scholarly journals Bioindication of the Influence of Oil Production on Sphagnum Bogs in the Khanty-Mansiysk Autonomous Okrug–Yugra, Russia

Diversity ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 207
Author(s):  
Olga Skorobogatova ◽  
Elvira Yumagulova ◽  
Tatiana Storchak ◽  
Sophia Barinova
Keyword(s):  
Species Richness ◽  
Oil Pollution ◽  
Organic Pollution ◽  
Control Site ◽  
Oil Field ◽  
Pollution Monitoring ◽  
Rehabilitation Period ◽  
Scientific Results ◽  
First Time ◽  
Contaminated Area

Algal diversity in the bogs of the Ershov oil field of the Khanty-Mansiysk Autonomous Okrug–Yugra (KMAO-Yugra) with the gradient of oil pollution between 255 and 16,893 mg kg−1 has been studied with the help of bioindication methods and ecological mapping. Altogether 91 species, varieties, and forms of algae and cyanobacteria from seven divisions have been revealed for the first time from seven studied sites on the bogs. Charophyta algae prevail followed by diatoms, cyanobacteria, and euglenoids. The species richness and abundance of algae were maximal at the control site, with charophytic algae prevailing. The species richness of diatoms decreased in the contaminated area, but cyanobacteria were tolerated in a pH which varied between 4.0 and 5.4. Euglenoid algae survived under the influence of oil and organic pollution. Bioindication revealed a salinity influence in the oil-contaminated sites. A comparative floristic analysis shows a similarity in communities at sites surrounding the contaminated area, the ecosystems of which have a long-term rehabilitation period. The percent of unique species was maximal in the control site. Bioindication results were implemented for the first time in assessing the oil-polluted bogs and can be recommended as a method to obtain scientific results visualization for decision-makers and for future pollution monitoring.

scholarly journals Algae and Cyanobacteria Diversity and Bioindication of Long-Term Changes in the Hula Nature Reserve, Israel

Diversity ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 583
Author(s):  
Sophia Barinova ◽  
Alla Alster
Keyword(s):  
Water Quality ◽  
Species Richness ◽  
Nature Reserve ◽  
Eastern Mediterranean ◽  
Monitoring Program ◽  
Organic Pollution ◽  
Ecological Groups ◽  
International Importance ◽  
First Time ◽  
Lake Hula

Lake Hula, the core of one of the most extensive wetland complexes in the Eastern Mediterranean, was drained in 1951–1958. However, about 350 hectares of papyrus marshes were allocated in the southwestern part of the previous lake and became the Hula Nature Reserve status, the first of two wetlands in Israel included in the Ramsar List of Wetlands of International Importance. The list of algae and cyanobacteria species of Lake Hula was compiled by us for the first time based on data from publications of 1938–1958, as well as our research in the Hula Nature Reserve, obtained within the framework of the monitoring program for 2007–2013. The list includes 225 species and intraspecies of algae and cyanobacteria belonging to eight phyla. The dynamics of the species richness of algae and cyanobacteria flora for 1938–2013 are shown. Species-bioindicators of water quality have been identified, and the change in their composition by ecological groups for a period of about a hundred years has been shown. Based on the species richness of algae communities, water quality indices were calculated with particular attention to changes in trophic status during the study period. The algae flora of Lake Hula and Hula Nature Reserve was found to be similar, but bioindication has revealed an increase in salinity and organic pollution in recent years.

scholarly journals Impact of gas flaring on algae in Yugra raised bogs

2020 ◽  
pp. 26-32
Author(s):  
O. N. Skorobogatova ◽  
M. A. Semochkina ◽  
A. S. Moskalyova
Keyword(s):  
Organic Pollution ◽  
Control Site ◽  
Scientific Data ◽  
Pollution Monitoring ◽  
Algal Communities ◽  
Raised Bogs ◽  
Qualitative And Quantitative ◽  
Gas Flaring ◽  
Environmental Status ◽  
The Impact

