next message in archive
no next message in thread
previous message in archive
previous message in thread
Index of Subjects
>>> Canadian Fo
This is a multipart message in MIME format.
------=_NextPart_000_000E_01D3D0C5.0D7B8590
Content-Type: text/plain;
charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Interesting discussion, David and Nick. If you=E2=80=99re not at the =
meeting, some on this list, including myself, who will be at that =
meeting will be better informed to raise such ideas.
=20
From: naturens-owner@chebucto.ns.ca <naturens-owner@chebucto.ns.ca> On =
Behalf Of Nick Hill
Sent: Tuesday, April 10, 2018 10:22
To: naturens@chebucto.ns.ca
Subject: Re: Re[2]: [NatureNS] Hemlock Woolly Adelgid Meeting
=20
=E2=80=8B "doing less can scarcely translate into doing more". YT DW
Think about it: Nature works best without us on a regular basis.
These are philosophical management issues (e.g. Muir versus Gifford =
Pinchot) but they have real diversity implications as well as time, =
effort and carbon costs. Your carbon analysis is wanting.=20
=20
Hill
=20
On Tue, Apr 10, 2018 at 10:08 AM, David <dwebster@glinx.com =
<mailto:dwebster@glinx.com> > wrote:
Hi Nick & All,
I agree that death of Hemlock stands is no cause for alarm, because =
plants tend to generate conditions more favorable for other species, but =
one should try to use any development to advantage; by intervention if =
applicable.
With respect to the following
"... obviously the less we do and the more we let succession regenerate =
a fast growth of new trees to mop up mineralized nutrients, tie up more =
carbon all amid the existing carbon in the old hemlock, the more we are =
doing our part for slowing climate change..."
doing less can scarcely translate into doing more.=20
The notion that forests just keep capturing carbon if left alone is =
wishful thinking. If Hemlock in the affected areas die then all of =
their carbon, trunk, root and branch will eventually be released as CO2. =
This will no doubt be a slow process because Hemlock is rot resistant, =
but release is certain.=20
ASSUMING DEATH OF MANY HEMLOCK IN A RELATIVELY PURE STAND---
I agree that succession, with rapid growth of young trees, will in =
time offset this release so it makes sense to act in ways which will =
enable this with minimum delay. The C/N ratio of wood is high so much =
dead wood implies a N shortage for decades. About half of this carbon is =
underground and beyond practicable removal. But above ground wood can =
readily be removed so, where feasible, it makes sense to use it. Cut the =
dead trees, chunk, split and pile in the woods with bark removed and use =
for firewood locally in later years as substitute for fossil fuels. [The =
bark of Hemlock is readily removed when split.] Every stick of firewood, =
burned for heat, can represent that much less fossil fuel burned for =
that purpose.
An you indicate, when many trees of a stand die in a region subject =
to leaching one may expect loss of mobile nutrients as decomposition of =
soil organic components continues in the absence of uptake. A =
scattering of seeds, such as Buckthorn, would minimize this.=20
If the affected Hemlock are in relatively pure stands then selective =
removal trees most affected would make sense.
Yt, DW, Kentville
=20
------ Original Message ------
From: "Nick Hill" <fernhillns@gmail.com <mailto:fernhillns@gmail.com> >
To: naturens@chebucto.ns.ca <mailto:naturens@chebucto.ns.ca>=20
Sent: 4/10/2018 6:57:54 AM
Subject: Re: [NatureNS] Hemlock Woolly Adelgid Meeting
=20
Condolences, John. Hemlock is one of our most beautiful shade tolerant =
long lived trees and it sets the structure of many ravines, riparian =
forests and old growths.=20
I'd advise caution, however In adopting either a sanitary, a chemical or =
a treatment that uses non native biocontrols.
Wild forest management is the proper job of a forest ecologist who sees =
structure, forest successional dynamics and evolution. The sky is not =
falling; as I've pointed out, other areas have gone through this and =
forests change and in some (many if we read the West Virginia phd) =
affected forests, hemlock persists and relinquishes some of its =
dominance to cherry birch, the species determined by availability in the =
area. Here it will probably be yellow birch and red spruce but we will =
see.
