A5026505148- Microbial Community Ecology and Physiology
- Geology and Paleoclimatology Research
- Geological and Geophysical Studies
- Environmental DNA in Biodiversity Studies
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Protist diversity and phylogeny
- Geochemistry and Geologic Mapping
- Geochemistry and Elemental Analysis
- Hydrocarbon exploration and reservoir analysis
- Archaeology and ancient environmental studies
- Building materials and conservation
- Aquatic Ecosystems and Biodiversity
- Archaeological Research and Protection
- Atmospheric and Environmental Gas Dynamics
- Pleistocene-Era Hominins and Archaeology
- Paleontology and Stratigraphy of Fossils
- Isotope Analysis in Ecology
- Pluripotent Stem Cells Research
- Groundwater and Isotope Geochemistry
- Forensic and Genetic Research
- Planetary Science and Exploration
- Microbial Fuel Cells and Bioremediation
- Renal and related cancers
- Aquatic Ecosystems and Phytoplankton Dynamics
Oeschger Centre for Climate Change Research
2016-2024
University of Bern
2016-2024
Umeå University
2022-2024
AstraZeneca (Sweden)
2022
Abstract. The Towuti Drilling Project (TDP) is an international research program, whose goal to understand long-term environmental and climatic change in the tropical western Pacific, impacts of geological changes on biological evolution aquatic taxa, geomicrobiology biogeochemistry metal-rich, ultramafic-hosted lake sediments through scientific drilling Lake Towuti, southern Sulawesi, Indonesia. a large tectonic at downstream end Malili system, chain five highly biodiverse lakes that are...
Advances in regenerative medicine have led to the construction of many types organoids, which reproduce important aspects endogenous organs but may be limited or disorganized nature. While their usefulness for restoring function remains unclear, they undoubted research, diagnostics, and toxicology. In toxicology, there is an urgent need better models human kidneys. We used iPS-cell (hiPSC)-derived renal organoids identify HMOX1 as a useful marker toxic stress via oxidative pathway, then...
Abstract. The sulfur cycle is very important in lake sediments, despite the much lower sulfate concentrations freshwater than seawater. To date, little known about formation and preservation of organic inorganic compounds such especially sulfate-depleted subsurface. Here we investigated fate buried S-compounds down to 10-m sediment depth, which represents entire ~13.5 kya sedimentary history, sulfate-rich alpine Lake Cadagno. Chemical profiles reduced reveal that from water depleted at...
The analysis of environmental DNA (eDNA) from sediments has become an important method to study past ecosystem dynamics, offering new perspectives for paleoecological research. Yet, the temporal and spatial variability in sources transport pathways sediment remain underexplored. We studied how plant signal varies between annual lamina (or varves) Nylandssjön, a small boreal lake northern Sweden, 1991 2020. During this time period vegetation community composition catchment was stable...
The Lake Victoria ecosystem is emblematic of the catastrophic effects that human activities, particularly cultural eutrophication, can have on freshwater biodiversity. However, little known about long-term spatial and temporal pattern aquatic primary paleo-production (PPaq) producer communities in how these patterns relate to past climate variability, landscape evolution, lake hydrology, mixing regimes, nutrient cycling, biodiversity dynamics 17 kyr. We use sediments from four well-dated...
Abstract Lake Towuti on Sulawesi Island, Indonesia, is located within the heart of Indo‐Pacific Warm Pool. This tropical lake surrounded by ultramafic (ophiolitic) rocks and lateritic soils that create a unique ferruginous depositional setting. In order to understand modern sediment deposition in Towuti, set 84 surface samples was collected from across entirety were analyzed for their physical, chemical, mineralogical biological constituents. End‐member analyses carried out elucidate origin,...
Although lake sediments are globally important organic carbon sinks and therefore habitats for deep microbial life, the lacustrine biosphere has thus far been little studied compared to its marine counterpart. To investigate impact of underexplored on sediment geochemical environment vice versa, we performed a comprehensive microbiological characterization sedimentary sequence from Lake Cadagno covering entire environmental history since formation following glacial retreat. We found that...
Abstract Analysis of environmental DNA detected in lake sediments shows promise to become a great paleoecological technique that can provide detailed information about organism communities living past environments. However, when interpreting sedimentary records, it is crucial importance separate ecosystem responses large‐scale change from “noise” caused by changes sediment provenance or potential post‐depositional mobility. In this study, we show plant and mammalian reconstructed are...
Metabarcoding of environmental DNA constitutes a state-of-the-art tool for studies. One fundamental principle implicit in most metabarcoding studies is that individual sample amplicons can still be identified after being pooled with others-based on their unique combinations tags-during the so-called demultiplexing step follows sequencing. Nevertheless, it has been recognized tags sometimes changed (i.e., tag jumping), which ultimately leads to crosstalk. Here, using four data sets derived...
ABSTRACT Continental and marine sediments are composed of a mixture from different sources influenced by variety environmental factors transport processes prior to deposition. For analysis interpretation, these often challenging disentangle. We show that end‐member modelling X‐ray fluorescence (XRF) core‐scanning data helps overcome challenges unmixing signals high‐resolution sediment geochemical records. apply this approach 100 m long lacustrine succession Lake Towuti, Indonesia, separate...
Reconstructing hydrological variability is critical for understanding Lake Victoria's ecosystem history, the evolution of its diverse endemic fish community, dynamics vegetation in catchment, and dispersal aquatic terrestrial fauna East African Rift system during Latest Pleistocene Holocene times. Whereas consensus exists on widespread desiccation Victoria ∼18 – 17 ka, re-filling history (16 13 ka) has remained highly controversial. Here, we present data from four new sediment cores along a...
Ferruginous conditions prevailed in the oceans through much of Earth's history.However, minerals recording these remain difficult to interpret terms biogeochemical processes prior lithification.In Lake Towuti, Indonesia, ferruginous sediments are deposited under anoxic sulfate-poor similar Proterozoic oceans, allowing study mineralogical (trans)formations during microbial diagenesis.Comprehensive pore water geochemistry, high resolution geochemical core profiles, and electron microscopy...
Abstract Iron is the most abundant redox‐sensitive element on Earth's surface, and oxidation state, mineral host, crystallinity of Fe‐rich phases in sedimentary systems can record details water‐rock interactions environmental conditions. However, we lack a complete understanding how these materials are created, maintained, oxidized or reduced environments, particularly those with mafic sources. The catchment Lake Towuti, Indonesia, known to contain wide range crystalline Fe oxide, lake has...
Although rare, temporally and taxonomically highly-resolved palaeoecological studies with high chronological precision are essential to perform detailed comparisons precisely dated independent evidence such as archaeological findings, historical events, or palaeoclimatic data. Using a new chronologically precise sedimentary record from Lago di Mezzano (central Italy), we reconstruct decadal-scale vegetation, species diversity, fire dynamics, aiming better understand the linkages between...
<p>Mountain ecosystems are particularly sensitive to soil erosion and it is critical better understand how climate human activities can be linked in the alpine environment. To explore this link across time, we combine sedimentary ancient DNA (sedaDNA) analyses with proxies assess timing type of animal husbandry Eastern Alps its impact on hill-slope processes vegetation. With clear continuous history, sediment record contained Lake Grosssee, Switzerland, ideally suited resolve...