scholarly journals BRIEF STUDY OF THE FLORISTIC COMPOSITION OF ALGAE IN PURIFICATION FACILITIES AND ON THE REGULARITIES OF THEIR DEVELOPMENT

2021 ◽  
Vol 6 (5(38)) ◽  
pp. 3-4
Author(s):  
M.I. Mustafayeva
Keyword(s):  
Species Composition ◽  
Floristic Composition ◽  
Industrial Effluents ◽  
Pond Water ◽  
Organic Mineral ◽  
Hydrochemical Composition

The hydrochemical composition of pond water, which plays a major role in the development and formation of algae flora, has been clarified, as a result, it has been established that pollution of ponds with organic, mineral and toxigenic substances increases from municipal, industrial effluents. Due to this, the species composition of water changes. Ecological and sanitary assessment of biological ponds based on the species composition of algae is given. Comparative analyzes of the algoflora of biological ponds of the purification facilities of Bukhara with the analogous flora of the ponds of Uzbekistan and a detailed study of the algae flora of biological ponds of the purification facilities of Bukhara are given.

scholarly journals Phyllostomidae assemblage (Chiroptera: Mammalia) in altitudinal forests at the Parque Estadual do Ibitipoca, Southeast of Minas Gerais, Brazil

2016 ◽  
Vol 106 (0) ◽  
Author(s):  
Rodrigo M. Mello ◽  
Pedro H. Nobre ◽  
Marco A. Manhães ◽  
Alexmar S. Rodrigues
Keyword(s):  
Species Composition ◽  
Floristic Composition ◽  
Abundant Species ◽  
Minas Gerais ◽  
Forest Types ◽  
Mountainous Areas ◽  
Ecological Relevance ◽  
Forest Region ◽  
Study Sites ◽  
Artibeus Lituratus

ABSTRACT Many studies have demonstrated the ecological relevance and great biodiversity of bats in Brazil. However, mountainous areas have been disproportionately less sampled, mainly in the Southeast. The aim of this study was to identify and compare the richness and diversity of Phyllostomidae, the most diverse bat family, in different forest types in Parque Estadual do Ibitipoca, trying to understand the causes of possible differences. The Parque Estadual do Ibitipoca is inserted in the Serra da Mantiqueira's domain, in an Atlantic Forest region known as "Zona da Mata", state of Minas Gerais, with an altitudinal range between 1200-1784 meters. The study was conducted in two forest types, classified as "Nanofloresta Nebular" and "Floresta Nebular", whose respective data on richness and diversity were compared. The bats were captured with 8-10 mist nets for 14 months (April 2011 to May 2012) and four nights per month totaling 62,171.25 m2h of capture effort. A total of 392 captures (12 species) belonging to the Phyllostomidae family were obtained. The most abundant species were Sturnira lilium (59.9%), Platyrrhinus lineatus (11.3%), Artibeus lituratus (8.7%) and Carollia perspicillata (7.6%). The two sampled areas presented differences in bat richness, diversity and species composition, and this difference was predominantly influenced by S. lilium. It is likely that the observed difference in the assembly of bats between the two study sites depends on the variation in floristic composition. The records of A. lituratus and P. lineatus in a few months of the year and close to Ficus mexiae bearing ripe fruits suggests that at least these species move to the park for a few periods of the year in search of food resources, possibly moving through the altitudinal landscapes.

scholarly journals Floristic composition and phytodiversity status of Sitakunda Ecopark, Chittagong, Bangladesh

2016 ◽  
Vol 5 (1) ◽  
pp. 29-45 ◽  
Author(s):  
Md Anwarul Islam ◽  
Mohammad Mahfuzur Rahman ◽  
Gazi Mosharof Hossain
Keyword(s):  
Species Composition ◽  
Plant Species ◽  
Monsoon Season ◽  
Vascular Plant ◽  
Floristic Composition ◽  
Diversity Indices ◽  
Vascular Plant Species ◽  
Plant Groups ◽  
Plant Families

