next message in archive
next message in thread
previous message in archive
previous message in thread
Index of Subjects
gradually slow d
--_1b0c492c-6e87-456e-8b18-006a77f4f113_
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Hi Randy=2C
=20
Is the water fresh? brackish? normal saline? hypersaline? If the dunes are=
close enough to the ocean=2C is it possible that in the winter when the sa=
nd is naturally more wet from precipitation the incoming tidewaters percola=
ting into the dunes from below push the precipitation water from the sand u=
p into visible pools? Then in the summer the dunes dry out and there is no=
t enough precipitation water left in the sand to be pushed to the surface b=
y the tidewaters=2C and the slacks disappear.
=20
In the winter=2C do the slack-water levels rise and fall at all in coordina=
tion with the local tides=2C which as I recall can be very "weird" in any c=
ase within the Pomquet Harbour system itself=2C depending on wind direction=
!
=20
A. Woolaver
=20
From: randy.lauff@gmail.com
Date: Tue=2C 20 May 2014 16:20:41 -0300
Subject: Re: [NatureNS] slacks - when do they refill?
To: naturens@chebucto.ns.ca
Thanks Fred=2C but in a dune system=2C wouldn't that mean that the slacks w=
ould be less than half full with water? These are sand dunes...very porous=
=2C so I'm suspecting water leaching in from the hills of the dunes into th=
e slacks just couldn't fill them. This is unlike the condition in vernal po=
ols 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 sno=
w fall to fill them.=20
Randy
_________________________________
RF Lauff
Way in the boonies of
Antigonish County=2C NS.
On 20 May 2014 15:30=2C Fred Schueler <bckcdb@istar.ca> wrote:
On 5/20/2014 2:18 PM=2C Randy Lauff wrote:
Between several of the dunes at Pomquet Beach=2C Ant. Co.=2C the slacks (th=
e
troughs between dune crests) fill with water=2C 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=2C since the slacks are
almost full (and snow melts to about 10% its volume as water). Do the
autumn rains fill them again=2C or the spring rains? Or is it a
case-by-case scenario=2C which I'd just have to monitor?
* I had the same thought about vernal pools at the CARCNET meeting at Quebe=
c City in 1999=2C during a presentation on Marbled Salamanders=2C which com=
e down into the vernal pools to lay their eggs on the dry pondbed in the fa=
ll=2C and stay with them all winter. It turns out that the vernal pools fil=
l from the water table=2C as one would think sandy dunes would. And yes=2C =
I've been monitoring water level in our local Wood Frog ponds=2C fall and l=
ate winter=2C 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=2C Ontario=2C Canada K0G 1T0
on the Smiths Falls Limestone Plain 44* 52'N 75* 42'W
(613)258-3107 <bckcdb at istar.ca> http://pinicola.ca/
------------------------------------------------------------
=
--_1b0c492c-6e87-456e-8b18-006a77f4f113_
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<html>
<head>
<style><!--
.hmmessage P
{
margin:0px=3B
padding:0px
}
body.hmmessage
{
font-size: 12pt=3B
font-family:Calibri
}
--></style></head>
<body class=3D'hmmessage'><div dir=3D'ltr'>Hi Randy=2C<BR>
 =3B<BR>
Is the water fresh? brackish? normal saline? hypersaline? =3B If the du=
nes are close enough to the ocean=2C is it possible that in the winter when=
the sand is naturally more wet from precipitation the incoming tidewaters =
percolating into the dunes from below push the precipitation water from the=
 =3Bsand up into visible pools? =3B Then in the summer the dunes dr=
y out and there is not enough =3Bprecipitation water left in the sand t=
o be pushed to the surface by the tidewaters=2C and the slacks disappear.<B=
R>
 =3B<BR>
In the winter=2C do the slack-water levels rise and fall at all in coordina=
tion with the local tides=2C which as I recall can be very "weird" in any c=
ase within the Pomquet Harbour system itself=2C =3Bdepending on wind di=
rection!<BR>
 =3B<BR>
A. Woolaver<BR>
 =3B<BR>
<DIV>
<HR id=3DstopSpelling>
From: randy.lauff@gmail.com<BR>Date: Tue=2C 20 May 2014 16:20:41 -0300<BR>S=
ubject: Re: [NatureNS] slacks - when do they refill?<BR>To: naturens@chebuc=
to.ns.ca<BR><BR>
<DIV dir=3Dltr>Thanks Fred=2C but in a dune system=2C wouldn't that mean th=
at the slacks would be less than half full with water? These are sand dunes=
...very porous=2C 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 conditio=
n in vernal pools where there can be ample elevation around from which wate=
r could leach in to the pool area. I'm thinking there has to be a significa=
nt rain or snow fall to fill them.=20
<DIV><BR></DIV>
<DIV>Randy</DIV></DIV>
<DIV class=3Decxgmail_extra><BR clear=3Dall>
<DIV>_________________________________<BR>RF Lauff<BR>Way in the boonies of=
<BR>Antigonish County=2C NS.</DIV><BR><BR>
<DIV class=3Decxgmail_quote>On 20 May 2014 15:30=2C Fred Schueler <SPAN dir=
=3Dltr><=3B<A href=3D"mailto:bckcdb@istar.ca" target=3D_blank>bckcdb@ista=
r.ca</A>>=3B</SPAN> wrote:<BR>
<BLOCKQUOTE style=3D"BORDER-LEFT: #ccc 1px solid=3B PADDING-LEFT: 1ex" clas=
s=3Decxgmail_quote>
<DIV>On 5/20/2014 2:18 PM=2C Randy Lauff wrote:<BR><BR>
<BLOCKQUOTE style=3D"BORDER-LEFT: #ccc 1px solid=3B PADDING-LEFT: 1ex" clas=
s=3Decxgmail_quote>Between several of the dunes at Pomquet Beach=2C Ant. Co=
.=2C the slacks (the<BR>troughs between dune crests) fill with water=2C but=
by summer are dry. I<BR>guess I've just never been there at the right time=
to see when they fill<BR>again...it can't be just from winter melt water=
=2C since the slacks are<BR>almost full (and snow melts to about 10% its vo=
lume as water). Do the<BR>autumn rains fill them again=2C or the spring rai=
ns? Or is it a<BR>case-by-case scenario=2C which I'd just have to monitor?<=
BR></BLOCKQUOTE><BR></DIV>* I had the same thou