The research was aimed at studying the impact of thermal radiation from gas flaring on algal communities in raised bogs in Khanty–Mansi Autonomous Okrug – Yugra, Russia. The qualitative and quantitative parameters of the studied communities were evaluated at different distances from the flare that had been operating continuously for more than thirty years. The two-year algological field study identified 128 algae of seven phyla, inhabiting the northern sector of the circular area around the gas flare. The most numerous groups in the samples were green algae Charophyta, followed by diatoms, euglena and cyanobacteria. The lowest values of qualitative and quantitative indicators were observed in algae 100 and 50 m away from the gas flare. The species diversity and abundance of algae were maximal in the control site dominated by Charophyta. In cyanobacteria, Chrysophyta and diatoms, all the indicators increased with distance from the flare. Euglena were evenly distributed over the sites, which indicates a high tolerance to oil and organic pollution. On drawing nearer to the gas flare, the algocenoses were observed to have small-celled morphology andpoorerdiversity, some regional forms disappeared and the abundance of algae decreased. This research can provide a basis for a bioindication method to determine the environmental status of water bodies and the degree of pollution in raised bogs. The findings can be recommended as scientific data for decision making and pollution monitoring.

scholarly journals Development of the Artificial Intelligence and Optical Sensing Methods for Oil Pollution Monitoring of the Sea by Drones

2021 ◽  
Vol 11 (8) ◽  
pp. 3642
Author(s):  
Oleg Bukin ◽  
Dmitry Proschenko ◽  
Denis Korovetskiy ◽  
Alexey Chekhlenok ◽  
Viktoria Yurchik ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Autonomous Navigation ◽  
Oil Pollution ◽  
Optical Sensing ◽  
Movement Control ◽  
Oil Products ◽  
Sea Surface ◽  
Pollution Monitoring ◽  
Monitoring Methods ◽  
Marine Fuel

The oil pollution of seas is increasing, especially in local areas, such as ports, roadsteads of the vessels, and bunkering zones. Today, methods of monitoring seawater are costly and applicable only in the case of big ecology disasters. The development of an operative and reasonable project for monitoring the sea surface for oil slick detection is described in this article using drones equipped with optical sensing and artificial intelligence. The monitoring system is implemented in the form of separate hard and soft frameworks (HSFWs) that combine monitoring methods, hardware, and software. Three frameworks are combined to fulfill the entire monitoring mission. HSFW1 performs the function of autonomous monitoring of thin oil slicks on the sea surface, using computer vision with AI elements for detection, segmentation, and classification of thin slicks. HSFW2 is based on the use of laser-induced fluorescence (LIF) to identify types of oil products that form a slick or that are in a dissolved state, as well as measure their concentration in solution. HSFW3 is designed for autonomous navigation and drone movement control. This article describes AI elements and hardware complexes of the three separate frameworks designed to solve the problems with monitoring slicks of oil products on the sea surface and oil products dissolved in seawater. The results of testing the HSFWs for the detection of pollution caused by marine fuel slicks are described.

ISOTOPE-GEOCHEMICAL FEATURES OF AUTHENIC CARBONATES OF THE YU1 PRODUCING HORIZON OF THE VERKH-TARSKOYE OIL FIELD (SOUTH OF WESTERN SIBERIA)

2020 ◽  
pp. 20-28
Author(s):  
L. G. Vakulenko ◽  
◽  
O. D. Nikolenko ◽  
D. A. Novikov ◽  
P. A. Yan ◽  
...  
Keyword(s):  
Isotopic Composition ◽  
Carbonate Rocks ◽  
Western Siberia ◽  
Oil Field ◽  
Third Generation ◽  
The Third ◽  
First Time ◽  
Different Sources ◽  
Sources Of Co2 ◽  
Comprehensive Study

