scholarly journals The analysis of pine cenoses flora in Krasnoyarsk forest-steppe

Author(s):  
I. A. Goncharova ◽  
L. N. Skripalshikova ◽  
A. P. Barchenkov

The aim of the paper is the floristic analysis at the Krasnoyarsk forest-steppe pine cenoses. This problemrequires detailed research under the constant anthropogenic pressure. A flora inventory was carried out, vascular plantsspecies composition was determined. As a result, a summary of the flora was compiled, which includes 126 species from107 genera, 46 families, 6 classes, 5 divisions. Floristic analysis was carried out by the method of specific flora, taking intoaccount herbarium materials. The taxonomic, chorological, zonal, ecological, biomorphological flora structure featureswere determined based on the analysis of floristic data. The protected taxes have been identified. The peculiarities ofvegetation cover species composition are marked on the basis of the comprehensive flora analysis. The authors madethe conclusion that mesophytes of the light-coniferous and forest-steppe belt-zone groups with the Eurasian and EuroSiberian ranges predominate in the pine cenoses flora at the Krasnoyarsk forest-steppe. The most part of species havethe life forms hemicryptophytes and cryptophytes. Species to be protected have been discovered: Cypripedium calceolus,C. guttatum, C. macranthon, Neottianthe cucullata.

2018 ◽  
Vol 8 (2) ◽  
pp. 348-353
Author(s):  
E. A. Kuchina ◽  
N. D. Ovcharenko ◽  
L. D. Vasileva

<p>Anthropogenic impact on the population of ground beetles leads to a change in their numbers, structure of dominance, density, species composition, spectrum of life forms. This makes the beetles Carabidae a convenient and informative bioindicator of the ecological state of biocenoses. The material for this work was the Carabidae collections conducted in June-August 2016-2017 in the park zone of different regions of Barnaul, differing in location, area, hydrological regime, vegetation cover, purpose and anthropogenic load. When processing the material, the quantitative, species and generic composition of the carabidae was determined, calculations were made for such indicators as the Berger-Parker dominance index, the Shannon species diversity index (Hs), and the Jacquard species similarity index. The fauna (Coleoptera, Carabidae) of the park zone of Barnaul is represented by 55 species belonging to 20 genera. The dominant group is represented by species belonging to steppe, forest and polyzonal groups. Forest-steppe species of ground beetles as dominants have not been identified in any of the investigated territories. The greatest variety of ecological groups was noted on the territory of the Yubileyny рark, which is explained by the presence of zones with various microclimatic conditions, the presence of a birch grove that flows through the park with the Pivovarka River, and a wide log in the park. Registered species belong to eight groups of life forms belonging to two classes - zoophagous and myxophytophagous. On the numerical and species abundance, zoophages predominate. The spectrum of life forms corresponds to the zonal spectrum characteristic of the forest-steppe zone.</p><p> </p>


2003 ◽  
pp. 51-61
Author(s):  
N. I. Makunina ◽  
T. V. Maltseva

The forest belt of the KuznetskyAlatau eastern macro­slope consists of two subunits, namely the boreal-montane and the hemiboreal (sub)belts. In the upper one, the tall-herb communities of the class Mulgedio-Aconitetea are formed in place of the climax fir (Abiessibirica) forest. If being subject to regular mowing or grazing, these tall-herb communities are replaced by the «true» meadows of the ass. Trifoliopratensis—Alchemilletum vulgaris, order Arrhenatheretalia, whereas forest meadows of the ass. Trollioasiaticae—Poetumsibiricae replace the mixed forest composed of Pinussibirica, Piceaobovata, Betula pendula and a few of Larixsibirica in the lower subbelt. With the anthropogenic pressure increase, the «true» meadows of the ass. Filipenduloulmariae—Alchemille­tum vulgaris and then of the ass. Potentilloanserinae–Alchemilletum vulgaris (Arrhenatheretalia) represent the next two digression stages, respectively. Forest meadows of the ass. Hesperidosibiricae—Poetumsibiricae, similar to those of the forest-steppe belt, are formed on dry sunny slopes in the bottom part of the hemiboreal belt.


