scholarly journals Diversity, dynamics and ecological analysis of flora of reclaimed soil

2019 ◽  
Vol 46 (2) ◽  
pp. 153-163
Author(s):  
Kateryna Andrusevych ◽  
Galina Zadorozhnaya
Keyword(s):  
Vegetation Cover ◽  
Floristic Composition ◽  
Environmental Parameters ◽  
Life Forms ◽  
Black Soil ◽  
Control Site ◽  
Ecological Groups ◽  
Ecological Analysis ◽  
Reclaimed Soil ◽  
Diversity Dynamics

AbstractThe flora of vegetation cover of sod-lithogenic soil on loess loams was studied at a reclaimed site in the Nikopol manganese-ore basin. The control site is located on the black soil of the steppe area. The species composition of plants was studied in both sites annually for three years. Ecological analysis of the flora was carried out according to Raunkiaer’s system of life-forms and Belgard’s system of ecomorphs. It has been established that the floristic composition on the reclaimed site is significantly poorer than that of the steppe site. The reclaimed site was found to be have fewer species and a smaller number of families. The comparative inconstancy and dynamism of floristic composition on reclaimed soil is shown. The reclaimed ecosystem is distinguished by a significant share of the participation of annual and biennial plant forms. This indicates the anthropogenic transformation of the vegetation cover of the reclaimed soil. Also, a distinctive feature of the reclaimed soil flora is the smaller number of ecological groups of species. Such groups are united according to the ecological optimum to one of the environmental parameters.

scholarly journals Anthropogenic changes in environmental conditions of phytocoenoses of medium sized-sized Ukrainian river valleys (based on the example of the River Tyasmyn – a tributary of the Dnieper)

2016 ◽  
Vol 24 (2) ◽  
Author(s):  
V. V. Lavrov ◽  
O. I. Blinkova ◽  
N. V. Miroshnyk ◽  
Т. О. Grabovska
Keyword(s):  
Environmental Conditions ◽  
System Analysis ◽  
Floristic Composition ◽  
Life Forms ◽  
Mapping Method ◽  
Ecological Groups ◽  
Anthropogenic Changes ◽  
Species Dominance ◽  
Mobile Species ◽  
The Right

The problem of anthropogenic degradation of rivers is usually marked by its multi-sectoral and often international character as well by the large number of sources of environmental threat. Therefore, its solution requires a systematic approach based on transparent and coordinated interagency and international cooperation. The River Dnieper inUkrainehas undergone a remarkable transformation as a result of the construction of a cascade of reservoirs. Anthropogenic damage to the plants and soil that cover its basin have caused damage to the functioning of ecological regimes of theDnieper’s tributaries. Small and medium-sized rivers are dying. In this article, attention is paid to a typical middle-sized (164 km) river of theDnieperBasin, the Tyasmyn. Its middle and lower parts are located in the overtransformed Irdyn-Tyasmyn valley. During the last glaciation it formed the central part of the right arm of the ancientDnieper. Regulation of the Tyasmyn runoff, pollution, the creation of theKremenchugreservoir on theDnieper, grazing and recreational load have led to the threat of the river degrading. Therefore, the aim of this article is to characterize the structure of the herbaceous vegetation in the central and lower parts of the Tyasmyn valley and assess the level of its dependence on anthropogenic changes in the conditions of the ecotypes. The methods used are: retrospective and system analysis, comparative ecology (ecological profile or transect), botanic methods, phytoindication, the mapping method and mathematical statistics. The features of changes in environmental conditions of ecotypes of the river valley have been shown through systematic, biomorphological, ecomorphic structure of the herbaceous cover, the ratio of ecological groups and changes in types of ecological strategy of species, phytodiversity. We found 89 species of vascular plants. The most diverse families were Asteraceae, Poaceae and Lamiaceae. The biomorphological range of phytodiversity of the Tyasmyn valley is characterized by a high proportion of adventive and ruderal species, dominance of vegetative mobile species and disturbed distribution of all spectrum types for coenotic morphs. Depletion of the floristic composition and formation of monodominant groups in the middle of the valley were found. The overall measure of phytodiversity reached its maximum in the areas furthest from the mouth of the valley, lower towards the valley mouth and lowest in the area of pasture and recreational digression. Perennial hemicryptophytes and therophytes dominate the spectrum of life forms. Herbaceous plants without rosettes prevailed in the structure of above ground shoots and placement of leaves, while plants without special adaptations prevail in the structure of underground shoots. In the hydromorph structure with increasing distance from the mouth of the river there is a tendency for the share of hydrophytes, subhydrophytes to fall and, conversely, that of submesophytes to increase. Hygromesophytes and mesophytes prevail almost everywhere. Changes in the acidomorphic and nitromorphic structure of plants were not found. Semieutrophes, hemieurytopic, hemistenotopic plants and types of transitional groups of ecological strategies, including CR-, CS-, and CRS-strategies prevail. Vegetation of middle and lower flow of the river Tyasmyn degrades at stages II–IV of anthropogenic transformation. 

