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Aug. 15, 2001

Chief, Division of Scientific Authority
U.S. Fish and Wildlife Service
4401 North Fairfax Drive
Room 750
Arlington, Virginia
22203-1610

Recommendations on Species To
Consider for Changes to the CITES
Appendices

Re:  Tricholoma magnivelare

Based on my research (citation and summary results below) I do not think that Tricholoma magnivelare needs to be listed in the CITES Appendices.
The American matsutake can be sustainable harvested with proper management practices.

Thank you for considering my comments.

Daniel L. Luoma
Assistant Professor
Department of Forest Science
Oregon State University
Corvallis, OR  97331
--------------------
Reference
Eberhart, J.L., Luoma, D.L., Pilz, D., Amaranthus, M.P., Abbott, R., and
Segotta, D.  1999.  Effects of harvest techniques on American Matsutake
(Tricholoma magnivelare) production.  Abstract Book.  IXth  International
Congress of Mycology.  Sydney, Australia.

Summary

The following treatments were implemented (one time),  each on a matsutake
fruiting in each of the three blocks at two sites:

1) NH - No matsutake harvest (control)

2) BMP - Best management practice - harvest with minimal disturbance (gentle rocking and pulling)

3) SR-R - Shallow raking of litter layers to the interface with the mineral soil surface, sporocarp removal, and careful replacement of the litter

4) SR-NR - Shallow raking of litter layers, sporocarp removal and NO replacement of the litter

5) DR-R - Deep raking of the litter layers and 10 cm of mineral soil, sporocarp removal and replacement of litter and mineral soil

6) DR-NR - Deep raking of the litter layers and 10 cm of mineral  soil, sporocarp removal and NO replacement of litter and mineral soil

Results showed that careful picking had no impact on sporocarp production. The  one-time shallow raking with the litter layer carefully replaced did not differ from the control.  When expected numbers of sporocarps were calculated,  the actual production of matsutake on deep rake treatments and the shallow rake without litter replacement treatment were significantly reduced (p 0.05).

Results were consistent across the two sites with regard to the lack of effect of the BMP and a one-time SR-R treatment as compared to the control. At Diamond Lake, the more severe treatments (SR-NR, DR-R, DR-NR) showed dramatic decreases in sporocarp numbers.  We expect that the effects of repeated raking would be more severe than those reported here for a one-time raking.

Given that one-time, shallow raking with careful replacement of the litter layer is not a viable management option to implement, raking is a prohibited commercial harvesting technique.


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