12 research outputs found
Orthotrichum camanchacanum, a remarkable new moss species from Chile (Bryopsida, Orthotrichaceae)
No full textOrthotrichum camanchacanum is presented as a newly described species from Chile. The species is primarily distinguished by its emergent capsule with cryptoporous stomata, a double peristome, linear-lanceolate stem leaves with a long hyaline aristae in apex, conspicuously differentiated perichaetial leaves, and a densely hairy vaginula. The species was discovered in the mountain massif of the Andes in the Coquimbo region, notable for its unique climatic conditions. Molecular data and a brief discussion comparing the newly described species with the most closely related taxa are also provided
Welcome to the Czech Republic again! Rare northern mosses Calliergon megalophyllum and Drepanocladus sordidus (Amblystegiaceae) in South Bohemia in light of their European distribution and habitat preferences
No full textTwo aquatic moss species, Calliergon megalophyllum and Drepanocladus sordidus (Amblystegiaceae, Bryophyta), which had been considered extinct in the Czech Republic, were found in the TĆeboĆ Basin, South Bohemia, in 2016â2017. They co-occurred in extensive reed- and sedge-dominated fen pools with humic water on the shore of an old fishpond and the former species was also discovered in a small humic pool in an old shallow sand-pit. The new Czech sites of these rare boreal species represent one of the southernmost known outposts within their entire European range. Previously, the two species were only known from single records in the Czech Republic from the late 19th and early 20th centuries. To confirm our morphological observations, we used phylogenetic analyses of DNA sequence variation in four chloroplast loci (atpB-rbcL, trnL-trnF, rpl16, trnG) and one nuclear region, the internal transcribed spacers of ribosomal DNA (ITS). We found (1) monophyly of all Calliergon megalophyllum specimens tested; (2) based on chloroplast DNA sequences, monophyly among all Drepanocladus sordidus specimens and representatives of Pseudocalliergon turgescens and P. lycopodioides moss species; (3) based on nuclear ITS sequences, monophyly of all original D. sordidus specimens. These results corroborate morphological studies and thus confirm the existence of natural sites for the studied moss species in the TĆeboĆ Basin, South Bohemia, Czech Republic
Environmental Modelling of Forest Vegetation Zones as A Support Tool for Sustainable Management of Central European Spruce Forests
No full textThe impact of climate change on forest ecosystems may manifest itself by a shift in forest vegetation zones in the landscape northward and into higher elevations. Studies of climate change-induced vegetation zone shifts in forest ecosystems have been relatively rare in the context of European temperate zone (apart from Alpine regions). The presented paper outlines the results of a biogeographic model of climatic conditions in forest vegetation zones applied in the Central European landscape. The objective of the study is a prediction of future silvicultural conditions for the Norway spruce (Picea abies L. Karst.), which is one of the principal tree species within European forests. The model is based on a general environmental dependence of forest vegetation zones on the long-term effect of altitudinal and exposure climates defined by the mean and extreme air temperatures and the amount and distribution of atmospheric precipitation. The climatological data for the model were provided by a validated regional climate database for 2010 â 2090 according to the SRES A1B scenario, bound to specific geo-referenced points in the landscape. The geobiocoenological data in the model were provided by the Biogeography Register database which contains ecological data on the landscape bound to individual cadastres of the entire Czech Republic. The biogeographic model applies special programs (the FORTRAN programming language) in the environment of geographic information systems. The model outputs can be clearly graphically visualized as scenarios of predicted future climatic conditions of landscape vegetation zones. Modelling of the regional scenario of changes in the climatic conditions of forest vegetation zones reveals that in the prediction period of 2070 and beyond, good and very good climatic conditions for the cultivation of forests with dominant Norway spruce will be found only in some parts of its todayâs native range in forest vegetation zones 5 â 8. Based on the results provided by the regional scenario, the authors of this paper recommend fundamental reassessment of the national strategy of sustainable forest management in the Czech Republic, stipulating that the current practice of spruce cultivation be reduced only to areas specifically defined by the biogeographic model. The paper shows that biogeographic models based on the concept of vegetation zoning can be applied not only in regional scenarios of climate change in the landscape but also as support tools for the creation of strategies of sustainable forest management
New national and regional bryophyte records, 42
No full textnone46New record of Plagiothecium denticulatum var. obtusifolium from the Parco dellâAveto (Liguria, Province of Genova).Ellis, L. T.; Aleffi, M.; Bakalin, V. A.; Bednarek-Ochyra, H.; Bergamini, A.; Beveridge, P.; Choi, S. S.; Fedosov, V. E.; Gabriel, R.; Gallego, M. T.; GrdoviÄ, S.; Gupta, R.; Nath, V.; Asthana, A. K.; Jennings, L.; KĂŒrschner, H.; Lebouvier, M.; Nair, M. C.; Manjula, K. M.; Rajesh, K. P.; Nobis, M.; Nowak, A.; Park, S. J.; Sun, B-Y.; PlĂĄĆĄek, V.; ÄĂhal, L.; Poponessi, S.; Mariotti, M.; SabovljeviÄ, A.; SabovljeviÄ, M. S.; Sawicki, J.; Schnyder, N.; Schumacker, R.; Sim-Sim, M.; Singh, D. K.; Singh, D.; Majumdar, S.; Singh Deo, S.; ĆtefÄnuĆŁ, S.; Suleiman, M.; Seng, C. M.; Chua, M. S.; VĂĄĆa, J.; Venanzoni, R.; Bricchi, E.; Wigginton, M. J.Ellis, L. T.; Aleffi, M.; Bakalin, V. A.; Bednarek Ochyra, H.; Bergamini, A.; Beveridge, P.; Choi, S. S.; Fedosov, V. E.; Gabriel, R.; Gallego, M. T.; GrdoviÄ, S.; Gupta, R.; Nath, V.; Asthana, A. K.; Jennings, L.; KĂŒrschner, H.; Lebouvier, M.; Nair, M. C.; Manjula, K. M.; Rajesh, K. P.; Nobis, M.; Nowak, A.; Park, S. J.; Sun, B. Y.; PlĂĄĆĄek, V.; ÄĂhal, L.; Poponessi, S.; Mariotti, Mauro; SabovljeviÄ, A.; SabovljeviÄ, M. S.; Sawicki, J.; Schnyder, N.; Schumacker, R.; Sim Sim, M.; Singh, D. K.; Singh, D.; Majumdar, S.; Singh Deo, S.; ĆtefÄnuĆŁ, S.; Suleiman, M.; Seng, C. M.; Chua, M. S.; VĂĄĆa, J.; Venanzoni, R.; Bricchi, E.; Wigginton, M. J
