A5008599332- Fish Ecology and Management Studies
- Reproductive biology and impacts on aquatic species
- Fish Biology and Ecology Studies
- Marine and fisheries research
- Aquatic Invertebrate Ecology and Behavior
- Aquatic Ecosystems and Phytoplankton Dynamics
- Heavy metals in environment
- Environmental Toxicology and Ecotoxicology
- Spectroscopy and Chemometric Analyses
- Diffusion and Search Dynamics
- Mercury impact and mitigation studies
- Marine and coastal ecosystems
- Fish biology, ecology, and behavior
- Environmental Science and Water Management
- Nuclear Physics and Applications
- Child and Adolescent Psychosocial and Emotional Development
- Infant Health and Development
- Metabolomics and Mass Spectrometry Studies
- Identification and Quantification in Food
- Aquatic Ecosystems and Biodiversity
- Child Development and Digital Technology
- Marine Bivalve and Aquaculture Studies
Estonian University of Life Sciences
2015-2024
University of Tartu
2017-2022
Institute of the Estonian Language
2017-2021
Marine Institute
2021
Pikeperch, perch and bream are among the most traded valued fish species in North-Eastern Europe. Therefore, it is necessary to be able distinguish from different lakes coastal sea regions ensure a good traceability of products market protect both consumers stocks. Untargeted metabolomics using nuclear magnetic resonance (NMR) spectroscopy suitable tool for this purpose. It an established method determining various properties biological living systems, such as health, origin, type, etc....
Abstract European eel stocks are in a decline all over Europe. In Estonia, we analysed three different dataseries (commercial landings 1969–2014, scientific monitoring 1998–2014, and recreational catches 2005–2012). the commercial fishery, biggest drop occurred 1980s, with small recovery end of 1990s. We also interviewed fishers to evaluate quality official catch figures. dataseries, gathered by use special fykenets, steepest cpue last 5 years. Finally, fishery has almost stopped: 2012, were...
To investigate the difference in growth rates of eels studied water bodies (Võrtsjärv, Ülemiste, Saadjärv, Vagula, Kaiavere and Kuremaa lakes, all Estonia), 828 individual eel otoliths from years 1999–2004 2008–2012 were examined for age determination. Anguilla anguilla captured Lake Võrtsjärv mostly by professional fyke nets (mesh size >36 mm cod end) showed best rate (gR = 6.9 cm/year) had a high Fulton condition factor (K 0.19), indicating suitable conditions lake. However samples caught...
The European eel's singular spawning migration from waters towards the Sargasso Sea remains elusive, including early phase of at sea. During migration, movement freshwater resident eels river to sea has been thought be irreversible. We report first recorded incidents returning origin after spending up a year in marine environment. After migrating Baltic Sea, 21% silver eels, tagged with acoustic transmitters, returned Narva River. Half 11–12 months moving sea, 15 km being longest upstream...
Ecosystem models that measure the impact of quantitative interactions between trophic levels are widely used tools in ecosystem studies and fishery management. We constructed a mass-balance model using an Ecopath with Ecosim (EwE) modelling suite for large shallow Lake Võrtsjärv, Estonia. The was calibrated 36 years (1983–2018) included 23 functional groups. examined relationships, group interactions, energy fluxes, keystone groups having high on relative to their biomass. tested 6...
Abstract For the conservation and management of critically endangered European eel, it is crucial to maintain an overview on biomass eels moving from freshwater feeding areas sea for spawning. Rohtla et al. suggested assessment escapement Narva River Baltic Sea based their study origin yellow Estonian coastal Finnish areas. Silver coast have not been included in study. The number descending has investigated. sampling were located far river mouth, ranging 100 500 km away. article does include...
Abstract Monitoring heavy metal contaminants in fish is important for the assessment of environmental quality as well food safety. In this study, European eel samples were collected from Lake Köyceğiz and Võrtsjärv 2017 2018. The concentrations Mn, Cd, Zn, Pb, Cu metals measured by using GF-AAS four selected tissues eel, including liver, gill, skin, muscle both lakes. pollution indexes (P i , MPI) values calculated lakes health risk consumers was assessed adults children Turkey Estonia....