scholarly journals Flora of fallow lands of the Podlaski Przełom Bugu mesoregion

2012 ◽  
Vol 60 (1) ◽  
pp. 175-190
Author(s):  
Janina Skrzyczyńska ◽  
Piotr Stachowicz
Keyword(s):  
Floristic Composition ◽  
Life Forms ◽  
Ecological Groups ◽  
Fallow Land ◽  
Bromus Secalinus ◽  
Fallow Lands ◽  
Systematic List ◽  
Silene Tatarica ◽  
Biological Spectrum ◽  
Centaurium Erythraea

Studies on flora of fallow lands of the Podlaski Przełom Bugu mesoregion were carried out between 2001 and 2003 in the area of 77 localities, situated in 20 communes. A systematic list of fallow land flora was made and its variation with respect to occurrence frequency, biological spectrum, persistence and belonging to geographic-historical and sociological-ecological groups was analyzed. Flora of fallow lands of the Podlaski Przełom Bugu mesoregion includes 442 species included in 60 families and 241 botanical genera. The most numerous group comprises very rare, rare and quite frequent species. In the floristic composition of the analysed flora, apophytes (72.2%) predominate over anthropophytes (2.8%) as well as perennials (61%) over ephemerals (39%). Considering the biological spectrum of flora, hemicryptophytes (49%) and terophytes (32%) predominate over other life forms. Forest and shrub species (18.5%) as well as meadow (17%) and xerothermic sward plants (17.4%) have the largest share in the flora. The abundant occurrence of segetal (15.8%) and long-lived ruderal communities (8.1%) was also noted. Moreover, the occurrence of 25 species endangered with extinction in fallow land communities of the Południowopodlaska Lowland was noted. They are as follows: <i>Nigella arvensis</i>, <i>Potentilla recta</i>, <i>Platanthera chlorantha</i>, <i>Agrostemma githago</i>, <i>Prunella grandiflora</i>, <i>Populus alba</i>, <i>Silene tatarica</i>, <i>Papaver argemone</i>, <i>Papaver rhoeas</i>, <i>Veronica polita</i>, <i>Hieracium floribundum</i>, <i>Bromus secalinus</i>, <i>Polygonum bistorta</i>, <i>Geum alleppicu</i>, <i>Astragalus arenarius</i>, <i>Centaurium erythraea</i>, <i>Veronica agrestis</i>, <i>Veronica verna</i>, <i>Cirsium rivulare</i>, <i>Allium oleraceum</i>, <i>Hierochlo&#235; odorata</i>, <i>Chenopodium polyspermum</i>, <i>Vinca minor</i>, <i>Dipsacus silvestris</i> and <i>Campanula latifolia</i>.

scholarly journals Ecological analysis of the flora of the Kremenets Mountains National Nature Park (on the example of the mountains Divochi Skeli, Strakhova, Masliatyn, Chercha, Zamkova, Bozha)

2021 ◽  
Vol 280 ◽  
pp. 11008
Author(s):  
Nataliia Lisova ◽  
Myroslav Syvyj ◽  
Olena Volik
Keyword(s):  
National Parks ◽  
Vegetation Cover ◽  
National Park ◽  
Abiotic Factors ◽  
Life Forms ◽  
Forest Steppe ◽  
Ecological Analysis ◽  
Important Impact ◽  
Nature Park

