1. The site specific variables that correlate with the distribution of the Pacific Golden Chanterelle, Cantharellus formosus Sarah E. Bergman and David L. Largent

2. Introduction C. Formosus is ectomycorrhizal Commercial harvesting of C. formosus is an important industry. Concerns about overharvesting

3. Introduction Ecological information is needed for habitat conservation and management. Studying habitat requirements leads to a definition of variables correlated to presence of basidiomata. Woody debris, moss-free humus, open canopy.

4. Materials and Methods Study conducted at Patricks Point CA 55 plots containing basidiomata, 60 not containing basidiomata 30 of each selected

5. Materials and Methods Variables: -Duff depth -Soil classification -Soil OM conten, pH, exchangable bases and exchangable acidity -% ground cover, canopy cover, tree height and DBH

6. Materials and Methods Duff and soil sampled for each plot. Duff depth recorded. Soil analyzed for OM content, pH, exchangable bases and exchangeable acidity. Domin-Krajina cover abundance scale used.

7. Materials and Methods Statistics Chi-square- soil classification Logistic regression- habitat variables

8. Results No relationship- soil class, tree height, DBH, OM, ex. bases, canopy cover. Significant variables- duff depth, exchangeable acidity and % cover of bare humus/needles. Chanterelles associated with : Low/Moderate duff depth (~ 11cm) Low exchangeable acidity (~2.1 cmol/kg) High % cover of bare humus/needles (30%)

9. Discussion Coarse woody debris, open canopy not related, but moss-free humus/needles was. Duff is important for several reason: oxygen, temp and pH buffering, moisture retention Canopy cover not correlated, but…

10. Discussion Identify habitats by: Moderate amounts of duff Low acidity Bare humus