A5074279967- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine Bivalve and Aquaculture Studies
- Fish Biology and Ecology Studies
- Reproductive biology and impacts on aquatic species
- Aquatic Invertebrate Ecology and Behavior
- Isotope Analysis in Ecology
- Coral and Marine Ecosystems Studies
- Global Trade and Competitiveness
- Ichthyology and Marine Biology
- Indigenous Studies and Ecology
- Russia and Soviet political economy
- Marine and coastal ecosystems
- Identification and Quantification in Food
- Marine Biology and Ecology Research
- Oceanographic and Atmospheric Processes
- Avian ecology and behavior
University of Tartu
2010-2024
Institute of the Estonian Language
2022
Marine Institute
2005-2006
Gibel carp Carassius gibelio (Bloch) was first introduced into fish ponds and small lakes of Estonia in 1948–49, detected Estonian brackish waters (Gulf Riga) 1985. Since the mid-1990s, species has spread along entire Baltic coastline. Growth rate water population does not differ much from freshwater populations, but populations are gynogenetic (or show high dominance females) contrast to Sea population, which presents a normal sex ratio. The recent explosion this could be explained by...
Abstract Vetemaa, M., Eschbaum, R., Albert, A., Saks, L., Verliin, Jürgens, K., Kesler, Hubel, Hannesson, and Saat, T. 2010. Changes in fish stocks an Estonian estuary: overfishing by cormorants? – ICES Journal of Marine Science, 67: 1972–1979. In Estonia, the cormorant Phalacrocorax carbo sinensis is a newcomer, its numbers have increased rapidly since 1985. shallow protected (no fishery) Käina Bay Väinameri (West Estonia), colony was established 1995. Gillnet sampling indicated that roach...
Abstract Native to the Ponto-Caspian region, benthic round goby ( Neogobius melanostomus ) has invaded several European inland waterbodies as well North American Great Lakes and Baltic Sea. The species is capable of reaching very high densities in ecosystems, with not only evidence for significant food-web effects on native biota habitats, but also negative implications coastal fishers. Although generally considered a species, it been shown that migrate deeper areas other lakes during cold...
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...
Ecosystems are simultaneously regulated by bottom-up (resources) and top-down forces (predators). However, because predator-prey interactions operate on spatial scales beyond the reach of manipulative experimentation, actual roles predators remain poorly understood. In ecosystems where naturally absent, biological invasions provide a unique experiment to shed light large-scale long-term effects in recipient ecosystem. We combined data from benthic monitoring, environmental conditions, census...
Abstract – Matsalu Bay in the Väinameri (West‐Estonian Archipelago Sea) is a relatively shallow but large bay. It only real delta estuary northern Baltic Sea. The fish fauna strongly dominated by freshwater species such as perch Perca fluviatilis , roach Rutilus rutilus white bream Blicca bjoerkna and rudd Scardinius erythrophthalmus . study presents CPUE data describing annual seasonal variations composition, abundance spatial distribution, based on 1 year of monthly samplings from August...
In 2020, the presence of a novel non-indigenous species, eastern tubenose goby Proterorhinus semipellucidus (Kessler, 1877), was documented in Gulf Finland, Baltic Sea. As invasion may have comprehensive ecological impact on local ecosystem, it has to be confirmed whether species established an independently reproducing population or persists through continuous invasions this area. We examined otolith microstructure determine age specimens sampled from southern and northern coasts Finland....
Abstract Otolith Sr:Ca and Ba:Ca profiles were used in parallel with age data to investigate the life‐history characteristics of ide, Leuciscus idus (L.) ( n = 111), Väinameri Sea, West Estonia. more variable useful than profiles. Flexible patterns observed within among three study sites. Most individuals (72%) hatched semi‐enclosed bays that are fresh water during spring spawning but often flooded brackish other seasons. The importance lotic varied sites was highest (88%) Matsalu Bay,...
Abstract To stop the decline of European eel population, one measures taken is translocating eels for restocking, despite its conservational value being largely unknown. We aimed to contribute this knowledge gap by (i) investigating origin caught in coastal waters Estonia and Finland using otolith microchemistry (ii) directly estimating restocked escapement from Narva River Basin District (NRBD), which part primary Eel Management Unit Estonia. In Estonia, 74% sampled (n = 140) were natural...
Abstract Restocking European eel (Anguilla anguilla) is generally considered as a conservation action, but its true value remains unknown and currently debated over. Estimation of the biomass escaping silver eels one way to partially measure success restocking. Tuvikene et al. in comment Rohtla criticize data that were used reach conclusion goals fully restocked management unit Estonia are not being met. While acknowledging some potential unavoidable sampling biases our study need be...
In this study, we report the environmental impact of water exchange blocking by a 3 km road dam built in 1896 shallow Väike Strait, north-eastern Baltic Sea. Using multidisciplinary measurement campaign and numerical simulations, show ecological conditions strait have considerably altered; previously free-flowing now comprises two bays with separate circulation systems. Water area close to has decreased 10–12-fold. Since advection is weakened, atmosphere sediments relatively greater role...