The Impact of Nitrogen Pollution in the Agricultural Landscape on Lichens: A Review of Their Responses at the Community, Species, Biont and Physiological Levels

Lichenized fungi are widely used as bioindicators owing to their sensitivity to various anthropogenic impacts. Increased nitrogen deposition affects the occurrence, abundance and distribution of lichens. The main sources of nitrogen in the agricultural landscape are ammonia (NH3) and the ammonium cation (NH4+). Livestock farming and the use of organic and mineral fertilizers are primarily responsible for the emissions of these compounds. N in excess can negatively impact lichen biota and lead, for example, to species decline, impoverishment of lichen communities or unbalanced symbiosis. However, there is also evidence for certain opposite effects, in particular at medium N concentrations. Positive influences may be manifested, for example, by higher chlorophyll a concentrations, or by a greater lichen diversity being supported by the coexistence of lichens with different trophic requirements. Indicator values of lichens in relation to N input are exhibited, for example, by some biont markers (the contents of ergosterol and chlorophyll a), particular species, such as Xanthoriaparietina, or trophic functional groups (oligotrophilous and nitrophilous lichens). Gaps identified in the current knowledge are discussed

NOWE STANOWISKO DIPLOSCHISTES MUSCORUM (Scop.) R. Sant. na NIZINIE WIELKOPOLSKO-KUJAWSKIEJ

Diploschistes muscorum (Scop.) R. Sant. has been found in the southern part of the Wielkopolsko-Kujawska Lowland. So far, in western and central Poland the species has been reported in few localities

Lichens in the agricultural land of Poland – diversity, threats, and protection: a literature review

Agricultural landscapes provide interesting habitats and substrates occupied by lichens. Nevertheless, there are still gaps in knowledge about diversity of lichenized fungi in rural areas and factors that determine their occurrence, including anthropogenic impact. The review includes recognition of this topic in the regional context in Poland and presents literature data about species diversity and habitat groups. Human influences in terms of their significance for lichens disappearance as well as preservation of the lichen biota are analyzed. A list of threatened lichens found in rural areas as well as a proposal for protection of the lichen biota are given

Lichens and lichenicolous fungi of Magurski National Park (Poland, Western Carpathians)

The paper lists 337 species from Magurski National Park (MNP): 314 lichens, 18 lichenicolous fungi, four saprotrophic fungi and one lichenicolous myxomycete; 112 of them are new for MNP, 75 are reported for the first time for the Beskid Niski Mts, and two are new for Poland. Selected species are accompanied by taxonomic notes and remarks on their distribution in Poland and other Carpathian ranges. First records of Intralichen lichenicola, Burgoa angulosa and Verrucaria policensis and a second record of Epigloea urosperma are given for the whole Carpathian range, and Fuscidea arboricola was recorded for the first time in the Western Carpathians. Halecania viridescens and Mycomicrothelia confusa are new for the Polish Carpathians. The records of Absconditella pauxilla, Collema crispum, Licea parasitica and Rinodina griseosoralifera in MNP are their second known localities for the range. 93 species, mainly rare or threatened in Poland, were reported from MNP in the 20th century but were not refound