A5051214827- Diatoms and Algae Research
- Geology and Paleoclimatology Research
- Marine and coastal ecosystems
- Aquatic Invertebrate Ecology and Behavior
- Aquatic Ecosystems and Phytoplankton Dynamics
- Coastal wetland ecosystem dynamics
- Water Systems and Optimization
- Protist diversity and phylogeny
- Arctic and Antarctic ice dynamics
- Methane Hydrates and Related Phenomena
- Isotope Analysis in Ecology
- Flood Risk Assessment and Management
- Environmental DNA in Biodiversity Studies
- Ecology and biodiversity studies
- Cryospheric studies and observations
- Climate change and permafrost
- Geological formations and processes
- Microbial Community Ecology and Physiology
Umeå University
2013-2019
Abstract Winter is an important season for many limnological processes, which can range from biogeochemical transformations to ecological interactions. Interest in the structure and function of lake ecosystems under ice on rise. Although limnologists working at polar latitudes have a long history winter work, required knowledge successfully sample conditions not widely available relatively few receive formal training. In particular, deployment operation equipment below 0°C temperatures pose...
To assess the rates of compaction in recent, varved (annually laminated) lake sediments, we used a collection 13 freeze cores sampled from 1979 to 2012 Nylandssjön (northern Sweden). This unique series stored allowed us measure how thickness individual varves changed when they were overlain by new varves. The rate was greatest during first few years after deposition; varve decreased 60% 5 (sediment depth cm). Thereafter, declined, but 33 (the study period) there still weak trend continued 12...
Abstract Disentangling the process information contained in a diatom sediment signature is crucial for reliable future predictions based on paleolimnological records. In this study, we combine limnological and monitoring to address fundamental question: Which environmental signal? We compared annual sequential trap records with record of annually varved lake Nylandssjön (northern Sweden) from three meteorologically different years (2012–2014). The seasonal patterns sedimentation were...
Sediment trap studies and high frequency monitoring are of great importance to develop a deeper understanding how seasonal environmental processes imprinted in sediment signal formation. We collected whole year diatom assemblages from 2002 2014 with sequential varved boreal lake (Nylandssjön, Sweden) together limnological parameters, compared them the corresponding record annual laminated sediment. Our data set indicates large year-to-year variability succession abundance patterns, which is...