An assessment of water quality in a coastal embayment (Phaleron Bay, Greece)

Athens basin drains by gravity to the coast into the Phaleron Bay by the Kifissos river. The Phaleron coast is currently undergoing extensive remodelling and is scheduled for development as a major amenity and recreational centre. Thus, an assessment of the Phaleron Bay's present water quality constitutes a prerequisite for the future environmental management of its waters. Analysis of oceanographic data, collected during 1989–1990, showed that eutrophic conditions prevail in the vicinity of Kifissos river, where nutrients and chlorophyll-a occur in high concentrations. Also in this area, the benthic communities have been modified and they are dominated by detritus or sediment feeding polychaetes. However, beyond this region the impact of the river discharge diminishes with distance offshore and in the entrance of the bay, both water column quality and benthos are indistinguishable from those of the open Saronikos Gulf.

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Spatial Variation of Water Chemistry in Aries River Catchment Western Romania

Applied Sciences ◽

10.3390/app11146592 ◽

2021 ◽

Vol 11 (14) ◽

pp. 6592

Author(s):

Ana Moldovan ◽

Maria-Alexandra Hoaghia ◽

Anamaria Iulia Török ◽

Marius Roman ◽

Ionut Cornel Mirea ◽

...

Keyword(s):

Heavy Metals ◽

Water Quality ◽

Water Chemistry ◽

Water Samples ◽

Mine Drainage ◽

Pollution Indices ◽

Mining Activities ◽

River Catchment ◽

High Concentrations ◽

The Impact

This study aims to investigate the quality and vulnerability of surface water (Aries River catchment) in order to identify the impact of past mining activities. For this purpose, the pollution and water quality indices, Piper and Durov plots, as well vulnerability modeling maps were used. The obtained results indicate that the water samples were contaminated with As, Fe, Mn, Pb and have relatively high concentrations of SO42−, HCO3−, TDS, Ca, K, Mg and high values for the electrical conductivity. Possible sources of the high content of chemicals could be the natural processes or the inputs of the mine drainage. Generally, according to the pollution indices, which were correlated to high concentrations of heavy metals, especially with Pb, Fe and Mn, the water samples were characterized by heavy metals pollution. The water quality index classified the studied water samples into five different classes of quality, namely: unsuitable for drinking, poor, medium, good and excellent quality. Similarly, medium, high and very high vulnerability classes were observed. The Durov and Piper plots classified the waters into Mg-HCO3− and Ca-Cl− types. The past and present mining activities clearly change the water chemistry and alter the quality of the Aries River, with the water requiring specific treatments before use.

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Effect of Maritime Traffic on Water Quality Parameters in Santa Marta, Colombia

Journal of Marine Science and Engineering ◽

10.3390/jmse9050474 ◽

2021 ◽

Vol 9 (5) ◽

pp. 474

Author(s):

René Rodríguez-Grimón ◽

Nestor Hernando Campos ◽

Ítalo Braga Castro

Keyword(s):

Water Quality ◽

Petroleum Hydrocarbons ◽

Quality Parameters ◽

Water Quality Parameters ◽

Maritime Traffic ◽

Natural Park ◽

High Concentrations ◽

The Impact ◽

The Relationship ◽

Multiple Chemical

Since 2013, there has been an increase (>23%) in naval traffic using maritime routes and ports on the coastal fringe of Santa Marta, Colombia. Of major concern, and described by several studies, is the relationship between maritime traffic and coastal contamination. This study proposed a maritime traffic indicator considering the simultaneous effects of several relevant measurements of water quality parameters to estimate the impact of naval activity. The approach involved developing a model including the number of vessels, hull length, and permanence time in berths. In addition, water quality variables, considering climatic seasons, were used to verify association with maritime traffic and touristic activities. The high concentrations of total coliforms (TC) and dissolved/dispersed petroleum hydrocarbons in chrysene equivalents (DDPH) reported by the International Marina of Santa Marta (SM) were affected by the local anthropic activities, including tourism, naval traffic, and urban wastewater discharges. Moreover, our results suggest the occurrence of multiple chemical impacts within Tayrona National Natural Park (PNNT) affecting conservation goals. The estimation of the maritime traffic indicator proposed in this study may be an easy and more complete tool for future studies evaluating the impact of naval activities on environmental quality.

