Azov roach as an indicator of pollution of the ecosystem of the Sea of Azov

Korablina, I.V.; Kotov, Sergey; Барабашин, Т. О.

doi:10.36038/2307-3497-2019-178-84-103

Cited by 3 publications

(9 citation statements)

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“…The primary efflux was the surface gas evasion (11,932.9 kg/yr), while the discharge in the Black Sea and sediment burial were 369.6 kg/yr and 473.0 kg/yr, respectively. While the water and sediment concentrations underestimated empirically measured offshore concentrations ( Table 1 ), they were comparable to the most recent average concentrations reported by Korablina et al [ 4 ] and Kuznetsov et al [ 5 ], respectively. The computed atmospheric Hg concentration of 6.0 ng/m 3 ( Figure 2 ) matched average concentrations reported for remote areas on the European continent [ 50 ].…”

Section: Resultssupporting

confidence: 88%

“…Due to the spatiotemporal variability in water temperature and wind speeds over the SoA, the precision of this estimation cannot be critically appraised; however, it provides evidence towards significant volatilisation in a large aquatic system.As documented in Table1, Hg concentrations in water and sediment are highly dependent on the sampling year and location. The values provided by Korablina et al[32] denote averages recorded between 1986 and 1992 and 1993 and 2005, respectively, which far exceed more recent concentrations (10 ng/L) reported for 2018 in offshore waters[4]. Using the method by Ethier et al[30], a residence time of 3.2 years for Hg loadings was computed, which underestimates the turnover reported byKorablina et al [4].…”

mentioning

confidence: 81%

“…The Sea of Azov (SoA) is bounded by Ukraine and Russia and represents an important watershed due to its high abundance of fish and connection to the Black Sea [ 3 ]. However, due to the intense industry in the adjacent metropolises, the SoA has been heavily impacted by anthropogenic pollution, including Hg [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…The environmental quality of the SoA has been degraded by anthropogenic activities [ 3 , 31 ]. The anthropogenic input reached its maximum levels in the 1980–1990s, with the reported pollution levels far exceeding the maximum permissible concentrations for fishery reservoirs in the water and sediment of the SoA and its tributaries [ 4 , 5 , 6 , 32 ]. More recent monitoring efforts have revealed a significant decrease in industrial inputs [ 4 , 6 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…The anthropogenic input reached its maximum levels in the 1980–1990s, with the reported pollution levels far exceeding the maximum permissible concentrations for fishery reservoirs in the water and sediment of the SoA and its tributaries [ 4 , 5 , 6 , 32 ]. More recent monitoring efforts have revealed a significant decrease in industrial inputs [ 4 , 6 , 10 ]. However, legacy pollution is expected to be recalcitrant, and chronic low-level pollution has the potential to bioaccumulate through the food web.…”

Section: Introductionmentioning

confidence: 99%

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Mercury Dynamics in the Sea of Azov: Insights from a Mass Balance Model

Gade,

von Hellfeld,

Mbadugha

et al. 2024

Toxics

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The Sea of Azov, an inland shelf sea bounding Ukraine and Russia, experiences the effects of ongoing and legacy pollution. One of the main contaminants of concern is the heavy metal mercury (Hg), which is emitted from the regional coal industry, former Hg refineries, and the historic use of mercury-containing pesticides. The aquatic biome acts both as a major sink and source in this cycle, thus meriting an examination of its environmental fate. This study collated existing Hg data for the SoA and the adjacent region to estimate current Hg influxes and cycling in the ecosystem. The mercury-specific model “Hg Environmental Ratios Multimedia Ecosystem Sources” (HERMES), originally developed for Canadian freshwater lakes, was used to estimate anthropogenic emissions to the sea and regional atmospheric Hg concentrations. The computed water and sediment concentrations (6.8 ng/L and 55.7 ng/g dw, respectively) approximate the reported literature values. The ongoing military conflict will increase environmental pollution in the region, thus further intensifying the existing (legacy) anthropogenic pressures. The results of this study provide a first insight into the environmental Hg cycle of the Sea of Azov ecosystem and underline the need for further emission control and remediation efforts to safeguard environmental quality.

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Section: Resultssupporting

confidence: 88%

mentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mercury Dynamics in the Sea of Azov: Insights from a Mass Balance Model

Gade,

von Hellfeld,

Mbadugha

et al. 2024

Toxics

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Biochemical and hematological parameters of the roach Rutilus rutilus heckelii (Nordmann, 1840) from the Sea of Azov stock in the spring season of 2020–2021

Lisovskaya

Voykina

Sergeeva

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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This work presents the results of the investigation of the physiological state of the roach Rutilus rutilus heckelii breeders from the Sea of Azov stock during the spawning period. It has been established that, in the spring season of 2020 and 2021, the content of proteins and lipids in fish tissues, as well as hematological parameters in all investigated roach specimens from different water bodies were consistent with the average long-term values. The content of proteins in the muscles and liver of roach does not differ by sex. A higher protein content in the gonads of females is characteristic of the pre-spawning period due to the process of gonad maturation. The high content of lipids in the gonads of males apparently results from the lower energy consumption for maturation of the gonads and spawning. The average concentration of sodium and potassium ions decreased in comparison with the values obtained in 2020, while the concentration of chloride anions increased. It has been concluded that the physiological state of all investigated roach specimens was normal.

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Bioaccumulation of Cadmium and Copper in Different Areas of The Eastern Part of The Gulf of Finland

Berezina,

Kamardin,

Sharov

2024

jour

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The Gulf of Finland (with the estuary of the Neva River) is located in the northeastern part of the Baltic Sea and plays a key role in the formation of biological resources and the quality of the natural environment of the entire Baltic Sea. Along with eutrophication, its ecosystem is subject to anthropogenic pollution with toxic elements, including heavy metals. In this work, we analyzed the content of cadmium and copper in bottom sediments of the Gulf of Finland and in the tissues of the dominant species of benthic macrofauna — the deposit-feeder polychaete Marenzelleria arctia and the predatory isopod Saduria entomon. Significant variability was found in the spatial distribution of these elements in both environments. The average concentrations of cadmium (0.67±0.1 mg/kg of dry matter) in bottom sediments were correspondingly two times higher, and copper (34.4±4.0 mg/ kg) 1.5 times lower than the threshold levels established for the Baltic Sea. A significantly higher content of these metals was found in the tissues of isopods than polychaetes; in some locations it is an order of magnitude higher in isopods than in polychaetes. The factor of trophic transfer of metals in the Gulf food web showed biomagnification, i. e. accumulation of metals during the transition from low-level consumers (M. arctia) to predatory consumers (S. entomon), cadmium by 3.7 times and copper by 8.7 times. Thus, both species of benthic animals have high accumulative activity in relation to cadmium and copper, which contributes to the active transport of both metals from bottom sediments to marine biota, and, ultimately, transfer to the higher levels of the food web (fish, birds and mammals).

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Azov roach as an indicator of pollution of the ecosystem of the Sea of Azov

Cited by 3 publications

References 0 publications

Mercury Dynamics in the Sea of Azov: Insights from a Mass Balance Model

Mercury Dynamics in the Sea of Azov: Insights from a Mass Balance Model

Biochemical and hematological parameters of the roach Rutilus rutilus heckelii (Nordmann, 1840) from the Sea of Azov stock in the spring season of 2020–2021

Bioaccumulation of Cadmium and Copper in Different Areas of The Eastern Part of The Gulf of Finland

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