scholarly journals Earthworms and Cadmium - heavy metal resistant gut bacteria as indicators for heavy metal pollution in soils?

2018 ◽  
Author(s):  
Maja Šrut ◽  
Sebastian Menke ◽  
Martina Höckner ◽  
Simone Sommer
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Gut Microbiota ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Soil Resources ◽  
Biomarkers Of Exposure ◽  
Earthworm Gut ◽  
Heavy Metal Resistant ◽  
The Impact

AbstractPreservation of the soil resources stability is of paramount importance for the ecosystem, particularly in the current era of environmental change, which presents a severe pollution burden (e.g. by heavy metals) to soil ecosystems and its fauna. Gut microbiomes are becoming recognized as important players in organism health, with comprehension of their perturbations in the polluted environment offering new insights into the nature and extent of heavy metal effects on the health of soil biota. Our aim was therefore to evaluate the effect of environmentally relevant heavy metal concentrations of cadmium (Cd) on the earthworm gut microbiota. Cd exposure led to perturbations of several heavy metal resistant taxa as well as taxa able to bind heavy metals, revealing the potential of the earthworm-microbiota system in overcoming humancaused heavy metal pollution. An ‘indicator species analysis’ linked bacterial generaPaenibacillusandFlavobacterium, and members of the order Actinomycetales with Cd treatment, suggesting the possible use of these bacterial taxa as biomarkers of exposure for Cd stressed soils. The results of this study will be essential to understanding of the soil fauna health, under anthropogenic disturbance, and will have implications for environmental monitoring and protection of soil resources.ImportanceSoil heavy metal pollution presents a severe burden for soil invertebrates and can have impact on their health, which in turn reflects on the health of the entire ecosystem. Gut microbiome is recognized as a central driver of the host health and its shifts can have severe consequences for the host. In this study we investigated the impact of cadmium (Cd) on earthworm gut microbiota, in a controlled experiment using cutting edge next generation sequencing and state of the art bioinformatics tools. The significance of this study is in identifying the gut bacterial taxa which are indicators for Cd treatment and are potential biomarkers of exposure to Cd. Therefore, this study contributes to develop efficient measures to qualify environmental pollution and to protect fragile soil resources and ultimately human health.

Effects of Livestock Farms on Heavy Metal Pollution in Farmland Soils

2014 ◽  
Vol 955-959 ◽  
pp. 1210-1215 ◽  
Author(s):  
Lian Sheng Du ◽  
Yang Wang ◽  
Ji Hong Wang ◽  
Qiang Liu ◽  
Jing Jing Zhang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Cattle Farm ◽  
Farmland Soils ◽  
Pig Farm ◽  
Chicken Farm ◽  
Livestock Farms ◽  
The Impact

The farmland soils around three typical livestock farms in Jilin province were studied to elucidate the impact of farms on heavy metal pollution in surrounding farmland soils. The results showed that the average content of Cd was maximal in the soils around cattle farm (0.29 mg kg-1); the average value of Pb was highest in the soils around the pig farm; and Cu, Zn, Ni and Cr were all highest in the soils around the chicken farm. The distribution of heavy metals in the soils around different livestock farms varied greatly. The contents of Cu, Zn, Ni and Cr decreased in the same order: chicken farm> pig farm > cattle farm, but Pb was pig farm> chicken farm> cattle farm, and Cd was cattle farm> pig farm> chicken farm. These results indicated that the livestock farms did not cause significant heavy metal pollution in its surrounding agricultural soils, but the accumulation of heavy metals caused by farms should arouse the attention.

scholarly journals Kandungan Logam (Pb) pada Strombus canarium Linnaeus,1758 (Mollusca :Gastropoda) di Perairan Malang Rapat dan Tanjung Siambang Provinsi Kepulauan Riau

2020 ◽  
Vol 23 (3) ◽  
pp. 299-304
Author(s):  
Andi Bakia Askara ◽  
Fadhliyah Idris ◽  
Risandi Dwirama Putra ◽  
Aditya Hikmat Nugraha
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Inductively Coupled Plasma ◽  
The Body ◽  
Marine Biota ◽  
Purposive Sampling ◽  
Inductively Coupled ◽  
The Impact

