Abstract
AbstractThe lack of precise data on the environmental requirements of the conspicuous fungus with a northern distribution limit in Slovakia, Pogonoloma macrorhizum, initiated our study. Its identity was verified by sequencing of ITS and 28 S nrDNA regions. The analysis of trophic status by stable-isotope ratio of carbon and nitrogen suggested that the species is probably ectomycorrhizal. For the seventeen sampling sites, environmental data were obtained and information on landscape development and management were retrieved from historical maps and aerial orthophotographs. All these parameters were analysed by multivariate ordination methods. In Slovakia, P. macrorhizum is found in thermophilous to mesophilous stands on acidic soils with a pH ranging from 4.1 to 6.2. These habitats are dominated by Quercus cerris, with non-frequent tree taxa of Carpinus betulus and Quercus petraea agg. The key environmental drivers shaping the habitat of P. macrorhizum were identified as time since deforestation, with the presence of old Q. cerris individuals (former solitary trees of pastures) and soil characteristics. The fungus appears to be a species of transitional habitats historically affected by grazing. These transitions occur between thermophilic and mesophilic sites, including oak forest communities, dry steppic grasslands and forest edges, as well as spontaneously overgrown pastures and forests with a closed canopy. It is regrettable that the Q. cerris stands in Slovakia are under threat, particularly because of felling and the lack of grazing in forests. Furthermore, recent silvicultural practices have resulted in the replacement of oaks (Quercus spp.) by hornbeam (Carpinus betulus) and the formation of closed stands.
Funder
Technical University of Zvolen
Publisher
Springer Science and Business Media LLC
Reference91 articles.
1. Alvarado P, Moreau PA, Dima B, Vizzini A, Consiglio G, Moreno G, Setti L, Kekki T, Huhtinen K, Liimatainen K, Niskanen T (2018) Pseudoclitocybaceae fam. nov. (Agaricales, Tricholomatineae), a new arrangement at family, genus and species level. Fungal Divers 90(1):109–133. https://doi.org/10.1007/s13225-018-0400-1
2. Ambrosio E, Zotti M (2015) Mycobiota of three Boletus edulis (and allied species) productive sites. Sydowia 67:197–216
3. Ambrosio E, Cecchi G, Zotti M, Mariotti MG, Di Piazza S, Boccardo F (2018a) An annotated checklist of macrofungi in broadleaf Mediterranean forests (NW Italy). Acta Mycol 53(2):1109. https://doi.org/10.5586/am.1109
4. Ambrosio E, Mariotti MG, Zotti M, Cecchi G, Di Piazza S, Feest A (2018b) Measuring macrofungal biodiversity quality using two different survey approaches: a case study in broadleaf Mediterranean forests. Ecol Indicat 85:1210–1230. https://doi.org/10.1016/j.ecolind.2017.11.054
5. AMS (2015) Database of fungi in Austria. Edited by Dämon W, Hausknecht A, Krisai-Greilhuber I, Leucopaxillus macrorhizus (Sacc.) Bon. http://austria.mykodata.net/Taxa_map.aspx?qvtaxIdTaxon=204748and