a predi=
ction of the model or an observation of soil survey I am unsure.
  One feature of large expensive equipment is that it will tend to be used =
regardless of soil conditions. A few passes over soil when it is sufficient=
ly wet to be compacted may result in damage which will take decades to reve=
rse. If harvesting by large equipment does in fact reduce growth of the nex=
t generation of trees then it could be due to changes in soil porosity at 4=
0 cm or beyond and not nutrient removal.
  I must become less involved with this question because in less than a mon=
th I have blown a year's allotment of discretionary time and trying to herd=
 cats up a waterfall is not an efficient use of scarce time.

Yt, DW




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Patrick Kelly

Director of Computer Facilities

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Faculty of Architecture and Planning

Dalhousie University

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MAIL                                   COURIER

PO Box 15000                           5410 Spring Garden Road

Halifax, Nova Scotia B3H 4R2           Halifax, Nova Scotia

Canada                                 Canada

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Phone:(902) 494-3294    FAX:(902) 423-6672   E-mail:patrick.kelly@dal.ca

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Hi all:
<div><br>
</div>
<div>One thing that might be of interested was that several years ago (not =
sure of the exact date) &nbsp;Dr. Paul Arp had prepared a report on the nut=
rient content of the soils of the areas of crown land in the western areas =
of the province and the soils ability
 to support future forestry.&nbsp;That report was received and has not been=
 released to the public. Early in 2015, the Federation of Nova Scotia Natur=
alists was going to use a freedom of information request to get access to t=
hat report. During that process it was
 found that a reported had already gone through the process, but that the r=
eport had been so heavily redacted as to be useless.
<div><br>
</div>
<div>So here we have a report on public land, paid for a produced by the pu=
blic and yet we cannot see what is in it. That alone tells me that things c=
an't be good, otherwise the government, you would think, would be more than=
 happy to show documentation that
 their existing policies are fine=85</div>
<div><br>
</div>
<div>Pat</div>
<div><br>
</div>
<div><br>
<div>
<div>On Jan 11, 2016, at 7:21 PM, David &amp; Alison Webster wrote:</div>
<br class=3D"Apple-interchange-newline">
<blockquote type=3D"cite">
<div>Hi Nick, David P. &amp; All &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&