A comprehensive study of the composition of sand and silt deposits of the Yu1 horizon of the Vasyuganskaya Formation upper part of the Verkh-Tarskoye oil field has been carried out. Associations of authigenic minerals have been determined in their cement, among which the calcite is the most widespread. According to petrographic parameters, three generations of calcite have been identified for which detailed isotopicgeochemical and ultramicroscopic studies were carried out for the first time. Wide and multi directional changes in the isotopic composition of carbon and oxygen and in the chemical composition of carbonate minerals were recorded, they indicate significant variations in the conditions of diagenesis and catagenesis, primarily temperature, and different sources of CO2. Significant variations in the isotopic composition of formation waters and its relationship with the isotopic composition of carbonates have been established. Thus, a narrow interval of close δ13C values was revealed, amounting to –10.5 to –9.1 ‰ in the formation waters of group II, and from –10.7 to –9.1 ‰ in calcites of the third generation. The source of CO2 in this system should be considered a carbon dioxide, which is formed in the process of metamorphism of carbonate rocks of the Paleozoic age.

scholarly journals Highlighting the Crude Oil Bioremediation Potential of Marine Fungi Isolated from the Port of Oran (Algeria)

Diversity ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 196 ◽  
Author(s):  
Ahlem Maamar ◽  
Marie-Elisabeth Lucchesi ◽  
Stella Debaets ◽  
Nicolas Nguyen van Long ◽  
Maxence Quemener ◽  
...  
Keyword(s):  
Species Richness ◽  
Carbon Source ◽  
Crude Oil ◽  
Marine Environment ◽  
Marine Fungi ◽  
Oil Pollution ◽  
Fungal Communities ◽  
Contaminated Site ◽  
Fungal Isolates ◽  
Seawater Samples

While over hundreds of terrestrial fungal genera have been shown to play important roles in the biodegradation of hydrocarbons, few studies have so far focused on the fungal bioremediation potential of petroleum in the marine environment. In this study, the culturable fungal communities occurring in the port of Oran in Algeria, considered here as a chronically-contaminated site, have been mainly analyzed in terms of species richness. A collection of 84 filamentous fungi has been established from seawater samples and then the fungi were screened for their ability to utilize and degrade crude oil. A total of 12 isolates were able to utilize crude oil as a unique carbon source, from which 4 were defined as the most promising biodegrading isolates based on a screening test using 2,6-dichlorophenol indophenol as a proxy to highlight their ability to metabolize crude oil. The biosurfactant production capability was also tested and, interestingly, the oil spreading and drop-collapse tests highlighted that the 4 most promising isolates were also those able to produce the highest quantity of biosurfactants. The results generated in this study demonstrate that the most promising fungal isolates, namely Penicillium polonicum AMF16, P. chrysogenum AMF47 and 2 isolates (AMF40 and AMF74) affiliated to P. cyclopium, appear to be interesting candidates for bioremediation of crude oil pollution in the marine environment within the frame of bioaugmentation or biostimulation processes.

scholarly journals The genera Turnera and Piriqueta (Passifloraceae sensu lato) in the state of Pernambuco, Brazil

Rodriguésia ◽  
2019 ◽  
Vol 70 ◽  
Author(s):  
Andréia Zelenski ◽  
Rafael Louzada
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
New Record ◽  
National Park ◽  
The State ◽  
Northeastern Brazil ◽  
Distribution Maps ◽  
Taxonomic Treatment ◽  
Semideciduous Seasonal Forest ◽  
First Time

Abstract A taxonomic treatment of the genera Turnera and Piriqueta in the state of Pernambuco, northeastern Brazil, is presented. Fourteen species of Turnera and six species of Piriqueta were found in the Atlantic Forest and Caatinga, of which nine are endemic to Brazil. Turnera pernambucensis is threatened and restricted to the Atlantic Forest of Pernambuco, while T. joelii is a new record for the state. The species predominate in steppe savanna and semideciduous seasonal forest, but several of them grow naturally in anthropized areas. Catimbau National Park is the locality with the highest species richness. Tristyly is recorded for the first time in Piriqueta guianensis. Identification keys, descriptions, illustrations, distribution maps, and comments about habitat, flowering, fruiting, and morphological relationships are provided.

