[NatureNS] re slacks - when do they refill?

References: <002DE2B363D349EA9AAF88944F7FFE2F@BOB>
From: "Jim (James W.) Wolford" <jimwolford@eastlink.ca>
Date: Sun, 25 May 2014 15:06:22 -0300
To: NatureNS <naturens@chebucto.ns.ca>
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As most of you know, Bob Bancroft lives very close to Pomquet Beach  
Provincial Park, where there is a series of these slacks as you drive  
to or from the beach access.  Jim in Wolfville

Begin forwarded message:

> From: Robert P Bancroft <wild1@eastlink.ca>
> Date: May 25, 2014 10:36:28 AM ADT
> To: "Jim (James W.) Wolford" <jimwolford@eastlink.ca>
> Subject: Re: slacks - when do they refill?
>
> JIm,
>
> Sorry - terribly busy here. Those slacks hold water fresh-enough  
> for deer to drink. I have a longer story dating back to the 1960's  
> but not right now. I think Nancy Dowd  and Randy have it about right.
>
> Best,
> Bob
> ----- Original Message -----
> From: Jim (James W.) Wolford
> To: Bob Bancroft
> Sent: Friday, May 23, 2014 3:30 PM
> Subject: slacks - when do they refill?
>
> Bob, I think I forwarded one message on this earlier, but I have a  
> bunch more if you care to see them?  Cheers from Jim, and looking  
> forward to a week from today at the Gaelic College!
>
> Begin forwarded message:
>
>> From: Randy Lauff <randy.lauff@gmail.com>
>> Date: May 23, 2014 3:14:29 PM ADT
>> To: NatureNS <naturens@chebucto.ns.ca>
>> Subject: Re: [NatureNS] slacks - when do they refill?
>> Reply-To: naturens@chebucto.ns.ca
>>
>> I have posted a picture of the slack here: http://people.stfx.ca/ 
>> rlauff/307/PomquetSlack.jpg. One person I asked locally thought  
>> that the slack filled up again with the autumn rains. That's  
>> probably right, but I still can't discount snow melt accompanied  
>> by spring rain. I guess I'll find out this year.
>>
>> Randy
>>
>> _________________________________
>> RF Lauff
>> Way in the boonies of
>> Antigonish County, NS.
>>
>>
>> On 21 May 2014 18:08, nancy dowd <nancypdowd@gmail.com> wrote:
>> Maybe it is just evaporation. Water accumulates in the leaf-lined  
>> slacks in the Spring (rain and melt) and eventually warming temps  
>> and strong sun evaporate it until it is empty. Over the summer  
>> heat and sun manage to keep up with the rainfall not allowing it  
>> to accumulate for any length of time (it must be hot down in those  
>> slacks). Then once the cooler temps and less intense sun of Fall  
>> take over rainwater can accumulate once again in the slacks until  
>> it freezes.
>>
>> Just a guess.
>>
>> Nancy
>> On 2014-05-21, at 4:39 PM, David & Alison Webster  
>> <dwebster@glinx.com> wrote:
>>
>> > Hi Randy & All,
>> >     I had imagined these dunes to be bare sand. With tree cover  
>> on the peaks and presumably none on the slacks there is another  
>> effect that will increase effective ppt in the slacks; sublimation  
>> on the tree canopy in calm weather and selective snow accumulation  
>> in treeless areas (roads, glades, etc) in windy weather due to  
>> less turbulence and less speed over glades..
>> > Yt, DW
>> > ----- Original Message -----
>> > From: Randy Lauff
>> > To: NatureNS
>> > Sent: Wednesday, May 21, 2014 9:57 AM
>> > Subject: Re: [NatureNS] slacks - when do they refill?
>> >
>> > Thanks folks,
>> >
>> > I haven't been there in winter, despite my being in NS now for  
>> over 20 years.
