FIG. 2.

Fungi associated with alder leaves during decomposition at four sites (L1, L2, L6, and L7) in the Ave River. (A) Fungal biomass estimated from ergosterol concentrations (milligrams of fungal carbon per gram of leaf detrital carbon). (B) Fungal production determined from rates of [1-¹⁴C]acetate incorporation into ergosterol (milligrams of fungal carbon per gram of leaf detrital carbon per day). (C) Sporulation rate of aquatic hyphomycetes (number of conidia per microgram of leaf detrital carbon per day). Values are means and SEM (n = 3).