JJH Katalog - Lichenological literature

36368

Paquette H.A., McMullin R.T. & Wiersma Y.F. (2024): The importance of taxonomy for determining species distribution: a case study using the disjunct lichen Brodoa oroarctica - Botany, 102(1): 10-18

Species-focused conservation requires a thorough understanding of species’ distributions. Delineating a species’ distribution requires taxonomic knowledge and adequate occurrence data. For plants and fungi, herbaria represent a valuable source of large-scale occurrence data. Advances in digital technology mean that data from many herbarium collections worldwide are now easily accessible. However, species concepts can change over time requiring herbarium records to be re-examined and databases … Read more...

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Bjerke J.W., Gwynn-Jones D. & Callaghan T.V. (2005): Effects of enhanced UV-B radiation in the field on the concentration of phenolics and chlorophyll fluorescence in two boreal and arctic–alpine lichens - Environmental and Experimental Botany, 53(2): 139-149

Lichens constitute a prominent part of the vegetation at high latitudes and altitudes, but the effects of UV-B radiation on these symbiotic organisms are not well known. In a northern boreal site (Abisko, northern Sweden), the usnic acid-producing lichens Flavocetraria nivalis and Nephroma arcticum were exposed to enhanced UV-B radiation, corresponding to 25% ozone depletion, for two and one growing seasons, respectively. They were compared with lichens grown under ambient UV-B and harvested fresh … Read more...

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Pérez-Ortega S., Verdú M., Garrido-Benavent I., Rabasa S., Green T.G.A., Sancho L.G. & de los Ríos A. (2023): Invariant properties of mycobiont-photobiont networks in Antarctic lichens - Global Ecology and Biogeography, 32: 2033–2046

Aim: Lichens are often regarded as paradigms of mutualistic relationships. However, it is still poorly known how lichen-forming fungi and their photosynthetic partners interact at a community scale. We explored the structure of fungus-alga networks of interactions in lichen communities along a latitudinal transect in continental Antarctica. We expect these interactions to be highly specialized and, consequently, networks with low nestedness degree and high modularity. Location: Transantarctic … Read more...

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Berlinches de Gea A., Verdú M., Villar-dePablo M. & Pérez-Ortega S. (2024): The combined effects of habitat fragmentation and life history traits on specialisation in lichen symbioses - Journal of Ecology, 112: 200–216

Interactions between organisms are determined by life-history traits. Ecological strategies regarding species specialisation range from generalist to highly specialised relationships. Although it is expected that habitat fragmentation's effect on species abundance and survival depends on their degree of specialisation and life-history traits, few studies have delved into the interplay between interaction specialisation, life-history traits and habitat fragmentation.Here, we investigate the combined … Read more...

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Nikolić N., Zotz G. & Bader M.Y. (2024): Modelling the carbon balance in bryophytes and lichens: Presentation of PoiCarb 1.0, a new model for explaining distribution patterns and predicting climate‐change effects - American Journal of Botany, 111: e16266 [21 p.]

Premise: Bryophytes and lichens have important functional roles in many ecosystems. Insight into their CO2‐exchange responses to climatic conditions is essential for understanding current and predicting future productivity and biomass patterns, but responses are hard to quantify at time scales beyond instantaneous measurements. We present PoiCarb 1.0, a model to study how CO2‐exchange rates of these poikilohydric organisms change through time as a function of weather conditions. Methods: … Read more...

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Fetzer J., Moiseev P., Frossard E., Kaiser K., Mayer M., Gavazov K. & Hagedorn F. (2024): Plant–soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline - Global Change Biology, 30: e17200 [18 p.]

Treelines advance due to climate warming. The impacts of this vegetation shift on plant–soil nutrient cycling are still uncertain, yet highly relevant as nutrient availability stimulates tree growth. Here, we investigated nitrogen (N) and phosphorus (P) in plant and soil pools along two tundra–forest transects on Kola Peninsula, Russia, with a documented elevation shift of birch-dominated treeline by 70 m during the last 50 years. Results show that although total N and P stocks in the soil–plant … Read more...

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Rautiainen M., Kuusinen N. & Majasalmi T. (2024): Remote sensing and spectroscopy of lichens - Ecology and Evolution, 14: e11110 [16 p.]

Lichens are combinations of two symbiotic organisms, a green alga or cyanobacterium and a fungus. They grow in nearly all terrestrial ecosystems and survive in habitats, which are very dry or cold, or too poor in nutrients to maintain vegetation growth. Because lichens grow on visible surfaces and exhibit spectral properties, which are clearly different from, for example, vegetation, it is possible to distinguish them in remote sensing data. In this first systematic review article on remote sensing … Read more...

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Meysurova A.F., Notov A.A., Pungin A.V. & Skrypnik L.N. (2024): Application of optical spectroscopy for the analysis of physiological characteristics and elemental composition of lichens of the genus Hypogymnia with different degrees of anthropotolerance - Journal of Applied Spectroscopy, 91(1): 64–75

[Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 91, No. 1, pp. 74–86] The main physiological and biochemical characteristics and elemental composition of three lichen species of the genus Hypogymnia (Nyl.) Nyl. in one habitat were studied using spectroscopic methods. The model species were placed in the following order of decreasing degree of anthropotolerance: H. physodes (L.) Nyl. → H. tubulosa (Schaer.) Hav. → H. vittata (Ach.) Parrique. The contents of chlorophylls a and b, phenolic … Read more...

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He Z., Naganuma T., Nakai R., Uetake J. & Hahn M.W. (2024): Microbiomic analysis of bacteria associated with rock tripe lichens from alpine areas in eastern Alps and equatorial Africa - Current Microbiology, 81: 115 [17 p.]

The diversity of bacteria associated with alpine lichens was profiled. Lichen samples belonging to the Umbilicariaceae family, commonly known as rock tripe lichens, were gathered from two distinct alpine fellfelds: one situated on Mt. Brennkogel located in the Eastern European Alps (Austria), and the other on Mt. Stanley located in the Rwenzori mountains of equatorial Africa (Uganda). The primary aim of this research was to undertake a comparative investigation into the bacterial compositions, and … Read more...

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Motiejūnaitė J. (2024): Lithuanian lichens and lichenicolous fungi in the herbaria of the University of Tartu (Estonia) and the University of Latvia - Botanica, 30(1): 23–30

Herbarium collections are particularly significant in countries where systematic studies of specific taxonomic groups have not been carried out, such as in the case of lichens in Lithuania. Collections prior to the 1990s are scarce, so all historical material is of great value. This paper presents the results of a study of lichen collections in the herbaria of the University of Tartu (TU) and the University of Latvia (RIG). A total of 425 herbarium envelopes (84 RIG and 341 TU) were examined. A total … Read more...