Factors contributing to heavy metal accumulation in sediments and in the intertidal mussel Perna perna in the Gulf of Annaba (Algeria)

Belabed, Bourhane-Eddine; Laffray, Xavier; Dhib, Amel; Fertouna-Belakhal, Mouna; Turki, Souâd; Aleya, Lotfi

doi:10.1016/j.marpolbul.2013.06.004

Cited by 92 publications

(40 citation statements)

References 63 publications

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“…The total number of individuals and the annual somatic produc- tion of D. trunculus were lower at Sidi Salem than at Echatt. This seems to be consistent with the proximity of Sidi Salem to the Seybouse River, the industrial Port of Annaba, and the relatively low hydrodynamic conditions at this site, which may favor the accumulation of pollutants (Abdennour et al, 2000;Djabri et al, 2003;Belabed et al, 2013). Differences in the condition index (CI) of D. trunculus, found to be slightly higher at Sidi Salem than at Echatt, may also be related to oil exposure of clams at Sidi Salem, rather than to variations in individual biomass between the two study sites.…”

Section: Discussionsupporting

confidence: 72%

“…One site was the beach of Sidi Salem (36°50'N -7°47'E) characterized by slow vortices and relatively low hydrodynamic conditions (LCHF, 1976). This site is located to the east of the Seybouse River which carries domestic and agricultural pollutants, such as untreated sewage, fertilizers and pesticides (Abdennour et al, 2000;Djabri et al, 2003;Belabed et al, 2013). In addition, the proximity of Sidi Salem to the Port of Annaba (the second largest industrial port in the country) may contribute to the accumulation of other pollutants, such as sewers and hydrocarbons, in the area (Djabri et al, 2003).…”

Section: Study Areamentioning

confidence: 99%

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Population dynamics and secondary production of Donax trunculus (Mollusca, Bivalvia) in the Gulf of Annaba (Northeast Algeria)

Hafsaoui

Draredja²,

Lasota

et al. 2016

Medit. Mar. Sci.

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The population dynamics and secondary production of the wedge clam Donax trunculus were studied in the Gulf of Annaba (Northeast Algeria) monthly for one year at a site close to the Annaba port and the Seybouse river, affected by industrial and agricultural pollution (Sidi Salem), and at a site more distant from major pollution sources, but exploited by fishery (Echatt). The number of individuals (N) was lower at Sidi Salem (36–148 ind m-2) than at Echatt (63–272 ind m-2) in most sampling dates, while the biomass was more variable from one date to another, with no consistent pattern of differences between sites. The condition index (CI), although slightly higher at Sidi Salem than at Echatt, showed at both sites a major increase in March/April, June/July and October, reflecting two main periods of gonads development and increase in the level of stored reserves at the end of the reproductive period. Consistently, the recruitment of D. trunculus ran from April to October with a major peak of abundance in spring and a minor one in early fall. The maximum age of D. trunculus was 3 years and the growth rate was highest in the first year. Annual somatic production (P) was lower at Sidi Salem (0.773 g AFDM m-2 yr-1) than at Echatt (1.262 g AFDM m-2 yr-1), possibly reflecting a lower mean annual biomass at Sidi Salem (1.642 AFDM m-2) than at Echatt (3.046 AFDM m-2), while the annual P/B ratio was similar between the two sites (i.e. 0.471 and 0.414 yr-1, respectively). Lower N and P at Sidi Salem compared to Echatt are consistent with the proximity of Sidi Salem to the industrial port of Annaba and low hydrodynamic conditions which may favor the accumulation of pollutants, such as hydrocarbons. On the other hand, moderate secondary production of D. trunculus at Echatt compared to other Mediterranean sites may be due to excessive harvesting. We suggest that the low secondary production described in this study should be taken into account for the development of sustainable strategies of clam exploitation in the Gulf of Annaba. In particular, effort should be made to reduce land-based pollution and to regulate the collection of D. trunculus according to the life cycle and production potential of this species.