The present study dealt with the exploration and documentation of the floristic composition and phyto-diversity of Sitakunda Eco-park, Chittagong, Bangladesh. A total of 412 vascular plant species under 315 genera belonging to 94 plant families have been recorded from the study area during February, 2013 to April, 2015. Out of these recorded taxa, 330 were dicotyledons, 62 were monocotyledons, 5 were gymnosperms and 15 were pteridophytes. Among those, the maximum 144 species belonged to herbs followed by 138, 75 and 55 species as trees, shrubs and climbers, respectively. The species composition among the plant families varied in plant groups. In dicotyledonous group, Euphorbiaceae appeared to be the largest family with 35 species, whereas Poaceae showed the largest family containing 30 species among monocotyledonous group. The highest values of both Shannon-Weiner and Simpson diversity indices have been observed as 3.82 and 0.98, respectively to site D during monsoon season, whereas the lowest values 3.19 and 0.95, respectively of these indices were recorded in site A during summer season.Jahangirnagar University J. Biol. Sci. 5(1): 29-45, 2016 (June)

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.

scholarly journals Impacts of Human Activities on Tree Species Composition Along the Forest Savanna Boundary in Nigeria

2016 ◽  
Vol 47 (2) ◽  
pp. 115 ◽  
Author(s):  
Christiana Ndidi Egbinola
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Human Activities ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Forest Species ◽  
Tree Species Composition ◽  
Study Sites ◽  
The Impact ◽  
The Relationship

The study investigated the tree species composition along the forest-savanna boundary in Oyo state of Nigeria with the aim of assessing the impact of human activities on the floristic composition. A transect was placed along the study area and species data was collected from quadrats placed in study plots within different study sites. Detrended Correspondence Analysis (DCA) was used to determine vegetation assemblages, while both correlation and the analysis of variance (ANOVA) were used to show the relationship between species in the different study sites. Results of the DCA revealed three species assemblages, an area with only forest species, another with only savanna species and a third with both forest/savanna species. ANOVA results further revealed that within the forest and savanna assemblages, species in mature and successional sites were alike. The study therefore revealed that human activities’ within the region is leading to the establishment of savanna species and an elimination of forest species.

scholarly journals Tram tracks as specific anthropogenic habitats for the growth of plants

2016 ◽  
Author(s):  
Paulina Woźnica ◽  
Alina Urbisz ◽  
Andrzej Urbisz ◽  
Izabella Franiel
Keyword(s):  
Species Composition ◽  
Dominant Species ◽  
Nitrate Nitrogen ◽  
Plantago Lanceolata ◽  
Floristic Composition ◽  
Amaranthus Retroflexus ◽  
Achillea Millefolium ◽  
Silene Vulgaris ◽  
Anthropogenic Habitats ◽  
Hieracium Pilosella

Although tramway tracks are found in most cities, their flora is not thoroughly researched. Many more studies relate to railway areas as specific anthropogenic habitats for the development of plants. Both railway and tram tracks represent specific ecological migration corridors for plants. The objective of this study was to determine the relationship between the floristic composition and selected soil parameters of tram tracks. In 2014-2015, floristic studies were carried out along tram tracks in the Upper Silesian conurbation (southern Poland). Depending on the dominant species, five groups of sites with varying floristic composition were distinguished. Five plots with an area of 1 m2 were randomly selected in each of the sites. The species composition was determined at each plot together with the cover-abundance of all species occurring at a given plot according to Westhoff’s and van Maarel’s scale. Soil samples were collected from each plot and analysed for pH, the content of biogenic elements and heavy metals. A total of 329 species of vascular plants were identified on the tram tracks of the surveyed area, and 40 species on the plots. The dominant species included: Amaranthus retroflexus, Achillea millefolium, Plantago lanceolata, Hieracium pilosella, Silene vulgaris, Taraxacum sp. and Trifolium repens. Grouping of plots in respect of soil factors largely reflects their species composition. It has been found that the content of nitrate nitrogen, lead and phosphorus has the strongest impact on the floristic diversity of the railway tracks. Based on these parameters, three groups of species were distinguished: nitrophytes, metallophytes and common, i.e. not closely associated with the studied soil properties. Three habitat types of varying plant species composition were distinguished based on the content of nitrate nitrogen and lead: 1) nitrophilous dominated by Amaranthus retroflexus, 2) with increased content of heavy metals, dominated by Silene vulgaris and 3) mesotrophic dominated by meadow species (Achillea millefolium, Plantago lanceolata, Hieracium pilosella, Taraxacum sp., Trifolium repens).

