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And note that porous asphalt pavement, which has been available for 4
decades, reduces the need for salt and by aiding infiltration avoids salt
peaks in waterways, is not prone to potholes or hydroplaning and being rough
is less hazardous in black ice conditions. For the 1978 bible see--
http://www.asphaltpavement.org/images/stories/porous_pavement-thelan.pdf
This is an old PDF so find does not work and 1-3 characters are missing
from the left margin of most pages but reading both ends to the left margin
usually works.
For a really different and recent twist see--
To be continued: my computer has eaten two e-mails and even find can't find
them; no kidding.
Yt, Dave Webster
----- Original Message -----
From: "Fred Schueler" <bckcdb@istar.ca>
To: <naturens@chebucto.ns.ca>
Cc: "nancy dowd" <nancypdowd@gmail.com>
Sent: Monday, December 09, 2013 4:27 PM
Subject: Re: [NatureNS] mourning doves among road salt
> On 12/9/2013 11:57 AM, terri.crane@ns.sympatico.ca wrote:
>
>> It was likely for the grit! not a healthy choice and as spastics show
>> often a deadly one
>
> * Road salts and birds: an assessment of the risk with particular emphasis
> on winter finch mortality - Pierre Mineau and Lorna J. Brownlee Wildlife
> Society Bulletin 33(3):835-841. 2005
>
> Abstract: There have been many documented cases of bird mortality along
> roadsides where salt was applied. Herbivorous and granivorous species,
> especially, are attracted to salt, probably to satisfy a dietary need.
> Because mortality appears to be primarily a result of vehicle strikes,
> most authors have assumed that salt was only indirectly responsible for
> the deaths—a case of “fatal attraction” to busy salted roads. Repeated
> observations of apparent behavioral toxicity along roadsides, as well as
> new information on the toxicology of oral salt ingestion in birds, now
> suggest that salt toxicity per se is contributing to the vulnerability of
> small songbirds to road traffic and perhaps is a direct cause of mortality
> in some birds. The difficulty of retrieving bird carcasses and the low
> rate of reporting suggest that kills probably are more widespread and
> frequent than indicated by documented reports alone. Most known cases of
> songbird mortality have occurred within a group of birds collectively
> known as winter finches belonging to the subfamily Carduelinae. This may
> result from a higher probability of exposure for these species because of
> their diet and presence in the snow belt but also may reflect a greater
> ease of detecting mortality incidents in species forming large feeding
> flocks. The high attraction of salted roads for winter finches suggests
> that the roads' ecological footprint is very large. We conclude that the
> importance of road salt as a mortality factor in these species long has
> been under-estimated by wildlife managers and transport personnel.
>
> http://www.bioone.org/doi/abs/10.2193/0091-7648%282005%2933%5B835%3ARSABAA%5D2.0.CO%3B2
>
>> ---- nancy dowd <nancypdowd@gmail.com> wrote:
>>> There was a group of about 10 Mourning Doves amidst a pile of loose road
>>> salt on the paved intersection of Trunk 10 and the Cherryfield Road, Lun
>>> Co this morning. They flew off as I turned in. I can't imagine they were
>>> feeding on road salt and were maybe just investigating a possible food
>>> or grit source? Strange to see them there.
>>>
>>> Nancy
>
>
> --
> ------------------------------------------------------------
> Frederick W. Schueler & Aleta Karstad
> Bishops Mills Natural History Centre - http://pinicola.ca/bmnhc.htm
> Mudpuppy Night in Oxford Mills - http://pinicola.ca/mudpup1.htm
> Daily Paintings - http://karstaddailypaintings.blogspot.com/
> 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/
> ------------------------------------------------------------
>
>
> -----
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