Author(s):  
Nikolay N. Lashchinskiy ◽  
◽  
Olga Yu. Pisarenko ◽  

Spruce forests of the Tuva Republic are not sufficiently described in literature. Spruce forests occupy small areas, but they are characterized by high species diversity. Enclaves of forest communities outside the forest belt are particularly interesting. The actual problem concerns species composition which forms plant communities existing under environmental and climate conditions that are not favorable for it. The aim of the research is to describe the communities of the valley dark coniferous forests in the model river valley in Central Tuva, to assess their diversity, to analyze species composition and to identify the main factors determining it. In the course of the fieldwork in 2020, we examined coniferous forests along the Koptu river, on the southern slope of the Academic Obruchev range (See Figures). In this part of the range, the foothills are occupied by steppe vegetation; forest-steppe landscapes prevail at altitudes of 800-1000 m; above there is the taiga belt, the upper border of the forest is about 1900 m above sea level. Two key areas were investigated; one of them is located in the middle course of the river within the taiga belt (51.90- 51.92°N; 95.45-95.48°E, 1400-1500 m above sea level), the other is in the lower course of the river in the forest-steppe belt (51.55-51.70°N; 95.34-95.45°E, 700-900 m above sea level). In total, 11 relevés were made on plots of 20×20 m by the standard method. We established that the forests are rich in species: 98 taxa were registered (See Table). It could be expected that coniferous forests in the river valley within the forest-steppe belt are a continuation of the above located communities, a continuation of communities from the taiga belt. However, our materials have demonstrated that it is not so. We revealed that, despite the physiognomic similarity, the dark coniferous communities growing in the river valley in its lower course differ significantly from those growing within the taiga belt (See Table). Larix sibirica is abundant everywhere; but in the taiga belt Pinus sibirica dominates in the valley communities, and Picea obovata prevailes in the river valley in the forest-steppe belt. Apart from it, the communities of these two key sites differ significantly in their species composition. Analysis of the ecology of differentiating species shows that the difference is due to a complex of factors. Four groups of species can be distinguished in the investigated forests: I. Taiga species which are only encountered in forests of the upper part and are absent below (Aegopodium alpestre, Carex iljinii, Cerastium pauciflorum, Vaccinium vitis-idaea, V. uliginosum). II. Meadow species, symmetrically, only occur in the forests of the lower part and are absent in the taiga belt (Galium boreale, Lathyrus pratensis, Rubus saxatilis and Vicia cracca, Achillea asiatica, Adonis sibirica, Artemisia laciniata, Iris ruthenica). The two groups mentioned above reflect the difference in altitude as well as the influence of the zonal environment. III. A series of species in the downstream valley forests reflect a waterlogging process, which takes place there due to the altitudinal gradient declining and surface flattening (Angelica tenuifolia, Caltha palustris, Carex cespitosa, C. dioica, Equisetum scirpoides, Delphinium crassifolium, Galium uliginosum, Lathyrus palustris, Parnassia palustris, Ribes procumbens; among mosses – Calliergonella cuspidata, Helodium blandowii, Timmia megapolitana, Tomentypnum nitens). IV. A number of species with mainly taiga or Arctic-Alpine distribution were recorded only in larch-spruce forests in the river valley in the forest-steppe belt and they are absent in the forests of the upper key area (Carex alba, Bistorta vivipara, Carex sedakowii, Orthilia obtusata, Pedicularis sceptrum-carolinum, Saussurea alpina, Schizachne callosa). For these species, it is impossible to explain their presence in the forest-steppe belt by modern ecological conditions. Their presence in the valley spruce forests has historical reasons and could be caused by the conditions of the Late Pleistocene cooling. So, we can draw a conclusion that the massif of valley spruce forests in the lower part of the Koptu river is a relict community formed in the Late Pleistocene periglacial environment on permafrost soils. In present conditions, it is in unstable equilibrium. The massif is the habitat of a number of rare species. In particular, the Orchidaceae taxa were found here, four of which are included in the Red Book of the Republic of Tuva (Cypripedium calceolus, Dactylorhiza sibirica, Epipogium aphyllum, Neottianthe cucullata). The valley forest of the lower part of the Koptu river can be nominated as a high conservation value forest and recommended to be included in the list of the Important Plant Areas of the Altai-Sayan region. The massif is under the strong anthropogenic pressure; in order to avoid extinction, it needs to be protected.


