The study included water from the rivers (Nysa Szalona, Bystrzyca, Strzegomka and their tributaries) supplying dam reservoirs. An assessment of contamination with aluminum heavy metals was made using MPI (Metal Pollution Index) index considering hydrochemical parameters. conducted in a 4-year cycle, twice during each year. It found that levels aluminum, other physical chemical parameters were low met environmental criteria limit values for surface waters. highest amounts recorded Nysa...

The presence of honey bee in the environment has a significant impact on global agricultural production.While searching for pollen and nectar, is often exposed to several contaminants such as plant protection products.The aim this study was assess selected pesticides from various groups (fungicides, herbicides, insecticides) way bees harvested food well their behavior, survival rate concentration certain elements organisms bee.The possibly similar applied agriculture recommended by...

Transformation of the river catchment and bed cause significant changes in functioning ecosystems. The main effects anthropogenic transformations are hydrological changes, such as lower current velocity or an increase nutrient content, higher temperature. Zooplankton reacts rapidly to new environmental conditions rivers, increasing its richness abundance. We tried answer two questions: what type use has a greater influence on zooplankton communities how do dam impoundments downstream? study...

The study aimed to analyse the effect of copper nanoparticles similar particle size Cu and CuO ions (CuSO

The muscles of lake trout (Salvelinus namaycush Walbaum, 1792), crucian carp (Carassius carassius Linnaeus, 1758), flounder (Platichthys flesus gilthead seabream (Sparus aurata mackerel (Scomber scombrus 1758) and tench (Tinca tinca were examined. total mercury (THg) was processed using the Milestone DMA-80 fatty acids analyzed 7890A Agilent Technologies chromatograph. THg content in fish ranged from 0.024 (lake trout) to 0.092 mg/kg wet weight (gilthead seabream). examined had lower amounts...

The study was carried out on sediments collected from three rivers: Nysa Szalona, Strzegomka and Bystrzyca flowing in southwestern Poland. content of Al bottom water determined relation to chemical conditions. a four-year cycle, during spring autumn. aim the determine level accumulation aluminum rivers supplying dam reservoirs storing for consumption. studied were mineral nature, with neutral pH moderate sulfate content. heavy metals highest Szalona River lowest River, which also evident...

Fish roe is among important components of human diet, but its elemental composition rather poorly known. In this study we used inductively coupled plasma mass spectrophotometer (ICP-MS) to examine the content As, Cd, Co, Cr, Mn, Mo, Ni, Pb and Se in sturgeon, sea trout rainbow trout. addition, risk assessment for consumer health was conducted by determination estimated daily intake (EDI), target hazard quotient (THQ), index (HI) carcinogenic (CR). Overall, elements formed following sequence...

River damming causes a decrease in water current velocity which leads to an increase richness and abundance of organisms atypical for running waters. Zooplankton is representative example such organisms. The influx zooplankton from carp ponds additional factor that increases rivers. We hypothesized dispersing the colonize impoundments river by development new species, not observed upstream. was collected monthly April September 2013 2014. Sampling sites were located Barycz (in lotic sections...

The reduced zooplankton abundance at the outlet sections of lakes depends on occurrence preying fry. Therefore, light conditions can play a major role in drift along river outlets. aim this study was to determine influence diurnal decline densities lake Photosynthetically active radiation (PAR) levels were measured their effect rate abundance. Cladocerans and copepods showed significantly greater reduction than rotifers nauplii. A significant positive relationship observed between PAR...

Nanotechnology offers manufacturing and use of structures in which at least one dimension is expressed nanometers.An increasing number everyday products contain some ingredients molecules size.One them -Ag-nanoparticles (nanosilver) -is commonly used due to its biocidal properties.There a serious risk nanoparticles being released into the environment, especially soil or surface water.Because low selectivity silver-nanoparticles water it not an environmentally-friendly product (destroying...

The aim of this study was to determine the mercury content and fatty acids profile in roach (Rutilus rutilus L.) European perch (Perca fluviatilis from Lake Łańskie (Poland). Mercury higher muscles than other organs both species (p < 0.05). accumulates along food chain lake’s ecosystem. value bioconcentration factor (BCF) indicated that Hg had accumulated highest amounts as follows: > liver gills gonads. metal pollution index (MPI) target hazard quotient (THQ) were below 1, which means...

Abstract Analysis of the physicochemical properties fresh eggs (raw material for caviar production) Salmonidae [sea trout ( Salmo trutta L. 1758) and rainbow Oncorhynchus mykiss, Walbaum 1792)] acipenseridae [siberian sturgeon Acipenser baeri Brandt, 1869)], as well hybrids 1869 × gueldenstaedti Brandt & Ratzeburg, 1833), included determination basic parameters (pH, dry weight, content protein, fat, fiber ash), amino acid composition fatty profile. Compared to Acipenseridae , yielded a...

Applications of nanotechnologies in different sectors and everyday items are very promising their popularity continues to grow. The number products containing nanoparticles makes environmental exposure inevitable. current understanding the relationships between environment is inadequate despite fast growth nanotechnologies. aim study was investigate influence copper gold on Daphnia pulex survival. Our included 48-hour acute toxicity tests determination median lethal concentration values...

Abstract A laboratory experiment was performed to find out the potential bioaccumulation of metals (Al, Cu, Cd, Ni, Pb, Fe, Mn) in aquatic plants acting as natural biosorbents environment depending on variation water pH. Two were selected for study: branched bur-reed— Sparganium erectum L., a representative emergent plants; and river water-crowfoot— Ranunculus fluitans Wimm., 1841, submergent plants. The relative (BCF W ) determined, metal pollution index (MPI) calculated. content before...

Abstract The study was conducted on the Biała Lądecka River which is a mountain river. It similar to many European rivers in terms of hydromorphology and catchment management. aim this determine bioconcentration factors heavy metals (Pb, Cd, Hg, Ni, Cr, Cu Zn) Ranunculus aquatile (L.) Dumort., Fontinalis antipyretica (L. ex Hedw.), Lemanea fluviatilis C.Ag. content water, sediment, submerged plants determined. metal concentrations can be arranged as follows: Hg < Cd Cr Ni Pb <Zn....

Nanotechnology is a rapidly growing field of science, and an increasing number nanoproducts, including nanometals, can be found on the market. Various nanometals products that are manufactured based them help to fight bacteria fungi, but they also penetrate organisms accumulate in them. This study aimed compare effects two metals, silver (Ag) copper (Cu), with known antibacterial fungicidal properties their ionic (AgNO3, CuSO4·5H2O) nanoparticle (AgNPs, CuNPs) forms rainbow trout eggs fry....

The research involved S3up Dam Reservoir, which is used as a source of drinking water and for flood prevention. material was made up aquatic plants collected in the littoral zone reservoir, copper, nickel, cadmium, lead zinc contents were determined. Ceratophyllum demersum L. turned out to be best accumulator cadmium zinc, Potamogeton crispus – Phragmites communis Trin zinc. presence backwater area dam reservoir definitely improves quality, not only thanks their metal accumulation properties...

This study aimed to determine aluminum levels in reed canary grass Phalaris arundinacea L.) rivers southwestern Poland—Bystrzyca, Strzegomka, and Nysa Szalona, together with their tributaries. The samples were collected spring autumn 2015–2018. highest amounts of recorded the lowest Bystrzyca. During four-year cycle studies, values last year, first year. found all three lowland In main rivers, higher at mouth Szalona Strzegomka reservoirs, while opposite situation was for Higher contents...