The macrofungal diversity and community of Atlantic oak (Quercus petraea and Q. robur) forests in Ireland

The oak species Quercus petraea and Q. Robur are dominant canopy tree species of native deciduous forests in Ireland and coastal regions of Western Europe. These forests are typically plant species-rich, and can also have a rich fungal flora. This survey examined macrofungi found in five native oak sites across Ireland over three years. Overall, 94 macrofungal species belonging to 39 genera were discovered with Mycena, Lactarius, Russula and Cortinarius the most species-rich genera. The species accumulation curve did not show signs of levelling off, indicating that more sampling would reveal more new species. Species richness estimation using the Chao2 estimator indicated that up to 135 species may be present across all of our plots, with individual plots receiving estimates from 19 to 61 species per plot. Sampled-based rarefaction analysis showed no significant differences in macrofungal species richness between our plots. The five most common species were Laccaria amethystina, L. laccata, Stereum hirsutum, Armillaria mellea and Cortinarius flexipes. Comparisons of the results with results from oak forests in similar regions found that the communities in Great Britain were most similar to those found in Ireland. There were some key oak forest distinguishing fungal species from the family Boletaceae lacking from Irish oak forests. It is hypothesised that the historic deforestation of Ireland, caused a reduction of suitable habitats for Irish oak associated macrofungi, leading to the unspecific mycota found in the oak forests of this study. The threats to Atlantic oak forests in Ireland are briefly discussed. Las especies de Quercus petraea y Q. Robur se encuentran en bosques de Irlanda y regiones de influencia atlántica de Europa Occidental. Estos bosques, típicamente ricos en especies de plantas, presentan una abundante micobiota. Este estudio examina la diversidad de macromicetes en cinco bosques naturales de roble en Irlanda durante un periodo de tres a os. En total se registraron 94 especies pertenecientes a 39 géneros, siendo Mycena, Lactarius, Russula y Cortinarius los de mayor presencia. La curva de acumulación de especies no mostró signos de nivelación, por lo que un mayor muestreo podría revelar la presencia de otras especies. La estimación de la riqueza de las especies usando Chao2 indicó que en el conjunto de las áreas estudiadas podrían aparecer hasta 135, con una media estimada de 19 a 61 especies por área. Un análisis de rarefacción no mostró diferencias significativas entre la riqueza de especies de macromicetes de las áreas estudiadas. L