Species richness and abundance of ectomycorrhizal basidiomycete sporocarps on a moisture gradient in the Tsuga heterophylla zone

Abstract

Sporocarps of epigeous ectomycorrhizal fungi and vegetation data were collected from eight Tsuga heterophylla (Raf.) Sarg. - Pseudotsuga menziesii (Mirb.) Franco stands along a wet to dry gradient in Olympic National Park, Washington, U.S.A. One hundred and fifty species of ectomycorrhizal fungi were collected from a total sample area of 2.08 ha. Over 2 years, fungal species richness ranged from 19 to 67 taxa per stand. Sporocarp standing crop ranged from 0 to 3.8 kg/ha, averaging 0.58 kg/ha, 0.06 kg/ha in spring and 0.97 kg/ha in fall. Sporocarp standing crop and fungal species richness were correlated with precipitation. These results demonstrated that ectomycorrhizal fungal sporocarp abundance and species richness can be partly explained in terms of an environmental gradient.

Ectomycorrhizal communities in a Mediterranean forest ecosystem dominated by Quercus ilex: seasonal dynamics and response to drought in the surface organic horizon

“…This may suggest that our sampling effort was insufficient to detect many rare taxa. However, the dominance of rare taxa occurs in species-rich ECM assemblages of old sampled stands (old-growth stage; O'Dell et al 1999;Richard et al 2005;Smith et al 2002). The ECM communities may thus reflect more the age of the tree individuals (age of root systems) than the age of stems since the last clear-cut.…”

Empirical models for predicting the production of wild mushrooms in Scots pine (Pinus sylvestris L.) forests in the Central Pyrenees

“…These include variations in precipitation, temperature, frost, evapotranspiration, relative humidity, and water deficits [16,21,23,31,34].…”

Modelling Non-Wood Forest Products in Europe: a review

“…Since annual mushroom production varies considerably in response to weather conditions, the construction of reliable models for predicting mushroom yields requires collecting large quantities of empirical data over several years because there are multiple factors responsible for high temporal variation in mushroom productions: precipitation, temperature, frost, evapotranspiration, relative humidity, and water def icits (Wilkins and Harris, 1946;Ohenoja, 1993;O'Dell et al, 1999;Straatsma et al, 2001;Martínez de Aragón et al, 2007).…”