>> >
>> > Here's the landscape picture though. Picture an accordion,  
>> partly open lying on its back. The bellows represent the dune  
>> system at Pomquet, there are peaks and troughs (slacks), and  
>> precious little other elevations going on. At the slack in  
>> question, the surrounding peaks of the dunes are dominated by  
>> white pine and oak, with other trees as well.
>> >
>> > Fred asked, if the dunes are sandy, how are they holding water  
>> in the first place? Basically, I think there is leaf litter which  
>> may be accumulating in the slack to slow the water seepage.  
>> Further to Anne's email, the slack in question is well back from  
>> the salt water, I suspect there is no salt to speak of in that  
>> water. Mosquitoes are there in the billions, peepers are  
>> deafening, both suggesting fresh water (though I realize a few  
>> mosquitoes can tolerate brackish water).
>> >
>> > Randy
>> >
>> > _________________________________
>> > RF Lauff
>> > Way in the boonies of
>> > Antigonish County, NS.
>> >
>> >
>> > On 20 May 2014 18:24, David & Alison Webster<dwebster@glinx.com>  
>> wrote:
>> > Hi Randy & All,                            May 20, 2014
>> >     I don't have a clear picture of the topography, either dune  
>> or inland, but one possible source of water in the slacks is  
>> drifting of snow into pools.
>> >
>> >     In woods south of Kentville, where I used to walk in winter,  
>> pools in woodland cradlehollows of swampy sites never froze. With  
>> 2'-3' of snow on the ground, the air cone was typically about ~1'  
>> across at snow level and 4" across at water level. Even at -20o C,  
>> with heavy snowfall, 60 mph winds and drifting snow  there would  
>> be no hint of ice. From the viewpoint of ppt per unit area these  
>> cones act as black holes; snow blows into them but, soon being  
>> water, can not escape. These air cones were absent when snow was  
>> not deep enough to act as a good insulator. With sufficient snow  
>> cover drifted ~level over the swamp, the soil at the base of  
>> cradlehollows would warm sufficiently by ground heat from below to  
>> melt overlying snow and eventually generate one of these air cones.
>> >
>> >     If these pools were sufficiently above the water table then  
>> they would tend to be transient but, in most soils (given  
>> sufficient iron and decomposable organic matter), infiltration  
>> rate at constant head will gradually slow due to formation of a  
>> local iron pan over decades or centuries. This effect interested  
>> me because ortstein is sometimes very scattered; patches 3-4' wide  
>> and 10-15' apart and these pools that collect below air cones  
>> could account for this. Also prolonged wetting will slake any soil  
>> aggregates and decrease infiltration rate.
>> >
>> >     Getting back to dunes, in the idealized case of parallel  
>> linear dunes and linear slacks and  in deep snow conditions I  
>> would expect linear narrow pools at the base of linear narrow  
>> trenches in the snow; V-shaped deposits of ortstein if dunes are  
>> stable and not advancing.
>> >
>> >     Have you been there in winter and if so does any of this  
>> register ?
>> > Yt, Dave Webster, Kentville
>> > ----- Original Message -----
>> > From: Randy Lauff
>> > To: NatureNS
>> > Sent: Tuesday, May 20, 2014 4:20 PM
>> > Subject: Re: [NatureNS] slacks - when do they refill?
>> >
>> > Thanks Fred, but in a dune system, wouldn't that mean that the  
>> slacks would be less than half full with water? These are sand  
>> dunes...very porous, so I'm suspecting water leaching in from the  
>> hills of the dunes into the slacks just couldn't fill them. This  
>> is unlike the condition in vernal pools where there can be ample  
>> elevation around from which water could leach in to the pool area.  
>> I'm thinking there has to be a significant rain or snow fall to  
>> fill them.
>> >
>> > Randy
>> >
>> > _________________________________
>> > RF Lauff
>> > Way in the boonies of
>> > Antigonish County, NS.