scholarly journals Komposisi Jenis dan Struktur Vegetasi Tepi Hutan, Taman Nasional Gunung Ciremai, Jawa Barat

2021 ◽  
Vol 7 (1) ◽  
pp. 17-24
Author(s):  
Suci Dian Hayati Iskandar ◽  
Dwika Bramasta ◽  
Peniwidiyanti ◽  
Nilna Kamala ◽  
Muhammad Basrowi ◽  
...  
Keyword(s):  
Species Composition ◽  
Plant Species ◽  
National Park ◽  
Floristic Composition ◽  
Water Source ◽  
Quantitative Structure ◽  
Forest Edges ◽  
Source Areas ◽  
Composition And Structure ◽  
J Curve

Mount Ciremai National Park has a high ecological function as a major catchment and water source areas. The objective of this research was to obtain information on floristic composition and structure in the edge forest of Seda Block, Mount Ciremai National Park. To carried out the research, the method used in the analysis vegetation was quadrat transect at an elevation of 602-614 m asl. The results showed that species composition dominated by the families of Euphorbiaceae and Moraceae, consisting of 3 stratas of heading A to C where strata A occupied by Elaeocarpus sp. (40 m) and Ficus involucrata (30 m). Ficus involucrata has the widest heading cover on the observation plot. The condition of the forest quantitative structure generally demonstrates good conditions by forming a reversed J curve, as well as a relatively moderate diversity of plant species and there are no species of plant that dominate the forest edges.

The role of climate on floristic composition in a latitudinal gradient in the Brazilian Atlantic Forest

2018 ◽  
Vol 151 (3) ◽  
pp. 303-313 ◽  
Author(s):  
Eduardo Magalhães Borges Prata ◽  
Aloysio De Pádua Teixeira ◽  
Carlos Alfredo Joly ◽  
Marco Antonio Assis
Keyword(s):  
Species Composition ◽  
Species Distribution ◽  
Latitudinal Gradient ◽  
Floristic Composition ◽  
Annual Rainfall ◽  
Mean Annual Temperature ◽  
Brazilian Atlantic Forest ◽  
The North ◽  
Latitudinal Range

Background and aims – Latitudinal gradients have an important influence on species distribution reflecting the effects of environmental factors such as temperature, rainfall, soil, and geographical distance. In the southeastern Brazilian Atlantic Forest, the role of climatic variables in the floristic composition is better known for altitudinal gradients of the Serra do Mar Mountains rather than for the latitudinal gradient. Here, we investigated the effects of mean annual temperature and rainfall on tree species distribution and composition in a latitudinal gradient in the Atlantic forest.Methods – We calculated each species frequency of occurrence and the latitudinal range. We used multivariate analyses (direct ordination, Hierarchical Clustering followed by Indicator Species analysis and NMDS) to investigate variation in floristic composition, and regression analyses to evaluate mean annual temperatures and rainfall effects on tree species composition along the latitudinal gradient (21°S to 28°S).Key results – A total of 789 species were registered, of which a majority (646 species) were present in less than 20% of the sampled areas, and only four species (0.5%) were present in more than 80% of the sampled areas. Only ten species (1.3%) reached the maximum latitudinal range (~6°). We found a strong correlation between variation in floristic composition and the spatial position in the latitudinal gradient. The cluster analyses detected two main floristic groups, one composed by the forests from Rio de Janeiro (21°S to 23°S) and the second by the forests from São Paulo, Paraná and Santa Catarina States (23°S to 28°S). The multiple regression analysis revealed a strong effect of the climatic variables on the variation of the floristic composition along the latitudinal gradient (r2 = 0.81, P < 0.001), where 62.82% of the variation were explained by mean annual temperature, 8.27% by annual rainfall and 10.45% by both variables together.Conclusions – The restricted distribution of most species may be explained by variations in mean annual temperature and annual rainfall along the latitudinal gradient. For instance, the decreasing mean annual temperature along the coast and the occurrence of frosts at higher latitudes may limit the southward distribution of some species while the lower annual rainfall (with marked seasonality) in the north of the gradient may limit the northward distribution of other species. Although mean annual temperature explained most of the variation in species composition along the latitudinal gradient, the abrupt variation in annual rainfall may explain the high floristic dissimilarity detected in the north of the gradient.

