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Chemical and biological features of the saline Lake Krasnovishnevoye(Baraba,Russia)in comparison with Lake Malinovoe(Kulunda,Russia):a reconnaissance study

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Journal of Oceanology and Limnology 2018年第6期36卷 1993-2001页

作者： Anastasia KOMOVA Anna MELNIKOVA Zorigto NAMSARAEV Roman ROMANOV Vera STRAKHOVENKO Ekaterina OVDINA Nadezhda ERMOLAEVA National Research Centre“Kurchatov Institute” Moscow 123182Russia central siberian botanical garden of the siberian Branch of the Russian Academy of Sciences Novosibirsk 630090Russia V.S.Sobolev Institute of Geology and Mineralogy of the Russian Academy of Sciences Novosibirsk 630090Russia Institute for Water and Environmental Problems Siberian Branch of the Russian Academy of SciencesBarnaul 656038Russia

The Baraba and Kulunda steppes are located in southwestern Siberia in an area with an arid continental climate. This paper presents results of the first study of the hypersaline Lake Krasnovishnevoye(Baraba steppe, TDS(total dissolved solids)=297 g/L, pH 7.88). The major chemical, mineralogical and biological features of the lake were studied and compared to those of Lake Malinovoe, a typical saline neutral lake of Kulunda steppe(TDS=396 g/L, pH 7.63). The phytoplankton composition and the culturable diversity of anoxygenic phototrophic bacteria from Lake Krasnovishnevoye correspond to the ones in the Kulunda lakes. Nevertheless, the peculiarities of water composition and regime of Lake Krasnovishnevoye reduce the biodiversity to prokaryotes and unicellular algae.

关键词： saline and soda lakes hydrochemistry hydrobiology phytoplankton zooplankton anoxygenic phototrophic bacteria

Morpho-Histological Analysis of Direct Shoot Organogenesis Induced in Flower Buds Cultures of <i>Allium altissimum</i>

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American Journal of Plant Sciences 2014年第13期5卷 2015-2022页

作者： Tatyana V. Poluboyarova Tatyana I. Novikova Galina Yu. Vinogradova Elena V. Andronova Biotechnology Laboratory Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences Novosibirsk Russia Department of Embryology and Reproductive Biology Komarov Botanical Institute of the Russian Academy of Sciences St Petersburg Russia

The present work gives a detailed study of in vitro shoot organogenesis of the ornamental onion A. altissimum Regel from the buds of the middle layer of the inflorescences. The course of morphogenesis was examined by light and scanning electron microscopy. Histological observation revealed that during 3 - 5 days of culture on the BDS medium supplemented with 2.0 mg·L-1 of BA and 2.0 mg·L-1 of NAA the epidermal cells of the stamen filament in the area of its fusion with the tepal became competent and dedifferentiated. Originally the organogenesis involved several initial epidermal cells. The formation of meristematic centers was observed from day 3 to day 14. The apical shoot meristems and leaf primordia in a roller shape formed from day 14 to day 28 of culture on the same media. The further development of vegetative shoots and formation of the bulblets were observed when the explants were stimulated by triapenthenol (2.0 mg·L-1).

关键词： Allium altissimum Direct Shoot Organogenesis Regeneration Tissue Culture

The forecast of fire impact on Pinus sylvestris renewal in southwestern Siberia

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Journal of Forestry Research 2021年第5期32卷 1911-1919页

作者： Stanislav NSannikov Nelly SSannikova Irina VPetrova Olga E.Cherepanova botanical garden of the Ural Branch of Russian Academy of Science 202a8 Marta St.Yekaterinburg 620144Russia

Simulation of fire impact on forest floor renewal in pine forests was based on predictions for 2100 by the Canadian Climate Centre for increase in temperatures of by4.5℃and total precipitation by 14%in the West siberian pre-forest-steppes and empirical regression relationships between them and the degree of burnt forest floor,as well as amount of Pinus sylvestris *** was predicted that by 2100,pine regeneration on fire prone sites under the canopy of the dominant forest type will increase by 29-54%compared to the 1980 s but on adjacent open sites,regeneration will decrease twice as *** means that the regeneration potential and pine population stability in pre-forest-steppes will become as poor as it is today.

