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This is an introductory work of cyclic examination of lichenflora of Biebrza National Park. The area of the Emperor’s Road of Biebrza Lower Basin was examined. The presence of 92 species from 17 families was observed. The most numerous representatives were the Cladoniaceae family (21 taxons) and Lecanoraceae (15 taxons). Epiphytic lichens (59 species) were dominant among 4 ecological groups. The richest epiphytic flora was found in Populus tremula (26 species) and Populus nigra (12 species). Crust thalluses were the most representative morphological form with 43% of all described species. The examined area revealed 1 species, extinct in the rest of Poland, 12 dying out species, and 16 extinct-threatened species. The area of the Emperor’s Road can be qualified to the 7th zone of air purity as species of Usneaceae family occur there. Lichen collection was carried out in 2000-02. Taxonomy was based on standard methods used in lichenology. Identification was based on nomenclature by Fałtynowicz . Extinct-threatened species were chosen on the basis of “The Red List” by Cieśliński. The study of the Emperor’s Road lichenflora of Biebrza National Park is an introductory record for future comparative studies. It will also enable us to follow changes caused by an increase in anthropopressure and specifically air contamination.
Epiphytic lichen distribution and diversity were investigated in seven localities in the centre of Cracow (South Poland). Field studies were carried out in the years 2007–2009. A total of 39 species were recorded at 434 sites; 6 species are new to Cracow. Compared to previous surveys, the overall situation has generally improved, with higher lichen species richness and cover rate. The area of former ‘lichen desert’ in the city centre has disappeared and it has been colonized by SO2 sensitive macrolichen species. Dominance of nitrogen- and dust-tolerant species has been observed. The health of lichen thalli has improved and many young specimens were recorded in the study area. These changes follow air quality improvement, mainly the SO2 decline, during the last twenty years. Transport-related NOx and dust have become the main pollutants in the centre of Cracow. The recolonization process seems to be not completed yet and further improvement in lichen distribution and diversity is expected. Thus long-term biomonitoring is required.
The objective of the study was to evaluate the impact of nitrogen fertilizer industry pollution on epiphytic lichen communities. The study plots are located in Scots pine Pinus sylvestris stands at different distances (up to 12 km) to the northeast and southwest of the nitrogen fertilizer producer plant in central Lithuania. The stands were semi-mature and mature and growing on sandy sites of the Vaccinio-myrtillosa site type. Species richness, composition and index of atmospheric purity (IAP) were assessed at each site. Species diversity was calculated by grouping species by their ecological values for eutrophication. Species frequency was calculated according to lichen life strategies (growth forms, photobionts, reproductive strategies). Twenty lichens species were recorded in the surrounding of the pollution source. An increase in species richness and diversity was found with increasing the distance up to 10 km from the plant. Based on IAP values three zones (< 5, 5–10, > 10 km) with different air pollution were distinguished. The increase in species richness was related to the increase in eutrophication-tolerating species along with sensitive to pollution species. The lichen diversity value of nitrophytic species (LDVnitro) increased with increasing distance from the pollution source. Foliose and fruticose growth forms were both positively significantly related with the distance, being common in the plots with lower level of pollution. Crustose lichens are less sensitive to this factor and the prevalence of crustose thalli was found in the nearest vicinity to the plant.
