Chemistry of Atmospheric Depositions at L. Toggia (2160 m a.s.l.), with Emphasis on the Sampling Procedure

Mosello, Rosario; Tartari, Gabriele

doi:10.1007/978-94-009-3841-0_19

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Since originally the lake was nitrogen and phosphorus limited , the increase in nitrate and ammonium could have produced a slight eutrophication in the lake. Analyses on snow-core samples demonstrated that the watershed of this lake receives high loads of SO 4 , NO 3 and NH 4 (Mosello & Tartari, 1987).…”

Section: Lake Paione Superiorementioning

confidence: 99%

Palaeoenvironmental Changes Inferred from Biological Remains in Short Lake Sediment Cores from the Central Alps and Dolomites

et al. 2006

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In this paper we review research on eutrophication, acidification and climate change based on studies of lake sediments in the Alps. Studies on fossil diatoms, chrysophytes, plant pigments, Cladocera and carbonaceous particles in a number of high altitude lakes in Italy and Switzerland have been used to track environmental changes. We present an original study on fossil Cladocera in sediment cores from 29 lakes that have shown changes in biodiversity from the pre-industrial period (ca. pre AD 1850) to the present. These data show that altitude, ca. 60 years of acidification impacts and fish stocking are the most important factors that affect their distribution and abundance. We review further case studies from two morphometrically and chemically different lakes (Tovel and Paione Superiore). Their lake sediment records span 400 and 150 years, respectively; multi-core, multi-proxy analyses show their pH, trophic and climatic evolution over time.

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Section: Lake Paione Superiorementioning

confidence: 99%

Palaeoenvironmental Changes Inferred from Biological Remains in Short Lake Sediment Cores from the Central Alps and Dolomites

et al. 2006

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“…The composition of atmospheric deposition results generally from the interactions of strong acids (H2SO4, HNO3), bases (NH3) and wind-blown dust and aerosols (CaCO3, MgCO3, NH4NO3, NaCl, KC1) (Stumm et al, 1983). The values given in Table 3 for atmospheric deposition were compiled from data measured regularly at a sampling station I0 km west of Lake Cristallina (Mosello and Tartari, 1987) Evapoconcentration factor = precipitation/runoff = 1.7 m/1.2 m = 1.42. 2 NH4 assimilation: NH4 + ~ (NH3)org + H +.…”

Section: Weathering Processes Regulating the Chemical Water Compositionmentioning

confidence: 99%

Chemical Weathering of Crystalline Rocks in the Catchment Area of Acidic Ticino Lakes, Switzerland

Giovanoli

1988

Clays and clay miner.

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A~traet--Atmospheric acidic deposition introduces hydrogen ions to terrestrial and aquatic ecosystems, which become partially neutralized by chemical weathering. In the southern Alps of Switzerland, small catchments containing little or no soil and lacking carbonate minerals represent sensitive hydrological settings in which the relationship between alteration of granitic gneiss by acid deposition and the resulting composition of lake waters can be studied. Transmission and scanning electron microscopy, coupled with X-ray powder diffraction of lake sediments from such areas showed mainly unaltered minerals from parent rocks and no secondary silicate minerals. Element mapping indicated noncrystalline aluminum hydroxide as a product of the chemical weathering of silicates. Noncrystalline iron hydroxide was also observed. Mass balance calculations and the stoichiometry of suitable chemical reactions representing the weathering processes were used to derive a plausible reaction sequence on the interaction of the predominant reactive rock minerals with acid precipitation that accounted for the measured chemical composition of the acid lakes.

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The environmental history of a mountain lake (Lago Paione Superiore, Central Alps, Italy) for the last c. 100 years: a multidisciplinary, palaeolimnological study

et al. 1996

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Chemistry of Atmospheric Depositions at L. Toggia (2160 m a.s.l.), with Emphasis on the Sampling Procedure

Cited by 4 publications

References 8 publications

Palaeoenvironmental Changes Inferred from Biological Remains in Short Lake Sediment Cores from the Central Alps and Dolomites

Palaeoenvironmental Changes Inferred from Biological Remains in Short Lake Sediment Cores from the Central Alps and Dolomites

Chemical Weathering of Crystalline Rocks in the Catchment Area of Acidic Ticino Lakes, Switzerland

The environmental history of a mountain lake (Lago Paione Superiore, Central Alps, Italy) for the last c. 100 years: a multidisciplinary, palaeolimnological study

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