[APWG] NEWS: Cheatgrass facilitates spillover of a seed bank pathogen onto native grass species

[Wayne Tyson]

Please Note:

Three different attempts to download this publication from the link supplied 
failed.

WT


----- Original Message ----- 
From: "Olivia Kwong" <plant at plantconservation.org>
To: <apwg at lists.plantconservation.org>
Sent: Tuesday, December 29, 2009 9:02 AM
Subject: [APWG] NEWS: Cheatgrass facilitates spillover of a seed bank 
pathogen onto native grass species


> http://www.treesearch.fs.fed.us/pubs/34171
>
> Title: Cheatgrass facilitates spillover of a seed bank pathogen onto
> native grass species
> Author: Beckstead, Julie; Meyer, Susan E.; Connolly, Brian M.; Huck,
> Michael B.; Street, Laura E.
> Date: 2009
> Source: Journal of Ecology. 98: 168-177.
>
> Description: Attack by pathogens can have ecological consequences for
> plants at many scales, such as the individual, population and community
> scale, although the latter is the least studied. Community-level
> consequences of disease in natural plant communities can drive
> facilitation in succession (Van der Putten, Van Dijk & Peters 1993),
> maintain species diversity in tropical rain forest (i.e. Janzen-Connell
> hypothesis; Clark & Clark 1984) and promote exotic invasion via negative
> feedback loops (Callaway et al. 2004). The pathogens involved in the above
> community-level interactions are often restricted to a narrow host range
> and target the seedling or reproductive stage. Although these studies are
> useful in providing an understanding of the consequences of disease in
> natural plant communities, they do not address the dynamic and complex
> consequences of disease caused by multiple-host pathogens, nor do they
> address pathogens that target the critical seed stage.
>
> See the link above for the copy of this publication.
>
>
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>
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> opinion of the individual posting the message.


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