Mosses of the Mus-Khaya Mountain (Yakutia, Asiatic Russia)

Abstract

РезюмеMoss flora of the area around the second highest peak of Yakutia, the MusKhaya Mt., is studied. This area is close to the coldest place of the Northern Hemisphere. Severe condition and high content of heavy metals result is a rather poor diversity of 180 species; their list is annotated by altitudinal range, frequency, locality and habitat information. Map of Gollania turgens is provided; Mielichhoferia mielichhoferiana, M. elongata and Andreaea papillosa are discussed and illustrated. РезюмеИсследована флора мхов в районе горы Мус-Хая, второй высочайшей вершины Якутии. Этот район находится в непосредственной близости к полюсу холода Северного полушария. Суровые условия и высокое содержание тяжелых металлов обуславливают относительную бедность флоры мхов, включающей 180 видов. Аннотированный список содержит информацию о высотном диапазоне, частоте встречеаемости видов, точкам сбора и местообитаниям. Приводится карта распространения Gollania turgens, обсуждение и иллюстрации Mielichhoferia mielichhoferiana, M. elongata и Andreaea papillosa.

Liverworts of the Mus-Khaya Mountain (Yakutia, Asiatic Russia)

“…During anticyclone type of weather in winter temperature on the convex relief areas is always higher than in adjacent valleys. Thus average January temperature and absolute minimal temperature in high moun- (Izyumenko, 1966(Izyumenko, , 1968Troeva et al, 2010;Ignatova et al, 2011). In study area the forests are formed of larch only (Larix cajanderi Mayr) with Vaccinium vitis-idaea L., Vaccinium uliginosum L., Ledum palustre L. subsp.…”

“…Despite moss cover is very weak and consists of spots of Polytrichum hyperboreum R. Br., P. piliferum, Racomitrium lanuginosum et al (Ignatova et al, 2011;Sofronov et al, 2013) the role of liverworts in this community is significant. Gymnomitrion corallioides and Marsupella emarginata form large continuous cover on bare soils and on rocks covered by soil respectively.…”

“…have been bryologically investigated in July 12-17, 2011, in the upper reaches of the Knory River (the Agayakan River Basin) in the area of mountain pass to the Yudoma River (62°31'-36'N, 140°56'-141°07'E). The study area was described and illustrated by Ignatova et al (2011). Additional physiographic facts that may cause liverwort diversity and an annotated list of liverworts of the area are listed below.…”

“…From floristic point of view the study area is interesting in combination of modern mountain glaciation, very hot and light summer, when day longevity exceeds 20 hours. The hydrographic system is dense; the rivers are fed with snow, rain and glacier waters (Baranova & Biske, 1964;Yurtsev, 1964;Mozolevskaya, 1973;Korzhuev, 1974;Nekrasov, 1984;Leshkevich, 2008;Troeva et al, 2010;Ignatova et al, 2011;Sofronov et al, 2013).…”

“…At 1900-2100 m alt. slopes are very steep and covered with moving stone fields (Yurtsev, 1964;Timofeev, 2003;Troeva et al, 2010;Ignatova et al, 2011;Isaev, 2011;Sofronov et al, 2013).…”