关键词： Fire Forecast Stability Population Mathematical model Seeds Imitation model Undergrowth

树木管胞大小对于西伯利亚南部林草交错带森林生长及环境适应性的指示意义

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北京大学学报（自然科学版） 2020年第3期56卷 531-538页

作者：薛佳鑫刘鸿雁许重阳 Oleg A.Anenkhonov Denis V.Sandanov Andrey Yu.Korolyuk 蒋子涵柳絮 Larisa D.Balsanova Bulat B.Naidanov 地表过程分析与模拟教育部重点实验室北京大学城市与环境学院北京100871 Institute of General and Experimental Biology Siberian BranchRussian Academy of SciencesUlan-Ude 670047 central siberian botanical garden Siberian BranchRussian Academy of SciencesNovosibirsk 630090

为了研究木质部细胞、树木个体和森林群落3个尺度之间的关联,在西伯利亚南部以西伯利亚落叶松(Larix sibirica)和欧洲赤松(Pinus sylvestris)为主的3个采样点37个样地,测量725根树芯的树木年轮宽度,采用系统随机的方法选择其中195个树... 详细信息

为了研究木质部细胞、树木个体和森林群落3个尺度之间的关联,在西伯利亚南部以西伯利亚落叶松(Larix sibirica)和欧洲赤松(Pinus sylvestris)为主的3个采样点37个样地,测量725根树芯的树木年轮宽度,采用系统随机的方法选择其中195个树芯进行管胞大小的测量和计算。结果表明,尽管局地环境和树种组成有所不同,但在树木个体和森林群落两个水平上,管胞大小与树木径向生长的年际变化显著相关。较小的平均管胞尺寸指示更低的年际生长量和更高的年际生长波动。平均管胞大小对半干旱区针叶林生境湿度和森林生长适应性具有指示作用,揭示树木通过调节管胞的大小在生长适应与生长安全性二者间的权衡机制。

关键词：森林草原交错带生长波动管胞气候因子适应性

Tibet,the Himalaya,Asian monsoons and biodiversity-In what ways are they related？

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Plant Diversity 2017年第5期39卷 233-244页

作者： Robert A. Spicer Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences Menglun Yunnan 666303 PR China School of Environment Earth and Ecosystem Sciences The Open University MK7 6AA UK

Prevailing dogma asserts that the uplift of Tibet, the onset of the Asian monsoon system and high biodiversity in southern Asia are linked, and that all occurred after 23 million years ago in the ***, spanning the last 60 million years of Earth history, the geological, climatological and palaeontological evidence for this linkage is reviewed. The principal conclusions are that: 1) A proto-Tibetan highland existed well before the Neogene and that an Andean type topography with surface elevations of at least 4.5 km existed at the start of the Eocene, before final closure of the Tethys Ocean that separated India from Eurasia. 2) The Himalaya were formed not at the start of the India-Eurasia collision, but after much of Tibet had achieved its present elevation. The Himalaya built against a pre-existing proto-Tibetan highland and only projected above the average height of the plateau after approximately 15 Ma. 3)Monsoon climates have existed across southern Asia for the whole of the Cenozoic, and probably for a lot longer, but that they were of the kind generated by seasonal migrations of the Inter-tropical Convergence Zone. 4) The projection of the High Himalaya above the Tibetan Plateau at about 15 Ma coincides with the development of the modern South Asia Monsoon. 5) The East Asia monsoon became established in its present form about the same time as a consequence of topographic changes in northern Tibet and elsewhere in Asia, the loss of moisture sources in the Asian interior and the development of a strong winter siberian high as global temperatures declined. 6) New radiometric dates of palaeontological finds point to southern Asia's high biodiversity originating in the Paleogene, not the Neogene.

