scholarly journals Synantropic flora in phytocoenoses of ecological network (the case of Vinnytsia region, Ukraine)

2018 ◽  
Vol 8 (1) ◽  
pp. 118-123 ◽  
Author(s):  
V. I. Shavrina ◽  
E. D. Tkach ◽  
V. P. Mykolayko
Keyword(s):  
Vascular Plants ◽  
Floristic Diversity ◽  
Ecological Network ◽  
Ecological Corridors ◽  
Synanthropic Species ◽  
Adventive Flora ◽  
The Mean

<p>The floristic diversity of the connecting areas of the four ecological corridors (further referred to as ecocorridors) of Vinnytsia region includes 262 synanthropic species (45.2%) out of 580 species of higher vascular plants in total. Apophytes are predominant: 138 of them were found at the Nemiysky, 120 – at the Dniestrovsky, 104 – at the Southern Bug, and 59 – at the Lyadivskyi eocorridors. According to the degree of adaptation to anthropogenically disturbed conditions, these apophytes<br />belong to hemiapophytes — 85, 73, 61, and 25 species respectively at the ecocorridors. The adventive flora was evaluated on the time of entry, the naturalization degree, and the mean of distribution. It was found that archaeophytes predominate among anthropophytes according to the time of entry, epecophytes – to the naturalization degree, and akolyutophytes – to the mean of distribution. Five indices – synanthropization (IS), apophytization (IAp), anthropophyzation (IAn), archeophytization (IAr), and kenophytization (IKn) – have been determined. Moreover, it was established that apophytic processes prevail over the adventive ones at the areas studied.</p>

scholarly journals Ecological Network Optimization in Urban Central District Based on Complex Network Theory: A Case Study with the Urban Central District of Harbin

2021 ◽  
Vol 18 (4) ◽  
pp. 1427
Author(s):  
Shuang Song ◽  
Dawei Xu ◽  
Shanshan Hu ◽  
Mengxi Shi
Keyword(s):  
Complex Network ◽  
Network Optimization ◽  
Network Theory ◽  
Habitat Destruction ◽  
Landscape Patterns ◽  
Ecological Network ◽  
Complex Network Theory ◽  
Ecological Corridors ◽  
Low Degree ◽  
Central District

Habitat destruction and declining ecosystem service levels caused by urban expansion have led to increased ecological risks in cities, and ecological network optimization has become the main way to resolve this contradiction. Here, we used landscape patterns, meteorological and hydrological data as data sources, applied the complex network theory, landscape ecology, and spatial analysis technology, a quantitative analysis of the current state of landscape pattern characteristics in the central district of Harbin was conducted. The minimum cumulative resistance was used to extract the ecological network of the study area. Optimized the ecological network by edge-adding of the complex network theory, compared the optimizing effects of different edge-adding strategies by using robustness analysis, and put forward an effective way to optimize the ecological network of the study area. The results demonstrate that: The ecological patches of Daowai, Xiangfang, Nangang, and other old districts in the study area are small in size, fewer in number, strongly fragmented, with a single external morphology, and high internal porosity. While the ecological patches in the new districts of Songbei, Hulan, and Acheng have a relatively good foundation. And ecological network connectivity in the study area is generally poor, the ecological corridors are relatively sparse and scattered, the connections between various ecological sources of the corridors are not close. Comparing different edge-adding strategies of complex network theory, the low-degree-first strategy has the most outstanding performance in the robustness test. The low-degree-first strategy was used to optimize the ecological network of the study area, 43 ecological corridors are added. After the optimization, the large and the small ecological corridors are evenly distributed to form a complete network, the optimized ecological network will be significantly more connected, resilient, and resistant to interference, the ecological flow transmission will be more efficient.

scholarly journals Construction of a Landscape Ecological Network for a Large-Scale Energy and Chemical Industrial Base: A Case Study of Ningdong, China

Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 344
Author(s):  
Haochen Yu ◽  
Jiu Huang ◽  
Chuning Ji ◽  
Zi’ao Li
Keyword(s):  
Ecological Restoration ◽  
Large Scale ◽  
Ecological Environment ◽  
Ecological Network ◽  
High Importance ◽  
Fractional Coverage ◽  
Industrial Base ◽  
Ecological Corridors ◽  
Vegetation Fractional Coverage