Heavy metal accumulation, physiological status and resistance against Zn and Pb were compared in lichens occurring in metalpolluted (Silesian Upland, S. Poland) and unpolluted (forest complex, NE Poland) areas. Sandy soil near Zn/Pb ore mine had significantly lower (5–35-times) metal content than dolomite-containing ground of mine tailing dump in polluted area (S. Poland). Metal contents in native lichens sampled from those sites followed the same pattern. Total Zn, Pb, Cd and Cu contents in native lichens recorded in two sites of Zn/Pb mining area varied broadly and were considerably higher than in lichens from a control unpolluted site. Independently of the sampling site, epiphytic lichens of higher surface to biovolume ratio (i.e. Candelariella Mull. Arg., Lepraria Ach.) accumulated much more metals (6.05 – 9.57 mg g–1 DW) than lichens of a lower ratio (e.g. 0.25 mg g–1DW in Peltigera didactyla (With.) J.R.Laundon or 0.29 mg g–1 DW in some Cladonia Hill ex Browne). In general, the studied lichens accumulated metals in the following order: Zn>Pb>Cd≥Cu, that was in agreement with the metal content in soils. However, Cladonia furcata (Huds.) Schrad. From tailing dump contained 2-fold more Pb than Zn. Internal Zn and Pb contents (non-exchangeable fraction) in the studied lichens ranged broadly from 17 to 90% of the total metal content. Phaeophytinisation quotients (PhQ), total chlorophyll contents and chl a/b ratios in the native lichens from polluted sites ranged 0.84 – 1.44; 0.514 – 4.858 mg g–1 DW and 2.09 – 5.56, respectively. Experimental exposure of selected species (Hypogymnia physodes (L.) Nyl., Hypocenomyce scalaris (Ach.) Choisy, Lepraria elobata Tonsberg, L. incana (L.) Ach., sampled from the both polluted and unpolluted sites, to high doses of Zn2+ and Pb2+ (0.36 or 0.72 mmol g–1 DW) revealed higher resistance of lichens from the Zn/Pb-polluted sites than con-specific lichens from the unpolluted one. The resistance of epiphytic species from the polluted area to high doses of Zn2+ and Pb2+ increased as follows: H. physodes
Along the north-south transect crossing much of the distribution of the Pinus sylvestris forests in Europe, 22 epiphytic macrolichen species were identified. Three of them, Hypogymnia physodes, Imshaugia aleurites and Parmeliopsis ambigua had wide distribution. Analysis of chemical element contents in H. physodes and corresponding pine bark samples demonstrated relatively high correlation. Elements such as copper, nickel, cadmium, sodium and phosphorus had higher concentrations at the Kevo (FN1) site and lead, iron and sulphur content was higher at Polish forest sites in southern part of the transect.
The influence of air pollution on epiphytic lichens in Košice city has been studied. We observed differences in number of species as well as lichen abundance at sites close to a steel factory south of the city, the city center, and peripheral parts north of the city. For the city center and sites close to steel factory, lichens more tolerant to pollution from Zone 3-4 were typical. However, on the north periphery of the city (site “Alpinka”) we found even Ramalina fastigiata, a typical member of zone 7, which include lichens very sensitive to air pollution [30]. We demonstrated by chlorophyll analysis of transplanted Hypogymnia physodes, that chlorophyll a degradation (expressed as ratio of OD 435/OD 415) negatively correlates with degree of lichen diversity and abundance at the studied sites. Using EDX-microanalysis we determined amounts of elements in lichen thalli of Lecanora chlarotera, Physcia tenella and bark of the tree Populus tremula (lichen substrate) near U.S. Steel in Košice due to determine the chemical nature of air pollution. Similarly, we analyzed the amount of these pollutants in control lichens Flavoparmelia caperata, Ramalina fastigiata and Physcia aipolia, grown in northern peripheral parts of the city. We demonstrated possibilities to parallel the use of several methodologies in assessment of air pollution by lichens in urban areas with intensive industry.
The paper contains the results of scientific research in the Zdrojowy Park in Cieplice. General aims of the studies were analysis of the lichen flora and estimation of the environmental condition of the park using lichens as bioindicators.
Park Szczytnicki is the biggest park in Wrocław city, and one of the largest in Europe. On this area, 35 species of lichens and 1 of lichenicolous fungus (Lichenoconium lecanorae) have been found. Same of recorded lichen species, e.g. Bryoria fuscescens and Usnea hirta are rare and endangered in Poland, particularly in the cities.
A list of 154 lichen species recorded up to now in the Kleśnica Stream Valley (Śnieżnik Massif, Sudety Mts.) is presented. As a result of the present investigations, 111 taxa growing on various substrata: trees, calcareous and siliceous rocks, soil, mosses and plant debris have been found. Some of them, e.g. Anaptychia ciliaris, Melanelia glabra, Parmelina quercina, Ramalina fastigiata and Solorina saccata are very rare or threatened in Poland.
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