scholarly journals SEASONAL CONDITIONS OF PHYTO-FOULING OF A COASTAL PROTECTION HYDROTECHNICAL STRUCTURE (KRUGLAYA BAY, BLACK SEA)

Ekosistemy ◽  
2021 ◽  
pp. 49-59
Author(s):  
I. K. Evstigneeva ◽  
I. N. Tankovskaya
Keyword(s):  
Species Composition ◽  
Taxonomic Diversity ◽  
Taxonomic Composition ◽  
Coastal Protection ◽  
Taxonomic Structure ◽  
Ecological Groups ◽  
Seasonal Fluctuations ◽  
Quantitative Characteristics ◽  
Hydrotechnical Structure ◽  
Occurrence Of Species

The species composition, ecological and taxonomic structure, quantitative characteristics and variability of phyto-fouling of the coastal hydrotechnical structure (Kruglaya Bay, Sevastopol) in spring, summer and autumn were studied. The taxonomic composition of fouling is represented by 45 species of 29 genera, 19 families, 12 orders, 4 classes of the divisions Chlorophyta, Ochrophyta and Rhodophyta. The taxonomic leaders of the community are Rhodophyta, Cladophorales, Ceramiales, Ulvaceae, Cladophoraceae, Ceramiaceae, Ulva, Cladophora, Ceramium, ecological — marine, leading, annual and oligosaprobic species. The fouling is dominated by species with a high and medium frequency of occurrence. Most of the proportions of taxa and ecological groups are most resistant. The taxonomic diversity of the entire phyto-growth, its Rhodophyta, constant flora nucleus, minor species and some ecogroups, the occurrence of species, phytomass, the degree of community discreteness and the qualitative composition of its production dominants and subdominants are subject to seasonal fluctuations. Each season, the variability of the species composition corresponds to the norm for biological objects, the degree of variability of the phytomass is higher.

scholarly journals ЦИАНОПРОКАРИОТЫ УРОЧИЩА ТУБAЛЬСКИЙ ЛИМАН

2016 ◽  
Vol 6 (3) ◽  
pp. 414-418
Author(s):  
L. I. Arabadzhi ◽  
A. M. Solonenko ◽  
O. G. Bren ◽  
M. I. Holubev
Keyword(s):  
Species Composition ◽  
National Park ◽  
Water Reservoir ◽  
Soil Sampling ◽  
Taxonomic Structure ◽  
Natural Boundary ◽  
Cyanobacterial Mats ◽  
Natural Park ◽  
Systematic Structure ◽  
Occurrence Of Species

<p>Information about species composition of Cyanoprocaryota representatives in the natural boundary of Tubalskyi Estuary within Pryazov National Natural Park is supplemented. Taxonomic structure of identified algae species is given, the data about occurrence of species in different habitats within national park is provided. We present a systematic structure and geographical affinity of discovered algae species. We registered 38 species of cyanoprocaryotic algae of orders: Chroococcales, Oscillatoriales and Nostocales with predominance of Oscillatoriales representatives in different habitats of Tubalskyi Estuary within the areas of Pryazov National Natural Park. The greatest number of algae species had genera <em>Lyngbya, Phormidium, Microcoleus Leptolyngbya</em> – 4 species per each genera. The majority of algae species were the cosmopolitans. <em>Microcoleus tenerrimus</em> was registered in all the studied plots of soil sampling and in the water reservoir of Tubalskyi Estuary. The most abundant and distributed species was <em>Lyngbya aestuarii</em>, which formed the macroscopic growths (cyanobacterial mats).</p>

Taxonomic Diversity of Micromycete Complexes in the Root Zone of a Perennial Wild Species of Sunflower Helianthus Grosseserratus

2020 ◽  
pp. 123-130
Keyword(s):  
Species Composition ◽  
Wild Species ◽  
Root Zone ◽  
Taxonomic Diversity ◽  
Common Species ◽  
Soil Samples ◽  
Taxonomic Structure ◽  
Wild Sunflower ◽  
Two Samples ◽  
Fallow Soil