>> >
>> >
>> > On 20 May 2014 15:30, Fred Schueler <bckcdb@istar.ca>wrote:
>> > On 5/20/2014 2:18 PM, Randy Lauff wrote:
>> >
>> > Between several of the dunes at Pomquet Beach, Ant. Co., the  
>> slacks (the
>> > troughs between dune crests) fill with water, but by summer are  
>> dry. I
>> > guess I've just never been there at the right time to see when  
>> they fill
>> > again...it can't be just from winter melt water, since the  
>> slacks are
>> > almost full (and snow melts to about 10% its volume as water).  
>> Do the
>> > autumn rains fill them again, or the spring rains? Or is it a
>> > case-by-case scenario, which I'd just have to monitor?
>> >
>> > * I had the same thought about vernal pools at the CARCNET  
>> meeting at Quebec City in 1999, during a presentation on Marbled  
>> Salamanders, which come down into the vernal pools to lay their  
>> eggs on the dry pondbed in the fall, and stay with them all  
>> winter. It turns out that the vernal pools fill from the water  
>> table, as one would think sandy dunes would. And yes, I've been  
>> monitoring water level in our local Wood Frog ponds, fall and late  
>> winter, ever since then.
>> >
>> > fred.
>> > ------------------------------------------------------------
>> >          Frederick W. Schueler & Aleta Karstad
>> > Daily Paintings -http://karstaddailypaintings.blogspot.com/
>> > Vulnerable Watersheds -http://vulnerablewaters.blogspot.ca/
>> >    study our books -http://pinicola.ca/books/index.htm
>> >          RR#2 Bishops Mills, Ontario, Canada K0G 1T0
>> >   on the Smiths Falls Limestone Plain 44* 52'N 75* 42'W
>> >    (613)258-3107 <bckcdb atistar.ca> http://pinicola.ca/
>> > ------------------------------------------------------------
>> >
>> > No virus found in this message.
>> > Checked by AVG - www.avg.com
>> > Version: 2014.0.4577 / Virus Database: 3950/7502 - Release Date:  
>> 05/15/14
>> >
>> >
>> > No virus found in this message.
>> > Checked by AVG - www.avg.com
>> > Version: 2014.0.4577 / Virus Database: 3950/7529 - Release Date:  
>> 05/20/14
>> >
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>
>
>
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<html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; ">
As most of you know, Bob Bancroft lives very close to Pomquet Beach =
Provincial Park, where there is a series of these slacks as you drive to =
or from the beach access. &nbsp;Jim in Wolfville<br><div><br><div>Begin =
forwarded message:</div><br =
class=3D"Apple-interchange-newline"><blockquote type=3D"cite"><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><font face=3D"Helvetica" size=3D"3" color=3D"#000000" =
style=3D"font: 12.0px Helvetica; color: #000000"><b>From: =
</b></font><font face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px =
Helvetica">Robert P Bancroft &lt;<a =
href=3D"mailto:wild1@eastlink.ca">wild1@eastlink.ca</a>&gt;</font></div><d=
iv style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><font face=3D"Helvetica" size=3D"3" color=3D"#000000" =
style=3D"font: 12.0px Helvetica; color: #000000"><b>Date: =
</b></font><font face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px =
Helvetica">May 25, 2014 10:36:28 AM ADT</font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><font face=3D"Helvetica" size=3D"3" color=3D"#000000" =
style=3D"font: 12.0px Helvetica; color: #000000"><b>To: </b></font><font =
face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px Helvetica">"Jim =
(James W.) Wolford" &lt;<a =
href=3D"mailto:jimwolford@eastlink.ca">jimwolford@eastlink.ca</a>&gt;</fon=
t></div><div style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; "><font face=3D"Helvetica" size=3D"3" =