=20
Active management makes humans and particularly those in mandated =
organizations feel they are not being negligent ..due diligence =
etc...but forests change and we would do best for nature to let it =
change and only intervene where we think there are regeneration issues. =
It's a good time to collect tree seeds, start nursery stock of yellow =
birch and red spruce hobble bush mountain maple.
=20
The public has lost its forest commons as we cede the forest to =
companies that clearcut. If we care about forests and nature, let the =
forests be wild...connect up wild areas onto corridors...but don't treat =
wild forest like gardens or we will be mimicking the clear cutting =
mentality at work on most of our forest commons.=20
=20
Let's have some faith in nature and not think it's helpless without us. =
Holding back and not rushing to active management will be hard for =
people in government and conservation organizations but succession can =
handle what we think is a crisis. How it handles it is the beauty and =
wisdom of nature.
=20
I haven't got into carbon implications but obviously the less we do and =
the more we let succession regenerate a fast growth of new trees to mop =
up mineralized nutrients, tie up more carbon all amid the existing =
carbon in the old hemlock, the more we are doing our part for slowing =
climate change...the more we remove and hack and burn...
=20
Lastly, we are in, undeniably, a time of vegetation change brought n by =
climate change. Such forest changes will be opportunities for =
biodiversity and we will witness exciting positive changes.
=20
Nick
=20
=20
=20
On Tue, Apr 10, 2018, 12:46 AM John Kearney, =
<john.kearney@ns.sympatico.ca <mailto:john.kearney@ns.sympatico.ca> > =
wrote:
Hi All,
Our hemlock trees are in serious trouble. The culprit is an aphid =
relative, the hemlock woolly adelgid, and currently, southwest Nova =
Scotia is the most at threat.
The Tusket River Environmental Protection Association (TREPA) will be =
sponsoring a talk by Ron Neville, Plant Health Survey Biologist of the =
Canadian Food Inspection Agency, at the Yarmouth County Museum and =
Archives, 22 Collins Street, Yarmouth =
<https://maps.google.com/?q=3D22+Collins+Street,+Yarmouth&entry=3Dgmail&s=
ource=3Dg> , on Tuesday, April 10th, at 7:00 PM. All are welcome.
=20
=20
--=20
Dr. N.M.Hill
Fern Hill Institute of Plant Conservation
424 Bentley Road, Berwick, NS, B0P 1E0
phone 902-698-0416
------=_NextPart_000_000E_01D3D0C5.0D7B8590
Content-Type: text/html;
charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
<html xmlns:o=3D"urn:schemas-microsoft-com:office:office" =
xmlns:w=3D"urn:schemas-microsoft-com:office:word" =
xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" =
xmlns=3D"http://www.w3.org/TR/REC-html40"><head><meta =
http-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta =
name=3DGenerator content=3D"Microsoft Word 15 (filtered =
medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle18
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle19
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style></head><body lang=3DEN-CA link=3Dblue vlink=3Dpurple><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>Interesting discussion, David and =
Nick. If you=E2=80=99re not at the meeting, some on this list, including =
myself, who will be at that meeting will be better informed to raise =
such ideas.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><b><span lang=3DEN-US>From:</span></b><span =
lang=3DEN-US> naturens-owner@chebucto.ns.ca =
<naturens-owner@chebucto.ns.ca> <b>On Behalf Of </b>Nick =
Hill<br><b>Sent:</b> Tuesday, April 10, 2018 10:22<br><b>To:</b> =
naturens@chebucto.ns.ca<br><b>Subject:</b> Re: Re[2]: [NatureNS] Hemlock =
Woolly Adelgid Meeting<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p =
class=3DMsoNormal><span style=3D'font-size:18.0pt'>=E2=80=8B =
</span><span =
style=3D'font-size:9.5pt;font-family:"Arial",sans-serif;color:#222222;bac=
kground:white'> "doing less can scarcely translate into doing =
more". YT DW</span><span =
style=3D'font-size:18.0pt'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:9.5pt;font-family:"Arial",sans-serif;color:#222222;bac=
kground:white'>Think about it: </span><span =
style=3D'font-size:9.5pt'>Nature works best without us on a regular =
basis.</span><span =