scholarly journals The longhorn beetles (Coleoptera: Cerambycidae) of National Park «Kremenetski Hory»

2020 ◽  
pp. 129-140
Author(s):  
Iryna Dovganyuk ◽  
Andrew M. Zamoroka
Keyword(s):  
Species Richness ◽  
Quantitative Study ◽  
National Park ◽  
Longhorn Beetles ◽  
Different Types ◽  
First Time

The fauna of the longhorn beetles of ecoregion of Kremenetski Hory and the eponymous National Park was studied very poorly. In the most recent catalogue of Cerambycidae of Western Podillya it was listed only 13 species for the ecoregion. Including other sources, to date, it was known 17 species of the longhorn beetles. In the current study we identified 59 species of the longhorn beetles, 42 of which are reported for the first time for National Park «Kremenetski Hory» and the ecoregion in general. Under our proposed prediction the Cerambycidae species richness should reach 100-120 species. We also presented result of quantitative study of the longhorn beetles within different types of ecosystems of National Park «Kremenetski Hory». We revealed that 10 species are the most abundant on the studied territory.

scholarly journals THE FIRST DATA ON THE MEIOBENTHOS OF LAKE NERO

2020 ◽  
pp. 61-72
Author(s):  
V. Gusakov
Keyword(s):  
Species Richness ◽  
Aquatic Organisms ◽  
Quantitative Structure ◽  
Community Members ◽  
Volga River ◽  
Volga River Basin ◽  
Qualitative And Quantitative ◽  
First Results ◽  
High Species Richness ◽  
First Time

The paper provides the first results of a study of the qualitative and quantitative structure of the community of bottom meiofauna (meiobenthos) in shallow, hypereutrophic Lake Nero (Volga River basin, Yaroslavl region, Russia). In the samples, collected in early September 2017, 106 representatives from 16 systematic groups of aquatic organisms were found. About half of them had not been previously recorded in the lake's fauna. The species composition of Gastrotricha, Nematoda, Tardigrada, Acari, Harpacticoida, and Ostracoda was analyzed in the water body for the first time. It is established that at the end of the vegetation season, the lake's meiobenthos characterizes by relatively high species richness, diversity, and quantitative parameters. The circle of the main (dominant) community members in the studied period was outlined.

scholarly journals Microbialite-like structures in Cladophora sp. (Ulvophyceae) mats from a subtropical Andean basin: ecological implications

2019 ◽  
Vol 67 (1) ◽  
Author(s):  
Hugo R. Fernández ◽  
Ana Lucia Gonzalez Achem ◽  
Marcela Correa ◽  
Virginia H. Albarracín
Keyword(s):  
Organic Pollution ◽  
Biological Factors ◽  
X Ray Diffraction ◽  
Calcite Precipitation ◽  
Annual Cycles ◽  
X Ray ◽  
Naturally Occurring ◽  
Ecological Implications ◽  
First Time ◽  
Solubility Equilibrium

The solubility equilibrium of calcite is influenced by physicochemical, climatic and biological factors. Annual cycles of exceptionally prolonged drought, in conjunction with naturally occurring diffuse organic pollution, generate the unique conditions for the precipitation of lithified carbonate structures (microbialites). The aim of this article is to analyze the possible implications of calcite precipitation produced in mats of Cladophora sp. in an Andean subtropical basin, considering it is the first time this phenomenon is described for the region. We collected samples from selected sites at the Lules River Basin, in four sampling dates between the years 2003 and 2004, within a monitoring work of 15 years. Samples were analyzed using an electron microscope and X-ray diffraction analysis. We found that Gomphonema sp. attached to Cladophora sp. contributes to precipitation of calcite and formation of microbialite like structures, in the studied area. This work presents an initial discussion of the discovery of microbialites-like structures attached to Cladophora sp. mats in a subtropical Andean stream and the environmental conditions that lead to their production, as well as the possible ecological implications of these microbialites.

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