Page 5 of 3639 Results 41 - 50 of 36381
Id/Author/Year/TitleOrder by:  Year  Id  Author  Title
36278
Makhnykina A.V., Vaganov E.A., Panov A.V., Koshurnikova N.N. & Prokushkin A.S. (2024): The pulses of soil CO2 emission in response to rainfall events in Central Siberia: revisiting the overall frost-free season CO2 flux - Forests, 15(2): 355 [16 p.]

Boreal forests nowadays act as a sink for atmospheric carbon dioxide; however, their sequestration capacity is highly sensitive to weather conditions and, specifically to ongoing climate warming. Extreme weather events such as heavy rainfalls or, conversely, heat waves during the growing season might perturb the ecosystem carbon balance and convert them to an additional CO2 source. Thus, there is an urgent need to revise ecosystem carbon fluxes in vast Siberian taiga ecosystems as influenced by extreme … URL EndNote PDF Read more... 

36156
Clayden S., Driscoll K.E. & Harries H. (2024): The lichen genus Rinodina (Physciaceae) in New Brunswick, Canada - The Canadian Field-Naturalist, 137[2013]: 32–63

Fifteen species of the crustose lichen genus Rinodina are confirmed in New Brunswick, Canada. We report four corticolous species, Rinodina pachysperma, Rinodina populicola, Rinodina septentrionalis, and Rinodina tenuis, and the saxicolous Rinodina tephraspis in the province for the first time. A previous report of Rinodina granuligera is based on a specimen that we have re-identified as Rinodina cinereovirens. We note distinguishing characteristics, habitats, substrata, relative abundance, and biogeographic … URL EndNote PDF Read more... 

36216
Zhang Y., Yin Y., Wang L., Printzen C., Wang L. & Wang X. (2024): Two new species of Rhizoplaca (Lecanoraceae) from Southwest China - MycoKeys, 101: 233–248

In this study, two new species, Rhizoplaca adpressa Y. Y. Zhang & Li S. Wang and R. auriculata Y. Y. Zhang, Li S. Wang & Printzen, are described from Southwest China, based on their morphology, phylogeny and chemistry. In phylogeny, the two new species are monophyletic, and sister to each other within Rhizoplaca chrysoleuca-complex. Rhizoplaca adpressa is characterized by its placodioid and closely adnate thallus, pale green and heavily pruinose upper surface, narrow (ca. 1 mm) and white free margin … URL EndNote PDF Read more... 

36119
Kholod S., Konoreva L. & Chesnokov S. (2024): Influence of orographic factors on the distribution of lichens in the Franz Josef Land archipelago - Plants, 13(2): 193 [23 p.]

During a geobotanical study of the Franz Josef Land archipelago, 111 lichen species were recorded on 130 sample plots. The significance of orographic factors in the distribution of lichens was assessed using principal component analysis (PCA) and multiple regression analysis. It was found that the absolute altitude and distance from the glacier are of the greatest importance for crustose lichens, while for fruticose lichens, the most critical factors were the slope exposure and steepness. Along the … URL EndNote Read more... 

36274
Raniga D., Amarasingam N., Sandino J., Doshi A., Barthelemy J., Randall K., Robinson S.A., Gonzalez F. & Bollard B. (2024): Monitoring of Antarctica’s fragile vegetation using drone-based remote sensing, multispectral imagery and AI - Sensors, 24(4): 1063 [30 p.]

Vegetation in East Antarctica, such as moss and lichen, vulnerable to the effects of climate change and ozone depletion, requires robust non-invasive methods to monitor its health condition. Despite the increasing use of unmanned aerial vehicles (UAVs) to acquire high-resolution data for vegetation analysis in Antarctic regions through artificial intelligence (AI) techniques, the use of multispectral imagery and deep learning (DL) is quite limited. This study addresses this gap with two pivotal contributions: … URL EndNote PDF Read more... 

