The effects of anthropogenic pollution on the Kanev Reservoir (Ukraine) phytoplankton. Comparison of size spectrum patterns

2008 ◽  
Vol 10 (3) ◽  
pp. 240-253
Author(s):  
Y. Kamenir ◽  
T. I. Mikhailyuk ◽  
A. F. Popova ◽  
R. B. Kemp ◽  
Z. Dubinsky
Keyword(s):  
Anthropogenic Pollution ◽  
Size Spectrum

ANTHROPOGENIC POLLUTION OF SOIL WITH COPPER AND THE PHYTOREMEDIATION POTENTIAL OF DIFFERENT AGRICULTURAL CROPS

2015 ◽  
Vol 176 (2) ◽  
pp. 163-176
Author(s):  
S. G. Veliksar ◽  
◽  
S. S. Lisnik ◽  
D. N. Bratco ◽  
S. I. Toma ◽  
...  
Keyword(s):  
Anthropogenic Pollution ◽  
Agricultural Crops

microplastics, numerical modelling, the Baltic Sea, anthropogenic pollution

2017 ◽  
Author(s):  
Andrei Bagaev ◽  
Andrei Bagaev ◽  
Irina Chubarenko ◽  
Irina Chubarenko
Keyword(s):  
Numerical Modelling ◽  
Baltic Sea ◽  
Anthropogenic Pollution ◽  
Anthropogenic Pressure ◽  
Marine Waters ◽  
The Baltic Sea ◽  
Main Factors ◽  
The Baltic ◽  
Semi Empirical ◽  
The Given

An overview of modern approaches to the problem of parametrisation of sources of marine waters microplastics pollution from the coastline is conducted. The estimates of Europe’s plastic production along with mismanaged plastic waste percentage that might be the source of microplastics particles input to marine environment are presented. A semi-empirical for-mulation for the particles source intensity is suggested. It considers the main factors of local anthropogenic pressure for the coastal spot location for the given coordinates. Both ad-vantages and disadvantages of such an approach along with possible ways for improvement are discussed.

ACCUMULATION OF PLASTIC FRAGMENTS AND MICROPLASTICS ON THE BEACHES IN THE SOUTH-EAST BALTIC SEA

2017 ◽  
Author(s):  
Lilia Khatmullina ◽  
Lilia Khatmullina ◽  
Elena Esiukova ◽  
Elena Esiukova
Keyword(s):  
Baltic Sea ◽  
Size Range ◽  
Anthropogenic Pollution ◽  
The South ◽  
The Baltic Sea ◽  
Quantitative Distribution ◽  
Sediment Sampling ◽  
Beach Sediments ◽  
Kaliningrad Region ◽  
The Baltic

The sediment sampling from different areas of the beaches in the south-eastern part of the Baltic Sea (in Kaliningrad region) was executed for the purpose of studying the quantitative and qualitative composition of the microplastics particles (range 0.5-5 mm). Preference is given to those beaches that are exposed to maximum anthropogenic pollution. From June, 2015 to January, 2016, there were 14 expeditions along the coastline of the Baltic Sea (in Kaliningrad region) to collect experimental materials. The majority of samples were collected on the most recent flotsam deposited at “wracklines”, in the supralittoral zone. The primary examination of those samples revealed the presence of abundant microplastic particles of the required size range (0.5-5 mm). Quantitative distribution of microplastics in beach sediments was obtained in milligrams per gram of sediment and milligrams per m2: on average 0.05-2.89 (mg per gram of sediment) and 370-7330 (mg per m2), accordingly.

microplastics, numerical modelling, the Baltic Sea, anthropogenic pollution

2017 ◽  
Author(s):  
Andrei Bagaev ◽  
Andrei Bagaev ◽  
Irina Chubarenko ◽  
Irina Chubarenko
Keyword(s):  
Numerical Modelling ◽  
Baltic Sea ◽  
Anthropogenic Pollution ◽  
Anthropogenic Pressure ◽  
Marine Waters ◽  
The Baltic Sea ◽  
Main Factors ◽  
The Baltic ◽  
Semi Empirical ◽  
The Given

An overview of modern approaches to the problem of parametrisation of sources of marine waters microplastics pollution from the coastline is conducted. The estimates of Europe’s plastic production along with mismanaged plastic waste percentage that might be the source of microplastics particles input to marine environment are presented. A semi-empirical for-mulation for the particles source intensity is suggested. It considers the main factors of local anthropogenic pressure for the coastal spot location for the given coordinates. Both ad-vantages and disadvantages of such an approach along with possible ways for improvement are discussed.