The aim of our research was to determine the peculiarities of the formation of the taxonomic structure of micromycete complexes in the root zone of the perennial wild species of sunflower Helianthus grosseserratus when grown in the South of Ukraine. Soil samples taken from the root zone of two samples of perennial wild sunflower Helianthus grosseserratus 1630 and H. grosseserratus 1201, which were grown for more than 20 years in one place in the collection nursery of the Institute of Oilseed Crops of NAAS of Ukraine, were studied. Areas where plants are grown have not been treated with herbicides. Samples of fallow soil served as a control. Soil - chernozem ordinary low-humus leached. Soil samples for analysis were taken at the end of the growing season. To isolate microscopic fungi from the soil, the generally accepted method of serial dilutions was used, followed by sowing of the soil suspension on a dense nutrient medium Chapek-Dox. The method of sowing - deep, dilution of the suspension - 1: 1000. Duration of fungi cultivation - 7-14 days in a thermostat at a temperature of 28оС. The experiment was repeated five times. The complex of fungi-micromycetes in soil samples was determined using determinants and original works. The similarity of the species composition of the soil mycobiota of the fallow and the root zone of wild sunflower was determined by the Sorensen coefficient. Reliable indicators of similarity when comparing the species composition of two different associations were considered those in which the Sorensen coefficient was more than 50%.The analysis of the taxonomic structure of the studied mycocenoses revealed qualitative differences in the genus and species composition of micromycete fungi in the rhizosphere of wild sunflower species and fallow soil. In total, of the 29 species of micromycetes we isolated, 11 were found only in the soil of the fallow. According to our data, only 4 species (A. alliaceus, Paecilomyces lilacinus, F. oxysporum var. orthoceras, M. racemosus) were common species in the soil samples of fallow and root zone Helianthus grosseserratus 1630 and H. grosseserratus 1201. The species diversity of micromycetes of the root zone of H. grosseserratus 1201 was wider, and, accordingly, more similar to the soil of the fallow - 15 common species. Micromycetes that were typical for both fallow soil and sunflower are saprotrophs of A. niveus, P. canescens, P. crustosum, P. nigricans, P. thomii, as well as opportunistic species Verticillium album and V. lateritium. A comparative analysis of the lists of species composition of micromycete complexes revealed significant differences between the mycocenoses of the root zone of wild sunflower and fallow soil, as evidenced by the calculated Sorensen coefficients. The data indicated that the similarity of the species composition of the mycobiota H. grosseserratus 1201 with fallow was 66.7% (Cs = 0.67), and Helianthus grosseserratus 1630 - only 35.8% (Cs = 0, 35). The coefficient of similarity of the species composition of the mycobiota of the root zone of wild sunflower was 0.47, which is apparently due to the peculiarities of the composition of the root exudates of plants and their selection zones, which affect the formation of microbial complexes of the rhizosphere and edaphosphere.

scholarly journals Changes in Diversity and Species Composition Across Multiple Assemblages in the eastern Chukchi Sea During Two Contrasting Years are Consistent with Borealization

Oceanography ◽  
2021 ◽  
Vol 34 (2) ◽  
Author(s):  
Franz Mueter ◽  
◽  
Katrin Iken ◽  
Lee Cooper ◽  
Jacqueline Grebmeier ◽  
...  
Keyword(s):  
Species Composition ◽  
Chukchi Sea ◽  
Benthic Communities ◽  
Taxonomic Diversity ◽  
Demersal Fish ◽  
Taxonomic Composition ◽  
The Arctic ◽  
Global Ocean ◽  
Marine Biodiversity ◽  
Study Region

The Arctic Marine Biodiversity Observing Network monitors biological assemblages on taxonomic scales ranging from microbes to seabirds on the northeast Chukchi Sea shelf to improve understanding of their responses to changing environmental conditions, including climate change. Here, we compare two years, 2015 and 2017, the latter characterized by a much larger spatial extent of warmer, more saline Pacific waters within the study region. These environmental differences were associated with changes in the taxonomic diversity and species composition of eight different assemblages. Impacts included decreases in the diversity and abundance of benthic species and increases in the diversity and abundance of zooplankton and demersal fish. These observations are consistent with the expected patterns of borealization, a term that describes changes from polar to more southern or boreal conditions and that have been observed on other Arctic inflow shelves where there is communication with the global ocean. A decoupling of the seabird assemblage from other assemblages in 2017 suggests that seabirds were unable to fully adjust to changing prey conditions in 2017. Pronounced differences in the taxonomic composition and a substantial decline in taxonomic diversity of bacteria and protists in 2017 remain unexplained but suggest that these microbes are highly susceptible to changing conditions. Continued warming of the Chukchi Sea will likely result in further borealization, with differential impacts on pelagic and benthic communities.