color=3D"#000000" style=3D"font: 12.0px Helvetica; color: =
#000000"><b>Subject: </b></font><font face=3D"Helvetica" size=3D"3" =
style=3D"font: 12.0px Helvetica"><b>Re: slacks - when do they =
refill?</b></font></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; =
"><br></div> <span class=3D"Apple-style-span" style=3D"border-collapse: =
separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: =
normal; font-variant: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; orphans: 2; text-align: auto; text-indent: =
0px; text-transform: none; white-space: normal; widows: 2; word-spacing: =
0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div><font =
size=3D"2" face=3D"Arial">JIm,</font></div><div><font size=3D"2" =
face=3D"Arial"></font>&nbsp;</div><div><font size=3D"2" =
face=3D"Arial">Sorry - terribly busy here. Those slacks&nbsp;hold =
water&nbsp;fresh-enough&nbsp;for deer to&nbsp;drink. I have a longer =
story dating back to the 1960's&nbsp;but not right now. I =
think&nbsp;Nancy&nbsp;Dowd&nbsp; and Randy have it about =
right.</font></div><div><font size=3D"2" =
face=3D"Arial"></font>&nbsp;</div><div><font size=3D"2" =
face=3D"Arial">Best,</font>&nbsp;</div><div><font size=3D"2" =
face=3D"Arial">Bob</font></div><blockquote style=3D"border-left-color: =
rgb(0, 0, 0); border-left-width: 2px; border-left-style: solid; =
padding-left: 5px; padding-right: 0px; margin-left: 5px; margin-right: =
0px; "><div style=3D"font: normal normal normal 10pt/normal arial; =
">----- Original Message -----</div><div style=3D"font: normal normal =
normal 10pt/normal arial; background-image: initial; =
background-attachment: initial; background-origin: initial; =
background-clip: initial; background-color: rgb(228, 228, 228); =
background-position: initial initial; background-repeat: initial =
initial; "><b>From:</b><span =
class=3D"Apple-converted-space">&nbsp;</span><a =
title=3D"jimwolford@eastlink.ca" =
href=3D"mailto:jimwolford@eastlink.ca">Jim (James W.) =
Wolford</a></div><div style=3D"font: normal normal normal 10pt/normal =
arial; "><b>To:</b><span class=3D"Apple-converted-space">&nbsp;</span><a =
title=3D"wild1@eastlink.ca" href=3D"mailto:wild1@eastlink.ca">Bob =
Bancroft</a></div><div style=3D"font: normal normal normal 10pt/normal =
arial; "><b>Sent:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>Friday, May 23, 2014 3:30 =
PM</div><div style=3D"font: normal normal normal 10pt/normal arial; =
"><b>Subject:</b><span class=3D"Apple-converted-space">&nbsp;</span>slacks=
 - when do they refill?</div><div><br></div>Bob, I think I forwarded one =
message on this earlier, but I have a bunch more if you care to see =
them? &nbsp;Cheers from Jim, and looking forward to a week from today at =
the Gaelic College!<br><div><br><div>Begin forwarded message:</div><br =
class=3D"Apple-interchange-newline"><blockquote type=3D"cite"><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><font color=3D"#000000" size=3D"3" face=3D"Helvetica" =
style=3D"font: normal normal normal 12px/normal Helvetica; color: rgb(0, =
0, 0); "><b>From:<span =
class=3D"Apple-converted-space">&nbsp;</span></b></font><font size=3D"3" =
face=3D"Helvetica" style=3D"font: normal normal normal 12px/normal =
Helvetica; ">Randy Lauff &lt;<a =
href=3D"mailto:randy.lauff@gmail.com">randy.lauff@gmail.com</a>&gt;</font>=
</div><div style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; "><font color=3D"#000000" size=3D"3" =
face=3D"Helvetica" style=3D"font: normal normal normal 12px/normal =
Helvetica; color: rgb(0, 0, 0); "><b>Date:<span =
