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Re: helpful weed

> Debby writes:
> 
> > So, what happens to the salt? Does it concentrate in the plants? What
> >  happens when the plants die? There must be more to this than they're
> >  letting on.
> >  
> I don't know.  What happens with other plants that act as biological filters?
> I just thought the article was interesting because I have family in west Texas
> and have seen areas of ground where nothing has grown for years due to oil
> well spillovers.  Maybe the knotweed provides a source of salt for animals far
> from either coast.

I just got mail back from one of the researchers working on this project.
He says:

----------------------------------------------------------------------
Dear Dr. Lindsey:

    We have been investigating the ability of halophytes to accumulate
salts and reduce soil salinity in brine spills.  Two publications that
might be useful to you are:
Foderaro, MA and Ungar IA. 1997.  Growth and survival of 	Polygonum
aviculare L. at a brine contaminated 	site in southeastern Ohio.  American
Midland 	Naturalist 138: 140-152.

Keiffer, CH and I.A. Ungar.  1997.  The effects of 	density and salinity on
shoot biomass and ion 	accumulation in five inland halophyte species.
Canadian Journal of Botany 75:96-107.

Polygonum aviculare is a widespread weed species in North America, but it
is a poor competitor with perennials which eventually replace it.         

Best wishes,

IA Ungar
----------------------------------------------------------------------

Anyone have access to the actual publications?

Chris
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