Larval Feeding: Mechanisms, Rates, and Performance in Nature

2018 ◽  
Keyword(s):  
Marine Invertebrates ◽  
Spatial Scales ◽  
Size Spectrum ◽  
Larval Feeding ◽  
Natural Habitats ◽  
Feeding Mechanism ◽  
Temporal And Spatial ◽  
And Performance ◽  
Bioenergetics Models ◽  
Many Particles

Larvae of many marine invertebrates must capture and ingest particulate food in order to develop to metamorphosis. These larvae use only a few physical processes to capture particles, but implement these processes using diverse morphologies and behaviors. Detailed understanding of larval feeding mechanism permits investigators to make predictions about feeding performance, including the size spectrum of particles larvae can capture and the rates at which they can capture them. In nature, larvae are immersed in complex mixtures of edible particles of varying size, density, flavor, and nutritional quality, as well as many particles that are too large to ingest. Concentrations of all of these components vary on fine temporal and spatial scales. Mechanistic models linking larval feeding mechanism to performance can be combined with data on food availability in nature and integrated into broader bioenergetics models to yield increased understanding of the biology of larvae in complex natural habitats.

scholarly journals Classification of Aquifer Vulnerability by Using the DRASTIC Index and Geo-Electrical Techniques

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2144
Author(s):  
Syed Hassan Iqbal Ahmad Shah ◽  
Jianguo Yan ◽  
Israr Ullah ◽  
Bilal Aslam ◽  
Aqil Tariq ◽  
...  
Keyword(s):  
Land Use Planning ◽  
Brackish Water ◽  
Anthropogenic Pollution ◽  
Aquifer Vulnerability ◽  
Drastic Model ◽  
Drastic Index ◽  
Electrical Sounding ◽  
Definition Of ◽  
Treatment Policies

Vulnerability analysis in areas vulnerable to anthropogenic pollution has become a key element of sensible resource management and land use planning. This study is intended to estimate aquifer vulnerability using the DRASTIC model and using the vertical electrical sounding (VES) and electrical conductivity (EC) outcomes. The model allows for the identification of hydrogeological environments within the scope of the research, based on a composite definition of each environment’s main geological, geoelectrical, and hydrogeological factors. The results from the DRASTIC model were divided into four equal intervals, high, medium, low, and very low drastic index values. The SW area and NE area depict drastic index values from medium to very high, making it the most vulnerable zone in the study area, while the NW and SW areas show low to very low drastic index values. In addition, the results from the VES and EC the freshwater aquifer in the NE area and brackish water in the SE area, while the rest of the area falls into the category of brackish water. Overall, it can be concluded that areas having freshwater assemblages are on the verge of becoming contaminated in the future while the rest of the NW and SW areas constitute less vulnerable zones. The validation conducted for DRASTIC and EC shows a nearly positive correlation. Wastewater treatment policies must be developed throughout the studied region to prevent contamination of the remaining groundwater.

scholarly journals Geochemical, Geological and Groundwater Quality Characterization of a Complex Geological Framework: The Case Study of the Coreca Area (Calabria, South Italy)

Geosciences ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 121
Author(s):  
Giovanni Vespasiano ◽  
Francesco Muto ◽  
Carmine Apollaro
Keyword(s):  
Groundwater Quality ◽  
Direct Interaction ◽  
Anthropogenic Pollution ◽  
Major And Trace Elements ◽  
World Health ◽  
Ultramafic Rocks ◽  
General Point ◽  
Limit Values ◽  
South Italy ◽  
Italian Law

