scholarly journals Diversity of Algae and Cyanobacteria and Bioindication Characteristics of the Alpine Lake Nesamovyte (Eastern Carpathians, Ukraine) from 100 Years Ago to the Present

Diversity ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 256
Author(s):  
Petro M. Tsarenko ◽  
Olena P. Bilous ◽  
Olha M. Kryvosheia-Zakharova ◽  
Halyna H. Lilitska ◽  
Sophia Barinova
Keyword(s):  
Species Composition ◽  
Structural Changes ◽  
Algal Species ◽  
Taxonomic Composition ◽  
Alpine Lake ◽  
Algal Flora ◽  
Ecological Analysis ◽  
Modern Species ◽  
Eastern Carpathians ◽  
Infraspecific Taxa

The species diversity and changes in the structural dynamics of the algal flora from the alpine lake Nesamovyte has been studied for 100 years. During the period of investigations, 234 species (245 infraspecific taxa) were revealed to cover more than 70% of the modern species composition of the studied lake. The modern biodiversity of algae is characterized by an increase in the number of widespread forms, a change from the baseline “montane” complex in comparison to the beginning of the 20th century. Nevertheless, the Nesamovyte Lake still has a unique algae composition that is typical for high-mountainous European lakes. The presence of a different complex of conventionally arctic species of algae, in particular, diatoms is discussed. Structural changes in the taxonomic composition of the algal flora of the lake as well as in the complex of the leading genera, species and their diversity are revealed. An ecological analysis of the algal species composition of the lake showed vulnerability and degradation to the ecosystem of the lake. On this basis, the issue regarding the question of protection and preservation of the algae significance and uniqueness of the flora of algae in the Nesamovyte Lake are discussed.

scholarly journals Changes in Algal Species Composition of Alpine Lake Nesamovyte (Eastern Carpathians, Ukraine) from 100 Years Ago to Present <sup>†</sup>

2021 ◽  
Author(s):  
Olena Bilous ◽  
Petro Tsarenko ◽  
Olha Kryvosheia-Zakharova ◽  
Halyna Lilitska ◽  
Yuriy Malakhov ◽  
...  
Keyword(s):  
Species Composition ◽  
Algal Species ◽  
Alpine Lake ◽  
Eastern Carpathians

scholarly journals Characteristic features of the structure and spatial distribution of phytoplankton in the Sotka river in the State nature reserve «Pinezhskii»

2021 ◽  
pp. 148-160
Author(s):  
Наталья Геннадьевна Отченаш ◽  
Геннадий Александрович Дворянкин ◽  
Сергей Николаевич Артемьев ◽  
Николай Владимирович Климовский
Keyword(s):  
Species Composition ◽  
Nature Reserve ◽  
Water Area ◽  
Taxonomic Composition ◽  
Algal Flora ◽  
Karst River ◽  
Oligotrophic Water ◽  
State Nature Reserve ◽  
Characteristic Features ◽  
High Level

На территории Пинежского природного заповедника впервые исследован фитопланктон основного водотока ООПТ - карстовой р. Сотка. Приведены данные таксономического состава альгофлоры по основным ее отделам и данные анализа видового богатства. Установлено, что видовой состав фитопланктона представлен 56 таксономическими единицами, в том числе 46 диатомовыми, 6 зелеными, 2 эвгленовыми, 1 золотистой и 1 сине-зелёной. Для фитопланктонного сообщества р. Сотка характерны зональность и мозаичность распределения численности и биомассы, необычные для полугорных рек, к которым относится водоток. Отмечена неоднородность видового состава и комплекса доминант, наблюдаемая по всей исследованной акватории. Очевидно, это результат комплексного воздействия специфических экологических характеристик реки и в первую очередь - высокого уровня минерализации. В целом р. Сотка можно отнести к флористически обедненным олиготрофным водоемам со значительным преобладанием диатомовых водорослей, низкими количественными показателями численности и зонально-высокими значениями биомассы. Экологическое состояние водотока оценивается как хорошее, с умеренным содержанием органических веществ в воде. Phytoplankton of the main watercourse of the Pinezhsky Nature Reserve, the karst river Sotka, was studied for the first time. Taxonomic composition of the algal flora and the analysis of species richness are presented. The species composition of phytoplankton is represented by 56 taxonomic units, including 46 diatoms, 6 green, 2 euglena, 1 golden and 1 cyanobacteria. For the phytoplankton community of the river Sotka is characterized by zoning and mosaic distribution of abundance and biomass, unusual for semi-mountain rivers, to which the watercourse belongs. The heterogeneity of the species composition and complex of dominants, observed throughout the studied water area, was noted. Obviously, this is the result of the complex impact of the specific ecological characteristics of the river and, first of all, the high level of mineralization. In general, river Sotka can be attributed to floristically depleted oligotrophic water bodies with a significant predominance of diatoms, low quantitative indices of abundance and zonal high values of biomass. The ecological state of the watercourse is assessed as good, with a moderate content of organic matter in the water.

