Environmental and ecological risk assessment of heavy metals in sediments of Nador lagoon, Morocco

Maanan, Mohamed; Saddik, Mohammed; Maanan, Mehdi; Chaibi, Mohamed; Assobhei, Omar; Zourarah, Bendahhou

doi:10.1016/j.ecolind.2014.09.034

Cited by 463 publications

(188 citation statements)

References 25 publications

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“…Natural risk sources include meteorological, marine, biological, geological, and other aspects, for example, natural risk sources can be the earthquakes and other sudden disasters, pests and disease, global climate change, and water crises stemming from artificial activities. Artificial risk sources can include land use changes, haze, and other physical risk sources; heavy metals and other chemical risk sources (Li et al 2008;Maanan et al 2015); and biological risk sources such as invasive species and pathogens introduced through international tourism and trade (Anderson et al 2004). Most scholars define a risk source as one or more chemical, physical, or biological of risk sources that exert an adverse effect on the ecological environment (Xu et al 2012;Ren et al 2013).…”

Section: Risk Sourcementioning

confidence: 99%

A framework designation for the assessment of urban ecological risks

Tang

Wang

et al. 2018

International Journal of Sustainable Development & World Ec

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Urban ecological risks stemming from urbanization are increasing and limiting the capability of China to effectuate sustainable urban development. Therefore, addressing urban ecological risks is an urgent need. Numerous factors are involved in urban ecological risks, including air, water, and soil. Additionally, risk sources and risk receptors are complex and diverse. In this study, urban ecological risks are defined as adverse effects and possibility of impacts on urban ecosystem services resulting from urbanization. Urbanization is recognized as the risk source, and the urban ecosystem is considered the risk receptor. Based on this understanding, the components of urban ecological risks are defined, and the relationships between the components of urban ecological risks are illuminated by establishing an indicator system. Based on previous studies on urban ecological risks, an explicit framework for identification, assessment, and management of urban ecological risks is proposed. For purposes of identification, there are three types of risk sources: population growth, industrial development, and the expansion of built land. Stressors include the accumulation of contaminants, consumption of resources, and occupation of space. Assessment endpoints are divided into provisioning, regulating, cultural, and supporting services. In response to urban ecological risks having multiple stressors and multiple assessment endpoints, we assessed risks both with a single stressor/single endpoint and comprehensive ecological risks. In our framework, the physical or material assessment of ecosystem services is adopted as the core method for the analysis of urban ecological risk, because it is believed that the analysis of urban ecological risk should be based on the physical or material assessment of ecosystem services instead of the value assessment of ecosystem services. The results of the single value assessment of urban ecosystem services will cause the deviation from the purpose of urban ecosystem services assessment. The purpose of urban ecosystem services assessment is to maintain and/or improve the capability of urban ecosystems of providing physical or material services, and further to reduce or avoid the occurrence risks of unsustainable cities. Additionally, a multilevel characterization method was adopted for the results of urban ecological risk assessment. In this study, we established a platform to manage urban ecological risks based on landscape ecology and environmental internet of things technologies, and to effectuate online urban ecological risk identification, assessment, and management via this platform. ARTICLE HISTORY

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Section: Risk Sourcementioning

confidence: 99%

A framework designation for the assessment of urban ecological risks

Tang

Wang

et al. 2018

International Journal of Sustainable Development & World Ec

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“…Potential ecological risk index (RI) was calculated by a commonly used formula, which could be used to assess the ecological risk of heavy metals in soil or sediments [17]. The value of RI can be calculated by a formula as follows:…”

Section: Ecological Risk Assessment Of Coal Gangue-mixed Soilsmentioning

confidence: 99%

S105 Improvement of Heavy Metal Resistant Bacteria on Phytoremediation of Reclaimed Land using Coal Gangue