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Section: Discussionsupporting

confidence: 72%

Section: Study Areamentioning

confidence: 99%

Population dynamics and secondary production of Donax trunculus (Mollusca, Bivalvia) in the Gulf of Annaba (Northeast Algeria)

Hafsaoui

Draredja²,

Lasota

et al. 2016

Medit. Mar. Sci.

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“…This has led to a decline in species diversity and negative consequences for human health (Salomidi et al, 2012;Belabed et al, 2013). The presence of Trace Elements (TE) in marine ecosystems is growing.…”

Section: Introductionmentioning

confidence: 99%

Spatial variations in trace element concentrations of the sea urchin, Paracentrotus lividus, a first reference study in the Mediterranean Sea

Ternengo

Marengo

Idrissi

et al. 2018

Marine Pollution Bulletin

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“…Due to human activities generating excess organic matter and heavy metals, the organisms inhabiting these environments must tolerate high levels of polluting loads (Belabed et al 2013;Zaaboub et al 2014a). In Tunisia, one of the regions most affected by anthropogenic pressure is the Gulf of Tunis located in the northeastern part of the country and whose coastal area has deteriorated due not only to its sediment budget and shoreline retreat (Brahim et al 2015), but also to heavy metals discharged into the gulf via the Mejerda River and the neighboring river systems of the Ghar El Melh Lagoon, the Ariana Sabkha (sabkha in Arabic designates a coastal and inland saline mud flat built up in shallow depressions through deposition of silt, clay and sand) and the Khlij Channel (Essoni 1998;Zaaboub et al 2014b).…”

Section: Introductionmentioning

confidence: 99%

Diagenetic processes and sediment–water exchanges of heavy metals in the Mejerda River Delta (Gulf of Tunis)

Hellali

Zaaboub²,

Oueslati³

et al. 2015

Environ Earth Sci

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An in situ benthic flux study of iron (Fe), manganese (Mn), lead (Pb), zinc (Zn), cadmium (Cd), copper (Cu) and cobalt (Co) was conducted at three stations at the Mejerda River outlet in the Gulf of Tunis, at depths of 10, 20 and 40 m in March and August 2012. Simultaneously, three sedimentary cores were taken at the same locations to evaluate the diffusive flux of these heavy metals and to determine the early diagenetic mechanisms occurring below the sediment-water interface and their impact on heavy metal mobility. The concentrations of Fe 2? in pore waters were similar to those observed in the rest of the Gulf of Tunis; flux, both benthic (275 lmol m -2 day -1 ) and diffusive (9 lmol m -2 day -1 ), confirmed that sediment was a source of Fe 2? for the water column, at least for the 10-and 20-m stations. The diffusive flux of Mn 2? was greater in August (11-14 lmol m -2 day -1 ) than in March (1-2.6 lmol m -2 day -1 ), representing 8-15 % of benthic flux and indicating that, as for Fe, sediment is a source of Mn 2? for the water column, especially in August. Mn 2? is produced before Fe 2? , which corresponds to the overall pattern of early diagenesis. In March, the production of Mn 2? and Fe 2? takes place in the lower layers of the sediment, probably due to agitation and resuspension occurring at the sediment-water interface. The concentrations of Pb 2? and Zn 2? were higher in this study with reference to the corresponding concentrations in the coastal areas, revealing an anthropogenic activity on the Mejerda River, Ghar El Melh Lagoon (old Mejerda outlet) and the Khlij Channel as the main vectors.

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Factors contributing to heavy metal accumulation in sediments and in the intertidal mussel Perna perna in the Gulf of Annaba (Algeria)

Cited by 92 publications

References 63 publications

Population dynamics and secondary production of Donax trunculus (Mollusca, Bivalvia) in the Gulf of Annaba (Northeast Algeria)

Population dynamics and secondary production of Donax trunculus (Mollusca, Bivalvia) in the Gulf of Annaba (Northeast Algeria)

Spatial variations in trace element concentrations of the sea urchin, Paracentrotus lividus, a first reference study in the Mediterranean Sea

Diagenetic processes and sediment–water exchanges of heavy metals in the Mejerda River Delta (Gulf of Tunis)

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