2014 ◽  
Vol 25 (3-4) ◽  
pp. 53-68
Author(s):  
I. V. Goncharenko ◽  
H. M. Holyk

Cenotic diversity and leading ecological factors of its floristic differentiation were studied on an example of two areas – Kyiv parks "Nivki" and "Teremki". It is shown that in megalopolis the Galeobdoloni-Carpinetum impatientosum parviflorae subassociation is formed under anthropogenic pressure on the typical ecotope of near-Dnieper hornbeam oak forests on fresh gray-forest soils. The degree of anthropogenic transformation of cenofloras can be estimated by the number of species of Robinietea and Galio-Urticetea classes, as well as neophytes and cultivars. Phytoindication for hemeroby index may be also used in calculation. We propose the modified index of biotic dispersion (normalized by alpha-diversity) for the estimation of ecophytocenotic range (beta-diversity) of releves series. We found that alpha-diversity initially increases (due to the invasion of antropophytes) at low level of antropogenic pressure, then it decreases (due to the loss of aboriginal species) secondarily with increasing of human impact. Also we found that beta-diversity (differential diversity) decreases, increasing homogeneity of plant cover, under the influence of anthropogenic factor. Vegetation classification was completed by a new original method of cluster analysis, designated as DRSA («distance-ranked sorting assembling»). The classification quality is suggested to be validated on the "seriation" diagram, which is а distance matrix between objects with gradient filling. Dark diagonal blocks confirm clusters’ density (intracluster compactness), uncolored off-diagonal blocks are evidence in favor of clusters’ isolation (intercluster distinctness). In addition, distinction of clusters (syntaxa) in ordination area suggests their independence. For phytoindication we propose to include only species with more than 10% constancy. Furthermore, for the description of syntaxonomic amplitude we suggest to use 25%-75% interquartile scope instead of mean and standard deviation. It is shown that comparative analysis of syntaxa for each ecofactor is convenient to carry out by using violin (bulb) plots. A new approach to the phytoindication of syntaxa, designated as R-phytoindication, was proposed for our study. In this case, the ecofactor values, calculated for individual releves, are not taken into account, however, the composition of cenoflora with species constancies is used that helps us to minimize for phytoindication the influence of non-typical species. We suggested a syntaxon’s amplitude to be described by more robust statistics: for the optimum of amplitude (central tendency) – by a median (instead of arithmetic mean), and for the range of tolerance – by an interquartile scope (instead of standard deviation). We assesses amplitudes of syntaxa by phytoindication method for moisture (Hd), acidity (Rc), soil nitrogen content (Nt), wetting variability (vHd), light regime (Lc), salt regime (Sl). We revealed no significant differences on these ecofactors among ecotopes of our syntaxa, that proved the variant syntaxonomic rank for all syntaxa. We found that the core of species composition of our phytocenoses consists of plants with moderate requirements for moisture, soil nitrogen, light and salt regime. We prove that the leading factor of syntaxonomic differentiation is hidden anthropogenic, which is not subject to direct measurement. But we detect that hidden factor of "human pressure" was correlated with phytoindication parameters (variables) that can be measured "directly" by species composition of plant communities. The most correlated factors were ecofactors of soil nitrogen, wetting variability, light regime and hemeroby. The last one is the most indicative empirically for the assessment of "human impact". We establish that there is a concept of «hemeroby of phytocenosis» (tolerance to human impact), which can be calculated approximately as the mean or the median of hemeroby scores of individual species which are present in it.