style=3D'font-size:18.0pt'><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal>These are philosophical management issues (e.g. Muir =
versus Gifford Pinchot) but they have real diversity implications as =
well as time, effort and carbon costs. <span =
style=3D'font-size:9.5pt;font-family:"Arial",sans-serif;color:#222222;bac=
kground:white'>Your carbon analysis is wanting.</span> =
<o:p></o:p></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:18.0pt'><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal>Hill<o:p></o:p></p></div></div><div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>On Tue, =
Apr 10, 2018 at 10:08 AM, David <<a =
href=3D"mailto:dwebster@glinx.com" =
target=3D"_blank">dwebster@glinx.com</a>> =
wrote:<o:p></o:p></p><blockquote style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p =
class=3DMsoNormal>Hi Nick & All,<o:p></o:p></p></div><div><p =
class=3DMsoNormal> I agree that death of Hemlock stands is =
no cause for alarm, because plants tend to generate conditions more =
favorable for other species, but one should try to use any development =
to advantage; by intervention if =
applicable.<o:p></o:p></p></div><div><div =
id=3D"m_-7228164361706606762x4537a7d7b50a4f9d83dcca752644bfaf"><div><div>=
<p class=3DMsoNormal> With respect to the =
following<o:p></o:p></p></div><div><p class=3DMsoNormal>"... =
obviously the less we do and the more we let succession regenerate a =
fast growth of new trees to mop up mineralized nutrients, tie up more =
carbon all amid the existing carbon in the old hemlock, the more we are =
doing our part for slowing climate =
change..."<o:p></o:p></p></div><div><p class=3DMsoNormal> =
doing less can scarcely translate into doing =
more. <o:p></o:p></p></div><div><p =
class=3DMsoNormal> The notion that forests just =
keep capturing carbon if left alone is wishful thinking. If =
Hemlock in the affected areas die then all of their carbon, trunk, root =
and branch will eventually be released as CO2. This will no doubt be a =
slow process because Hemlock is rot resistant, but release is =
certain. <o:p></o:p></p></div><div><p class=3DMsoNormal>ASSUMING =
DEATH OF MANY HEMLOCK IN A RELATIVELY PURE =
STAND---<o:p></o:p></p></div><div><p class=3DMsoNormal> I =
agree that succession, with rapid growth of young trees, will in time =
offset this release so it makes sense to act in ways which will enable =
this with minimum delay. The C/N ratio of wood is high so much dead wood =
implies a N shortage for decades. About half of this carbon is =
underground and beyond practicable removal. But above ground wood can =
readily be removed so, where feasible, it makes sense to use it. Cut the =
dead trees, chunk, split and pile in the woods with bark removed and use =
for firewood locally in later years as substitute for fossil fuels. [The =
bark of Hemlock is readily removed when split.] Every stick of firewood, =
burned for heat, can represent that much less fossil fuel burned for =
that purpose.<o:p></o:p></p></div><div><p class=3DMsoNormal> =
An you indicate, when many trees of a stand die in a region =
subject to leaching one may expect loss of mobile nutrients as =
decomposition of soil organic components continues in the absence =
of uptake. A scattering of seeds, such as Buckthorn, would minimize =
this. <o:p></o:p></p></div><div><p class=3DMsoNormal> =
If the affected Hemlock are in relatively pure stands then selective =
removal trees most affected would make =
sense.<o:p></o:p></p></div><div><p class=3DMsoNormal>Yt, DW, =
Kentville<o:p></o:p></p></div></div></div></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>------ Original Message =
------<o:p></o:p></p></div><div><p class=3DMsoNormal>From: "Nick =
Hill" <<a href=3D"mailto:fernhillns@gmail.com" =
target=3D"_blank">fernhillns@gmail.com</a>><o:p></o:p></p></div><div><=
p class=3DMsoNormal>To: <a href=3D"mailto:naturens@chebucto.ns.ca" =
target=3D"_blank">naturens@chebucto.ns.ca</a><o:p></o:p></p></div><div><p=
class=3DMsoNormal>Sent: 4/10/2018 6:57:54 =
AM<o:p></o:p></p></div><div><p class=3DMsoNormal>Subject: Re: [NatureNS] =
Hemlock Woolly Adelgid Meeting<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><div><div =
id=3D"m_-7228164361706606762xb34b1bfbdc334b9"><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p =
class=3DMsoNormal>Condolences, John. Hemlock is one of our most =
