Cartographic monitoring of development of the Provalskaya steppe phytosystems

2015 ◽  
pp. 3-21
Author(s):  
V. S. Tkachenko

Materials of long-term (1977–2006) periodic studies of Donbass steppe associated with large-scale (1 : 5000) mapping of main index-plots of Provalskaya Steppe Nature reserve (Department of Lugansk Nature Reserve of the NAS of Ukraine), profiling, collections of standard relevés and processing of synphytoindication characteristics in statics and dynamics are represented. Significant diversity of steppes of Donetsk ridge in demutational and preservation changes is observed. There was an improvement of almost all quantity indicators in communities over a relatively short period of time (29 years). The structure of phytocoenoses has changed after the exogenous disturbances have stopped. That is regarded as autogenetic reconstruction of lost components of forest-steppe enclave reflecting homeostatic tendency to the formation of lignose quota of self-stabilizing landscape phytosystems.

2009 ◽  
pp. 27-53
Author(s):  
A. Yu. Kudryavtsev

Diversity of plant communities in the nature reserve “Privolzhskaya Forest-Steppe”, Ostrovtsovsky area, is analyzed on the basis of the large-scale vegetation mapping data from 2000. The plant community classi­fication based on the Russian ecologic-phytocoenotic approach is carried out. 12 plant formations and 21 associations are distinguished according to dominant species and a combination of ecologic-phytocoenotic groups of species. A list of vegetation classification units as well as the characteristics of theshrub and woody communities are given in this paper.


2018 ◽  
Vol 17 (7) ◽  
pp. 18-43
Author(s):  
L. N. Mylnikova ◽  
L. S. Kobeleva ◽  
M. S. Nesterova

Purpose. We show the main directions of work of the West Siberian archaeological detachment (team) of the Institute of Archaeology and Ethnography SB RAS, demonstrate the methods used and present the results and the possibilities of their interpretation. Results. In 2018, the West Siberian archaeological detachment celebrates the 45th anniversary of its formation. The long-term head of the team is academician V. I. Molodin. All studies are carried out within the framework of a multidisciplinary approach starting from the search for archaeological objects (sites Tartas-1, Vengerovo-2, -2A, -6, Staryi Tartas-5, Ust’-Tartas-1,-2; Chicha-1, Vengerovo-6 and others) to their laboratory investigation. We widely apply a range of analytical methods in all of our activities including almost all stages of research: from the search for archaeological sites to their processing in close cooperation with various scientists. We collaborate with specialists from the Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russia; the Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia; the Institute of Solid State Chemistry and Mechanochemistry SB RAS, Novosibirsk, Russia; the Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia; the Institute of Nuclear Physics SB RAS, Novosibirsk, Russia; Novosibirsk National Research State University, Novosibirsk, Russia; the Center of Collective Use (CCU) “Geochronology of Cenozoic”, Novosibirsk, Russia; Heidelberg University, Heidelberg, Germany; Ludwig-Maximilian Munich Institute, Munich, Germany; the Center of Archaeology of Kurt Engelhorn, Mannheim, Germany and others. Conсlusion. Studies of the West Siberian archaeological detachment, which were carried out over the recent two decades, have provided new data that develop existing points of view, clarify existing concepts or allow to build new concepts of historical and cultural processes. It is obvious that the modern paradigm of science requires participation of specialists in natural sciences at all stages of archaeological research.


1987 ◽  
Vol 124 ◽  
pp. 383-388
Author(s):  
David C. Koo ◽  
Richard G. Kron

This paper reports preliminary results of two long-term redshift surveys that are near completion. One consists of nearly 400 redshifts of field galaxies; the sample is faint enough (B ≲ 22) to test models of galaxy luminosity and color evolution (and possibly cosmology) and to search for the presence of very large-scale structures among distant field galaxies. The other consists of over 60 spectra of quasar candidates of similar faintness; the identifications and redshifts of bona-fide quasars provide strong constraints on the evolution and shape of the luminosity function of distant quasars. Almost all of the observations have been made with the 4m telescope at Kitt Peak National Observatory with the Cryogenic Camera in multiaperture mode. The spectral range covered 4500Å to 7500Å with 15Å FWHM resolution and 4Å per pixel; simultaneous exposures of an hour or two were made for about 10 objects within the 5 arcmin field of view.


Nutrients ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 883 ◽  
Author(s):  
Therese A. O’Sullivan ◽  
Joy Cooke ◽  
Chris McCafferty ◽  
Roslyn Giglia

The use of antenatal colostrum expression in the weeks prior to birth may help improve long-term breastfeeding, but few large-scale studies exist. Typically, antenatal colostrum expression instruction relies on face-to-face education, making large interventions costly. We aimed to determine whether an expert online instructional video can improve knowledge and confidence around antenatal colostrum expressing. Pregnant women were asked to complete a questionnaire pre- and post-watching the instructional video online. Ninety five pregnant women completed both pre- and post-questionnaires. Total antenatal colostrum expression knowledge scores improved after watching the video, from a mean of 3.05 ± 1.70 correct out of a maximum of 7, to 6.32 ± 0.76 (p < 0.001). Self-reported confidence around hand expressing in pregnancy also improved from an average ranking of not confident (2.56 ± 1.17, out of a possible 5) to confident (4.32 ± 0.80, p < 0.001). Almost all women (98%) reported that they would recommend the video to a friend or family member if antenatal colostrum expression was suggested by their healthcare provider. Findings suggest that the use of an online expert video is an acceptable and effective way to educate pregnant women in antenatal colostrum expression.