Human activities in coastal areas have the potential to cause heavy metal pollution. The impact of heavy metal pollution causes the accumulation of heavy metals in the body of marine biota, including the Gonggong Snail (S. Canarium). This study aims to analyze the concentration of heavy metals Pb in Gonggong snails in two different characteristics of aquatic ecosystems. Purposive sampling used as a sampling method of Gonggong Snail. The Analysis of heavy metal concentrations from Pb using the ICP (Inductively coupled plasma). The results showed the heavy metal concentration of Pb was 0.427 mg/kg for Malang Rapat Village and 0.71 mg/kg for Tanjung Siambang village. The difference between the two locations possibly due to differences in the aquatic characteristics at the study site. Aktivitas manusia di kawasan pesisir berpotensi menyebabkan terjadinya pencemaran logam berat. Dampak dari pencemaran logam berat dapat menyebabkan terakumulasinya logam berat pada tubuh biota laut, salah satunya yaitu Siput Gonggong (S.Canarium). Penelitian ini bertujuan untuk menganalisis konsentrasi logam berat Pb pada Siput Gonggong yang terdapat pada dua ekosistem perairan yang memiliki karakteristik perairan berbeda. Pengambilan sampel siput gonggong dilakukan dengan cara purposive sampling. Analisis konsentrasi logam berat menggunakan bantuan alat ICP (Inductively coupled plasma). Hasil penelitian menunjukkan bahwa konsentrasi logam berat Pb sebesar 0,427 mg/kg untuk Desa Malang Rapat dan 0,71 mg/kg untuk desa Tanjung Siambang. Terjadi perbedaan antara kedua lokasi kemungkinan dikarnakan adanya perbedaan karakteristik perairan pada lokasi penelitian.

scholarly journals Impact of Artana mine on heavy metal pollution of the Marec river in Kosovo

2021 ◽  
Vol 15 (2) ◽  
pp. 18-24
Author(s):  
Milaim Sadiku ◽  
Sadija Kadriu ◽  
Mensur Kelmendi ◽  
Letafete Latifi
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Water Samples ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Complex Analysis ◽  
Analytical Techniques ◽  
Industrial Complex ◽  
The Impact

Purpose. This paper aims to reflect the extent of the impact of the Artana mine on heavy metal pollution of the waters of the Marec river. Mineralogical pollution of this river resulted in almost total degradation of biota. Methods. To be as realistic as possible in assessing the water quality of the Marec river and of a single spring located in the research area and used for drinking, we have applied the standard methods ISO 5667-6 for surface water and ISO 5667-11 for groundwater. The sampling and the quantity of the samples, as well as their transportation, was done in full compliance with the ISO 5667-1.3 method. Whereas, the conservation of samples taken for the determination of heavy metals is done according to the APHA conservation procedure. For the extraction (mineralization) of heavy metals in the samples taken, the EPA-3015A method was applied, while for the determination of the concentration of heavy metals the SAA (Atomic Absorption Spectrophotometry) measurement technique was applied. Findings. As a result of the industrial activity of the Artana mine, it has been ascertained that the main causes of the pollution of the Marec river waters and the habitat around it is the mineral exploitation activity in this industrial complex. Analysis of water samples discharged from the mine, flotation and drainage of landfills reflect the real state of heavy metals concentration in the Marec river. Originality. In order for the results to realistically reflect the degree of heavy metals concentration in the waters of this river, we have implemented existing and advanced analytical techniques. Practical implications. The water samples from the Marec river were taken and analyzed in January and July 2020. The analysis performed showed significant exceedance of heavy metals concentration in all sampling sites located in the studied industrial area.

scholarly journals Evaluating ecological risks and tracking potential factors influencing heavy metals in sediments in an urban river

2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Dongping Liu ◽  
Jian Wang ◽  
Huibin Yu ◽  
Hongjie Gao ◽  
Weining Xu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Risk Index ◽  
Urban River ◽  
Ecological Risks ◽  
Background Values ◽  
Potential Factors

Abstract Background Heavy metal pollution of aquatic systems is a global issue that has received considerable attention. Canonical correlation analysis (CCA), principal component analysis (PCA), and potential ecological risk index (PERI) have been applied to heavy metal data to trace potential factors, identify regional differences, and evaluate ecological risks. Sediment cores of 200 cm in depth were taken using a drilling platform at 10 sampling sites along the Xihe River, an urban river located in western Shenyang City, China. Then they were divided into 10 layers (20 cm each layer). The concentrations of the As, Cd, Cr, Cu, Hg, Ni, Pb and Zn were measured for each layer. Eight heavy metals, namely Pb, Zn, As, Cd, Cr, Cu, Ni, and Hg, were measured for each layer in this study. Results The average concentrations of the As, Cd, Cu, Hg, and Zn were significantly higher than their background values in soils in the region, and mainly gathered at 0–120 cm in depth in the upstream, 0–60 cm in the midstream, and 0–20 cm downstream. This indicated that these heavy metals were derived from the upstream areas where a large quantity of effluents from the wastewater treatment plants enter the river. Ni, Pb, and Cr were close or slightly higher than their background values. The decreasing order of the average concentration of Cd was upstream > midstream > downstream, so were Cr, Cu, Ni and Zn. The highest concentration of As was midstream, followed by upstream and then downstream, which was different to Cd. The potential factors of heavy metal pollution were Cd, Cu, Hg, Zn, and As, especially Cd and Hg with the high ecological risks. The ecological risk levels of all heavy metals were much higher in the upstream than the midstream and downstream. Conclusions Industrial discharge was the dominant source for eight heavy metals in the surveyed area, and rural domestic sewage has a stronger influence on the Hg pollution than industrial pollutants. These findings indicate that effective management strategies for sewage discharge should be developed to protect the environmental quality of urban rivers.

