Plants' healthiness assessment as part of the environmental monitoring of protected mountainous area in the example of Karkonosze (Giant) Mts. (SW Poland)

Abstract

The aim of phytopathological monitoring is to check the healthiness of plants and observe the changes that occur in their populations. In the vast majority, these types of observations are conducted in agriculture and forestry. An interesting aspect of phytopathological monitoring is the assessment of the origin of the plant species. The research of fungal communities (including pathogens) in plants may, for example, indicate the relic nature of the plant species. Reduction of the occurrence or disappearance of fungi species associated with its host plant can evidence slow decline of their habitats. This applies mainly to arctic-alpine fungal species. On the other hand, for some plant hosts, colonization of their organs by polyphagous fungi is being recorded. One such example is the downy willow, on which six species of fungi were found in the Karkonosze Mts. In 2014, there were no fungi found on this plant. However, comparing the species composition of fungi associated with downy willow given by Schroeter (1908) to the contemporary one and to the study results of other researchers, a decrease in the number of fungi species is clearly visible. This may be related to the environmental pollution, which took place in the Sudetes in the second half of the twentieth century. For instance, the species of the genus Rhytisma colonize the leaves of trees and shrubs and are particularly sensitive to the concentration of SO2 in the air, but nobody has looked for this fungus on this host in the past. Yet, presently, we were able to find Rhytisma fungus in Karkonosze Mts. Phytopathological monitoring was conducted in the years of 2014-2015 in the sub-alpine zone of the Karkonosze (Giant) Mts. It has been shown that, compared to similar studies conducted in the 1990s of the twentieth century, the species composition of fungi infesting Rubus chamaemorus and Betula carpactica has changed. Is this the beginning of changes that will occur in populations of plants?

Keywords: Environmental monitoring; Fungal diseases; Pathogenic fungi; Plant diseases.

Fig. 1

General view of the locations of the studied glacial cirques in the Karkonosze Mts. range and detailed maps of their situation in the western part and eastern part of the range Explanations: CZ Czarny Kocioł, Ł Kocioł Łomniczki, MSn Mały Śnieżny Kocioł, MSt Kocioł Małego Stawu, WSn Wielki Śnieżny Kocioł, WSt Kocioł Wielkiego Stawu; 1 borders of Karkonosze National Park, 2 state borders; (prepared by Ewa Fudali 2012)

Fig. 2

Gantt chart showing incidence of disease symptoms (green) on plants growing in LGB in Jagniątków

Fig. 3

Gantt chart showing incidence of disease symptoms (green) on plants growing in LGB in natural locations in KNP