Author(s):  
Zhanna Matviishyna

Nowadays, cultural monuments deserve increasing attention. A comprehensive study of archeological complexes enables us to more accurately reproduce the conditions of formation and evolution of ancient society. In recent decades, archaeological sites have been investigated using archeology and paleogeography methods to reconstruct the character of landscape changes in the study area. Among such historical and archeological complexes is the famous city of Baturin, which holds a special place for deep and comprehensive study. Less than half a century later, having traveled from a small outpost on the northeastern border of the Commonwealth to the hetman's capital, Baturin died in the flames of the Northern War in the same short period of time. Tragedy of 1708 made Baturin not only a national shrine, but also a reference archaeological monument of the Cossack era, a cultural layer whose level of saturation and informativeness is unmatched. The inter-river basin of the Desna and the Seimas, which is geographically included in the Baturin Family, is one of the most important watersheds of the Dnieper North Left Bank, and the Seim River itself is a kind of natural border between the forest-steppe and forest zones. The territory where Baturin originated had a number of significant advantages. Baturin is located on the edge of the high terrace of the Diet. It is the only such elevated area of the left bank terrace of the Diet in its lower stream, which allowed to control virtually all of its basin. ancient times, which, combined with the wide floodplain of the Seimas with its opportunities for the development of livestock, fishing, hunting, created optimal conditions for economic activity of the population. During paleopedological research it was established that in the territory of the study in the catenary of soils with artifacts of the Bronze Age developed soils of meadow and forest-meadow genesis with well-formed humus horizons close to meadow-sod and alluvial-sod zones of temperate, but temperate climate. In the clearing of the shaft, the findings of the early Iron Age are confined to the surface of the humus horizon of the sod of slightly podzolic soils, formed in the conditions of meadow-steppe landscapes of temperate climate, less humid than the modern (background) soil. In the XVII-XVIII centuries. In the Polissya conditions, meadow-forest landscapes became widespread. In the soils on the high grass meadows there were conditions for the accumulation of organic matter, which made it possible to form well-defined humus horizons and the processes of sod genesis were quite pronounced. Turf-slightly podzolic ash-sandy sandy loamy and sandy soils of the XVII-XVIII centuries had well-defined humus horizons, and often were deeply humus, which provided for their agricultural use with ease of machining. The proximity of a fairly powerful river, as well as the spread of forests (as timber for business purposes), increased the possibility of comfortable living conditions in this area. In the XVIII-XX centuries. Opportunities for cultivation of soils with fertilizers have emerged and soils of clearing № 5,7,8 are characterized by high and deep (almost all over the profile) humus. They are an example of human influence on the cultivation of land and landscapes. In the floodplains, alluvial-marsh silt soils, enriched with the content of Fe and Mn hydroxides, often formed the basis for the development of iron-smelting production in the territories close to Baturin. In the low and high floodplains of the Diet, the formation of sediments was associated with alluvial processes (floods, alluvial sands) and aerial ones (sands, dunes). Among modern Baturin soils (background), typical sod-medium- and highly podzolic, as opposed to the predominance of slightly podzolic sod, aszed alluvial-meadow and alluvial-sod soils are identified. The terraces are characterized by the development of sod, sod-alluvial and sod-swamp soils (the latter on floodplains).


Koedoe ◽  
2005 ◽  
Vol 48 (1) ◽  
Author(s):  
G. Cleaver ◽  
L.R. Brown ◽  
G.J. Bredenkamp

Long-term conservation ecosystems require a broader understanding of the ecological processes involved. Because ecosystems react differently to different management practices, it is important that a description and classification of the vegetation of an area are completed. A vegetation survey of the valley areas of the Kammanassie Nature Reserve was undertaken as part of a larger research project to assess the environmental impacts of large-scale groundwater abstraction from Table Mountain Group aquifers on ecosystems in the reserve. From a TWFNSPAN classification, refined by Braun-Blanquet procedures, 21 plant communities, which can be grouped into 13 major groups, were identified. A classification and description of these communities, as well as a vegetation map of the different areas are presented. Associated gradients in habitat w ere identified by using an ordination algorithm (DECORANA). The diagnostic species as well as the prominent and less conspicuous species of the tree, shrub, forb and grass strata are outlined. The study also resulted in a total number of 481 species being identified and the discovery of a new Erica species. These vegetation surveys and descriptions provide baseline information for management purposes and that allows monitoring as well as similar surveys to be conducted in future.