scholarly journals Green and charophytic algae of the high-mountain Nesamovyte and Brebeneskul lakes (Eastern Carpathians, Ukraine)

2019 ◽  
Vol 64 (1) ◽  
pp. 53-64 ◽  
Author(s):  
Petro Tsarenko ◽  
Konrad Wołowski ◽  
Joanna Lenarczyk ◽  
Olena Bilous ◽  
Halyna Lilitska
Keyword(s):  
Species Composition ◽  
Algal Species ◽  
Mountain Lakes ◽  
Monitoring Data ◽  
High Mountain ◽  
High Mountain Lakes ◽  
Lake Ecosystems ◽  
Eastern Carpathians ◽  
Ecological Parameters ◽  
Bioindication Methods

AbstractA study of green and charophytic algae diversity in two high-mountain lakes in the Eastern Carpathians (Ukraine) identified 99 species (109 taxa at species and intraspecific rank) in 35 genera from different ecotopes of the studied lakes. Algal species composition was characterized, and the ecological parameters of the lakes were determined from monitoring data recorded over the last century. Environmental analyses using bioindication methods based only on data on the composition of green and charophytic algae confirmed that the environmental inferences were accurate. Degradation of the Nesamovyte and Brebeneskul lake ecosystems, as compared with their earlier states, was noted.

Species composition and distribution of marine macro algae at Co To and Thanh Lan archipelago

2020 ◽  
Vol 20 (3) ◽  
pp. 267-276
Author(s):  
Dam Duc Tien ◽  
Nguyen Thi Mai Anh ◽  
Linh Manh Nguyen ◽  
Pham Thu Hue ◽  
Lawrence Liao
Keyword(s):  
Species Composition ◽  
Littoral Zone ◽  
Marine Algae ◽  
Similarity Coefficient ◽  
Algal Flora ◽  
Average Value ◽  
Site Number ◽  
Species Composition And Distribution ◽  
Total Species ◽  
Macro Algae

This paper exhibites species composition and distribution of marine seaweed at 10 sites of Co To and Thanh Lan islands in May 2019. The studies record 76 species of marine algae in the area, belonging to four divisions: Cyanophytes, Rhodophytes, Ochrophytes and Chlorophytes. Among them, five species are classified into Cyanophytes (comprising 6.6% of total species); thirty-four species into Rhodophytes (44.7%); twenty-one species into Ochrophytes/Phaeophytes (27.6%) and sixteen species into Chlorophytes (21.1%). The species composition of marine seaweeds in Co To and Thanh Lan shows significant differences as follows: 22 species (sites number 4 and 10) to 58 species (site number 2) and the average value is 38.7 species per site. Sørensen similarity coefficient fluctuates from 0.33 (sites number 5 and 10) to 0.84 (sites number 1 and 3) and the average value is 0.53. The current investigations show that four species of twenty-one species are collected in the littoral zone and forty-two species in the sub-littoral zone (in which there are thirteen species distributed in both littoral zone and sub-littoral zone). The algal flora in Co To and Thanh Lan is characterized by subtropics.

Development of Forest Shelterbelts Considering Statistical Forecasts Modelling of Local Weather

2021 ◽  
Vol 18 (1) ◽  
pp. 7-14
Author(s):  
Irina Volkova ◽  
Kseniia Pitulko ◽  
Anzhelika Sergeeva ◽  
Saida Pshidatok
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Structural Changes ◽  
Moscow Oblast ◽  
Phytopathogenic Bacteria ◽  
Heat Damage ◽  
Class 1 ◽  
Local Weather ◽  
Species Class

This work aims to study the effect of high temperatures and phytopathogenic bacteria on different types of trees in the forest shelterbelts. Therefore, in 2018, 17 tree species were studied from 50 sample sites in the Moscow oblast (Russia). Leaf scorching, diseases caused by phytopathogenic bacteria, and heat damage to the crowns were examined in 5224 tree species. Based on the degree of crown damage, the studied tree species were divided into four classes. It was found that the heat damage to tree crowns was identical between the three sampling aspects (correlation coefficient 0.99). The plant species composition must be considered when developing forest shelterbelts. A long-term forecast on structural changes of planted areas is possible, considering the species composition and climatic characteristics of the region. Class 5 includes only chestnut; class 4 includes three species; class 3 is represented by seven species. Class 2, includes six species, and is the most suitable in developing forest plantations. No tree species in class 1 were found (trees with no damage). There is a connection between pathologies and heat injuries in trees from classes 4 to 5 (correlation 0.89).