A large-scale energy and chemical industry base is an important step in the promotion of the integrated and coordinated development of coal and its downstream coal-based industry. A number of large-scale energy and chemical industrial bases have been built in the Yellow River Basin that rely on its rich coal resources. However, the ecological environment is fragile in this region. Once the eco-environment is destroyed, the wildlife would lose its habitat. Therefore, this area has attracted wide attention regarding the development of the coal-based industry while also protecting the ecological environment. An ecological network could improve landscape connectivity and provide ideas for ecological restoration. This study took the Ningdong Energy and Chemical Industrial Base as a case study. Morphological spatial pattern analysis was applied to extract core patches. The connectivity of the core patches was evaluated, and then the ecological source patches were recognized. The minimum cumulative resistance model, hydrologic analysis and circuit theory were used to simulate the ecological network. Then, ecological corridors and ecological nodes were classified. The results were as follows: (1) The vegetation fractional coverage has recently been significantly improved. The area of core patches was 22,433.30 ha. In addition, 18 patches were extracted as source patches, with a total area of 9455.88 ha; (2) Fifty-eight potential ecological corridors were simulated. In addition, it was difficult to form a natural ecological corridor because of the area’s great resistance. Moreover, the connectivity was poor between the east and west; (3) A total of 52 potential ecological nodes were simulated and classified. The high-importance nodes were concentrated in the western grassland and Gobi Desert. This analysis indicated that restoration would be conducive to the ecological landscape in this area. Furthermore, five nodes with high importance but low vegetation fractional coverage should be given priority in later construction. In summary, optimizing the ecological network to achieve ecological restoration was suggested in the study area. The severe eco-environmental challenges urgently need more appropriate policy guidance in the large energy and chemical bases. Thus, the ecological restoration and ecological network construction should be combined, the effectiveness of ecological restoration could be effectively achieved, and the cost could also be reduced.

scholarly journals Ecosystemic Services Linked to Water and Plant diversity of the San José de Chazo-Santa Fe de Galán Region

2021 ◽  
Author(s):  
J. Murillo Conterón ◽  
R. Peña Murillo ◽  
D. Román Robalino
Keyword(s):  
Ecosystem Services ◽  
Natural Resources ◽  
Vascular Plants ◽  
Volumetric Method ◽  
Floristic Diversity ◽  
Agricultural Activities ◽  
Santa Fe ◽  
San Jose ◽  
Importance Value ◽  
Palabras Clave

In the higher part of the Santa Fe de Galán parish, intensive agricultural activities are carried out that cause problems of erosion, disappearance of species of fauna and flora, decrease in water and deterioration of páramo areas due to the advance of the agricultural frontier. These activities present a threat to the sustainability of the San José de Chazo-Santa Fe de Galán region, due to the degradation of its natural resources that directly affect the vital development of 1200 families belonging to this region. The present investigation aims to study ecosystem services linked to water, as well as floristic diversity, for which data was collected and systematized from the Ciénega páramo in the San José de Chazo-Santa Fe de Galán region. According to the data collected on floristic diversity, 29 samples of terrestrial vascular plants were registered, corresponding to 18 families, 26 genera and 29 species; moss and lichen of unidentified family, genus and species were also collected. The highest index of importance value by species and family was presented by the moss with 20.39% and 18.17%, respectively. The average monthly flow during the February–May period observed through the volumetric method was 6.34 L/s. Keywords: capacity, flow, diversity, paramo, ecosystem services, sustainability. Resumen En la parte alta de la Parroquia Santa Fe de Galán se desarrollan actividades agropecuarias intensivas que provocan problemas de erosión, desaparición de especies de fauna y flora, disminución del agua y deterioro de áreas de páramo por el avance de la frontera agrícola. Estas actividades representan una amenaza para la sostenibilidad de la Regional San José de Chazo– Santa Fe de Galán, debido a la degradación de sus recursos naturales que inciden directamente en el desarrollo vital de 1200 familias pertenecientes a esta Regional. La presente investigación tiene como objetivo estudiar los servicios ecosistémicos ligados al agua y diversidad florística, cuyos datos fueron recolectados y sistematizados del páramo de la Ciénega en la Regional San José de Chazo–Santa Fe de Galán. De acuerdo con los resultados de diversidad florística se registró 29 muestras de plantas vasculares terrestres, correspondiente a 18 familias, 26 géneros y 29 especies, también se recolectó musgo y liquen de familia, género y especie no identificados. El mayor índice de valor de importancia por especie y familia lo presentó el musgo con 20,39% y 18,17%, respectivamente. El caudal promedio mensual durante el período febrero – mayo a través del método volumétrico fue de 6,34 L/s. Palabras clave: aforo, caudal, diversidad, páramo, servicios ecosistémicos, sostenibilidad.