scholarly journals Assessment of Heavy Metal Pollution Levels in Sediments and of Ecological Risk by Quality Indices, Applying a Case Study: The Lower Danube River, Romania

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1801
Author(s):  
Valentina Andreea Calmuc ◽  
Madalina Calmuc ◽  
Maxim Arseni ◽  
Catalina Maria Topa ◽  
Mihaela Timofti ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Surface Sediments ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Danube River ◽  
Pollution Indices

It is a well–known fact that heavy metal pollution in sediments causes serious problems not only in the Danube basin, but also in the large and small adjacent river streams. A suitable method for assessing the level of heavy metals and their toxicity in sediments is the calculation of pollution indices. The present research aims to assess heavy metal pollution in the Lower Danube surface sediments collected along the Danube course (between 180 and 60 km) up to the point where the Danube River flows into the Danube Delta Biosphere Reserve (a United Nations Educational, Scientific and Cultural Organization – UNESCO, protected area). In addition, this monitored area is one of the largest European hydrographic basins. Five heavy metals (Cd, Ni, Zn, Pb, Cu) were analyzed in two different seasons, i.e., the autumn of 2018 and the spring of 2019, using the Inductively Coupled Plasma Mass Spectrometry (ICP– MS) technique. Our assessment of heavy metal pollution revealed two correlated aspects: 1. a determination of the potential risks of heavy metals in sediments by calculating the Potential Ecological Risk Index (RI), and 2. an evaluation of the influence of anthropogenic activities on the level of heavy metal contamination in the surface sediments, using three specific pollution indices, namely, the Geo–Accumulation Index (Igeo), the Contamination Factor (CF), and the Pollution Load Index (PLI). The results of this pioneering research activity in the region highlighted the presence of moderate metal (Ni and Cd) pollution and a low potential ecological risk for the aquatic environment.

Opportunities for Biotesting of the Water Environment for Heavy Metal Pollution Using a Plant Spirodela polyrhiza (L.) Schleid

2021 ◽  
Vol 25 (5) ◽  
pp. 52-57
Author(s):  
S.I. Alekseeva ◽  
Zh.M. Okhlopkova
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Growth And Development ◽  
Water Environment ◽  
Biological Testing ◽  
Spirodela Polyrhiza ◽  
Model Object ◽  
Chlorophyll A And B

The methods of biotesting of the aquatic environment based on the representative of the duckweed family (lat. Lemnaceae) greater duckweed (Spirodela polyrhiza (L.) Schleid) were considered. A review is presented on the use of greater duckweed as a model object in biological testing, in partic-ular, when exposed to heavy metals salts. When cultivated Spirodela polyrhiza with the addition of heavy metals salts, a change in the growth and development of plants in the experienced line of plants was revealed, as well as a decrease in the content of chlorophyll a and b.

Lightweight aggregates to reduce heavy metal pollution in green infrastructure for urban stormwater management

2021 ◽  
Author(s):  
Concepcion Pla ◽  
Javier Valdes-Abellan ◽  
Miguel Angel Pardo ◽  
Maria Jose Moya-Llamas ◽  
David Benavente
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Green Infrastructure ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Urban Areas ◽  
Stormwater Management ◽  
Lightweight Aggregates ◽  
Urban Stormwater ◽  
Runoff Water