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Impacts of Leachate Percolation on Ground Water Quality: A Case Study of Dhanbad City

Global NEST Journal ◽

10.30955/gnj.001377 ◽

2015 ◽

Vol 17 (1) ◽

pp. 162-174 ◽

Cited By ~ 10

Keyword(s):

Water Quality ◽

Ground Water ◽

Oxygen Demand ◽

Quality Analysis ◽

Solid Waste Disposal ◽

Ground Water Quality ◽

Potential Health ◽

Groundwater Samples ◽

High Concentrations ◽

The Impact

<div> This paper presents an assessment of the impact of uncontrolled and unscientific disposal of MSW on ground water in Dhanbad city, India. In this study, ground water quality around municipal solid waste disposal sites was investigated. Ground water quality analysis was carried out on samples collected at various distances from two disposal sites. The study has revealed that the ground water quality near dumping sites does not conform to the drinking water quality standards as per IS:10500. The impacts of indiscriminate dumping activity on ground water appeared most clearly as high concentrations of total dissolved solids, electrical conductivity, chlorides, chemical oxygen demand, and sulphates. High amount of metals like Na, K, Ca, Mg, Cd, Cu, Ni, Fe, Zn and Mn has also been detected in the groundwater samples near dumping area. Leachate characterization study also reveals high potential for groundwater contamination. Presence of feacal coliform contamination in groundwater samples indicates potential health risk for individuals exposed to this water.  </div>

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Retraction: Jelic-Mrcelic G, Sliskovic M. The evaluation of fish farming impact by nutrient content and chlorophyll a in Mala Lamljana bay. Arch biol sci. 2013;65(2):567-70. DOI: 10.2298/ABS1302567J

Archives of Biological Sciences ◽

10.2298/abs150707083e ◽

2015 ◽

Vol 67 (4) ◽

pp. 1437-1437

Author(s):

E Editorial

Keyword(s):

Biological Sciences ◽

Water Quality ◽

Chlorophyll A ◽

Fish Farming ◽

Nutrient Content ◽

Fish Farm ◽

Significant Part ◽

Retracted Article ◽

The Impact ◽

Font Color

This is a notice of retraction of the article: The evaluation of fish farming impact by nutrient content and chlorophyll A in Mala Lamljana bay, published in the Archives of Biological Sciences in 2013, Vol. 65, Issue 3. The Editor-in-Chief has been informed that the data in this article has already been published in the following article: Jelic Mrcelic G, Sliskovic M. The impact of fish cages on water quality in one fish farm in Croatia. Int Sci Index. 2010;4(8):775-8. Inspection of these articles has revealed the following: a significant part of the data in the article published in the Archives of Biological Sciences was published without proper cross-referencing to the data already published in the earlier paper. This issue was discussed with one of the two authors and it was mutually agreed to retract the article. Link to the retracted article <a href="http://dx.doi.org/10.2298/ABS1302567J">10.2298/ABS1302567J</a>

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OIL POLLUTION STUDIES ON LAKE MARACAIBO. VENEZUELA

International Oil Spill Conference Proceedings ◽

10.7901/2169-3358-1975-1-489 ◽

1975 ◽

Vol 1975 (1) ◽

pp. 489-496 ◽

Cited By ~ 2

Author(s):

W.L. Templeton ◽

E.A. Sutton ◽

R.M. Bean ◽

R.C. Arnett ◽

J.W. Blaylock ◽

...