Hydrogeochemical characterization and statistical methods were used to investigate the groundwater quality and the origin of constituents (anthropic or natural) in groundwater of the Coreca area (Calabria, South Italy). Coreca is characterized by an articulated geological setting where the three main geological complexes that distinguish the Northern Calabria Peloritan Orogen (CPO) outcrop. This complex asset affects the quality of groundwater mainly exploited for irrigation use. In particular, the presence of ultramafic rocks (e.g., serpentinite and metabasite) promotes the release of harmful elements such as Cr and Ni. In the studied area, two groups of waters were identified: Ca-HCO3 waters strongly controlled by the interaction with Ca-rich phases (e.g., limestone), and Mg-HCO3 waters related to the interaction of meteoric water with the metamorphic units. Statistical elaboration allowed to detect, in the Mg-HCO3 group, a good correlation between Cr and Ni (not observed in Ca waters) and a negative correlation between Cr, Ca and Al, in agreement with direct interaction with ultramafic rocks characterized by low concentrations of CaO and Al2O3. The concentration of major and trace elements has been compared with the Italian law limit values and the drinking water guidelines provided by the World Health Organization (WHO). Only three samples showed Mn and Ni concentration higher than the Italian law threshold. Furthermore, the assessment of groundwater quality was carried out using salinity and metal indexes. The groundwater quality assessment for irrigation allowed to classify the resource as “excellent to good” and “good to permissible”; nevertheless, a salinity problem and a magnesium hazard were found. Lastly, a metal index (MI) calculation revealed values <1 for almost all samples, pointing to good overall quality. Only a few samples showed a value extremely higher than 1, attributable to prolonged interaction with ultramafic rocks and/or localized anthropogenic pollution. From a general point of view, groundwater showed a generally good quality except for limited areas (and limited to the set of constituents analyzed) and a mild exceedance of the maximum salinity thresholds that must be monitored over time. Through a multidisciplinary approach, it was possible to ascertain the main anomalies attributable to the interaction with the hosting rocks and not (with few exceptions) to anthropic processes.

scholarly journals Antibiotic resistance of bacteria isolated from Pagellus erythrinus microplastics and public health

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
P Laganà ◽  
E Fazio ◽  
N Spanò ◽  
M Bonsignore
Keyword(s):  
Antibiotic Resistance ◽  
Petri Dish ◽  
Anthropogenic Pollution ◽  
Normal Structure ◽  
Multidrug Resistant ◽  
Morphological Properties ◽  
Marine Environments ◽  
Pagellus Erythrinus ◽  
Human Therapy ◽  
The Moment

Abstract Microplastics (MPs) are widespread in the aquatic environmental due to anthropogenic pollution and are ingested indifferently by fishes that confuse them with food. In aquatic environment, mechanical stress, UV radiations, chemical and biological actions cause a constant degradation and breakdown of plastic objects into smaller fragments. Mediterranean Sea is characterized by the highest densities of plastics in the world being a closed basin with a complex hydrodynamics. The aim of this work is to evidence the occurrence of microbial adhesions on MPs found in edible Pagellus erythrinus (Linnaeus, 1758) bought in local Sicilian supermarkets and therefore highlight the potential role of microplastics in conveying antibiotic resistance by ingestion of food by humans. The composition and structural-morphological properties of MPs found in the excised gastrointestinal tract (GIT) and gills are identified using different techniques. In particular, microparticles of different nature (plastics, organic components, cellulose-based materials) have been determined following specific Raman signals on a large spectral range (300-3500 cm-1). The Pagellus was dissected, open longitudinally, within a sterile glass Petri dish. The components deemed exogenous to the normal structure of the gills and GIT were collected. Optical microscopy images showed that both the GIT and the gill of Pagellus erythrinus contain MPs of different colors (black, dark blu) and mainly with a fibrous shape. At the moment, microbial assays show the adhesion of Citrobacter and E. coli in some fibers extracted by gills while Vibrio spp was mainly detected in the fibers present in GIT. Bacterial isolates were screened for susceptibility to antibiotics using the Kirby-Bauer test, choosing the molecules most used in human therapy. The results obtained suggest that plastics may contribute to the spread of multiple antibiotic resistance in marine environments underline the relevance of future studies on this topic. Key messages Plastics can serve as vectors for the spread of multiple resistances to antibiotics across marine environments. Further studies on possible vehicles of multidrug-resistant germs carried by food of various kinds are desirable.

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