36259
He Z., Naganuma T. & Melville H.I.A.S. (2024): Bacteriomic profiles of rock-dwelling lichens from the Venezuelan Guiana Shield and the South African Highveld Plateau - Microorganisms, 12(2): 290 [18 p.]

Lichens are not only fungal–algal symbiotic associations but also matrices for association with bacteria, and the bacterial diversity linked to lichens has been receiving more attention in studies. This study compares the diversity and possible metabolism of lichen-associated bacteria from saxicolous foliose and fruticose taxa Alectoria, Canoparmelia, Crocodia, Menegazzia, Usnea, and Xanthoparmelia from the Venezuelan Guiana Shield and the South African Highveld Plateau. We used DNA extractions … URL EndNote PDF Read more... 

36261
Kammann S., Leinweber P., Glaser K., Schiefelbein U., Dolnik C., Mikhailyuk T., Demchenko E., Heilmann E. & Karsten U. (2024): Successional development of the phototrophic community in biological soil crusts, along with soil formation on Holocene deposits at the Baltic Sea coast - Frontiers in Ecology and Evolution, 11: 1266209 [23 p.]

Harsh environmental conditions form habitats colonized by specialized primary microbial colonizers, e.g., biological soil crusts (biocrusts). These cryptogamic communities are well studied in drylands but much less in temperate coastal dunes, where they play a crucial role in ecological functions. Following two dune chronosequences, this study highlights the successional development of the biocrust’s community composition on the Baltic Sea coast. A vegetation survey, followed by morphological species … URL EndNote PDF Read more... 

36072
Islary P., Meher R.K., Biswas S., Basumatary D., Basumatary I.B., Dubey D., Basumatary D. & Daimari R. (2024): Evaluation of anticancer, immunomodulatory and anti-inflammatory potential of antioxidant rich Anzia ornatoides, a lichen species from eastern Himalayan region - South African Journal of Botany, 164: 266–279

The lichen Anzia ornatoides was identified by its morpho-anatomical and chemical features. The hexane, diethyl ether, ethyl acetate, methanol, and water extracts of the lichen were assessed for their antioxidant capacities. The presence of various phyto-compounds of the methanol extract were run through a GC–MS and identified three major compounds viz. methyloxyolivetol, imidazole 2-t‑butyl‑1,4-dimethyl-5-phenyl and benzoic acid 2,4-dihydroxy-3,6-dimethyl-methyl ester. The crude extraction … URL EndNote PDF Read more... 

36285
Solhaug K.A., Eiterjord G., Løken M.H. & Gauslaa Y. (2024): Non-photochemical quenching may contribute to the dominance of the pale mat-forming lichen Cladonia stellaris over the sympatric melanic Cetraria islandica - Oecologia, 204: 187–198

The mat-forming fruticose lichens Cladonia stellaris and Cetraria islandica frequently co-occur on soils in sun-exposed boreal, subarctic, and alpine ecosystems. While the dominant reindeer lichen Cladonia lacks a cortex but produces the light-reflecting pale pigment usnic acid on its surface, the common but patchier Cetraria has a firm cortex sealed by the light-absorbing pigment melanin. By measuring reflectance spectra, high-light tolerance, photosynthetic responses, and chlorophyll fluorescence … URL EndNote PDF Read more... 

36181
Berry T.-A., Wallis S., Doyle E., de Lange P., Steinhorn G., Vigliaturo R., Belluso E. & Blanchon D. (2024): A preliminary investigation into the degradation of asbestos fibres in soils, rocks and building materials associated with naturally occurring biofilms - Minerals, 14(1): 106 [15 p.]

Bioremediation utilizes living organisms such as plants, microbes and their enzymatic products to reduce toxicity in xenobiotic compounds. Microbial-mediated bioremediation is cost effective and sustainable and in situ application is easily implemented. Either naturally occurring metabolic activity can be utilized during bioremediation for the degradation, transformation or accumulation of substances, or microbial augmentation with non-native species can be exploited. Despite the perceived low potential … URL EndNote PDF Read more... 

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