Keyword(s):

Water Quality ◽

Lake Water ◽

Oil Pollution ◽

Surface Films ◽

Fishery Resources ◽

Lake Maracaibo ◽

Commercial Species ◽

Potential Impact ◽

High Concentrations ◽

The Impact

ABSTRACT The results of a 2-year study on the impact of oil discharges on the fishery resources of Lake Maracaibo, Venezuela, are presented. The lake system is described, together with relevant water quality, hydrographic, ecological, and fishery resources data. Sources of other types of pollution, domestic and industrial, are described, and their potential impact on the system are discussed. Analysis of environmental samples-water, sediments, and biota-showed low concentrations of oil in lake water and no detectable accumulation of petroleum-derived hydrocarbons in muscle tissue of selected commercial species. The occurrence of bituminous materials in the sediments, particularly in the oil production area, suggests that the natural processes of volatilization, biodegradation, and sedimentation are the major mechanisms for the removal of oil from the surface waters. Laboratory studies on the toxicity of oil indicate that relatively high concentrations of oil are required to cause mortality. Extraction of oil with lake water, however, indicated that concentrations of total light aromatic fractions were toxic in the parts per million range. The rapid loss, in a few hours, of light hydrocarbons from surface films of oil to the atmosphere was shown to reduce the toxicity to organisms significantly. Examination of the limited fisheries data available does not suggest that the resources are being depleted. However, consideration of the potential impact of nonpetroleum wastes indicates that they are contributing to the degradation of the water quality which, if unchecked, may subsequently reduce the biological resources of the lake.

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Impacts of Agrochemicals on Water Quality Parameters in Aboisso Region (South-East of Cote d’Ivoire)

Current Journal of Applied Science and Technology ◽

10.9734/cjast/2020/v39i4631167 ◽

2020 ◽

pp. 1-19

Author(s):

Assouman Amadou ◽

Kpan Oulai Jean- Gautier ◽

Gnamba Franck Maxime ◽

Oga Yéï Marie Solange ◽

Biémi Jean

Keyword(s):

Water Quality ◽

Surface Water ◽

Physicochemical Analysis ◽

Quality Parameters ◽

Human Consumption ◽

Quality Of Water ◽

Lambda Cyhalothrin ◽

High Concentrations ◽

Guide Values ◽

The Impact

Aboisso region is experiencing unprecedented agricultural activities. Cultural techniques such as the use of insecticides are harming the quality of water. This study aims to assess the impact of insecticides on the water quality in the Aboisso region. Thirty-one (31) water points (10 surface water and 21 groundwater) were sampled. The determination of physicochemical parameters as well as the multi-residue method used for insecticides analysis in the samples allowed us to achieve our objective. The result of the physicochemical analysis shows that the temperature of groundwater (27.91°C) is higher than surface water temperature (26.77°C). These waters are mostly acidic with a slightly lower pH for groundwater (6.46) compared to surface water (6.54). The conductivity is higher in groundwater (average of 130.46 µS/cm) as opposed to surface water (average of 43.50 µS/cm). After applying the multi-residue method, the results reveal the presence of nine (9) active ingredients. In surface waters, all these molecules, except Lambda-cyhalothrin and Deltamethrin, exceed the WHO guide values (0.1 µg/L). The highest concentrations recorded concern ethyl parathion and profenofos (8.24 µg/L and 8.04 µg/L respectively). In groundwater, it is rather Parathion-methyl, Profenofos, Dimethoate, Chlorpyriphos-ethyl, Lambda-cyhalothrin and Deltamethrin that are often at below WHO standards. However, the present study reveals that all of the water samples analysed were polluted, owing to anthropogenic used of insecticides in the region, and other chemicals with high concentrations of parathion-ethyl: 8.24 µg/L and profenofos: 8.04 µg/L. These waters are therefore unfit for human consumption.