Materials to cyanobacterial and algal flora from volcanic soils of Shiveluch volcano

2021 ◽  
pp. 135-138
Author(s):  
Rezeda Z. Allaguvatova ◽  
Veronika B. Bagmet ◽  
Arthur Yu. v Nikulin ◽  
Shamil R. Abdullin ◽  
Andrey A. Gontcharo
Keyword(s):  
Species Composition ◽  
Kamchatka Peninsula ◽  
Algal Flora ◽  
Volcanic Soils ◽  
Shiveluch Volcano ◽  
Nitzschia Palea ◽  
Terrestrial Cyanobacteria ◽  
Composition Study ◽  
Cyanobacteria And Algae ◽  
Tetradesmus Obliquus

During the species composition study of terrestrial cyanobacteria and algae from volcanic soils of Shiveluch Volcano (Kamchatka peninsula, Russia) eighteen taxa from five phyla were revealed: Cyanobacteria – 4, Bacillariophyta – 4, Ochrophyta – 2 (Eustigmatophyceae – 1, Xanthophyceae – 1), Charophyta – 1, Chlorophyta – 7 (Chlorophyceae – 2, Trebouxiophyceae – 5). Nitzschia communis Rabenhorst, Nitzschia palea (Kützing) W. Smith, Eolimna minima (Grunow) Lange-Bertalot, Eremochloris sp., Tetradesmus obliquus (Turpin) M.J. Wynne, Nostoc edaphicum Kondratyeva were most frequency.

scholarly journals The Effects of the Invasive Seaweed Asparagopsis Armata on Native Rock Pool Communities: Evidences from Experimental Exclusion

2020 ◽  
Author(s):  
Carla Silva ◽  
Marco Lemos ◽  
Rui Gaspar ◽  
Carlos Gonçalves ◽  
João Neto
Keyword(s):  
Algal Species ◽  
Taxonomic Composition ◽  
Habitat Destruction ◽  
Rock Pools ◽  
Red Macroalgae ◽  
Invasive Seaweed ◽  
Shallow Subtidal ◽  
Intertidal Seaweed ◽  
Macroalgal Assemblage ◽  
Asparagopsis Armata

Biological invasions represent a threat to ecosystems, through competition and habitat destruction, which may result in significant changes of the invaded community. Asparagopsis armata is a red macroalgae (Rodophyta) globally recognized as an invasive species. It is found from the intertidal to shallow subtidal areas, on rock or epiphytic, forming natural vegetation belts on exposed coasts. This study evaluated the variations on native intertidal seaweed and macroinvertebrate assemblages inhabiting rock pools with and without the presence of the invasive macroalgae A. armata. To achieve this, manipulation experiments on Atlantic (Portugal) rock pools were done. Three rock pools were maintained without A. armata by manual removal of macroalgae, and three others were not experimentally manipulated during the study period and A. armata was freely present. In this study the variations between different rock pools were assessed. Results showed different patterns in the macroalgae composition of assemblages but not for the macrobenthic communities. Ellisolandia elongata was the main algal species affected by the invasion of A. armata. Invaded pools tended to show less species richness, showing a more constant and conservative structure, with lower variation of its taxonomic composition than the pools not containing A. armata, where the variability between samples was always higher. Despite the importance of the achieved results, further data based on observation of long-term series are needed, in order to further understand more severe effects of the invader A. armata on native macroalgal assemblage.

scholarly journals The Diversification and Intensification of Crop Rotations under No-Till Promote Earthworm Abundance and Biomass

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 919
Author(s):  
María Pía Rodríguez ◽  
Anahí Domínguez ◽  
Melisa Moreira Ferroni ◽  
Luis Gabriel Wall ◽  
José Camilo Bedano
Keyword(s):  
Species Composition ◽  
Crop Production ◽  
Positive Impact ◽  
Organic Matter Content ◽  
Taxonomic Composition ◽  
Matter Content ◽  
Crop Rotations ◽  
Subtle Change ◽  
No Till ◽  
Novel Approach