scholarly journals Floristic composition of crustose coralline algae from the St. Peter and St. Paul Archipelago, a summit of the Mid-Atlantic Ridge

Phytotaxa ◽  
2014 ◽  
Vol 190 (1) ◽  
pp. 17 ◽  
Author(s):  
Thalita Mendes Crespo ◽  
Ricardo Da Gama Bahia ◽  
Gavin Willian Maneveldt ◽  
Gilberto Menezes Amado Filho
Keyword(s):  
Species Composition ◽  
Saint Paul ◽  
Floristic Composition ◽  
Coralline Algae ◽  
Depth Interval ◽  
Crustose Coralline Algae ◽  
Equatorial Atlantic ◽  
Structural Reinforcement ◽  
Equatorial Atlantic Ocean ◽  
Mid Atlantic Ridge

Crustose Coralline Algae (CCA) are important constituents of tropical coral reef environments throughout the world’s oceans, acting as structural reinforcement and recruitment cues. Despite their importance and their ubiquity, very little is known of the biodiversity of CCA in remote areas of the world’s oceans. On the Saint Peter and Saint Paul Archipelago (SPSPA), located in the central equatorial Atlantic Ocean, CCA occur abundantly in intertidal rock pools and the surrounding subtidal zones. This study represents the first attempt at detailing the CCA species composition for the archipelago along a depth interval between 0 to 70 m. Seven taxa of CCA were identified: Corallinaceae sp., Hydrolithon rupestre, Hydrolithon sp., Lithophyllum johansenii, Lithothamnion muelleri, Mesophyllum engelhartii, and Titanoderma pustulatum pustulatum. A decrease in CCA species richness and change in species composition was seen from shallow to deeper zones that can be explained by a significant reduction in temperature and photon irradiance observed bellow 30 m depth.

Ecosystem dynamics of disturbed and undisturbed sites in north Queensland wet tropical rain forest. I. Floristic composition, climate and soil chemistry

1993 ◽  
Vol 9 (3) ◽  
pp. 349-363 ◽  
Author(s):  
Robert A. Congdon ◽  
John L. Herbohn
Keyword(s):  
Species Composition ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Soil Chemistry ◽  
Floristic Composition ◽  
Selective Logging ◽  
Ecosystem Dynamics ◽  
Low Fertility ◽  
Available Phosphorus ◽  
Kjeldahl Nitrogen

ABSTRACTThis paper introduces studies of nutrient cycling in disturbed and undisturbed rain forest plots in the upper catchment of Birthday Creek, near Paluma, North Queensland. The catchment is underlain by granite and has soils of comparatively low fertility. Differences between unlogged plots and plots disturbed 25 years previously by selective logging are still apparent. Disturbed plots have soils with higher bulk densities and pH, lower CEC, kjeldahl nitrogen and available phosphorus concentrations, and changed species composition. The data suggest that recovery from selective logging is dependent on soil fertility and intensity of disturbance.

scholarly journals A compendium of the flora of the islands in the lower Vyg River in Karelia

VAVILOVIA ◽  
2020 ◽  
Vol 2 (3) ◽  
pp. 56-70
Author(s):  
L. Yu. Shipilina
Keyword(s):  
Species Composition ◽  
Floristic Composition ◽  
Northern Taiga ◽  
Hydroelectric Power Station ◽  
Anthropogenic Pressure ◽  
Hydroelectric Power ◽  
Economic Activities ◽  
Vegetation Development ◽  
Current State ◽  
New Habitats

The study of regional floras is one of the main tasks of floristics, which allows one to make the most complete inventory and analyze the species composition. The analysis results in a reconstructed picture of the vegetation development in the investigated area. Human economic activities in the area have created new habitats for the species whose main distribution range is far beyond boundaries of the area. Therefore, the main objective of the study was to study the flora of the islands in the lower Vyg River. To achieve the goal, the route-reconnaissance method was used. The performed work revealed the constancy of the species composition of the flora of the islands. All in all, 136 species were found on the islands, 50% of which are common in this territory and make up the main core, which is part of the northern taiga flora. The differences between the floristic composition of the islands are due to the current state of the Vyg River, altered by the dam of the hydroelectric power station, and a large anthropogenic pressure associated with the development of tourism in the places of petroglyphs accumulation.

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