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The The impact of Cirebon coal-fired power plants on water quality in Mundu Bay, Cirebon Regency

Sustinere Journal of Environment and Sustainability ◽

10.22515/sustinere.jes.v4i3.114 ◽

2020 ◽

Vol 4 (3) ◽

pp. 189-204

Author(s):

Millary Agung Widiawaty ◽

Nurhanifah Nurhanifah ◽

Arif Ismail ◽

Moh. Dede

Keyword(s):

Water Quality ◽

Power Plant ◽

Chlorophyll A ◽

Power Plants ◽

Field Measurements ◽

Landsat 8 ◽

Marine Biota ◽

Coastal Morphology ◽

The Impact

The presence of Cirebon coal-fired power plant I and II caused negative effects to coastal morphology and the quality of marine waters. This also have negative impacts to the fisherman around that sea. This study aims to examine the impact of the Cirebon coal-fired power plant on the water quality of Mundu Bay, Cirebon Regency. Water quality is determined based on total suspended solids (TSS), sea surface temperatures (SST), chlorophyll-A, and salinity in the range 1999 – 2019. Data collection was carried out using satellite imagery of Landsat-5 TM, Landsat- 7 ETM+, and Landsat-8 OLI verified with in-situ field measurements, Sentinel-2 A MSI, and MODIS Aqua imageries. Changes in water quality due to the infrastructure of the two power plants are known through the Mann-Whitney U-Test and Spearman’s correlation analysis. This research shows that two Cirebon coal-fired power plant has a significant effect on changes in the quality of Mundu Bay waters. Changes in water quality are shown by a significant increase in TSS concentrations and SST values accompanied by a decrease in chlorophyll-A levels and salinity levels. Changes in the quality of these waters also disrupt marine biota habitat and cause fishermen in around are difficult to get the ideal catchment yield.

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LA35 Poultry Fecal Marker Persistence Is Correlated with That of Indicators and Pathogens in Environmental Waters

Applied and Environmental Microbiology ◽

10.1128/aem.00444-15 ◽

2015 ◽

Vol 81 (14) ◽

pp. 4616-4625 ◽

Cited By ~ 13

Author(s):

Bina Nayak ◽

Jennifer Weidhaas ◽

Valerie J. Harwood

Keyword(s):

Water Quality ◽

Health Risk ◽

Water Column ◽

Poultry Litter ◽

Land Application ◽

Gene Marker ◽

Rrna Gene ◽

Content Type ◽

The Impact ◽

Over Time

ABSTRACTDisposal of fecally contaminated poultry litter by land application can deliver pathogens and fecal indicator bacteria (FIB) into receiving waters via runoff. While water quality is regulated by FIB enumeration, FIB testing provides inadequate information about contamination source and health risk. This microbial source tracking (MST) study compared the persistence of theBrevibacteriumsp. strain LA35 16S rRNA gene (marker) for poultry litter with that of pathogens and FIB under outdoor, environmentally relevant conditions in freshwater, marine water, and sediments over 7 days.Salmonella enterica,Campylobacter jejuni,Campylobacter coli,Bacteroidales, and LA35 were enumerated by quantitative PCR (qPCR), andEnterococcusspp. andE. coliwere quantified by culture and qPCR. Unlike the other bacteria,C. jejuniwas not detectable after 48 h. Bacterial levels in the water column consistently declined over time and were highly correlated among species. Survival in sediments ranged from a slow decrease over time to growth, particularly in marine microcosms and forBacteroidales. S. entericaalso grew in marine sediments. Linear decay rates in water (k) ranged from −0.17 day−1for LA35 to −3.12 day−1forC. coli. LA35 levels correlated well with those of other bacteria in the water column but not in sediments. These observations suggest that, particularly in the water column, the fate of LA35 in aquatic environments is similar to that of FIB,C. coli, andSalmonella, supporting the hypothesis that the LA35 marker gene can be a useful tool for evaluating the impact of poultry litter on water quality and human health risk.

