Mycorrhizal and saprotrophic macrofungi in declining sacred-fir stands.
Macrofungal fruit bodies from 3 sacred-fir (Abies religiosa) stands with different degrees of forest decline were collected in Mexico during September-October, 1994. Mycorrhizal and saprotrophic populations were compared in relation to the degree of stand damage. Data indicated that species diversity was higher in the least damaged stand, followed by the most damaged stand. However, predominant species in the least damaged stand were mycorrhizal, while in the most damaged stand a majority of species were saprotrophs. The macrofungi found in the stands are listed.