Liva Trasune
A5054433163- Geology and Paleoclimatology Research
- Geological formations and processes
- Pleistocene-Era Hominins and Archaeology
- Tree-ring climate responses
- Fire effects on ecosystems
- Aquatic Ecosystems and Phytoplankton Dynamics
- Archaeology and ancient environmental studies
- Isotope Analysis in Ecology
- Freshwater macroinvertebrate diversity and ecology
- Lichen and fungal ecology
- Aeolian processes and effects
University of Helsinki
2021-2024
Bolin Centre for Climate Research
2024
Stockholm University
2024
University of Latvia
2021-2022
A series of abrupt climate events linked to circum-North Atlantic meltwater forcing have been recognised in Holocene paleoclimate data. To address the paucity proxy records able characterise robustly regional impacts these events, we retrieved a sub-centennial resolution, well-dated core sequence from Lake Kuutsjärvi, northeast Finland. By analysing range paleo-environmental proxies (pollen, plant sedimentary ancient DNA, macrofossils, conifer stomata, and non-pollen palynomorphs), supported...
Abstract. Sedimentary charcoal records are widely used to reconstruct regional changes in fire regimes through time the geological past. Existing global compilations not geographically comprehensive and do provide consistent metadata for all sites. Furthermore, age models provided these harmonised many based on older calibrations of radiocarbon ages. These issues limit use existing research into past regimes. Here, we present an expanded database records, accompanied by new recalibration...
The recent advancements of new quantitative tools compatible with plant macrofossil proxy data have revived its potential for paleoclimate research. Plant macrofossils are commonly used in so-called indicator-species approaches, using methodologies that typically built on known observations linking modern distributions climate. This allows complementary reconstructions an approach is not limited by the spatial availability calibration samples obtained from surface sediments (e.g., pollen or...
Modern pollen composition obtained from waterbody surface sediment represents surrounding vegetation and landscape features. A lack of detailed information on modern Latvia potentially limits the strength various pollen-based reconstructions (vegetation composition, climate, landscape, human impact) for this territory. The aim study is to compare how natural human-made waterbodies reflects actual characteristics. analyses samples 36 alongside oceanic-continental, lowland-upland, urban-rural...
Abstract. Sedimentary charcoal records are widely used to reconstruct regional changes in fire regimes through time the geological past. Existing global compilations not geographically comprehensive and do provide consistent metadata for all sites. Furthermore, age models provided these harmonised many based on older calibrations of radiocarbon ages. These issues limit use existing research into past regimes. Here, we present an expanded database records, accompanied by new recalibration...