cortinarius and amanitas from Spain

Regis.Courtecuisse Regis.Courtecuisse at
Mon Dec 16 13:07:21 EST 1996

In article <v02140b04aed7cb6d4a12@[]>, 
jmurphy at TFM.FMNH.ORGMurphy says...
>Dear fellow mycologists;
>        Regarding the recent discussion concerning use of fungi as a
>resource, and concerns about the conservation of fungi...
>        I admit to sometimes holding strong environmentalist tendencies,
>and I certainly relate to R. Courtecuisse's  sentiments -
>        But what concerns me is the scientific documentation for these
>        Absence of evidence is not evidence of absence, but in 
developing informed management plans for fungi we really need more data. 
>Does anyone know of studies which have concluded a detrimental effect on 
fungi by collecting?
>Jack Murphy
Hi !
Thanks Jack for the precision. Of course I knew Eef Arnold's reference 
(but not Lorelei Norvell's one -thanks for it) and I must aggree with 
these objective studies results. I also have another reference from the 
last european meeting in Wageningen (1995) : S.Egli from Switzerland told 
something about the influence of harvesting fruitbodies on the 
macromycetes. Unfortunately, I don't have the summary at hand at the 
moment but I (think I) remember (well) that one of the conclusions 
concerned the trampling on the soil ground, which was harmful to mycelia 
though compacting the soil. (I promise to look for the paper and to post 
the result of my investigations with this communation).
The point is to know if people collect fungi and will ever collect them 
without destroying mycelia (some methods of collecting are really harmful 
and short-sighted) and without walking, trampling and compating too 
But, I aggree that my reaction was perhaps a little bit too much 
aggressive and pessimistic. Nevertheless, I would be enclined not to be 
decidedly optimistic. We must keep a strong concern about the collecting 
practices and the potential threat they apply on forest and fungal 

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