beautiful shade tolerant long lived trees and it sets the structure of =
many ravines, riparian forests and old =
growths. <o:p></o:p></p><div><p class=3DMsoNormal>I'd advise =
caution, however In adopting either a sanitary, a chemical or a =
treatment that uses non native biocontrols.<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Wild forest management is the proper job of a forest =
ecologist who sees structure, forest successional dynamics and =
evolution. The sky is not falling; as I've pointed out, other areas have =
gone through this and forests change and in some (many if we read the =
West Virginia phd) affected forests, hemlock persists and =
relinquishes some of its dominance to cherry birch, the species =
determined by availability in the area. Here it will probably be yellow =
birch and red spruce but we will see.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Active management makes humans and particularly those =
in mandated organizations feel they are not being negligent ..due =
diligence etc...but forests change and we would do best for nature to =
let it change and only intervene where we think there are =
regeneration issues. It's a good time to collect tree seeds, start =
nursery stock of yellow birch and red spruce hobble bush mountain =
maple.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>The public has lost its forest commons as we cede the =
forest to companies that clearcut. If we care about forests and nature, =
let the forests be wild...connect up wild areas onto corridors...but =
don't treat wild forest like gardens or we will be mimicking the clear =
cutting mentality at work on most of our forest =
commons. <o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Let's have some faith in nature and not think it's =
helpless without us. Holding back and not rushing to active management =
will be hard for people in government and conservation organizations but =
succession can handle what we think is a crisis. How it handles it is =
the beauty and wisdom of nature.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I =
haven't got into carbon implications but obviously the less we do and =
the more we let succession regenerate a fast growth of new trees to mop =
up mineralized nutrients, tie up more carbon all amid the existing =
carbon in the old hemlock, the more we are doing our part for slowing =
climate change...the more we remove and hack and =
burn...<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Lastly, we are in, undeniably, a time of vegetation =
change brought n by climate change. Such forest changes will be =
opportunities for biodiversity and we will witness exciting positive =
changes.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Nick<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Tue, Apr 10, 2018, 12:46 AM John Kearney, <<a =
href=3D"mailto:john.kearney@ns.sympatico.ca" =
target=3D"_blank">john.kearney@ns.sympatico.ca</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hi =
All,<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Our hemlock =
trees are in serious trouble. The culprit is an aphid relative, =
the hemlock woolly adelgid, and currently, southwest Nova Scotia is the =
most at threat.<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The Tusket =
River Environmental Protection Association (TREPA) will be sponsoring a =
talk by Ron Neville, Plant Health Survey Biologist of the Canadian Food =
Inspection Agency, at the Yarmouth County Museum and Archives, <a =
href=3D"https://maps.google.com/?q=3D22+Collins+Street,+Yarmouth&entr=
y=3Dgmail&source=3Dg">22 Collins Street, Yarmouth</a>, on Tuesday, =
April 10<sup>th</sup>, at 7:00 PM. All are welcome.<o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div></div></blockquote></div></blockquote></div></div></div></=
div></blockquote></div><p class=3DMsoNormal><br><br =
clear=3Dall><o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><p class=3DMsoNormal>-- =
<o:p></o:p></p><div><p class=3DMsoNormal>Dr. N.M.Hill<br>Fern Hill =
Institute of Plant Conservation<br>424 Bentley Road, Berwick, NS, B0P =
1E0<br><br>phone =
902-698-0416<o:p></o:p></p></div></div></div></body></html>
------=_NextPart_000_000E_01D3D0C5.0D7B8590--
next message in archive
no next message in thread
previous message in archive
previous message in thread
Index of Subjects