关键词： Tibetan Plateau Himalaya Uplift history Monsoons Biodiversity Molecular phylogeny

Examples of Ecotones and Paragenese in the Vegetation Cover of the Baikalian Siberia

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Natural Science 2014年第15期6卷 1197-1209页

作者： Alexander P. Sizykh Svetlana V. Sizykh siberian Institute of Plant Physiology and Biochemistry Siberian Branch of Russian Academy of Sciences Irkutsk Russia Botanic garden Irkutsk State University Irkutsk Russia

Changes in vegetation structure in environments contact community characterize the ecotones and paragenese inside zonal vegetation site or altitude belt as of concrete environments while differences of cenotic structures of communities between zones or between altitude belts as well. The aim of this work was research of structural-dynamic organization of phytocenoses forming under the conditions of environments contact and mountain tundra, forests (zonal taiga) and extrazonal steppes, zonal forest steppes of some areas at the Baikalian Siberia, Eastern Siberia of Russia.

关键词： Baikalian Siberia Zonal and Extrazonal Vegetation Communities Altitude Belts Ecotones Paragenese

The structure of the plant communities in the different environment contact sites on the base of the soil-geobotanic profiling in the changing climate of Lake Baikal region

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Natural Science 2012年第10期4卷 771-777页

作者： Alexander Sizykh Victor Voronin Alexander Griczenuk Svetlana Sizykh Botanic garden Irkutsk State University Irkutsk Russia Forestry Agency of Buriayt Republic Russia siberian Institute of Plant Physiology and Geochemistry Siberian Branch of Russian Academy of Sciences Irkutsk Russia

The results of studies of the peculiarities of formation of phytocenoses in environments contact sites of the western and eastern coasts of the Lake Baikal has been showed in this paper. On the base of geobotanic profiling combined with soil one, the structure and dynamics of phytocenoses forming under the conditions of mutual development of light-coniferous taiga forest and of extra zonal steppes. Edaphic conditions and placement of phytocenoses are main trigger factors determining the ways of plant cover development in this part of Lake Baikal basin. We discuss the characteristics properties inherent in the linkage of the dynamics and spatial variability of the vegetation with the change of climate in the Baikal region. The regional conditions of the physiogeographic environment had given rise to structurally highly contrasting plant communities in this region. The increase in yearly mean summertime amounts of rainfall, combined with the rise of yearly mean winter temperatures over the last years were conducive to changes in the spatial structure of vegetation. The boundary between the types of vegetation undergoes smoothing. The upper boundary of forest is altered because of changes of the environment that are responsible for the zonality and properties of vertical zonality of the vegetation on the mountains surrounding Lake Baikal. Changes in the vegetation serve as indicators of climate change as well as providing diagnostic tools for the genesis of the Baikal region’s natural environment.

关键词： Phytocenoses Environments Contact Sites Soil-Geobotanic Profiling Spatial Variability of Plant Communities Taiga-Steppe Communities Lake Baikal Region

Paragenese of the vegetation in ecosystems contact zones (in Lake Baikal basin)

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Natural Science 2012年第5期4卷 271-275页

作者： Alexander Sizykh Victor Voronin Michail Azovsky Svetlana Sizykh Botanic garden Irkutsk State University Irkutsk Russia Institute of Geochemistry Siberian Branch of Russian Academy of Sciences Irkutsk Russia siberian Institute of Plant Physiology and Biochemistry Siberian Branch of Russian Academy of Sciences Irkutsk Russia

Phytocenoses in the ecosystems contact zones are characterized by a rather complex structural and dynamical more than one features and by specific development characters under definite physical and geographical conditions. Unlike zonal vegetation, such phytocenoses respond to all environment changes more rapidly. The structure of such phytocenoses allows to determine the way this or that scenarios of climate change would develop at any level of more than one ecosystems. A possibility to use the notion “paragenese” for characterization of phytocenoses under contrast conditions is considered. Paragenese is the development of phytocenoses which are not related to zonal vegetation types by their composition and structure. Probably, the communities from ecosystems contact zones are to be related to a particular “type” of vegetation. Phytocenoses in the contact of light coniferous taiga and extrazonal steppes, as well as relations between zonal forest-steppe at main areas of Lake Baikal basin served as examples for justification of use of the notion “paragenese” to characterize the development of such communities.

关键词： Paragenese Phytocenoses Lake Baikal Basin Ecosystems