Author(s):  
А.В. Терешкин ◽  
А.Л. Калмыкова ◽  
Т.А. Андрушко

Вертикальное озеленение с участием различных видов лиан в современных условиях имеет важное эстетическое и санитарно-гигиеническое значение. Особо актуально решение вопросов обогащения флоры городских территорий лианами в степных районах в связи с бедным видовым составом и резким ухудшением экологической ситуации. Объектами исследований являлись 7 видов лиан, различных жизненных форм (однолетние, многолетние), произрастающие в населенных пунктах Саратовской области (Аткарск, Саратов). Цель исследований – изучение эколого-биологических особенностей и мелиоративных свойств лиан и выявление перспектив их использования в вертикальном озеленении селитебных территорий Саратовской области. В ходе исследования видового состава, были выявлены наиболее популярные виды однолетних лиан: ипомея красно-голубая (Ipomea tricolor (L.) Roth) и ипомея пурпурная (Ipomea purpurea (L.) Roth), горошек душистый (Lathyrus edoratus L.), настурция (Tropacolum peregrinum L.) и фасоль огненно-красная (Phaseolus coccineus). Большинство (70%) из них произрастают в местах ограниченного пользования. Изученные виды лиан в исследуемых регионах достигают средних природных показателей (при наличии надлежащего ухода), обладают хорошими показателями жизненного состояния, обильно цветут и плодоносят. При воздействии токсикантами различной концентрации на листовые пластинки лиан установлено их степень устойчивости. Выявлено, что однолетние лианы лучше использовать в декоративных целях, а не в санитарно-гигиенических. Сравнительная оценка однолетних видов с многолетними лианами (девичий виноград пятилисточковый и клематис тангутский) показывает устойчивость многолетних видов (в среднем на 3 балла - 40%). Разработаны варианты декоративных композиций с участием травянистых лиан. По степени декоративности выделены однолетние лианы – Ipomea tricolor, I. purpurea (37 – 41 балл), средней степенью отличаются – Lathyrus edoratus (33 балла), Tropacolum peregrinum (30 баллов) и Phaseolus coccineus (20 – 27 баллов). Преимущество многолетних лиан заключается в их устойчивости к резким изменениям климатических условий (на 40 %) по сравнению с однолетними формами. Поэтому они более предпочтительны для озеленения городской среды. Для усиления декоративного эффекта в сезонном аспекте рекомендуются сочетать расширение видового и формового разнообразия растений (многолетние и однолетние лианы, древесно-кустарниковая, цветочная растительность). Установлено, что природно-климатические условия зоны степи и лесостепи в пределах Саратовской области являются достаточно благоприятными для нормального роста и развития древесно-кустарниковой растительности, в том числе травянистых лиан. Таким образом, обоснованное применение древесных лиан в комплексе с традиционными видами насаждений позволит создать комфортные условия проживания населения, регулировать оптимальный температурный баланс и создавать благоприятные микроклиматические условия. Vertical gardening with different types of vines in modern conditions is important aesthetic and sanitary-hygienic value. It is especially important to address the issues of enrichment of the flora of urban areas with vines in the steppe regions due to poor species composition and a sharp deterioration of the ecological situation. The objects of research were 7 species of lianas, various life forms (annual, perennial), growing in the settlements of the Saratov region (Atkarsk, Saratov). The aim of the research is to study the ecological and biological features and reclamation properties of vines and identify the prospects for their use in vertical gardening residential areas of the Saratov region. In the study, species composition was the most popular species of annual vines: morning glory red-blue (Ipomea tricolor (L.) Roth) and purple morning glory (Ipomea purpurea (L.) Roth), the fragrant pea (Lathyrus edoratus L.), nasturtium (Tropacolum peregrinum L.) and runner beans (Phaseolus coccineus). Most (70%) of them grow in restricted areas. Studied species of vines in the study regions reach average natural performance (with proper care), have good indicators of vital condition, bloom abundantly and bear fruit. When exposed to toxicants of different concentrations on the leaf blades of vines established their degree of stability. It was revealed that the annual vines are better used for decorative purposes, and not in the sanitary-hygienic. A comparative assessment of annual species with perennial vines (maiden grapes and clematis Tangut) shows the stability of perennial species (an average of 3 points-40%). The options and decorative compositions with the participation of herbaceous vines. According to the degree of decoration of the allocated annual vine – Ipomea tricolor, I. purpurea (37 – 41 points), the average degree of differ – Lathyrus edoratus (33 points), Tropacolum peregrinum (30 points) and Phaseolus coccineus (20 to 27 points). The advantage of perennial vines is their resistance to sudden changes in climatic conditions (40 %) compared to annual forms. Therefore, they are more preferable for greening the urban environment. To enhance the decorative effect in the seasonal aspect, it is recommended to combine the expansion of species and form diversity of plants (perennial and annual lianas, tree and shrub, floral vegetation). It is established that the climatic conditions of the steppe and forest-steppe zone within the Saratov region are quite favorable for the normal growth and development of tree and shrub vegetation, including herbaceous lianas. Thus, the reasonable use of wood vines in combination with traditional types of plantings will create comfortable living conditions for the population, regulate the optimal temperature balance and create favorable microclimatic conditions.


