[NatureNS] Forest Persectives, Gary on my mind

Date: Tue, 30 Oct 2012 16:05:24 -0300
From: David Patriquin <patriqui@Dal.Ca>
To: naturens@chebucto.ns.ca, David Patriquin <patriqui@Dal.Ca>
Cc: naturens@chebucto.ns.ca, Dusan Soudek <soudekd@ns.sympatico.ca>
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Of course I meant Gary Schenider, not Gary Saunders, as the person  
from McPhail Woods, Thanks to Bob M. for pointing that out & apologies  
to both Garys!


Quoting David Patriquin <patriqui@dal.ca>:

> In Halifax both American Elm and Scotch Elm are common, possibly  
> others. American elm is highly susceptible to DED, Scotch apparently  
> has some resistance. I think it is only a matter of time before most  
> of the American elms go down. The restricted species diversity of NS  
> forests and  rising issues with both native pests (set off by  
> climate change) and exotic pests in N.A.  is a major reason in my  
> not-professional-opinion for introducing more species from the south  
> as our climate becomes suitable for them.
>
> Speaking of pests, Gary Saunders of McPhail Woods in PEI gave a  
> wonderful presentation to the NS Wild Flora Society last week on   
> "Restoring the Acadian Forest" in which he mentioned that an  
> invasive pest is aggressively chewing down witherod (wild raisin) in  
> PEI, something I think we should be on the lookout for in NS.    I  
> believe it is the Viburnum Leaf Beetle,  
> http://www.gov.pe.ca/af/agweb/index.php3?number=74367&lang=f
> It has been sighted in Nova Scotia on domestic Vibrunums (2005), and  
> possibly as early as 1924.
> http://www.hort.cornell.edu/vlb/csphoto.html
> http://cat.inist.fr/?aModele=afficheN&cpsidt=18705014
> http://www.entsoc.org/PDF/Pubs/Periodicals/AE/AE-2007/Summer/Weston.pdf
>
> - David Patriquin
>
>
>
>
>
>
> Quoting Dusan Soudek <soudekd@ns.sympatico.ca>:
>
>>   I've been following the debate triggered by G.L. Saunders' and  
>> Nick Hill's recent opinion pieces in the Herald on the past and the  
>> future of the Acadian Forest, and am somewhat surprised that the  
>> American Elm, our most endangered native tree species, hasn't been  
>> mentioned once.
>>  This species once dominated the rich alluvial lands along the  
>> lower courses of our rivers. These lands were extremely attractive  
>> to early European settlers, and many were cleared for agriculture  
>> centuries ago. The second blow to the American Elm was the arrival  
>> of Dutch Elm Disease in the 20th century, which wiped out much of  
>> the remnant population.
>>  Yet one can still find an apparently healthy elm tree in the wild  
>> (or the semi-wild) here and there. Are these rare individuals  
>> healthy due to chance alone, i.e. their relative isolation from  
>> infected conspecific individuals, or do they represent resistant  
>> genotypes?
>>  Elm habitat in our province is under-represented in our system of  
>> protected areas, because much of it is being farmed, inhabited, or  
>> simply isn't "wild" enough to be protected. There seems to be no  
>> local effort to re-establish resistant
>> genotypes of American Elm into the Acadian Forest Region.
>>  Paradoxically, elm trees are quite common on the streets of  
>> Halifax. What species are they? Are any of them American Elm?
>> If so, what might be their provenance?
>>  Dusan Soudek
>>


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