Levels of Persistent Organic Pollutants (POPs) in sediments from Lenga estuary, central Chile

Pozo, Karla; Urrutia, Roberto; Mariottini, Michela; Rudolph, Anny; Banguera, Julieth; Pozo, Katerine; Parra, Óscar; Focardi, Silvano

doi:10.1016/j.marpolbul.2013.11.031

Cited by 32 publications

(19 citation statements)

References 19 publications

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“…The rapid sorption of POPs to sediment particles and their long persistence in aquatic sediments make them a practical media to assess contamination of an aquatic ecosystem. Although environmental concentrations are highest near the sources, the presence of contaminants in places distant from primary sources indicates that POPs are persistent in the environment and can be transported at long distances (Pozo et al, 2014). Pollutants from different origins that accumulate in sediments suggest that this matrix is the principal reservoir of environmental contaminants (Birch and Davey, 1995).Many of these compounds are toxic to aquatic life and potentially harmful to humans (Tolosa et al, 2005;Sharma et al, 2014).…”

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confidence: 99%

Distribution of organic contamination of sediments from Ichkeul Lake and Bizerte Lagoon, Tunisia

Salem

Saïd

Mahmoudi

et al. 2017

Marine Pollution Bulletin

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Analyses of organochlorine pesticides (OCPs), polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and butyl tins (BuSn) were conducted on sediments from Ichkeul Lake-Bizerte Lagoon watershed (Tunisia). A total of 59 compounds (16 PAHs, 12 PCBs, 22 OCPs and 9 BuSn) were measured in 40 surface sediment samples collected during two campaigns. High concentrations of total PAHs were identified in the lagoon ranging from 122 to 19600ng·g. Several OCPs, including endrin, dieldrin, and lindane (Hexachlorocyclohexane or HCH or BHC) were found in high concentrations in Ichkeul Lake, ranging from 28 to 2012ngg. PAHs and OCPs varied seasonally, in response to the complex hydrology of the watershed. The concentrations of total PCBs ranged between 0.04 and 10.653ngg and suggests low total PCBs sediment contamination, when compared to most international criteria. Total BuSn concentrations range between 67 and 526ng·g, which are relatively low when compared to most international criteria and ecological risk assessments. This is the first study of organic contamination in Ichkeul Lake (RAMSAR and UNESCO World Heritage site).

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confidence: 99%

Distribution of organic contamination of sediments from Ichkeul Lake and Bizerte Lagoon, Tunisia

Salem

Saïd

Mahmoudi

et al. 2017

Marine Pollution Bulletin

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“…High levels of environmental pollutants detected in Lenga sediments, in many cases with persistent characteristics and above some Sediment Quality Guidelines [2,10,11,[13][14][15], make it possible to classify it as a chronic and heavily polluted estuary. Hg distribution pattern in Lenga sediments ( > head > middle > mouth) suggests that concentrations depend on the distance from the source rather than on sediment's physicochemical characteristics.…”

Section: Discussionmentioning

confidence: 99%

“…It is one of the most industrialised coastal areas of South Eastern Pacific and is historically impacted by mercury, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls and hexachlorobenzene derived from industrial activities around the Lenga estuary. [10,[13][14][15] The long-standing historical events of pollution in Lenga sediments and high persistence of some pollutants, like Hg, in their sediments [10] give an excellent backdrop for understanding the long-term effects of pollution in key estuarine species populations.…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal population and reproductive responses inPerinereis gualpensis(Polychaeta: Nereididae) from estuaries under different anthropogenic influences

Díaz-Jaramillo

Sandoval

Barra

et al. 2015

Chemistry and Ecology

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Reproductive and population-level responses are ecologically relevant diagnostic tools for revealing the cost of long-term tolerance to contaminants. Spatial density distribution, seasonal density, biomass, size frequency histograms and oocytes stages in Perinereis gualpensis (Polychaeta: Nereididae) from a highly anthropogenically impacted estuary (Lenga, south-central Chile) were compared with low-polluted estuaries (Tubul and Raqui). Spatial distribution showed that the highest P. gualpensis abundances occur in the central (middle) estuarine area, establishing them as suitable zones for comparisons of estuaries. Middle areas also showed differences among estuaries in terms of population and reproductive responses. Mature stage oocytes and juvenile recruitment limited to certain seasons and low adult survival led to significant low densities and biomasses in Lenga individuals (p < .05). Conversely, high densities and biomass, continuous recruitment and mature oocyte occurrence were observed in Tubul-Raqui estuaries. These results reflected population and reproductive differences among high-and low-polluted estuaries, suggesting that chronic pollution status in Lenga estuary is a factor to be considered when evaluating these responses.

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“…The highest concentration of PBDEs in the coastal surface sediment reached 1500 ng g -1 at River Clyde Estuary, UK (Vane et al, 2010). The highest PCBs level in sediment reached 13000 ng g -1 at Lenga Estuary, Chile, which is located in a nature sanctuary but influenced by the heavy industrialization and economic development of its adjacent coast (Pozo et al, 2014). And the highest concentration of PFAAs in coastal sea water reached 1240 ng L -1 at the Daling Estuary, China which was contaminated by upstream fluorine chemical parks Zhu et al, 2015).…”

Section: Global Distribution Along the Coastmentioning

confidence: 99%

Major threats of pollution and climate change to global coastal ecosystems and enhanced management for sustainability

Lü¹,

Yuan²

2018

Preprint

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Coastal zone is of great importance in the provision of various valuable ecosystem services. However, it is also sensitive and vulnerable to environmental changes due to high human populations and interactions between the land and ocean. Major threats of pollution from over enrichment of nutrients, increasing metals and persistent organic pollutants (POPs), and climate change have led to severe ecological degradation in the coastal zone, while few studies have focused on the combined impacts of pollution and climate change on the coastal ecosystems at the global level. A global overview of nutrients, metals, POPs, and major environmental changes due to climate change and their impacts on coastal ecosystems was carried out in this study. Coasts of the Eastern Atlantic and Western Pacific were hotspots of concentrations of several pollutants, and mostly affected by warming climate. These hotspots shared the same features of large populations, heavy industry and (semi-) closed sea. Estimation of coastal ocean capital, integrated management of land-ocean interaction in the coastal zone, enhancement of integrated global observation system, and coastal ecosystembased management can play effective roles in promoting sustainable management of coastal marine ecosystems. Enhanced management from the perspective of mitigating pollution and climate change was proposed.

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Levels of Persistent Organic Pollutants (POPs) in sediments from Lenga estuary, central Chile

Cited by 32 publications

References 19 publications

Distribution of organic contamination of sediments from Ichkeul Lake and Bizerte Lagoon, Tunisia

Distribution of organic contamination of sediments from Ichkeul Lake and Bizerte Lagoon, Tunisia

Spatio-temporal population and reproductive responses inPerinereis gualpensis(Polychaeta: Nereididae) from estuaries under different anthropogenic influences

Major threats of pollution and climate change to global coastal ecosystems and enhanced management for sustainability

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