Macrozoobenthos in mid-mountain lakes of river Multa basin (Republic of Altai)

2021 ◽  
pp. 8-18
Author(s):  
Olga Nikolaevna Vdovina ◽  
Dmitry Mikhailovich Bezmaternykh
Keyword(s):  
Species Composition ◽  
Trophic Structure ◽  
Taxonomic Composition ◽  
Species Number ◽  
Deposit Feeders ◽  
Quantitative Characteristics ◽  
Species Lists ◽  
Filter Feeders ◽  
Polluted Waters ◽  
Benthic Animals

In August 2020, taxonomic composition and quantitative characteristics of zoobenthos from 4 lakes located in the upper reaches of the R. Multa basin (the R. Ob basin) were studied. Because of the basin inaccessibility the hydrobiological information about these lakes was previously fragmentary or absent at all. The data on macrozoobenthos composition and its structure were not available. In these lakes, 49 species of benthic invertebrates from 7 classes were identified, i.e. Demospongiae (1), Turbellaria (1), Oligochaeta (3), Gastropoda (4), Euchelicerata (1), Crustacea (1) and Insecta (38). Among insects, Diptera were the most diverse (22 chironomids out of 23 species). Beetles, mayflies and caddisflies were also found. In terms of species number, abundance and biomassб chironomids were the dominant taxonomic group in the studied lakes. The species composition of macrozoobenthos consisted of species widely spread in the Palearctic and Holarctic. The investigated lakes differed in species composition of zoobenthos. When comparing the species lists of benthic animals, lakes Sredneye Multinskoye and Poperechnoye were similar at most, whereas the fauna of Lake Nizhneye Multinskoye was the most original. The studied water bodies were distinguished by poor macroinvertebrate development and thereby corresponded to ultra-oligotrophic and oligotrophic reservoir types. The oligochaete index by Goodnight and Whitley corresponded to quality class I–II, i.e. “conditionally clean” and “slightly polluted waters”. We defined the trophic structure of macrozoobenthos of lakes and identified five main trophic groups of hydrobionts (Deposit feeders, Сollectors-detritus feeders and facultative filter feeders, Collectors-obligate filter feeders, Shredders, Predators), among which Collectors-detritus feeders and facultative filter feeders dominated.

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>

Seasonal Fluctuations and Species Composition of Fish Collected by Long-bag Stow Net in Nang-island, Yeosu

2020 ◽  
Vol 32 (2) ◽  
pp. 91-96
Author(s):  
Tae-Sik Yu ◽  
Byoung-Il Youn ◽  
Joon Kim ◽  
Kyeong-Ho Han
Keyword(s):  
Species Composition ◽  
Seasonal Fluctuations

Revision flora of makrofytes of the aquatory of the Kazantip Nature Reserve

2019 ◽  
pp. 61-72
Author(s):  
T. V. Belich ◽  
S. Ye. Sadogurskiy ◽  
S. A. Sadogurskaya
Keyword(s):  
Species Composition ◽  
Nature Reserve ◽  
Taxonomic Revision ◽  
Warm Water ◽  
Taxonomic Structure ◽  
Marine Macrophytes

The results of nomenclature-taxonomic revision of the flora marine macrophytes of the Kazantip Nature Reserve (KNR) are presented. Currently, with the new data the species composition includes 73 species and intraspecific taxon (IST) of macroalgae and sea grasses. Taxonomic structure of flora of the macrophytes of the KNR includes 4 phylums, 7 classes, 19 orders, 28 families, (F), 37 genera. Chlorophyta - 33 species, Ochrophyta - 11, Rhodophyta - 25, Tracheophyta - 4. In the flora prevail mesosaprobic (44%), annuae (58%), brackish-sea (51%), warm-water (40%) species. The category of rare fraction includes 14 species.

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.

