Importance of different tree fractions for epiphytic lichen diversity on Picea abies and Populus tremula in mature managed boreonemoral Swedish forests

Lecidea hercynica Hauck & Schmull is described as a new species from Germany. It is characterized by a poorly developed or bullate to verrucose, areolate thallus on whitened spots of the substratum, numerous plane to yellowish brown to black, convex apothecia with a persistent margin, Micarea type-like asci, and by the presence of atranorin and protocetraric acid. It does not belong to Lecidea s. str., but is provisionally placed in Lecidea s. lat. until a taxonomic treatment of the whole group has been carried out. Lecidea hercynica is widespread in high-elevation forests of Picea abies in the Harz Mountains, where it grows preferably on decorticated wood in open situations.

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ФІТОТОКСИЧНІ ВЛАСТИВОСТІ ДЕЯКИХ ДЕРЕВНИХ РОСЛИН

World Science ◽

10.31435/rsglobal_ws/31032019/6404 ◽

2019 ◽

Vol 1 (3(43)) ◽

pp. 40-45

Author(s):

Мегалінська Г. П. ◽

Пакірбаєва Л. В. ◽

Білик Ж. І. ◽

Даниленко Є. В. ◽

Гатальська Є. О.

Keyword(s):

Picea Abies ◽

Pinus Sylvestris ◽

Quercus Robur ◽

Betula Pendula ◽

Robinia Pseudoacacia ◽

Water Extract ◽

Populus Tremula ◽

Allelopathic Effect ◽

Carpinus Betulus ◽

Phytotoxic Activity

The results of the study of phytotoxic effects of water extracts from Pinus sylvestris L., Betula pendula Roth, Quercus robur L., Picea abies (L.) Karst. P. excelsa Link, Carpinus betulus L., Robinia pseudoacacia L., Populus tremula L., Crataegus submollis L. are presented. For а comparison of the phytotoxic activity of the investigated plants was used to measure the change in the intensity of the mitotic division, depending on the concentration of aqueous extraction of plant material (tangent trend curve of cytostatic activity). According to this parameter, the following row of phytotoxic activity of wood species can be ordered: Populus tremula, Betula pendula, Robinia pseudoacacia, Carpinus betulus, Acer platanoides, Tilia cordata, Pinus sylvestris. Water extract Quercus robur and Picea abies have discovered a phyto-stimulating effect. The results of the study allow us to discuss the possibility of introducing the parameter of the phytotoxicity coefficient to determine the allelopathic effect in the tree-tree system.

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Edge Effects on the Epiphytic Lichen Flora of Picea Abies in Middle Boreal Finland

The Lichenologist ◽

10.1006/lich.2000.0282 ◽

2000 ◽

Vol 32 (4) ◽

pp. 387-398 ◽

Cited By ~ 48

Author(s):

Laura Kivistö ◽

Mikko Kuusinen

Keyword(s):

Species Diversity ◽

Picea Abies ◽

Forest Edge ◽

Lichen Species ◽

Forest Fragments ◽

Epiphytic Lichen ◽

Clear Cut ◽

Old Growth Forest ◽

Forest Margin ◽

Lichen Flora

AbstractThe edge effect of large clear-cuts on the epiphytic lichen flora of Picea abies in old-growth forest fragments was studied at three south-exposed and four north-exposed forest clear-cut edges in middle boreal Finland. The sampling of the species cover on trunk bases was carried out along four transects parallel to the forest margin: (1) at the forest margin, (2) 10 m from the margin, (3) 20 m from the margin and (4) 50 m from the margin. In addition, control trees were sampled > 100 m from nearest edge. Our results showed that the epiphytic lichen species diversity was lower at the forest margin than in the forest interior for sunny south-facing edges, while the species diversity in north-exposed edges was independent of the distance from the forest margin. The cover of a common and abundant lichen species, Parmeliopsis ambigua, was slightly higher at the forest edge and decreased inside the forest for both south-exposed and north-exposed edges.

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Response of Evernia prunastri to urban environmental conditions in Central Europe after the decrease of air pollution

The Lichenologist ◽

10.1017/s002428291200062x ◽

2013 ◽

Vol 45 (1) ◽

pp. 89-100 ◽

Cited By ~ 15

Author(s):

Anna LACKOVIČOVÁ ◽

Anna GUTTOVÁ ◽

Martin BAČKOR ◽

Peter PIŠÚT ◽

Ivan PIŠÚT

Keyword(s):

Air Pollution ◽

Central Europe ◽

Photosynthetic Pigments ◽

Urban Environments ◽

Physiological Status ◽

Epiphytic Lichens ◽

Evernia Prunastri ◽

Epiphytic Lichen ◽

Lichen Diversity ◽

Positive Correlations

AbstractThe epiphytic lichen Evernia prunastri is sensitive to air pollution and reacted by total retreat to the worsening of air quality during the peak of SO2 pollution in Central Europe (1950s–1990). Since 1990, after a significant decrease in air pollution, epiphytic lichens recolonized previously polluted areas, including E. prunastri. We investigated the physiological status of E. prunastri, transplanted for six months in 34 sites in the urban area of Bratislava (Slovakia) under current conditions. The content of chlorophylls, cortical and medullar secondary metabolites and soluble proteins were explored. We then examined the relationship of these parameters with the environmental quality status, reflected by the diversity of epiphytic lichens. The results showed that the physiological status of E. prunastri did not change significantly after exposure. Positive correlations were found between lichen diversity in the sampling sites and physiological parameters (photosynthetic pigments and phaeophytinization quotient) in the transplants. Transplants from sampling sites with a greater proportion of nitrophilous lichens displayed a decrease in photosynthetic pigments. Sites where E. prunastri naturally occurred had a lower proportion of nitrophilous species in comparison to sites where E. prunastri was not present. This suggests that the indicator species E. prunastri may also recolonize sites with low eutrophication in urban environments under decreased air pollution, and the information on its presence can help to assess the pressure caused by nitrogen excess.

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