Spatial distribution patterns of metals in the surface sediments of Lake Orta (Italy)

Baudo, Renato; Amantini, L.; Bo, F.; Cenci, R. M.; Hannaert, P.; Lattanzio, A.; Giuseppe, Marengo; Muntau, H.

doi:10.1016/0048-9697(89)90229-5

Cited by 26 publications

(24 citation statements)

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“…These results can be explained by the proximity to the rayon factory discharge for station 13, and by the dating of the sediment core horizons for station 45. In fact, the 10 to 20-cm core horizon collected at station 45 was dated between 1948 and 1970, a period characterized by the highest water-column cuproammonium contamination (Baudo et al, 1989).…”

Section: Resultsmentioning

confidence: 99%

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Toxicity Identification Evaluation of Lake Orta (Northern Italy) Sediments Using the Microtox System

Guzzella

Bartone

Ross

et al. 1996

Ecotoxicology and Environmental Safety

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Section: Resultsmentioning

confidence: 99%

“…In a study of the spatial distribution of metals in Lake Orta sediments, Baudo et al (1989) demonstrated a transport of metal-enriched fine particles to this part of the lake from inputs located further to the south. This was called a ''focussing phenomenon'' (Baudo et al, 1989).…”

Section: Toxicity Identification Evaluation Of Lake Orta Sedimentsmentioning

confidence: 99%

Toxicity Identification Evaluation of Lake Orta (Northern Italy) Sediments Using the Microtox System

Guzzella

Bartone

Ross

et al. 1996

Ecotoxicology and Environmental Safety

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“…Given its phytotoxicity, Cu pollution led to the virtual disappearance of phytoplankton with a time lag of two years, and with resultant damage to the whole food chain (Monti, 1930;Baldi, 1949). In the 1960s and 1970s, industrial discharges of Cu, Cr, Ni and Zn from plating factories located in the southern part of the drainage basin constituted a second source of pollution (Bonacina et al, 1973(Bonacina et al, , 1988Baudo et al, 1989). While the load of copper from the rayon factory decreased after 1958, ammonium was still discharged in amounts of 2000-3000 t N yr -1 (Bonacina et al, 1986;de Bernardi et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Lake Orta chemical status 25 years after liming: problems solved and emerging critical issues

et al. 2016

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“…Baudo et al, 1989;Søndergaard, Jensen & Jeppesen, 2003;Trolle et al, 2008). While spatial heterogeneity in sediment is widely recognised, the estimation of burial rates or lake-wide fluxes of materials such as organic carbon do not often reflect this (e.g.…”

Section: Introductionmentioning

confidence: 99%

Contribution of sediment focussing to heterogeneity of organic carbon and phosphorus burial in small lakes

et al. 2011

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Contribution of sediment focussing to heterogeneity of organic carbon and phosphorus burial in small lakes. Freshwater Biology, 57 (2). 290-304.10.1111/j. 1365-2427.2011.02616.x Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. 2. We elucidated the heterogeneity of surface sediment distribution in a small lake, Esthwaite Water (UK). We considered multiple focusing mechanisms (downslope gravitational transport, waves, and wind-driven currents) and their effect on multiple sediment variables (water content, organic content, total phosphorus and benthic diatom taxon richness). In particular, we investigated the implications of different focusing processes for calculations of burial rates of organic carbon and total phosphorus. We used a new, high-resolution bathymetric survey of the lake in our calculations and compared the results to those from an earlier low-resolution bathymetric survey.4. Wave-driven focusing and downslope gravitational transport were not significant in Esthwaite Water. However, calculated wind-induced current speeds were sufficient to mobilise small particles at all depths of the lake and therefore could potentially be an important resuspension process in small lakes.5. We calculated that approximately half of the phosphorus entering the lake is retained in the sediments. This has important implications for the ability of the lake to recover from eutrophication because of the prolonged internal phosphorus loading capability.6. Differences in calculated burial rates due to sediment heterogeneity were much larger than those due to the difference in bathymetric resolution. Ignoring sediment heterogeneity when calculating flux-to-lake bed rates for organic carbon and total 3 phosphorus can lead to large inaccuracies, with implications for burial rate and budget studies.

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Spatial distribution patterns of metals in the surface sediments of Lake Orta (Italy)

Cited by 26 publications

References 1 publication

Toxicity Identification Evaluation of Lake Orta (Northern Italy) Sediments Using the Microtox System

Toxicity Identification Evaluation of Lake Orta (Northern Italy) Sediments Using the Microtox System

Lake Orta chemical status 25 years after liming: problems solved and emerging critical issues

Contribution of sediment focussing to heterogeneity of organic carbon and phosphorus burial in small lakes

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