Metagenomics Study To Compare The Taxonomy And Metabolism of a Lignocellulolytic Microbial Consortium Cultured in Different Carbon Conditions

2021 ◽  
Author(s):  
Qinggeer BORJIGIN ◽  
Bizhou ZHANG ◽  
Xiaofang Yu ◽  
Julin Gao ◽  
Xin ZHANG ◽  
...  
Keyword(s):  
Microbial Consortium ◽  
Agricultural Waste ◽  
Taxonomic Diversity ◽  
Taxonomic Composition ◽  
Microbial Consortia ◽  
Rich Diversity ◽  
Cazy Database ◽  
Taxonomic Affiliation ◽  
In Situ Biodegradation

Abstract A lignocellulolytic microbial consortium holds promise for the in situ biodegradation of crop straw and the comprehensive and effective utilization of agricultural waste. In this study, we applied metagenomics technology to comprehensively explore the metabolic functional potential and taxonomic diversity of the microbial consortia CS (cultured on corn stover) and FP (cultured on filter paper).Analyses of the metagenomics taxonomic affiliation data showed considerable differences in the taxonomic composition and functional profile of the microbial consortia CS and FP. The microbial consortia CS primarily contained members from the genera Pseudomonas, Stenotrophomonas, Achromobacter, Dysgonomonas, Flavobacterium and Sphingobacterium, as well as Cellvibrio, Azospirillum, Pseudomonas, Dysgonomonas and Cellulomonas in FP. The COG and KEGG annotation analyses revealed considerable levels of diversity. Further analysis determined that the CS consortium had an increase in the acid and ester metabolism pathways, while carbohydrate metabolism was enriched in the FP consortium. Furthermore, a comparison against the CAZy database showed that the microbial consortia CS and FP contain a rich diversity of lignocellulose degrading families, in which GH5, GH6, GH9, GH10, GH11, GH26, GH42, and GH43 were enriched in the FP consortium, and GH44, GH28, GH2, and GH29 increased in the CS consortium. The degradative mechanism of lignocellulose metabolism by the two microbial consortia is similar, but the annotation of quantity of genes indicated that they are diverse and vary greatly. The lignocellulolytic microbial consortia cultured under different carbon conditions (CS and FP) differed substantially in their composition of the microbial community at the genus level. The changes in functional diversity were accompanied with variation in the composition of microorganisms, many of which are related to the degradation of lignocellulolytic materials. The genera Pseudomonas, Dysgonomonas and Sphingobacterium in CS and the genera Cellvibrio and Pseudomonas in FP exhibited a much wider distribution of lignocellulose degradative ability.

Antarctic notothenioid fishes as subjects for research in evolutionary biology

2000 ◽  
Vol 12 (3) ◽  
pp. 276-287 ◽  
Author(s):  
Joseph T. Eastman
Keyword(s):  
Evolutionary Biology ◽  
Fish Fauna ◽  
Taxonomic Diversity ◽  
Late Eocene ◽  
Taxonomic Composition ◽  
Species Flock ◽  
Subzero Temperatures ◽  
Key Innovation ◽  
The Antarctic ◽  
Upper Slope

Antarctica is a continental island and the waters of its shelf and upper slope are an insular evolutionary site. The shelf waters resemble a closed basin in the Southern Ocean, separated from other continents by distance, current patterns and subzero temperatures. The benthic fish fauna of the shelf and upper slope of the Antarctic Region includes 213 species with higher taxonomic diversity confined to 18 families. Ninety-six notothenioids, 67 liparids and 23 zoarcids comprise 45%, 32% and 11% of the fauna, a combined total of 88%. In high latitude (71–78°S) shelf areas notothenioids dominate abundance and biomass at levels of 90–95%. Notothenioids are also morphologically and ecologically diverse. Although they lack a swim bladder, the hallmark of the notothenioid radiation has been repeated diversification into water column habitats. There are pelagic, semipelagic, cryopelagic and epibenthic species. Notothenioids exhibit the disproportionate speciosity and high endemism characteristic of fish species flock. Antifreeze glycopeptides originating from a transformed trypsinogen gene are a key innovation. It is not known when the modern Antarctic shelf fauna assumed its current taxonomic composition. A late Eocene fossil fauna was taxonomically diverse and cosmopolitan. There was a subsequent faunal replacement with little carryover of families into the modern fauna. Basal notothenioid clades probably diverged in Gondwanan shelf locations during the early Tertiary. Dates inferred from molecular sequences suggest that phyletically derived Antarctic clades arose 15–5 m.y.a.

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