class=3D"Apple-converted-space">&nbsp;</span></b></font><font size=3D"3" =
face=3D"Helvetica" style=3D"font: normal normal normal 12px/normal =
Helvetica; ">May 23, 2014 3:14:29 PM ADT</font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><font color=3D"#000000" size=3D"3" face=3D"Helvetica" =
style=3D"font: normal normal normal 12px/normal Helvetica; color: rgb(0, =
0, 0); "><b>To:<span =
class=3D"Apple-converted-space">&nbsp;</span></b></font><font size=3D"3" =
face=3D"Helvetica" style=3D"font: normal normal normal 12px/normal =
Helvetica; ">NatureNS &lt;<a =
href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</a>&gt;</f=
ont></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><font color=3D"#000000" size=3D"3"=
 face=3D"Helvetica" style=3D"font: normal normal normal 12px/normal =
Helvetica; color: rgb(0, 0, 0); "><b>Subject:<span =
class=3D"Apple-converted-space">&nbsp;</span></b></font><font size=3D"3" =
face=3D"Helvetica" style=3D"font: normal normal normal 12px/normal =
Helvetica; "><b>Re: [NatureNS] slacks - when do they =
refill?</b></font></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; "><font color=3D"#000000" =
size=3D"3" face=3D"Helvetica" style=3D"font: normal normal normal =
12px/normal Helvetica; color: rgb(0, 0, 0); "><b>Reply-To:<span =
class=3D"Apple-converted-space">&nbsp;</span></b></font><font size=3D"3" =
face=3D"Helvetica" style=3D"font: normal normal normal 12px/normal =
Helvetica; "><a =
href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</a></font>=
</div><div style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; min-height: 14px; "><br></div><div dir=3D"ltr">I =
have posted a picture of the slack here:&nbsp;<a =
href=3D"http://people.stfx.ca/rlauff/307/PomquetSlack.jpg">http://people.s=
tfx.ca/rlauff/307/PomquetSlack.jpg</a>. One person I asked locally =
thought that the slack filled up again with the autumn rains. That's =
probably right, but I still can't discount snow melt accompanied by =
spring rain. I guess I'll find out this =
year.<div><br></div><div>Randy</div></div><div class=3D"gmail_extra"><br =
clear=3D"all"><div>_________________________________<br>RF Lauff<br>Way =
in the boonies of<br>Antigonish County, NS.</div><br><br><div =
class=3D"gmail_quote">On 21 May 2014 18:08, nancy dowd<span =
class=3D"Apple-converted-space">&nbsp;</span><span dir=3D"ltr">&lt;<a =
href=3D"mailto:nancypdowd@gmail.com" =
target=3D"_blank">nancypdowd@gmail.com</a>&gt;</span><span =
class=3D"Apple-converted-space">&nbsp;</span>wrote:<br><blockquote =
class=3D"gmail_quote" style=3D"border-left-color: rgb(204, 204, 204); =
border-left-width: 1px; border-left-style: solid; margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; padding-left: =
1ex; ">Maybe it is just evaporation. Water accumulates in the leaf-lined =
slacks in the Spring (rain and melt) and eventually warming temps and =
strong sun evaporate it until it is empty. Over the summer heat and sun =
manage to keep up with the rainfall not allowing it to accumulate for =
any length of time (it must be hot down in those slacks). Then once the =
cooler temps and less intense sun of Fall take over rainwater can =
accumulate once again in the slacks until it freezes.<br><br>Just a =
guess.<br><br>Nancy<br><div><div class=3D"h5">On 2014-05-21, at 4:39 PM, =
David &amp; Alison Webster &lt;<a =
href=3D"mailto:dwebster@glinx.com">dwebster@glinx.com</a>&gt; =
wrote:<br><br>&gt; Hi Randy &amp; All,<br>&gt; &nbsp; &nbsp; I had =
imagined these dunes to be bare sand. With tree cover on the peaks and =
presumably none on the slacks there is another effect that will increase =
effective ppt in the slacks; sublimation on the tree canopy in calm =