<p>The impervious nature of urban areas is mostly responsible for urban flooding, runoff water pollution and the interception of groundwater recharge. Green infrastructure and sustainable urban drainage systems combine natural and artificial measures to mitigate the abovementioned problems, improving stormwater management and simultaneously increasing the environmental values of urban areas. The actual rate of urban growth in many urban areas requires the enhancement and optimization of stormwater management infrastructures to integrate the territorial development with the natural processes. Regarding the quality of runoff stormwater, heavy metals are critical for their impact on human health and ecological systems, even more if we consider the cumulative effect that they produce on biota. Thus, innovative stormwater management approaches must consider new solutions to deal with heavy metal pollution problems caused by runoff. In this study, we propose the employment of Arlita<sup>®</sup> and Filtralite<sup>®</sup>, two kind of lightweight aggregates obtained from expanded clays, to remove heavy metal concentration from runoff stormwater. Laboratory experiments were developed to evaluate the removal rate of different heavy metals existent in runoff stormwater. The lightweight aggregates acted as filter materials in column experiments to quantify their removal capacity. In addition, batch tests were also developed to evaluate the exhaustive capacity of the materials. Results from the study confirmed the efficiency of the selected lightweight aggregates to reduce the heavy metals concentration by up to 90% in urban stormwater runoff.</p>

scholarly journals Heavy-metal pollution alters dissolved organic matter released by bloom-forming Microcystis aeruginosa

RSC Advances ◽  
2017 ◽  
Vol 7 (30) ◽  
pp. 18421-18427 ◽  
Author(s):  
Haiming Wu ◽  
Li Lin ◽  
Guangzhu Shen ◽  
Ming Li
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Microcystis Aeruginosa ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Aquatic Ecosystems ◽  
Eutrophic Lakes

The risk of heavy metals to aquatic ecosystems was paid much attention in recent years, however, the knowledge on effects of heavy metals on dissolved organic matter (DOM) released byMicrocystiswas quite poor, especially in eutrophic lakes.

scholarly journals Use of Two Aquatic Snail Species as Bioindicators of Heavy Metals in Tigris River-Baghdad

2020 ◽  
pp. 1589-1592
Author(s):  
Harith Saeed Al-Warid ◽  
Hayder Z Ali ◽  
Ghassan Nissan ◽  
Abbas Haider ◽  
Ahmed Yosef
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Soft Tissues ◽  
Snail Species ◽  
Tigris River ◽  
The Mean ◽  
Mean Concentration ◽  
Bellamya Bengalensis

     Thirty individuals of Bellamya bengalensis and Physella acuta were collected and identified from the Tigris River in Baghdad during the period between October to November 2017. The efficiency of bioaccumulation of the two species as bioindicators for aquatic heavy metal pollution with Cd, Ni, Pb and Cu was investigated. Both snail species had the ability to accumulate heavy metals. The mean of Ni concentration in soft tissues of both snails was 1.53 ppm while the mean concentration of other heavy metals was significantly lower; they reached 0.51 ppm, 0.36 ppm and 0.29 ppm, respectively. While no significant differences between B. bengalensis and  P.acuta were noticed in the ability to accumulate the heavy metals. It is concluded that both snails shared the features of good bioindicators due to their sensitivity to pollution.:

scholarly journals Erkenez Çayı’nda (Kahramanmaraş) Süt Ürünleri, Boya ve Tekstil Fabrikası Atık Sularından Kaynaklanan Ağır Metal Kirliliğinin Belirlenmesi

2019 ◽  
Vol 7 (11) ◽  
pp. 1858
Author(s):  
Özgür Canpolat ◽  
Ece Vanlı
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Milk Products ◽  
Metal Contents ◽  
Considerable Impact ◽  
Textile Factory

Industries, as a source of pollution, have a considerable impact on aquatic ecosystems due to the diversity in the composition of their wastewater. In this study, it is aimed to determine the heavy metal pollution caused by the wastewater of milk products factory, paint factory and textile factory in the Organized Industrial Zone of Kahramanmaraş province. For this purpose, seasonal concentrations of some heavy metals (Fe, Cu, Zn, Cr, Ni, Cd, As and Hg) have been determined in wastewaters of milk products factory, paint factory and textile factory and in the region where these wastewaters discharge in the Erkenez Stream. The seasonal variation of heavy metals in all stations, generally the lowest concentrations of all elements were determined in winter and the highest concentrations were determined in summer. When the heavy metal contents of milk products factory, paint factory and textile factory wastewaters were compared, the highest values were found in textile factory wastewater. When all stations are taken into consideration, according to USEPA and water quality criteria, it is determined that the wastewaters of milk products factory, paint factory and textile factory and the area of the Erkenez Stream, where these wastewaters are discharged, were very dirty in term of heavy metals. When these results are taken into consideration, it is clear that the wastewater of these factories causes serious heavy metal pollution in the Erkenez Stream.

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