Author(s):  
Pavlova N.R. ◽  
Dzerkal V.M. ◽  
Ponomareva А.А.

In order to preserve, reproduce and effectively use the natural complexes and objects of the DniproDelta as one of the most valuable natural floodplain-littoral complexes in Europe, which have special environmental, recreational, historical and cultural, scientific, educational and aesthetic value, and ensurethe conservationof «DniproDelta»wetland of theinternational importance,the National Natural Park «Lower Dnipro»was created(Decree of the President of Ukraine of November 24, 2015 No 657/2015).The flora of the higher vascular plants of the Park contains 820 species, 40 species of which (4.9% of the total number) are woody plants. Rosaceae Juss. (14 species), Salicaceae Mirb. (7 species), Aceraceae Juss. (3 types) are leading families of the dendroflora of the Park.Biomorphological characteristics of tree plant species in the flora of the Lower Dnipro National Nature Park were carried out according to the following classifications: 1) K. Raunkiersystem of plant life forms; 2) ecological and morphological classification of life forms of I. G. Serebryakov; 3) architectural models of F. Alle, R. Oldeman and P. Tomlinson; 4) classification of the life forms of plants of the temperate zone, which takes into account the vegetative propagation by O. V. Smirnova, L. B. Zaugolnova.AnalysisoftypesofbiomorphsaccordingtotheclassificationofK. Raunkiershowedthatthevastmajorityofdendrofloraspeciesbelongtophanerophytes, amongthem, dependingontheheightoftheplant, therearedifferentgroups-megaphanerophytes(e.g., Populustremula), mesophanerophytes(Salixalba), microphaneorphytes, nanophanerophytes(Amygdalusnana) andhamephytes(Ephedradistachia).According to the ecological and morphological classification of I. G. Serebryakov life forms, the flora of the Park is dominated by forest-steppe trees and forest-type trees.The trees which belong to one life form often differ in the principles of growth and formation of the crown, branching, and general habitus, which is generally considered as an architectural model of a particular species. According to the classification of architectural models by F. Alle, R. Oldeman and P. Tomlinson, in the flora of the Park, there are five models among which the species formed by the model of Tomlinson have a significant representation, and the species formed by the models of Manzheno and Champagne have a smaller representation.Key words:flora, tree, classification, life form, bush. З метою збереження, відтворення і ефективного використання природних комплексів та об’єктів дельти річки Дніпро як одного з найцінніших природних заплавно-літоральних комплексів у Європі, які мають особливу природоохоронну, оздоровчу, історико-культурну, наукову, освітню та естетичну цінність, забезпечення збереження водно-болотного угіддя міжнародного значення «Дельта р. Дніпро» створено Національний природний парк «Нижньодніпровський» (Указ президента України від 24 листопада 2015 року No 657/2015).Флора вищих судинних рослин Парку попередньо складає 820 видів, з них 40 видів (4,9% від загальної кількості) –деревні рослини.Провідні родини дендрофлори Парку –Rosaceae Juss. (14 видів), SalicaceaeMirb. (7 видів), AceraceaeJuss. (3 види). Біоморфологічну характеристику видів деревних рослин у флорі національного природнього парку «Нижньодніпровський» проведено за класифікаціями: 1) система життєвих форм рослин К. Раункієра; 2) еколого-морфологічна класифікація життєвих форм І. Г. Сєрєбрякова; 3) архітектурні моделі Ф. Аллє, Р. Ольдемана і П. Томлінсона; 4)класифікація життєвих форм рослин помірної зони, яка враховує вегетативне розмноження О. В. Смирнової, Л. Б. Заугольнової.Аналіз типів біоморф за класифікацією К. Раункієра показав, що переважна більшість видів дендрофлори належить до фанерофітів, серед них, в залежності від висоти рослини, виділяють різні групи –мегафанерофіти (наприклад, Populus tremula), мезофанерофіти (Salix alba), мікрофанерофіти (Amorpha fruticosa), нанофанерофіти (Amygdalus nana) та хамефіти (Ephedra distachia).За еколого-морфологічною класифікацією життєвих форм І. Г. Сєрєбрякова у флорі Парку домінують дерева лісостепового типу та дерева лісового типу.Дерева, які відносяться до однієї життєвої форми, часто відрізняютьсяпринципами наростання та формування крони, галуженням, загальним габітусом, що загалом розглядається як архітектурна модель конкретного виду. За класифікацією архітектурних моделей Ф.Аллє, Р. Ольдемана і П. Томлінсона у флорі Парку виділено п’ять моделей, серед яких, значне представництво мають види, що формуються за моделлю Томлінсона, менше представництво мають види, що формуються за моделями Манжено та Шампанії.Ключові слова: флора, дерево, класифікація, життєва форма, кущ.