weather and selective snow accumulation in treeless areas (roads, =
glades, etc) in windy weather due to less turbulence and less speed over =
glades..<br>&gt; Yt, DW<br>&gt; ----- Original Message -----<br>&gt; =
From: Randy Lauff<br>&gt; To: NatureNS<br>&gt; Sent: Wednesday, May 21, =
2014 9:57 AM<br>&gt; Subject: Re: [NatureNS] slacks - when do they =
refill?<br>&gt;<br>&gt; Thanks folks,<br>&gt;<br>&gt; I haven't been =
there in winter, despite my being in NS now for over 20 =
years.<br>&gt;<br>&gt; Here's the landscape picture though. Picture an =
accordion, partly open lying on its back. The bellows represent the dune =
system at Pomquet, there are peaks and troughs (slacks), and precious =
little other elevations going on. At the slack in question, the =
surrounding peaks of the dunes are dominated by white pine and oak, with =
other trees as well.<br>&gt;<br>&gt; Fred asked, if the dunes are sandy, =
how are they holding water in the first place? Basically, I think there =
is leaf litter which may be accumulating in the slack to slow the water =
seepage. Further to Anne's email, the slack in question is well back =
from the salt water, I suspect there is no salt to speak of in that =
water. Mosquitoes are there in the billions, peepers are deafening, both =
suggesting fresh water (though I realize a few mosquitoes can tolerate =
brackish water).<br>&gt;<br>&gt; Randy<br>&gt;<br>&gt; =
_________________________________<br>&gt; RF Lauff<br>&gt; Way in the =
boonies of<br>&gt; Antigonish County, NS.<br>&gt;<br>&gt;<br>&gt; On 20 =
May 2014 18:24, David &amp; Alison Webster&lt;<a =
href=3D"mailto:dwebster@glinx.com">dwebster@glinx.com</a>&gt; =
wrote:<br>&gt; Hi Randy &amp; All, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;May 20, =
2014<br>&gt; &nbsp; &nbsp; I don't have a clear picture of the =
topography, either dune or inland, but one possible source of water in =
the slacks is drifting of snow into pools.<br>&gt;<br>&gt; &nbsp; &nbsp; =
In woods south of Kentville, where I used to walk in winter, pools in =
woodland cradlehollows of swampy sites never froze. With 2'-3' of snow =
on the ground, the air cone was typically about ~1' across at snow level =
and 4" across at water level. Even at -20o C, with heavy snowfall, 60 =
mph winds and drifting snow &nbsp;there would be no hint of ice. =46rom =
the viewpoint of ppt per unit area these cones act as black holes; snow =
blows into them but, soon being water, can not escape. These air cones =
were absent when snow was not deep enough to act as a good insulator. =
With sufficient snow cover drifted ~level over the swamp, the soil at =
the base of cradlehollows would warm sufficiently by ground heat from =
below to melt overlying snow and eventually generate one of these air =
cones.<br>&gt;<br>&gt; &nbsp; &nbsp; If these pools were sufficiently =
above the water table then they would tend to be transient but, in most =
soils (given sufficient iron and decomposable organic matter), =
infiltration rate at constant head will gradually slow due to formation =
of a local iron pan over decades or centuries. This effect interested me =
because ortstein is sometimes very scattered; patches 3-4' wide and =
10-15' apart and these pools that collect below air cones could account =
for this. Also prolonged wetting will slake any soil aggregates and =
decrease infiltration rate.<br>&gt;<br>&gt; &nbsp; &nbsp; Getting back =
to dunes, in the idealized case of parallel linear dunes and linear =
slacks and &nbsp;in deep snow conditions I would expect linear narrow =
pools at the base of linear narrow trenches in the snow; V-shaped =