One of the elements that ensure the sustainability of the environment is the vegetation cover. The vegetation cover contributes to the balanced functioning of ecosystems. It is the national parks rich in phytodiversity that attract the attention of scientists. The article presents an ecological analysis of the flora of the Kremenets Mountains National Park. The research was carried out in the areas of the mountains Divochi Skeli, Strakhova, Masliatyn, Chercha, Zamkova, Bozha. 10 florocoenotypes were identified in the study areas. The most numerous is the nemoral forest coenotype. The flora was analyzed for abiotic factors such as light, temperature, humidity, soil. It is these indicators that have an important impact on the formation of vegetation cover and the life processes of plants. It was found that facultative heliophytes, mesothermal plants, mesophytes, and mesotrophs predominate in the study areas. The vegetation cover has clear forest-steppe features. The classification of life forms of plants is given. Relicts and endemics are confined to steppe and calcepetrophilic areas. Flora synanthropization is observed on the study areas.

Carabidae of Barnaul city parks: ecological characteristics and species composition

2018 ◽  
Vol 8 (2) ◽  
pp. 348-353
Author(s):  
E. A. Kuchina ◽  
N. D. Ovcharenko ◽  
L. D. Vasileva
Keyword(s):  
Species Composition ◽  
Diversity Index ◽  
Similarity Index ◽  
Life Forms ◽  
Ground Beetles ◽  
Forest Steppe ◽  
Ecological Groups ◽  
Dominant Group ◽  
Species Diversity Index ◽  
Steppe Species

<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>

scholarly journals Floristic composition of the Montane Forest in the Almadina-Barro Preto axis, Southern Bahia, Brazil

2014 ◽  
Vol 14 (1) ◽  
Author(s):  
Macielle Macedo Coelho ◽  
André Márcio Amorim
Keyword(s):  
Species Richness ◽  
Tropical Forests ◽  
Atlantic Forest ◽  
Floristic Composition ◽  
Woody Species ◽  
Life Forms ◽  
Montane Forest ◽  
Forest Remnants ◽  
Southern Bahia ◽  
Arboreal Habit

The aim of this study is to survey the angiosperms of two montane forest remnants in the southern Bahia, Brazil: Corcovado (SCO) and Pedra Lascada (SPL). Both fragments are located in the municipality of Almadina and Barro Preto, respectively, and are 18 km distant from each other. We sampled 899 species of angiosperms distributed in 437 genera and 116 families. The SCO was the richest area with 678 species, distributed in 367 genera and 100 families. SPL showed 466 species in 269 genera and 88 families. The percentage of species identified was 85.8% and of this total, 37.7% are endemic to the Atlantic Forest, 11.2% are endemic to southern Bahia and northern Espírito Santo and 7% are disjunct between the Atlantic Forest and Amazon. The remaining percentages (44.3%) were of species widely distributed. The richest families in the two areas were Orchidaceae (10%), Rubiaceae (7%), Bromeliaceae (5.5%), Melastomataceae (4.2%) and Poaceae (4%). The richest genera were Psychotria (2%),Piper (1.8%), Ocotea (1.6%),Vriesea (1.5%) and Peperomia (1.4%). More than half of the recorded species showed non-arboreal habit, regarding life forms documented. That comes against the assertion that many authors in the tropical forests, where species richness in angiosperms is expected for non-woody species, especially in montane forests. Twelve species have been identified as new, but seven others already described from collections previously obtained in these two areas. Orchidaceae, Rubiaceae, Poaceae and Bromeliaceae showed significant richness in this study these families are commonly reported as the richest in other inventories in the Atlantic Forest in southern Bahia reinforcing their importance to the regional flora. The high levels of richness, endemism, and the growing numbers of new taxonomic discoveries from the SPL and SCO sites indicate the biological importance of these two forest remnants. The implementation of parks or other protected environmental reserves would be essential to the conservation of its species.

scholarly journals Consideration of NDVI thematic changes in density analysis and floristic composition of Wadi Yalamlam, Saudi Arabia

2018 ◽  
Vol 7 (4) ◽  
pp. 297-306 ◽  
Author(s):  
Amal Y. Aldhebiani ◽  
Mohamed Elhag ◽  
Ahmad K. Hegazy ◽  
Hanaa K. Galal ◽  
Norah S. Mufareh
Keyword(s):  
Saudi Arabia ◽  
Vegetation Cover ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Remote Sensing Data ◽  
Floristic Composition ◽  
Water Source ◽  
Shannon Index ◽  
Landsat 8 ◽  
Main Stream

