Trace metals in sediments at the lower reaches of Mediterranean coastal rivers, Israel

Herut, Barak; Hornung, Hava; Kress, Nurit; Krom, Michael D.; Shirav, M.

doi:10.2166/wst.1995.0690

Cited by 9 publications

(9 citation statements)

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“…Kishon Harbor is known as an extremely polluted location. High levels of heavy metals and nutrients have been measured and reported, both in the water column as well as in the sediment (Herut et al 1995(Herut et al , 2000.…”

Section: Discussionmentioning

confidence: 99%

Use of fish parasite species richness indices in analyzing anthropogenically impacted coastal marine ecosystems

Dzikowski

Paperna

Diamant

2003

Helgoland Marine Research

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The diversity of fish parasite life history strategies makes these species sensitive bioindicators of aquatic ecosystem health. While monoxenous (singlehost) species may persist in highly perturbed, extreme environments, this is not necessarily true for heteroxenous (multiple-host) species. As many parasites possess complex life cycles and are transmitted through a chain of host species, their dependency on the latter to complete their life cycles renders them sensitive to perturbed environments. In the present study, parasite communities of grey mullet Liza aurata and Liza ramada (Mugilidae) were investigated at two Mediterranean coastal sites in northern Israel: the highly polluted Kishon Harbor (KH) and the relatively unspoiled reference site, Ma'agan Michael (MM). Both are estuarine sites in which grey mullet are one of the most common fish species. The results indicate that fish at the polluted site had significantly less trematode metacercariae than fish at the reference site. Heteroxenous gut helminths were completely absent at the polluted sampling site. Consequently, KH fish displayed lower mean parasite species richness. At the same time, KH fish mean monoxenous parasite richness was higher, although the prevalence of different monoxenous taxa was variable. Copepods had an increased prevalence while monogenean prevalence was significantly reduced at the polluted site. This variability may be attributed to the differential susceptibility of the parasites to the toxicity of different pollutants, their concentration, the exposure time and possible synergistic effects. In this study, we used the cumulative species curve model that extrapolates "true" species richness of a given habitat as a function of increasing sample size. We considered the heteroxenous and monoxenous species separately for each site, and comparison of curves yielded significant results. It is proposed to employ this approach, originally developed for estimating the "true" parasite species richness for a given habitat, in the characterization of communities of differentially impacted coastal marine ecosystems.

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Section: Discussionmentioning

confidence: 99%

Use of fish parasite species richness indices in analyzing anthropogenically impacted coastal marine ecosystems

Dzikowski

Paperna

Diamant

2003

Helgoland Marine Research

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“…Geochemical normalization can compensate for both the granulometric and mineralogical variability of metal concentrations in sediments (Liu et al, 2003). Consequently, in order to assess the possible anthropogenic impact, several authors (Herut et al, 1995; Schiff and Weisberg, 1999;Baptista Neto et al, 2000;Mucha et al, 2003) have successfully used Fe to normalise the trace metal contaminants. In this study, we have also used Fe as a conservative tracer to differentiate natural from anthropogenic components.…”

Section: Methodsmentioning

confidence: 99%

Assessing pollution levels in sediments of a harbour with two opposing entrances. Environmental implications

Guerra-García

Gómez

2005

Journal of Environmental Management

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“…A great deal of attention is usually paid to the equilibrium particulate heavy metal concentration, N ∞ , in experimental research (Jin and Wang 1988;YRWRPRI 1988;Herbert et al 1995;Herut et al 1995;Bird and Evenden 1996). From equation 18 it can be seen that N ∞ is dependent on three factors and they are c 0 /s, b and k/s.…”

Section: General Dissolved Heavy Metal Pollutant Concentrationmentioning

confidence: 99%

Adsorption of Cadmium Ions onto the Yellow River Sediment

Huang

2003

Water Quality Research Journal

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Adsorption of cadmium ions onto Yellow River sediment was studied in a batch reactor. Equilibrium adsorption of cadmium ions onto Yellow River sediment can be well described by the Langmuir adsorption isotherm. In view of common experimental conditions in the batch reactor, a set of equations for describing variations of both the dissolved heavy metal pollutant concentration and the particulate heavy metal pollutant concentrations (the adsorption content of heavy metal pollutant on unit weight of sediment) with time was formulated with the use of an adsorptive reaction kinetic equation of heavy metal pollutant, mass balance equation and corresponding initial conditions. Furthermore, formulae for calculating the equilibrium dissolved heavy metal concentration and the equilibrium particulate heavy metal concentration (the equilibrium adsorption content of heavy metal pollutant on unit weight of sediment) in the batch reactor were obtained. These can be used as tools for further study. It was found that the saturation adsorption content, b, constant of adsorption-desorption rate, k, and coefficient of adsorption rate, k1 (and coefficient of desorption rate k2), in the adsorptive reaction kinetic equation of the Langmuir type are independent of the suspended sediment concentration. Adsorption contents of heavy metal pollutants on unit weight of sediment (the suspended particulate heavy metal concentration) decreases with increasing suspended sediment concentration and can be well explained by the law of mass conservation. Adsorption capacity, which is defined as adsorption content of heavy metal pollutant by unit volume of (muddy) water, increases with an increase in either the suspended sediment concentration or initial dissolved heavy metal concentration.

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Trace metals in sediments at the lower reaches of Mediterranean coastal rivers, Israel

Cited by 9 publications

References 0 publications

Use of fish parasite species richness indices in analyzing anthropogenically impacted coastal marine ecosystems

Use of fish parasite species richness indices in analyzing anthropogenically impacted coastal marine ecosystems

Assessing pollution levels in sediments of a harbour with two opposing entrances. Environmental implications

Adsorption of Cadmium Ions onto the Yellow River Sediment

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