The diversification and intensification of crop rotations (DICR) in no-till systems is a novel approach that aims to increase crop production, together with decreasing environmental impact. Our objective was to analyze the effect of different levels of DICR on the abundance, biomass, and species composition of earthworm communities in Argentinean Pampas. We studied three levels of DICR—typical rotation (TY), high intensification with grass (HG), and with legume (HL); along with three references—natural grassland (NG), pasture (PA), and an agricultural external reference (ER). The NG had the highest earthworm abundance. Among the DICR treatments, abundance and biomass were higher in HL than in HG and, in both, these were higher than in TY. The NG and PA had a distinctive taxonomic composition and higher species richness. Instead, the DICR treatments had a similar richness and species composition. Earthworm abundance and biomass were positively related to rotation intensity and legume proportion indices, carbon input, and particulate organic matter content. The application of DICR for four years, mainly with legumes, favors the development of earthworm populations. This means that a subtle change in management, as DICR, can have a positive impact on earthworms, and thus on earthworm-mediated ecosystem services, which are important for crop production.

scholarly journals Diversity and Species Composition of Subaerial Algal Communities in Forested Areas of Meghalaya, India

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Diana Kharkongor ◽  
Papiya Ramanujam
Keyword(s):  
Relative Humidity ◽  
Species Composition ◽  
Algal Species ◽  
Sacred Grove ◽  
Algal Communities ◽  
Tree Barks ◽  
Significant Difference ◽  
Forested Areas ◽  
Mixed Plantation ◽  
Disturbed Forest

The study deals with a comparative study on diversity and species composition of subaerial algal communities from tree barks of closed undisturbed sacred grove, mixed plantation, and open disturbed forest. A total of 85 taxa had been recorded, 30 cyanobacteria and 55 algal species belonging to six classes of algae. Sacred grove harboured the highest subaerial algal diversity compared to those of plantation and open disturbed forest. There was a strong significant difference in species composition among the three different sampling areas. High number of diatoms with 14 species was recorded in sacred grove. Cyanobacteria with 22 species were the frequent group in disturbed forest whereas Trentepohliales dominated in plantation. Canonical correspondence analysis confirmed that high photon irradiance favored the growth of cyanobacteria in disturbed forest. The abundance of Trentepohliales members correlated to high rainfall and photon irradiance. High diversity and presence of many diatom species in undisturbed Mawphlang sacred grove were associated with low photon irradiance and high relative humidity and could also be due to a presence of suitable substrata formed by the growth of mosses. Sunlight, relative humidity, and rainfall were the important factors which played a major role in determining the diversity and distribution of subaerial algal communities.

Variability of Abies alba-dominated forests in Central Europe

2014 ◽  
Vol 9 (5) ◽  
pp. 495-518
Author(s):  
Krzysztof Świerkosz ◽  
Kamila Reczyńska ◽  
Karel Boublík
Keyword(s):  
Species Composition ◽  
Central Europe ◽  
Abies Alba ◽  
Field Work ◽  
Silver Fir ◽  
Habitat Conditions ◽  
Ecological Analysis ◽  
R Software ◽  
The Czech Republic ◽  
The Alps

AbstractUsing vegetation databases from Poland, the Czech Republic, Austria, Slovakia and our own material collected during a field work, we have analysed the variability of species composition of Abies alba-dominated communities in Central Europe. Analysis was performed using a modified TWINSPAN algorithm in the JUICE software. Ecological analysis was performed on the basis of mean Ellenberg indicator values with a MoPeT_v1.0.r script prepared in R software. In general, the findings indicated that there are at least 8 types of Central European silver fir-dominated forests with different patterns in species composition and habitat conditions. These are the oligotrophic subcontinental silver fir forests of the Polish highlands, oligotrophic (sub)montane silver fir forest, hygrophilous silver fir forests, oligo-mesotrophic (sub)montane silver fir forests, mesotrophic (sub)montane silver fir forests, submontane and montane calcicolous silver fir forests of the Alps and the Carpathians, eutrophic silver fir-beech forests and silver fir ravine forests. The main conclusion is that the diversity of species composition of Abies alba-dominated forests in Central Europe is lower than described in current regional synthesis, which was confirmed by ecological analyses.

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