scholarly journals Indigenous vascular plants of the Soutpansberg, South Africa

Bothalia ◽  
2019 ◽  
Vol 49 (1) ◽  
Author(s):  
Norbert Hahn
Keyword(s):  
South Africa ◽  
Conservation Planning ◽  
Vascular Plants ◽  
Biosphere Reserve ◽  
Herbarium Specimens ◽  
Mountain Range ◽  
Floristic Diversity ◽  
Literature Reviews ◽  
The Status ◽  
Herbarium Collections

Background: The first checklist for the Soutpansberg was published in 1946, and the second list was compiled by the author in 2006 as part of his doctoral thesis. Currently, there is a need for an updated account of the biodiversity of the Soutpansberg Centre of Endemism and Diversity for conservation planning in the Vhembe Biosphere Reserve, within which the Soutpansberg is the principle geomorphological feature.Objectives: To present an updated list of vascular plants recorded for the Soutpansberg.Method: The list was compiled from various sources including literature reviews, herbarium specimens, herbarium databases and personal observations.Results: This article presents the most geographically accurate and taxonomically updated list of the indigenous vascular flora of the Soutpansberg, the northernmost mountain range of South Africa. Altogether 2443 taxa are recorded belonging to 922 genera in 187 families and 64 orders.Conclusion: The list presented in this article confirms the status of the Soutpansberg as a centre of floristic diversity in southern Africa. Notable is the higher-order diversity of the flora. It is likely that both future surveys and reviews of herbarium collections will add new taxa to the current total.

Phytodiversity of the "Samara plavni" regional landscape park

2020 ◽  
Vol 49 ◽  
pp. 17-25
Author(s):  
B. A. Baranovski ◽  
I. A. Ivanko ◽  
L. O. Karmyzova ◽  
Y. A. Harvart ◽  
V. V. Nicolaieva ◽  
...  
Keyword(s):  
Invasive Species ◽  
Vascular Plants ◽  
Vascular Plant ◽  
Species Selection ◽  
Submerged Vegetation ◽  
Surrounding Area ◽  
Adventive Flora ◽  
Regional Landscape ◽  
Natural Groups ◽  
Selection Of

Рresented the results of floroecological, hydrobotanical and geobotanical researches of the Regional Landscape Park "Samara Plavni". Regional Landscape Park (RLP) "Samara Plavni" is located in the waters of the Samara Bay, which was formed as a result of flooding of the floodplain of the Samara River during the creation of the Zaporozhye (Dnieper) Reservoir and the surrounding area. Conducted a systematic and bioecological analysis of the flora of vascular plants. Studied the composition of the rare fraction of flora and associated flora element. The research was carried out according to the generally accepted methods of floristic, geobotanical and hydrobotanical research. Bioecomorphic characteristics of species (selection of ecomorphs) are compiled according by A. L. Belgard ecomorph system using the following ecomorphs: biomorphs (one-, two-, perennials); heliomorphs (relation to light); hygromorphs (relation to the aquatic environment); tropomorphs (relation to nutrition); cenomorphs (growth in certain phytocenoses). Ecological characteristics of species were given from literature sources and according to the results of many years of own research. The analysis of the adventitious fraction was carried out at the time of drift – archaeophytes, neophytes. Advent status was determined on the basis of literature data. Vegetation of the regional landscape park "Samara Plavni" is represented by natural and semi-natural groups. The main area of shallow water is occupied by massifs of Phragmites australis (Cav.) Trin. ex Steud and groups of submerged vegetation. The tree and shrub vegetation of the park is represented by natural forest complexes, semi-natural groups and artificial plantations. Meadow and meadow-swamp vegetation of the landscape park is represented by complexes of associations of mesophytes and hygrophytes. The floristic list of vascular plant flora is 617 species. Hemicryptophytes, perennials, sciogeliophytes and heliophytes, mesotrophs, mesophytes, hygrophytes predominate here. Among cenomorphs, most species are represented by meadow (139) and forest (108) species. The rare fraction of flora is 73 species. There are 128 species of ruderal flora and 140 species of adventive flora, including 6 invasive species. At the time of entry into the study area allochthonous element of flora is divided into two groups: archaeophytes – 63 species (45%) and neophytes – 77 species (55%).

