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--Apple-Mail-4--743126964 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed It occurs to me that there might be a poorly known wild card in all these places, regarding both slacks and vernal pools, and that is seepage from underground springs of more than one kind?? My naive guess is that the distribution of springs and their amounts and seasonality of seepage is about as well known (poorly or worse?) as for groundwater. Thus when talking to people or writing about "my" vernal pool on the Jodrey Trail in Blomidon Prov. Park (home to fairy shrimps etc.), I throw in possible seepage from springs as part of the cycle there of filling and dropping levels of water, which varies hugely from year to year. Cheers from Jim in Wolfville. Begin forwarded message: > From: Fred Schueler <bckcdb@istar.ca> > Date: May 20, 2014 5:05:00 PM ADT > To: naturens@chebucto.ns.ca > Subject: Re: [NatureNS] slacks - when do they refill? > Reply-To: naturens@chebucto.ns.ca > > On 5/20/2014 3:20 PM, Randy Lauff wrote: >> 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. > > * of course I can't visualize your landscape, but in sand wouldn't > the precipitation just immediately flow away into the water table? > Those vernal pools that are good Wood Frog breeding habitat don't > particularly respond to immediate precipitation (as nearby flow- > connected wetlands do), since they don't have any inflowing > streams, and they just seem to be at whatever level the water table > is - and it would seem that this would be even more the case in > sand, unless there's clay lenses under the surface that hold the > water from snow melt & rain? (my Wood Frog ponds are actually among > old dunes from the Champlain Sea, that were more recently active > after the deforestation of the late 19th Century). > > fred. > ============================================================= > >> On 20 May 2014 15:30, Fred Schueler <bckcdb@istar.ca >> <mailto: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 at istar.ca> http://pinicola.ca/ > ------------------------------------------------------------ --Apple-Mail-4--743126964 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=US-ASCII <html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; = -webkit-line-break: after-white-space; "> It occurs to me that there might be a poorly known wild card in all = these places, regarding both slacks and vernal pools, and that is = seepage from underground springs of more than one kind?? My naive = guess is that the distribution of springs and their amounts and = seasonality of seepage is about as well known (poorly or worse?) as for = groundwater. Thus when talking to people or writing about "my" = vernal pool on the Jodrey Trail in Blomidon Prov. Park (home to fairy = shrimps etc.), I throw in possible seepage from springs as part of the = cycle there of filling and dropping levels of water, which varies hugely = from year to year.<div><br></div><div>Cheers from 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">Fred Schueler <<a = href=3D"mailto:bckcdb@istar.ca">bckcdb@istar.ca</a>></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>Date: = </b></font><font face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px = Helvetica">May 20, 2014 5:05:00 PM 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"><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; "><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: [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 face=3D"Helvetica" = size=3D"3" color=3D"#000000" style=3D"font: 12.0px Helvetica; color: = #000000"><b>Reply-To: </b></font><font face=3D"Helvetica" size=3D"3" = style=3D"font: 12.0px 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 = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">On 5/20/2014 3:20 PM, Randy Lauff wrote:</div> = <blockquote type=3D"cite"><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; ">Thanks Fred, but in a dune = system, wouldn't that mean that the slacks</div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">would be = less than half full with water? These are sand dunes...very</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">porous, so I'm suspecting water leaching in from the = hills of the dunes</div><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; ">into the slacks just = couldn't fill them. This is unlike the condition in</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">vernal pools where there can be ample elevation = around from which water</div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">could leach = in to the pool area. I'm thinking there has to be a</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">significant rain or snow fall to fill them.</div> = </blockquote><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">* of course I can't visualize your landscape, but in = sand wouldn't the precipitation just immediately flow away into the = water table? Those vernal pools that are good Wood Frog breeding habitat = don't particularly respond to immediate precipitation (as nearby = flow-connected wetlands do), since they don't have any inflowing = streams, and they just seem to be at whatever level the water table is - = and it would seem that this would be even more the case in sand, unless = there's clay lenses under the surface that hold the water from snow melt = & rain? (my Wood Frog ponds are actually among old dunes from the = Champlain Sea, that were more recently active after the deforestation of = the late 19th Century).</div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: = 14px; "><br></div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">fred.</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; = ">=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: = 14px; "><br></div> <blockquote type=3D"cite"><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">On 20 = May 2014 15:30, Fred Schueler <<a = href=3D"mailto:bckcdb@istar.ca">bckcdb@istar.ca</a></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><<a = href=3D"mailto:bckcdb@istar.ca">mailto:bckcdb@istar.ca</a>>> = wrote:</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>On 5/20/2014 2:18 PM, Randy Lauff wrote:</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> = </span>Between several of the dunes at Pomquet Beach, Ant. Co., = the</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> = </span>slacks (the</div><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> = </span>troughs between dune crests) fill with water, but by summer = are</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> </span>dry. = I</div><div style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: = 0px; margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>guess I've just never been there at the = right time to see when</div><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> </span>they = fill</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> = </span>again...it can't be just from winter melt water, since = the</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> = </span>slacks are</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> = </span>almost full (and snow melts to about 10% its volume as = water).</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> </span>Do = the</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> = </span>autumn rains fill them again, or the spring rains? Or is it = a</div><div style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: = 0px; margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>case-by-case scenario, which I'd just have = to monitor?</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> </span>* I had the same = thought about vernal pools at the CARCNET meeting</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>at Quebec City in 1999, during a presentation on = Marbled</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> </span>Salamanders, which = come down into the vernal pools to lay their eggs</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>on the dry pondbed in the fall, and stay with them all winter. = It</div><div style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: = 0px; margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>turns out that the vernal pools fill from the water table, = as one</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> </span>would think sandy = dunes would. And yes, I've been monitoring water</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>level in our local Wood Frog ponds, fall and late winter, ever = since</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> </span>then.</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> </span>fred.</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>------------------------------__------------------------------</div= > </blockquote><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">--<span = class=3D"Apple-converted-space"> </span></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; = ">------------------------------------------------------------</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>Frederick W. Schueler & Aleta = Karstad</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">Daily Paintings - <a = href=3D"http://karstaddailypaintings.blogspot.com">http://karstaddailypain= tings.blogspot.com</a>/</div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Vulnerable = Watersheds - <a = href=3D"http://vulnerablewaters.blogspot.ca">http://vulnerablewaters.blogs= pot.ca</a>/</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> </span>study our books - <a = href=3D"http://pinicola.ca/books/index.htm">http://pinicola.ca/books/index= .htm</a></div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><span = class=3D"Apple-converted-space"> = </span>RR#2 Bishops Mills, Ontario, Canada K0G 1T0</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>on the Smiths Falls Limestone Plain 44* 52'N 75* 42'W</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><span class=3D"Apple-converted-space"> = </span>(613)258-3107 <bckcdb at istar.ca> <a = href=3D"http://pinicola.ca">http://pinicola.ca</a>/</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; = ">------------------------------------------------------------</div> = </blockquote></div><br></div></body></html>= --Apple-Mail-4--743126964--
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