Abstract

CARRANZA-V., J.; DISTEFANO-G., J.F.; MARIN-M., W.  and  MATA-H., M.. Comparative study of macrofungi on dead oak wood in two neotropical montane forests in Costa Rica. Polibotánica [online]. 2018, n.45, pp.35-56. ISSN 1405-2768.  https://doi.org/10.18387/polibotanica.45.4.

The presence of macrofungi on dead oak wood was studied in two neotropical montane forests in Costa Rica during 2008-2012. The two sites chosen for the study were a mature forest (approx. 200 yr. old) and a secondary forest (32 yr. old). One hundred and eighty-one taxa (80 species and 101 morpho species) were identified. A similar number of species was present in both forests, but there were some differences in the species composition of each forest. According to the results, it is suggested that the percentage of different and shared species could each represent a third of the diversity present in these forests. Xylobolus subpileatus and Hymenochaete rubiginosa were the most common species in both forests. Several ectomycorrhizal species were found growing on logs, and the genera most commonly found were: Inocybe, Cortinarius, Laccaria, Leccinum and Russula. The relationship between fungal fructifications and the environmental conditions present during the study period is discussed, as well as the importance of conserving fragments of secondary forest.

Keywords : dead wood macrofungi; neotropical montane oak forests; fungal diversity; fungal dynamics; oaks; Costa Rica; conservation.

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