scholarly journals Ecological Network Model in Shahdagh National Park

2021 ◽  
pp. 61-69
Author(s):  
Эмиль Акиф оглы Джабраилов
Keyword(s):  
Network Model ◽  
National Park ◽  
Anthropogenic Impacts ◽  
Field Research ◽  
High Growth ◽  
Ecological Network ◽  
Buffer Zones ◽  
Ecological Corridors ◽  
Study Results ◽  
Core Areas

The purpose of this article is to explore the possibility of creating an ecological network that includes core areas, buffer zones, ecological corridors, and restoration areas in the section of the Shamakhi district of the Shahdagh National Park (Azerbaijan). Materials and methods. As materials, we used vector and raster data, as well as literature materials to determine and analyse the elements of an ecological network. Operations were performed by using ArcGIS 10.8 and ERDAS Imagine software. During the field research, observations were made in order to match the elements of the ecological network with the cameral study. Results. In the article, protected natural areas are presented as the core areas and the surrounding areas as buffer zones under the relevant legislation. Riverbeds, mountain passes, trails, and forests which should be planted in the areas we offer, were considered as main factors during the construction of ecological corridors in the national park and the buffer zones. In this case, “least-cost” modelling was applied and ecological corridors were designated to ensure connectivity between core areas. As a result, the optimal ecological network model for the study area has been developed and mapped in the article. Conclusion. The high growth rate of consumption of natural resources led to the loss of biodiversity in the last decades. At present, it is important to take the necessary measures, and connectivity of ecosystems and natural complexes play an important role in sustainability. The presented model in the study can help to conserve biodiversity, reduce anthropogenic impacts, eliminate environmental barriers, and develop appropriate forms of land use.

scholarly journals Vascular Plants and Vegetation of the Sayula sub-basin, Jalisco, Mexico

2018 ◽  
Vol 96 (1) ◽  
pp. 103
Author(s):  
Miguel Ángel Macías-Rodríguez ◽  
Héctor Gerardo Frías-Ureña ◽  
Sergio Honorio Contreras-Rodríguez ◽  
Alfredo Frías-Castro
Keyword(s):  
Vascular Plants ◽  
Deciduous Forest ◽  
Field Work ◽  
Tropical Deciduous Forest ◽  
Floristic Diversity ◽  
Vegetation Types ◽  
Timely Manner ◽  
Complex Landscape ◽  
The One ◽  
Total Species

<p><strong>Background:</strong> The Sayula sub-basin presents a complex landscape composed of plants communities that to date have not been studied in a timely manner, so this study contributes to the knowledge of the flora and vegetation of the area and the State.</p><p><strong>Question:</strong> i) How many and which families, genera and species are in the Sayula sub-basin? ii) What are the main biological forms of the species? iii) Are there species under any category of protection? iv) How many vegetation types are present within the region?<br /> <strong>Studied species:</strong> Ferns, Gymnosperms and Angiosperms.<br /> <strong>Study site and years of study:</strong> The Sayula sub-basin, Jalisco, Mexico; from February 2012 to October 2015.<br /> <strong>Methods:</strong> Through the literature review and field work the floristic checklist was elaborated. In addition, with the use of geographic information systems, a map of land use and vegetation was made.<br /> <strong>Results:</strong> A total of 687 species were recorded, including 415 genera and 113 families. The five main families were Poaceae, Asteraceae, Fabaceae Solanaceae and Euphorbiaceae representing 42.6 % of the total species and 36.6 % of the genera. It should be noted that the predominant biological forms were herbs with 409, 105 shrubs and 74 trees. On the other hand, 47 species registered under some protection category of which, only one species <em>Cleomella jaliscensis</em> is endemic to the region. Finally, eight vegetation types were determined, being the tropical deciduous forest the one that occupies greater surface and presents greater floristic diversity.<br /> <strong>Conclusions:</strong> It is important to emphasize that during the realization of the work, agricultural activities were detected affecting the flora and vegetation, threatening the biodiversity and the natural balance of the region.</p>