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Relationship between the Water Quality Elements of Water Bodies and the Hydrometric Parameters: Case Study in Lithuania

Water ◽

10.3390/w12020500 ◽

2020 ◽

Vol 12 (2) ◽

pp. 500

Author(s):

Laima Česonienė ◽

Daiva Šileikienė ◽

Midona Dapkienė

Keyword(s):

Water Quality ◽

Chlorophyll A ◽

Water Exchange ◽

Ecological Status ◽

Taxonomic Composition ◽

Water Bodies ◽

The Impact ◽

Nitrogen Phosphorus ◽

Fish Index

The larger and deeper lakes and ponds are, the better the conditions for spontaneous water purification, slower hydrobiological processes and slower accumulation of sediment. The goal of this research was to assess the ecological status of selected Lithuanian lentic water bodies and the impact of morphometric indicators on water quality. Multiple studies were conducted on 29 lakes and 10 ponds located throughout Lithuania in 2014–2018. The study proved that higher maxima and average depths of lakes correlate with lower Ptotal, Ntotal yield and macrophyte taxonomic composition values, indicating higher ecological status class. Higher chlorophyll a EQR, ichthyofauna taxonomic composition indicator for Lithuanian fish index LFI and Lithuanian lakes’ macroinvertebrate index indicates a higher ecological class. Larger lake areas contain smaller amounts of Ptotal and Ntotal, indicating better ecological status class; higher ichthyophane taxonomic composition in LFI, zoobenthos taxonomic composition indicator for Lithuanian lakes’ macroinvertebrates index (LLMI) and taxonomic composition of macrophytes MRI indicate better ecological status class. Larger lake areas contain lower chlorophyll a EQR values. Rapid water exchange improves the condition of the lake in addition to nitrogen, phosphorus and chlorophyll a EQR values. The faster the water exchange in the lake is, the lower the Ptotal and Ntotal values; faster water exchange in the lake also means higher chlorophyll a EQR values. However, slower water exchange indicates better ecological status of the macrophytic taxonomic composition of the MRI, the ichthyofauna taxonomic composition and the Lithuanian lakes’ macroinvertebrates index indicator of zoobenthos.

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The relationship between sediment and water quality, and riverine sediment loads in the wave-dominated estuaries of south-west Western Australia

Marine and Freshwater Research ◽

10.1071/mf04044 ◽

2004 ◽

Vol 55 (6) ◽

pp. 581 ◽

Cited By ~ 8

Author(s):

L. C. Radke ◽

I. P. Prosser ◽

M. Robb ◽

B. Brooke ◽

D. Fredericks ◽

...

Keyword(s):

Water Quality ◽

Organic Matter ◽

Soil Erosion ◽

Organic Carbon ◽

Water Column ◽

Nitrogen And Phosphorus ◽

Weathering Index ◽

Sediment Loads ◽

The Impact ◽

Column Total

We examine surface sediment and water column total nutrient and chlorophyll a concentrations for 12 estuaries with average water depths <4 m, and calculated sediment loads ranging from 0.2 to 10.8 kg m−2 year−1. Sediment total nitrogen, phosphorus and organic carbon concentrations vary inversely with sediment loads due to: (i) the influx of more mineral-rich sediment into the estuaries; and (ii) increasing sediment sulfidation. Sediment total organic carbon (TOC) : total sulfur (TS) and TS : Fe(II) ratios correlated to sediment loads because enhanced sedimentation increases burial, hence the importance of sulfate reduction in organic matter degradation. Curvilinear relationships were found between a weathering index and organic matter δ13C in sediment, and sediment load. The rising phase of the curve (increasing weathering, lighter isotopic values) at low to intermediate loads relates to soil erosion, whereas regolith or bedrock erosion probably explains the declining phase of the curve (decreasing weathering, heavier isotopic values) at higher sediment loads. The pattern of change for water column total nutrients (nitrogen and phosphorus) with sediment loads is similar to that of the weathering index. Most water quality problems occur in association with soil erosion, and at sediment loads that are intermediate for the estuaries studied. Limited evidence is presented that flushing can moderate the impact of sediment loads upon the estuaries.

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