[NatureNS] tree biomass fuel ... calcium loss also critical in

Date: Thu, 11 Apr 2013 12:35:17 -0300
From: David Patriquin <patriqui@DAL.CA>
To: naturens@chebucto.ns.ca, Mary Macaulay <marymacaulay@hotmail.com>
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In addition to concerns raised by the Nature article, a multi-authored  
paper  published in the Policy Forum of Science in 2009 pointed out  
that there is a critical accounting error in the Kyoto Protocol that  
allows biomass energy to be treated as carbon neutral, regardless of  
the source. The error is very large for forest biomass.

Searchinger. T.D. et al T.D. et al., 2009. Fixing a Critical Climate  
Accounting Error Science 23 October 2009: Vol. 326. no. 5952, pp.  
527-528

In addition, we should be concerned about calcium losses in NS. NS  
forests are the most or amongst the most intensively harvested in  
Canada, half or more of our soils by area are very calcium poor and  
highly susceptible to soil acidification, and the area is stressed by  
acid rain. There are worrying signs that for large areas of Nova  
Scotia (esp in the SW), significant declines in productivity or other  
effects of low calcium may be only 1 or 2 rotations away, if not  
already beginning to happen.  Further, climatic warming can be  
expected to exacerbate these stresses, e.g., because the deciduous  
species expected to be favoured have higher calcium requirements than  
softwood.

Intensive forest harvesting can only exacerbate this problem, both by  
direct removal of nutrients and though increased losses from leaching.

Loss of salmon from many of our rivers is attributed to acid rain but  
also reflects reduced levels of calcium in the upland soils.

Birds are also affected, see
http://news.psu.edu/story/155790/2011/09/15/research-shows-soil-calcium-limits-forest-songbirds

...we have  many reasons to be concerned about continued clearcutting  
in NS, and the obscurification of this issue by the current government.










Quoting Mary Macaulay <marymacaulay@hotmail.com>:

> One of The Economist leaders this week warns against the trend  
> toward using forest biomass as fuel (they call it environmental  
> lunacy). It's a great article on page 71 for those who subscribe
> or at this link
> http://www.economist.com/news/business/21575771-environmental-lunacy-europe-fuel-future
>
> Please circulate this widely. It's nice to see this highly respected  
> journal calling an axe an axe.
>
> Mary Macaulay



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