scholarly journals SYNANTROPIZATION FLORA OF PRIPYAT POLESIE AS AN INDICATOR OF ITS ANTHROPOGENIC TRANSFORMATION

2018 ◽  
Vol 63 (3) ◽  
pp. 276-285
Author(s):  
A. M. Mialik ◽  
V. I. Parfenov
Keyword(s):  
Vascular Plants ◽  
Natural Ecosystems ◽  
Anthropogenic Transformation ◽  
Natural Region ◽  
Geographic Structure ◽  
Degree Of Naturalization ◽  
Synanthropic Species ◽  
Wide Range ◽  
Mediterranean Origin ◽  
Natural Flora

The article deals with the peculiarities of the synanthropic component of the flora of the Pripyat Polesie – a natural region located in the southern part of Belarus. It is represented by 810 species of vascular plants that can grow in disturbed human habitats. Among the synanthropic species, 563 taxons (69.5 % of their total number) are adventitious (or anthropophytes), and 247 (or 30.5 %) are aboriginal (apophytes) in relation to the flora under consideration. The geographic structure of the apophytes of the flora of Pripyat Polesie indicates their wide range and weak zonal confinement. Anthropophytes have a more complex genesis with respect to the time and manner of skidding, as well as the degree of naturalization in the natural ecosystems of the southern part of Belarus. They are based on a group of plant species of ancient mediterranean origin. The biomorphological features of the synanthropic species, as well as their relation to environmental factors such as moisture and soil fertility, show that in the process of synanthropization and anthropogenic transformation, the natural flora and natural vegetation cover acquire features characteristic of phytophores in more southern areas.

scholarly journals Professor Povilas Snarskis – Life Dedicated to the Research of Lithuanian Flora

Botanica ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 101-108
Author(s):  
Jūratė Tupčiauskaitė ◽  
Radvilė Rimgailė-Voicik
Keyword(s):  
Higher Education ◽  
Vascular Plants ◽  
Popular Science ◽  
Research Centre ◽  
Herbarium Specimens ◽  
Floristic Diversity ◽  
Professional Career ◽  
Pedagogical Institute ◽  
Historical Times ◽  
Vilnius University

AbstractThe paper presents a brief biography of Professor Povilas Snarskis, and discusses the importance of his work for Lithuania. After defending PhD at Vytautas Magus University, P. Snarskis was able to collect invaluable data on the Lithuanian floristic diversity and distribution. He actively participated in the development of the Lithuanian higher education. In 1947, he became a professor and taught botany at Vilnius University and Vilnius Pedagogical Institute. During his professional career, P. Snarskis has published about 60 research and popular science works. He was a co-author of Flora of Lithuanian SSR and his three guides to native vascular plants still have their high value. The number of Snarskis’ herbarium specimens deposited at Vilnius University Herbarium (WI) and the Nature Research Centre, Institute of Botany Herbarium (BILAS) exceeds 20.000. P. Snarskis was an innovator, who used his logic and creativity, and constructed guidelines to achieve his goals in difficult historical times.

scholarly journals Dryopteris goldiana × D. intermedia, a Natural Fern Hybrid New to Canada

2003 ◽  
Vol 117 (4) ◽  
pp. 649
Author(s):  
Paul M. Catling
Keyword(s):  
Vascular Plants ◽  
Floristic Diversity ◽  
Eastern Ontario ◽  
First Time

The rare fern hybrid Dryopteris goldiana × D. intermedia is reported for the first time from Canada on the basis of a collection from eastern Ontario. The plant occurred in rich deciduous woods in an extensive seepage area at the base of a slope. The immediate vicinity had an unusually high floristic diversity and 25 associated vascular plants are listed. Distinguishing characteristics of the hybrid are outlined.

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