Author(s):  
И. К. Решетова ◽  
М. В. Добровольская ◽  
А. Н. Меркулов

В статье рассмотрены палеоантропологические материалы грунтовых захоронений середины I тыс. до н. э., расположенных на территории Верхнего Дона. Находки получены в результате раскопок многослойного памятника Ксизово-19. Работы проводились Раннеславянской археологической экспедицией ИА РАН под руководством А. М. Обломского. Исследование антропологических коллекций проводилось по комплексной биоархеологической программе и позволило осветить ряд вопросов об образе жизни населения этой эпохи. Были проанализированы показатели уровня стрессов и физических нагрузок в рассматриваемой группе. Следует обратить внимание на очень высокий процент присутствия зубных патологий. При сравнении серий из грунтовых погребений и подкурганных захоронений выявлены различия в состоянии зубочелюстной системы и присутствие патологических состояний, фиксируемых на зубах в большей степени в группе из курганов. The paper provides an overview of paleoanthropological remnants from ground burials dating back to the mid I mill. BC located in the Upper Don region. The finds were obtained during excavations of the Ksizovo-19 multi-layer site. The excavations were carried out by the Early Slavic Expedition of the Institute of Archaeology, RAS, led by A. M. Oblomskiy. The study of the anthropological assemblages was performed according to a comprehensive bioarchaeological program. This makes it possible to cover a number of issues regarding the life style of the population at that time. The stress level and physical activity in the studied group were analyzed. A very high percentage of dental pathologies should be noted. Comparison of series from the ground burials and the kurgans burials revealed differences in the conditions of the dentofacial systems and presence of a greater number of pathological conditions of the teeth in the kurgan series.


Author(s):  
Ю. Д. Разуваев

Комплекс памятников конца V - III в. до н. э., расположенный на р. Дон у с. Ксизово в Задонском районе Липецкой обл., включает городище, селище и грунтовый могильник. В результате радиоуглеродного датирования и анализа вещевых находок к названным столетиям отнесено пять захоронений, ранее соотносимых с гуннским временем. В итоге стало известно 17 погребений скифской эпохи, включая два парных. В них по обряду ингумации и в сопровождении довольно скудного инвентаря (стрелы, браслеты, серьги, бусы, пряслица) были захоронены 9 мужчин, 9 женщин и ребенок. Данные бескурганные комплексы дают представление о погребальных традициях оседлого населения донской лесостепи. The studied group of sites dating to the end of 5 - 3 cc. BC is located on the Don river near the village of Ksizovo in the Zadonsk district, Lipetsk region. The group includes a fortified settlement, an unfortified settlement and an in-ground cemetery. The radiocarbon dating and analysis of the found artifacts refer the five graves earlier dated to the Hun period to the above-mentioned centuries. Today the number of the Scythian graves totals 17, including two double burials. Nine males, nine females and one child were buried in these graves performed according to the inhumation funerary rite with rather scarce funeral offerings (arrowheads, bracelets, pendants, beads, spindle whorls). These burial sites without kurgans give an insight into funerary traditions of the sedentary population inhabiting the Don forest-steppe belt.


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