2020 ◽  
Vol 47 (2) ◽  
pp. 131-139
Author(s):  
Márton Paulin ◽  
Anikó Hirka ◽  
Csaba Béla Eötvös ◽  
Csaba Gáspár ◽  
Ágnes Fürjes-Mikó ◽  
...  

AbstractThe North American oak lace bug (OLB, Corythucha arcuata) was first found in Europe in northern Italy in 2000, and up to 2019 it was recorded in 20 countries. Almost all Eurasian deciduous oak species are suitable hosts and the species can also feed on many other woody plants. At least 30 million hectares of oak forests provide suitable hosts for the OLB, meaning that the lack of suitable hosts will not restrict its further spread. Detailed studies on the long-term impact of the species are not yet available but there are many good reasons to assume that it poses multiple threats to oaks and oak ecosystems. In the long term, it may have negative effects on oak health, growth, and acorn crops. Many of other oak-associated species will likely also be negatively affected. So far, no effective and environmentally tolerable large scale control method is known for OLB.


2020 ◽  
Author(s):  
Nico Dewald ◽  
Chris D. Clark ◽  
Stephen J. Livingstone ◽  
Jeremy C. Ely ◽  
Anna L.C. Hughes

&lt;div&gt; &lt;div&gt; &lt;div&gt; &lt;p&gt;The configuration of subglacial drainage systems has a major impact on the dynamics of ice sheets. However, the logistical challenges of measuring subglacial processes beneath contemporary ice sheets hinder our understanding about the spatio-temporal evolution of subglacial drainage systems. Furthermore, today&amp;#8217;s observations on contemporary ice sheets are inherently limited to a short period within the process of deglaciation. Landforms generated by the flow of meltwater at the ice-bed interface offer the potential to study both large-scale (10&lt;sup&gt;3&lt;/sup&gt;-10&lt;sup&gt;6&lt;/sup&gt; km&lt;sup&gt;2&lt;/sup&gt;) and long-term (10&lt;sup&gt;3&lt;/sup&gt;-10&lt;sup&gt;5&lt;/sup&gt; a) developments of subglacial drainage networks beneath past ice sheets. Despite collectively recording subglacial drainage, individual meltwater landform types such as eskers, meltwater channels and tunnel valleys, and hummock corridors have mostly been considered as separate entities. Using high-resolution (1-2 m) DEMs, we summarise the suite of interconnected subglacial meltwater landforms into a common drainage signature herein called a subglacial drainage route. Our integrated map of subglacial meltwater landforms presents the large-scale distribution of major subglacial drainage routes across Scandinavia and provides a basis for future research about the long-term evolution of subglacial drainage networks and its effect on ice dynamics of the Scandinavian Ice Sheet.&lt;/p&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt;


2020 ◽  
Vol 9 (3) ◽  
pp. 100-106
Author(s):  
Lyubov A. Novikova

The paper deals with the problem of restoring rare communities of meadow steppes after plowing using the example of the Volga forest-steppe state nature reserve. The author has studied 9 uneven-age deposits in three forest-steppe protected areas: Kuncherovsky 5, Poperechensky 2 and Ostrovtsovsky 2. The study of deposits of different ages was carried out by the method of periodic large-scale geobotanical mapping using modern GIS-technologies. Maps of vegetation of different scale (1:5000, 1:10000, 1:25000) have been created. Deposits areas that adjoined to the virgin steppe were studied by a method of geobotanical profiling. At the same time, profiles (out of 1025 sample plots of 4 m in size) were laid at a distance of 10 m from each other. About 500 geobotanical descriptions were made at 9 different-age deposits at different times. Restoration of meadow steppes is impossible without the introduction of elements of anthropogenic intervention (moderate grazing and regulated haying) into the existing protection regime. Restoration of the steppes in an absolutely protected mode is possible only on the slopes of the southern exposure in forest-steppe landscapes of erosion-denudation plains (Kuncherovskaya forest-steppe).


Author(s):  
J. Dulčić ◽  
G. Beg Paklar ◽  
B. Grbec ◽  
M. Morović ◽  
F. Matić ◽  
...  

Presence and habitat preference of two pelagic fish species—Mola mola and Ranzania laevis—are investigated from all available records obtained in the Adriatic from 1781 up to today. Absence of systematic investigations is overcome by relating their occurrences to the long-term meteorological and oceanographic data sets representing local conditions and processes. Seasonal and interannual distributions of these two species are significantly different and point to a possible different causes of their appearance. On the seasonal scale almost all findings of M. mola, with only a few exceptions, are from the warm part of the year, whereas R. laevis is appearing throughout the year with the highest number of individuals in December. Analysis of the interannual meteorological and oceanographic conditions indicates that occurrence of M. mola coincides with the sea warming, whereas the oceanographic conditions favourable for appearance of R. laevis are more complex and could be related to the abrupt change in the large scale atmospheric conditions. Changeable atmospheric conditions coincided with increased productivity in the Adriatic and increased number of zooplankton and small pelagic fish, which are the main food for R. laevis.


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