YU¹,

ZHANG²,

ZHANG³

et al. 2015

JRST

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Pot experiments were conducted to evaluate the effect of a heavy metal resistant bacteria strain Pseudomonas aeruginosa (LB5Z) on phytoremediation of reclaimed land using coal gangue. Two sets of treatments were conducted. Planting Amorpha fruticosa L. was used in one set of experiment, while the other used planting and inoculation with the strain LB5Z at the same time. Both treatments involve four kinds of soils (coal gangue; coal gangue: loess = 1:1; coal gangue: loess = 1:2; and loess). The result showed that Amorpha fruticosa L. was suitable for the remediation of coal ganguepolluted land, and further revealed that inoculation of Pseudomonas aeruginosa was a feasible means for promoting plant growth and improving tolerance of the plant to heavy metals. Particularly, the ratio of coal gangue to loess is recommended as 1:2.

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“…Therefore, monitoring and evaluating heavy metal concentrations in water bodies is a case-specific issue. Although different methodologies are employed for the evaluation of heavy metal concentration in literature (Verma and Gupta, 2015;Maanan et al, 2015;Tiwari et al, 2016), multivariate statistical methods become widely applied tools for these type of studies especially when huge and complex chemical data sets are of concern (Singh et al, 2005;Li et al, 2009;Dong et al, 2015;Varol, 2011). Also, the boxwhisker plot is used to identify basic statistical features of datasets through visual displays (Singh et al, 2005;Devic et al, 2015;Ogwueleka, 2015).…”

Section: Introductionmentioning

confidence: 99%

Determination of Spatiotemporal Variations in Heavy Metal Concentration through Orontes River

Kılıç

Can

2017

Turkish JAF Sci.Tech.

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Water quality in surface waters is an important concern since it directly affects public health. Therefore, to provide adequate quality of water, monitoring studies have been conducted all around the world. In this study, multivariate statistical methods were used to understand the spatial and temporal changes in heavy metal concentration (including As, Cd, Cr, Cu, Fe, Hg, Mn, Pb, Zn) through Orontes River. Monitoring study results belonging to 5 different stations in Orontes River was obtained from State of Hydraulic Works and evaluated according to Box and Whisker plots, two-way PERMONAVA analysis and Mann-Kendall trend test. Results indicated that heavy metal concentrations has been increasing year by year. However, there is no significant spatial change in heavy metal concentration and rather homogenous distribution was observed through Orontes River. On the other hand, Iron (Fe) concentration in river was seasonal depended with no significant trend. Yüzey sularındaki su kalitesi doğrudan halk sağlığını etkilediğinden önemli bir endişe kaynağıdır. Bu sebeple, yeterli kalitede su sağlamak amacıyla, bütün dünyada izleme çalışmaları yürütülmeye başlanmıştır. Bu çalışmada, Asi Nehri boyunca ağır metal konsantrasyonundaki (As, Cd, Cr, Cu, Fe, Hg, Mn, Pb, Zn dâhil) mekânsal ve zamansal değişimleri anlamak için çok değişkenli istatistiksel yöntemler kullanılmıştır. Devlet Su İşleri tarafından Asi Nehri üzerinde izleme çalışması yürütülen 5 farklı istasyondan elde edilen izleme sonuçları Box-Whisker grafikleri, iki yönlü PERMONAVA testi ve MannKendall trend testi kullanılarak değerlendirilmiştir. Sonuçlar nehirdeki ağır metal konsantrasyonunun zamanla arttığını fakat ağır metal değerlerinin istasyonlar arasında önemli ölçüde değişmediğini, daha ziyade homojen bir dağılım gösterdiğini, ortaya koymuştur. Öte yandan, nehirdeki Fe konsantrasyonu belirli bir trend olmaksızın mevsimsellik göstermektedir.

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Environmental and ecological risk assessment of heavy metals in sediments of Nador lagoon, Morocco

Cited by 463 publications

References 25 publications

A framework designation for the assessment of urban ecological risks

A framework designation for the assessment of urban ecological risks

S105 Improvement of Heavy Metal Resistant Bacteria on Phytoremediation of Reclaimed Land using Coal Gangue

Determination of Spatiotemporal Variations in Heavy Metal Concentration through Orontes River

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