32 Result(s)
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Stefano M. Bernasconi
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Article
Open AccessAnthropogenic Eutrophication Drives Major Food Web Changes in Mwanza Gulf, Lake Victoria
Discerning ecosystem change and food web dynamics underlying anthropogenic eutrophication and the introduction of non-native species is necessary for ensuring the long-term sustainability of fisheries and lake...
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Open AccessIn-situ experiment reveals CO2 enriched fluid migration in faulted caprock
The sealing characteristics of the geological formation located above a CO2 storage reservoir, the so-called caprock, are essential to ensure efficient geological carbon storage. If CO2 were to leak through the c...
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Open AccessDeciphering local and regional hydroclimate resolves contradicting evidence on the Asian monsoon evolution
The winter and summer monsoons in Southeast Asia are important but highly variable sources of rainfall. Current understanding of the winter monsoon is limited by conflicting proxy observations, resulting from ...
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Open AccessMicrostructural characterization of natural fractures and faults in the Opalinus Clay: insights from a deep drilling campaign across central northern Switzerland
The Middle-Jurassic Opalinus Clay is the foreseen host rock for radioactive waste disposal in central northern Switzerland. An extensive drilling campaign aiming to characterize the argillaceous formation resu...
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Open AccessMetal-rich organic matter and hot continental passive margin: drivers for Devonian copper-cobalt-germanium mineralization in dolomitized reef-bearing carbonate platform
The abundance and types of reef-bearing carbonate platforms reflect the evolution of Devonian climate, with conspicuous microbial-algal reefs in the warm Early and Late Devonian and sponge-coral reefs in the c...
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Open AccessBiodegradation of poly(butylene succinate) in soil laboratory incubations assessed by stable carbon isotope labelling
Using biodegradable instead of conventional plastics in agricultural applications promises to help overcome plastic pollution of agricultural soils. However, analytical limitations impede our understanding of ...
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Open AccessMarine temperatures underestimated for past greenhouse climate
Understanding the Earth’s climate system during past periods of high atmospheric CO2 is crucial for forecasting climate change under anthropogenically-elevated CO2. The Mesozoic Era is believed to have coincided ...
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Open AccessClimate Change-Induced Changes in the Chemistry of a High-Altitude Mountain Lake in the Central Alps
Mountains are among the most sensitive ecosystems to climate change, and one of the most evident signs of climate-related effect is the continuous net loss of ice from the cryosphere. Several studies showed th...
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Open AccessHydrogeology and geochemistry of the sulfur karst springs at Santa Cesarea Terme (Apulia, southern Italy)
This work describes the geochemical and hydrogeological characteristics of Santa Cesarea Terme, an active sulfuric acid speleogenetic system located along the Adriatic coastline (Apulia, southern Italy). It re...
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Spatial pattern of super-greenhouse warmth controlled by elevated specific humidity
Earth’s climate sensitivity, defined as the temperature increase for a doubling of partial pressure of carbon dioxide ( \(p_{\mathrm{CO}_2}\) ...
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Open AccessFracture dolomite as an archive of continental palaeo-environmental conditions
The origin of Quaternary dolomites in continental environments (e.g. karst and lakes) is barely constrained compared to marine dolomites in sedimentary records. Here we present a study of dolomite and aragonit...
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Open AccessCold spells in the Nordic Seas during the early Eocene Greenhouse
The early Eocene (c. 56 - 48 million years ago) experienced some of the highest global temperatures in Earth’s history since the Mesozoic, with no polar ice. Reports of contradictory ice-rafted erratics and co...
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Environmental changes and carbon cycle perturbations at the Triassic–Jurassic boundary in northern Switzerland
The Triassic–Jurassic boundary is characterized by strong perturbations of the global carbon cycle, triggered by massive volcanic eruptions related to the onset of the Central Atlantic Magmatic Province. These...
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Palynology of Triassic–Jurassic boundary sections in northern Switzerland
A first palynostratigraphic scheme of Upper Triassic deposits in northern Switzerland was established based on spore-pollen associations and dinoflagellate cyst records from the upper part of the Upper Triassi...
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Open AccessDeeply-sourced formate fuels sulfate reducers but not methanogens at Lost City hydrothermal field
Hydrogen produced during water-rock serpentinization reactions can drive the synthesis of organic compounds both biotically and abiotically. We investigated abiotic carbon production and microbial metabolic pa...
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Open AccessA dual isotopic approach using radioactive phosphorus and the isotopic composition of oxygen associated to phosphorus to understand plant reaction to a change in P nutrition
Changing the phosphorus (P) nutrition leads to changes in plant metabolism. The aim of this study was to investigate how these changes are reflected in the distribution of 33P and the isotopic composition of oxy...
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Evidence of hydrothermal fluid flow in a hyperextended rifted margin: the case study of the Err nappe (SE Switzerland)
This paper investigates hydrothermal fluid circulation in pre- and syn-tectonic sediments associated with detachments faults. The study area, located in the Err Nappe (SE-Switzerland), preserves a portion of t...
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Biosignatures in chimney structures and sediment from the Loki’s Castle low-temperature hydrothermal vent field at the Arctic Mid-Ocean Ridge
We investigated microbial life preserved in a hydrothermally inactive silica–barite chimney in comparison with an active barite chimney and sediment from the Loki’s Castle low-temperature venting area at the A...
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SoilTrEC: a global initiative on critical zone research and integration
Soil is a complex natural resource that is considered non-renewable in policy frameworks, and it plays a key role in maintaining a variety of ecosystem services (ES) and life-sustaining material cycles within ...
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Shifts in isotopic signatures of animals with complex life-cycles can complicate conclusions on cross-boundary trophic links
Stable isotopes (13C and 15N) are widely applied in studies of trophic links. We used this method to investigate the contribution of aquatic and terrestrial prey to the diet of riparian predatory arthropods in tw...