Abstract. Wadi Yalamlam is known as one of the significant wadis in the west of Saudi Arabia. It is a very important water source for the western region of the country. Thus, it supplies the holy places in Mecca and the surrounding areas with drinking water. The floristic composition of Wadi Yalamlam has not been comprehensively studied. For that reason, this work aimed to assess the wadi vegetation cover, life-form presence, chorotype, diversity, and community structure using temporal remote sensing data. Temporal datasets spanning 4 years were acquired from the Landsat 8 sensor in 2013 as an early acquisition and in 2017 as a late acquisition to estimate normalized difference vegetation index (NDVI) changes. The wadi was divided into seven stands. Stands 7, 1, and 3 were the richest with the highest Shannon index values of 2.98, 2.69, and 2.64, respectively. On the other hand, stand 6 has the least plant biodiversity with a Shannon index of 1.8. The study also revealed the presence of 48 different plant species belonging to 24 families. Fabaceae (17 %) and Poaceae (13 %) were the main families that form most of the vegetation in the study area, while many families were represented by only 2 % of the vegetation of the wadi. NDVI analysis showed that the wadi suffers from various types of degradation of the vegetation cover along with the wadi main stream.

scholarly journals Vegetation Cover Drives Arthropod Communities in Mediterranean/Subtropical Green Roof Habitats

2018 ◽  
Vol 10 (11) ◽  
pp. 4209 ◽  
Author(s):  
Ibrahim Salman ◽  
Leon Blaustein
Keyword(s):  
Vegetation Cover ◽  
Urban Areas ◽  
Green Roof ◽  
Structural Complexity ◽  
Green Roofs ◽  
Life Forms ◽  
Suitable Habitat ◽  
Positive Effects ◽  
Habitat Template ◽  
Arthropod Abundance

Worldwide, urban areas are expanding both in size and number, which results in a decline in habitats suitable for urban flora and fauna. The construction of urban green features, such as green roofs, may provide suitable habitat patches for many species in urban areas. On green roofs, two approaches have been used to select plants—i.e., matching similar habitat to green roofs (habitat template approach) or identifying plants with suitable traits (plant trait approach). While both approaches may result in suitable habitats for arthropods, how arthropods respond to different combinations of plants is an open question. The aim of this study was to investigate how the structural complexity of different plant forms can affect the abundance and richness of arthropods on green roofs. The experimental design crossed the presence and absence of annuals with three Sedum sediforme (Jacq.) Pau (common name: stonecrops) treatments—i.e., uniformly disrupted Sedum, clumped disrupted Sedum, and no Sedum. We hypothesized that an increased structural diversity due to the coexistence of different life forms of plants on roofs is positively related to the abundance and richness of arthropods. We found that arthropod abundance and richness were positively associated with the percent of vegetation cover and negatively associated with substrate temperature. Neither arthropod abundance nor richness was influenced by the relative moisture of substrate. We also found that arthropod abundance and richness varied by green roof setups (treatments) and by seasonality. Arthropod abundance on green roofs was the highest in treatments with annuals only, while species richness was slightly similar between treatments containing annuals but varied between sampling periods. This study suggests that adding annuals to traditional Sedum roofs has positive effects on arthropods. This finding can support the development of biodiverse cities because most extensive green roofs are inaccessible to the public and can provide undisturbed habitat for several plant and arthropod species.

scholarly journals ENVIRONMENTAL CHANGE AND LANDUSE SCENARIOS UNDER CHANGING CLIMATES: THE EXPERIENCE IN THE UPPER CROSS RIVER REGION, NIGERIA

2020 ◽  
Vol 6 (11) ◽  
pp. 32-42
Author(s):  
Innocent A. Ugbong ◽  
Ivan V. Budagov
Keyword(s):  
Environmental Changes ◽  
Floristic Composition ◽  
Life Forms ◽  
Soil Conditions ◽  
Land Use Patterns ◽  
Cross River ◽  
Cross River State ◽  
Use Patterns ◽  
River Region ◽  
Descriptive Approach