deposits of ortstein if dunes are stable and not =
advancing.<br>&gt;<br>&gt; &nbsp; &nbsp; Have you been there in winter =
and if so does any of this register ?<br>&gt; Yt, Dave Webster, =
Kentville<br>&gt; ----- Original Message -----<br>&gt; From: Randy =
Lauff<br>&gt; To: NatureNS<br>&gt; Sent: Tuesday, May 20, 2014 4:20 =
PM<br>&gt; Subject: Re: [NatureNS] slacks - when do they =
refill?<br>&gt;<br>&gt; Thanks Fred, but in a dune system, wouldn't that =
mean that the slacks would be less than half full with water? These are =
sand dunes...very porous, so I'm suspecting water leaching in from the =
hills of the dunes into the slacks just couldn't fill them. This is =
unlike the condition in vernal pools where there can be ample elevation =
around from which water could leach in to the pool area. I'm thinking =
there has to be a significant rain or snow fall to fill =
them.<br>&gt;<br>&gt; Randy<br>&gt;<br>&gt; =
_________________________________<br>&gt; RF Lauff<br>&gt; Way in the =
boonies of<br>&gt; Antigonish County, NS.<br>&gt;<br>&gt;<br>&gt; On 20 =
May 2014 15:30, Fred Schueler &lt;<a =
href=3D"mailto:bckcdb@istar.ca">bckcdb@istar.ca</a>&gt;wrote:<br>&gt; On =
5/20/2014 2:18 PM, Randy Lauff wrote:<br>&gt;<br>&gt; Between several of =
the dunes at Pomquet Beach, Ant. Co., the slacks (the<br>&gt; troughs =
between dune crests) fill with water, but by summer are dry. I<br>&gt; =
guess I've just never been there at the right time to see when they =
fill<br>&gt; again...it can't be just from winter melt water, since the =
slacks are<br>&gt; almost full (and snow melts to about 10% its volume =
as water). Do the<br>&gt; autumn rains fill them again, or the spring =
rains? Or is it a<br>&gt; case-by-case scenario, which I'd just have to =
monitor?<br>&gt;<br>&gt; * I had the same thought about vernal pools at =
the CARCNET meeting at Quebec City in 1999, during a presentation on =
Marbled Salamanders, which come down into the vernal pools to lay their =
eggs on the dry pondbed in the fall, and stay with them all winter. It =
turns out that the vernal pools fill from the water table, as one would =
think sandy dunes would. And yes, I've been monitoring water level in =
our local Wood Frog ponds, fall and late winter, ever since =
then.<br>&gt;<br>&gt; fred.<br>&gt; =
------------------------------------------------------------<br>&gt; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Frederick W. Schueler &amp; Aleta =
Karstad<br>&gt; Daily Paintings -<a =
href=3D"http://karstaddailypaintings.blogspot.com/" =
target=3D"_blank">http://karstaddailypaintings.blogspot.com/</a><br>&gt; =
Vulnerable Watersheds -<a href=3D"http://vulnerablewaters.blogspot.ca/" =
target=3D"_blank">http://vulnerablewaters.blogspot.ca/</a><br></div></div>=
&gt; &nbsp; &nbsp;study our books -<a =
href=3D"http://pinicola.ca/books/index.htm" =
target=3D"_blank">http://pinicola.ca/books/index.htm</a><br><div>&gt; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;RR#2 Bishops Mills, Ontario, Canada =
K0G 1T0<br>&gt; &nbsp; on the Smiths Falls Limestone Plain 44* 52'N 75* =
42'W<br></div>&gt; &nbsp; &nbsp;<a href=3D"tel:%28613%29258-3107" =
value=3D"+16132583107">(613)258-3107</a><span =
class=3D"Apple-converted-space">&nbsp;</span>&lt;bckcdb<span =
class=3D"Apple-converted-space">&nbsp;</span><a href=3D"http://atistar.ca"=
 target=3D"_blank">atistar.ca</a>&gt;<span =
class=3D"Apple-converted-space">&nbsp;</span><a =
href=3D"http://pinicola.ca/" =
target=3D"_blank">http://pinicola.ca/</a><br><div class=3D"HOEnZb"><div =
class=3D"h5">&gt; =
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