[APWG] Re: [ma-eppc] RE: Killer plant- spotted knapweed poisons rivals- article NYT...

[SteveYoung at aol.com]

See the (Cornell) web page at:

http://www.invasiveplants.net/impsal.htm

which summarizes some interactions Maerz and Blossey are studying between 
invasive plants and earthworms and their impacts on native salamanders. The 
references at the bottom the page should provide more info on earthworm/invasive 
plant relationships. One excerpt from the web page:

"There is a strong connection between earthworms, their impacts, and the 
invasions of the nonnative plants.  For all three plant species, we are finding 
earthworm abundance is significantly greater and leaf litter decomposition is 
significantly higher in the plant-invaded area than in the adjacent non-invaded 
area.  Other investigators have also noted the connection between the presence 
of nonnative plants and increased earthworm abundance or leaf litter loss 
(Kourtev et al. 1999, Meekins and McCarthy 2001).  Earthworms might be 
facilitating the invasions of nonnative plants into forests by increasing nutrient 
availability and reducing native plant abundance (Hendrix and Bohlen 2002).  
Kourtev et al. (1999) hypothesize that there is a positive feedback between 
nonnative earthworms and nonnative plants, where earthworms initially facilitate plant 
invasions, and then nonnative plants have a positive effect on earthworm 
abundance through enrichment of leaf litter quality."
    
Interesting stuff. Cheers,

       Steve


In a message dated 9/9/03 4:09:58 PM Eastern Daylight Time, 
dburton at schuylkillcenter.org writes:


> Subj:RE: [ma-eppc] RE: Killer plant- spotted knapweed poisons rivals- 
> article NYTim es 
> Date:9/9/03 4:09:58 PM Eastern Daylight Time
> From:<A HREF="mailto:dburton at schuylkillcenter.org">dburton at schuylkillcenter.org</A>
> To:<A HREF="mailto:michelsk at ficod.fic.nih.gov">michelsk at ficod.fic.nih.gov</A>, <A HREF="mailto:MALawler at aol.com">MALawler at aol.com</A>, <A HREF="mailto:ma-eppc at yahoogroups.com">ma-eppc at yahoogroups.com</A>, <A HREF="mailto:apwg at lists.plantconservation.org">
> apwg at lists.plantconservation.org</A>
> Sent from the Internet 
> 
> 
> 
> Have you noticed an abundance of earthworms in the soil associated with
> stilt grass? We have had fair success reestablishing native forbs in areas
> where there are fewer earthworms and moderate or less where worms are
> abundant.
> 
> -----Original Message-----
> From: Michels, Kathleen (NIH/FIC) [mailto:michelsk at ficod.fic.nih.gov]
> Sent: Tuesday, September 09, 2003 1:37 PM
> To: 'MALawler at aol.com'; ma-eppc at yahoogroups.com;
> apwg at lists.plantconservation.org
> Subject: [ma-eppc] RE: Killer plant- spotted knapweed poisons rivals-
> article NYTim es
> 
> 
> I'd be willing to  bet Japanese Stiltgrass does this too. I've had a an
> impossible time getting regrowth of natives in test areas where I've
> eliminated Stiltgrass for years. Even vigourous reseeders like Jewelweed
> aren't coming back. 
> > -----Original Message-----
> > From:    MALawler at aol.com [SMTP:MALawler at aol.com]
> > Sent:    Tuesday, September 09, 2003 1:22 PM
> > To:    ma-eppc at yahoogroups.com; apwg at lists.plantconservation.org
> > Subject:    Killer plant- spotted knapweed poisons rivals-  article
> > NYTimes
> > 
> > 
> > September 9, 2003
> > 
> > 
> > 
> 
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