[APWG] Stories needed about "Mishaps with use of weed infested sandand gravel"

[Wayne Tyson]

This sounds like a subject of broad interest to this list. I, for one, would 
like to know more about the details.

The whole issue of dispersal and dispersal agents is a long one, and isn't 
necessarily limited to "mineral material mishaps" (whatever that means) 
alone, but can involve aspects of movement other than such things as sand 
and gravel movement, such as propagules hitching a ride on vehicles (e.g. 
Brassica tournefortii and countless other species).

While it would be a "no-brainer" to "certify" incoming material loads, some 
might let their imaginations run wild. One thought might be to certify donor 
sites. Many sand and gravel pits are, however, first-rate "weed" sites, and 
those in drainages are likely to contain propagules from the watersheds 
above them.

Scale and application scenarios come to mind too, as would the functional 
and economic trade-offs involved in getting to the point, which presumably 
is to prevent the transmission and establishment of alien or pestiferous 
organisms.

Washing down bulldozers and other off-highway vehicles before they cut 
so-called "firebreaks" or venture beyond might be an option, but in some 
interpretations might also be an invitation to protest. As a matter of 
actual fact, this sort of thing might be a tempest in a teapot, a solution 
to a major problem, or an infinite range of possibilities in between.

I hope Hutten will share the study design and results with the group.

WT


----- Original Message ----- 
From: <Bobbi_Simpson at nps.gov>
To: <APWG at lists.plantconservation.org>
Sent: Wednesday, April 28, 2010 1:05 PM
Subject: [APWG] Stories needed about "Mishaps with use of weed infested 
sandand gravel"


>
> Hello all,
>
> I have received a request from Yosemite National Park's Invasive Plant
> Program Manager, Martin Hutten for case examples of "mineral material
> mishaps". If you have first-hand knowledge or experience with this - if 
> you
> could describe the situation(s) where you have witnessed the use of weed
> contaminated minerals that have resulted in an invasion of weeds.
>
> Pictures of "before and after" are helpful but not critical - however your
> name, contact, and as many details on the subject site would be great.
> Martin has been working diligently on this for about 6 months and is
> working with Cal-IPC to spur on a movement within California to begin
> certifying mineral vendors.    This information will help support the
> effort, and as it gains momentum, can hopefully provide a good example for
> others to do the same.
>
> If you could reply to Martin_Hutten at NPS.gov that would be terrific.
>
> Feel free to call me if you have questions.  Thanks much!
>
> Bobbi
>
>
> Bobbi Simpson
> Program Coordinator
> California Exotic Plant Management Team
> Point Reyes National Seashore
> 1 Bear Valley Road
> Point Reyes Station, Ca. 94956
>
> 415-464-5190 office
> 415-717-0471 cell
>
> Visit our Sharepoint TODAY~
> http://nrpcsharepoint/brmd/Invasive_Plant_Mgt/CAEPMT/
>
>
>
> _______________________________________________
> PCA's Alien Plant Working Group mailing list
> APWG at lists.plantconservation.org
> http://lists.plantconservation.org/mailman/listinfo/apwg_lists.plantconservation.org
>
> Disclaimer
> Any requests, advice or opinions posted to this list reflect ONLY the 
> opinion of the individual posting the message.


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