Benthic indicators of sediment quality associated with run-of-river reservoirs

Colas, Fanny; Archaimbault, Virginie; Jean-François, Férard; Bouquerel, Jonathan; Marie-Claude, Roger; Devin, Simon

doi:10.1007/s10750-012-1355-y

Cited by 28 publications

(5 citation statements)

References 57 publications

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“…Our results also indicate that streams with 30m riparian zone widths appear to have greater substrate stability than those with wider riparian zones, as indicated by greater abundance of scrapers and filterers versus shredders and gatherers in 30m widths than in wider riparian zones. Greater riparian zone development is linked to lower substrate stability, due to sites with less stable soils and less hard substrates next to the surface, such as embedded rocks, allow for more development of the riparian zone (Fanny et al, 2013;Galeti et al, 2020;Milner & Gloyne-Phillips, 2005). Low level disturbances are an important factor in maintaining the biodiversity in lotic ecosystems, suggesting that wider riparian zones may be better in maintaining the biodiversity in these ecosystems (Death & Winterbourn, 1995;Zimmermann & Death, 2002).…”

Section: Discussionmentioning

confidence: 99%

Do wider riparian zones alter benthic macroinvertebrate assemblages’ diversity and taxonomic composition in neotropical headwater streams?

et al. 2021

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Aim The maintenance and condition of riparian vegetation are important factors for conserving headwater streams and their species diversity. Thus, variations in the width of a riparian zone can have dramatic effects in the structure and functioning of the adjacent freshwater ecosystem. In this study, we aimed to determine if increased riparian zone width changed the benthic assemblages’ structure (diversity, taxonomic and functional composition) in headwater streams. Methods We tested two predictions: (1) increased riparian zone width will change the diversity and taxonomic composition of benthic macroinvertebrate assemblages because narrow riparian zones do not buffer the anthropogenic impacts from the surrounding landscape; (2) wider riparian zones will change benthic macroinvertebrate assemblages’ functional structure, due to changes to energetic input and quality. To test the first prediction, we assessed the benthic macroinvertebrate assemblages’ taxonomic composition, richness and Shannon-Wiener diversity index. To test the second prediction, we assessed functional feeding groups (FFG) and metrics based on their proportion. Results Our results showed that our first prediction was not corroborated, because taxonomic structure and diversity did not show significant variation with increased riparian zone width. Our second prediction was partially corroborated, because there were significant alterations in the functional structure of benthic macroinvertebrate assemblages between the narrowest riparian zone width (30 m) and the others two (50 and 100 m). Conclusions Our results suggest that, contrary to the Brazilian Federal Law 12651/2012, 30-m wide riparian zones are insufficient to protect headwater stream ecosystem functioning.

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Section: Discussionmentioning

confidence: 99%

Do wider riparian zones alter benthic macroinvertebrate assemblages’ diversity and taxonomic composition in neotropical headwater streams?

et al. 2021

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“…Dentro de las posibles consecuencias que podría traer la contaminación por cadmio y plomo del Estero Salado tenemos la afectación a las especies bentónicas, los peces, las plantas y los humanos. En algunos trabajos se ha demostrado que las especies bentónicas se ven afectadas por exponerse a elevadas concentraciones de Cd y Pb (Fanny et al, 2013). Otros estudios han demostrado que el Cd es tóxico para los organismos expuestos a este en los sedimentos (Occhiogrosso, et al, 1979;Traunspurger y Drews, 1996;Ordonez et al, 2011).…”

Section: Discussionunclassified

Determinación de cadmio y plomo en agua, sedimento y organismos bioindicadores en el Estero Salado, Ecuador

et al. 2018

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Existen evidencias de contaminación por metales pesados en el Estero Salado, localizado en la ciudad de Guayaquil, provincia del Guayas, en la costa de Ecuador. Con la finalidad de identificar organismos bioindicadores de contaminación por metales pesados, se estudió la concentración de Cd y Pb en agua, sedimento, hojas de mangles como Rhizophora racemosa, Avicennia germinans, Conocarpus erectus y Laguncularia racemosa, y gasterópodos como Littorina varia y Cerithidea mazatlanica, que se encontraban a nivel del Puente Portete en el Estero Salado. Las muestras fueron analizadas por espectrofotometría de absorción atómica de flama. Los valores de Cd y Pb en agua y sedimento superaron a los límites permisibles establecidos en las normas ecuatoriana y canadiense. Los gasterópodos L. varia y C. mazatlanica demostraron ser los mejores bioindicadores de contaminación al acumular en sus tejidos blandos 2,45±0,49 mg kg-1 de Pb y 1,49±0,67 mg kg-1 de Cd, respectivamente. Los mangles no acumularon en sus hojas Cd y Pb por la baja biodisponibilidad en el sedimento

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“…Metals accumulated in reservoirs can be later released from the bottom sediments to the water column [25][26][27]. Heavy metals in excessive concentrations can have a toxic effect on aquatic organisms [28,29]. They can also be accumulated in tissues of such organisms, e.g., fish, and pose a threat to people consuming them [30][31][32].…”

Section: Of 20mentioning

confidence: 99%

Ecological and Health Risk Assessments of Heavy Metals Contained in Sediments of Polish Dam Reservoirs

Sojka

Ptak

Jaskuła

et al. 2022

IJERPH

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This study aimed at investigating the distribution of heavy metals (HMs: Zn, Pb, Cd, Ni, Cr, and Cu) in the bottom sediments of 28 reservoirs covered area of Poland. The paper evaluates the pollution of sediments with HMs and their potential toxic effects on aquatic organisms and human health on the basis of results provided by the Chief Inspectorate of Environmental Protection in Poland. The average concentrations of HMs in the bottom sediments of the reservoirs were as follows: Cd < Ni < Cr < Cu < Pb < Zn. (0.187, 7.30, 7.74, 10.62, 12.47, and 52.67 mg∙dm−3). The pollution load index values were from 0.05 to 2.45. They indicate contamination of the bottom sediments in seven reservoirs. The contamination-factor values suggest pollution with individual HMs in 19 reservoirs, primarily Cr, Ni, Cu, and Pb. The analysis showed that only two reservoirs had the potential for toxic effects on aquatic organisms due to high concentrations of Cd and Pb. The hazard index values for all the analyzed HMs were less than one. Therefore, there was no non-carcinogenic risk for dredging workers. The reservoirs were divided into two groups in terms of composition and concentration values. Reservoirs with higher concentrations of HMs in bottom sediments are dispersed, suggesting local pollution sources. For the second group of reservoirs, HMs’ concentrations may be determined by regional pollution sources. The analysis showed that Pb, Zn, and Cd concentrations are higher in older reservoirs and those with higher proportions of artificial areas in their catchments. Concentrations of Ni, Cu, and Cr are higher in reservoirs in south Poland and those with higher Schindler’s ratios.

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Benthic indicators of sediment quality associated with run-of-river reservoirs

Cited by 28 publications

References 57 publications

Do wider riparian zones alter benthic macroinvertebrate assemblages’ diversity and taxonomic composition in neotropical headwater streams?

Do wider riparian zones alter benthic macroinvertebrate assemblages’ diversity and taxonomic composition in neotropical headwater streams?

Determinación de cadmio y plomo en agua, sedimento y organismos bioindicadores en el Estero Salado, Ecuador

Ecological and Health Risk Assessments of Heavy Metals Contained in Sediments of Polish Dam Reservoirs

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