This paper seeks to show that due to changing climates, there are salient marginal Sahelian conditions (conditions of aridity) emerging on the Northern fringes of Cross River State, a state that is geographical positioned in the southern rainforest belt of Nigeria. The paper adopts a simple descriptive approach and shows the distinct characteristics of this zone, in terms of floristic composition and edaphic and geomorphic structures under changing conditions. Some relationships are established between environmental variables like health, water supply and crop-yield on one hand, and climatic variation, floral life-forms and soil conditions on the other. The changing land use patterns relative to environmental changes are also examined. The paper concludes with a look at current and future adaption strategies to these climate-induced conditions.

scholarly journals Assessment of the Vegetation State of Several Under-exploited Agrostis tenuis - Festuca

2012 ◽  
Vol 69 (1) ◽  
Author(s):  
Ionel SAMFIRA ◽  
Veronica SÄ‚RÄ‚TEANU ◽  
Marius BOLDEA ◽  
Branko CUPINA
Keyword(s):  
Floristic Composition ◽  
Life Forms ◽  
Soil Reaction ◽  
Adjacent Area ◽  
Agrostis Tenuis ◽  
Economic Climate ◽  
Hill Area ◽  
Grazing Period ◽  
The Hill ◽  
Pastoral Value

The study of the grassland type Agrostis tenuis - Festuca rupicola from Valea Bistrei - Otelul Rosu has been necessary due to the great surfaces covered with grasslands from the studied area and due to the social and economic climate characterised by the orientation of the rural community from the adjacent area to agriculture after the failure of the former intensive industry.There have been studied two grassland plots of about 500 hectares, res pectively Gai and Scărisoara. The purpose of this research is to assess the state of the biodiversity and pastoral value of four Agrostis tenuis - Festuca rupicola  grasslands from the hill area. Also, there has been analysed the floristic composition and a series of ecological indexes, respectively humidity, soil reaction, temperature, light, and nitrogen. Other aspects taken in account were the life-forms spectres. The analysed grasslands are placed on Bistrei Valey, in the perimeter of the locality OÅ£elul Roșu, Caraș -Severin County. The researches have been developed during 2010-2012 period. The average elevation level in the studied area is 268 square meters. The soil from the studied area is brown type, with a pH comprised between 4.79 and 5.31. The rainfall amount is about 700 mm and the average temperature is 10 Celsius degrees. The management mode of these grasslands is extensive, the grazing period being 150 days per year. The analysed surfaces are characterised by the lack of the maintenance works, there being present erosion phenomena. The method used for the vegetation analysis is the linear point quadrate method (Daget et Poissonet, 1971), the data being used for the calculation of different ecological indexes and pastoral value. The pastoral value of the species is low in both plots due to the great contribution of the low economical values of the most of the species from the analysed grasslands.

scholarly journals Influence of Habitat Types on Diversity and Species Composition of Urban Flora—A Case Study in Serbia

Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2572
Author(s):  
Milan Glišić ◽  
Ksenija Jakovljević ◽  
Dmitar Lakušić ◽  
Jasmina Šinžar-Sekulić ◽  
Snežana Vukojičić ◽  
...  
Keyword(s):  
Species Composition ◽  
Vascular Plant ◽  
Habitat Type ◽  
Floristic Composition ◽  
Life Forms ◽  
Urban Habitat ◽  
Residential Areas ◽  
Gamma Diversity ◽  
Habitat Types ◽  
Diagnostic Species

The aim of this study was to investigate the floristic composition and diversity of seven urban habitat types in 24 Serbian cities with different climatic affiliation. In each of the 24 cities, we selected 1 ha plots representing a habitat from one of the following groups: square, boulevard, residential area with compact and with open building pattern, city park, and sites with early and mid-succession vegetation stages. All vascular plant species that occur spontaneously in these plots were observed. Data on the main climatic characteristics were collected for each plot, and data on the life forms were obtained for each species recorded. Diagnostic species were identified for each habitat type analyzed, and alpha, beta and gamma diversity were calculated. A total of 674 taxa were recorded in the studied area. Significant differences were observed in habitats by diagnostic species and by life form representation. The lowest alpha and gamma diversity and the dominance of therophytes were observed in habitat types with intensive anthropogenic impact, whereas the highest number was recorded in mid-successional sites and residential areas with a compact building pattern. The analysis showed that habitat type influences species composition much more than climate.

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