Publications
Recent Submissions
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Generalist invasion in a complex lake food web
(Wiley, 2023)Invasive species constitute a threat not only to native populations but also to the structure and functioning of entire food webs. Despite being considered as a global problem, only a small number of studies have quantitatively ... -
Strong temporal variation of consumer δ13C value in an oligotrophic reservoir is related to water level fluctuation
(Nature Portfolio, 2023)Using stable carbon and nitrogen isotope analysis (δ 13 C and δ 15 N) to assess trophic interactions in freshwater ecosystems is a well established method, providing insight into ecosystem functioning. However, the spatial ... -
Changes in nutrient concentration and water level affect the microbial loop: a multi-seasonal mesocosm experiment
(Springer, 2023)Eutrophication and lake depth are of key importance in structuring lake ecosystems. To elucidate the effect of contrasting nutrient concentrations and water levels on the microbial community, we manipulated water depth and ... -
Behavioural responses of invasive (Gmelinoides fasciatus) and native (Gammarus lacustris) amphipods to predators on different bottom substrates
(Springer, 2023)The amphipod Gmelinoides fasciatus has invaded and established in numerous large lakes in Eurasia and, in the process, has displaced the native amphipod, Gammarus lacustris. The mechanism behind its invasion success ... -
Bimodality and alternative equilibria do not help explain long-term patterns in shallow lake chlorophyll-a
(Springer Nature, 2023)Since its inception, the theory of alternative equilibria in shallow lakes has evolved and been applied to an ever wider range of ecological and socioecological systems. The theory posits the existence of two alternative ... -
Effects of filtration timing and pore size on measured nutrient concentrations in environmental water samples
(Wiley, 2022)Nutrient monitoring is important for informing management decisions to mitigate eutrophication in aquaticsystems. Many nutrient monitoring programs usefilter pore sizes that allow microorganisms to pass into sam-ples and/or ... -
The comparison of the feeding of European perch Perca fluviatilis L. larvae in littoral and pelagic habitats of northern temperate lakes
(Estonian Academy Publishers, 2022)We studied the feeding of European perch Perca fluviatilis L. larvae in littoral and pelagic habitats of four different lakes – one Latvian (Auciema) and three Estonian (Akste, Kaiavere, and Prossa). Altogether, 162 perch ... -
Effects of environmentally relevant concentrations of microplastics on amphipods
(Elsevier, 2022)Lack of microplastics (MP) toxicity studies involving environmentally relevant concentrations and exposure times is concerning. Here we analyzed the potential adverse effects of low density polyethylene (LDPE) MP ... -
Opportunities for combining data of Estonian and Russian monitoring to reflect on water quality in large transboundary Lake Peipsi
(Elsevier, 2022)Lake Peipsi, one of the world’s largest lakes, is shared between Estonia and Russia. The water quality in different parts of the lake has so far been assessed independently. Here we explore opportunities for combining ... -
Summer greenhouse gas fluxes in different types of hemiboreal lakes
(Elsevier, 2022)Lakes are considered important regulators of atmospheric greenhouse gases (GHG). We estimated late summer open water GHG fluxes in nine hemiboreal lakes in Estonia classified under different lake types according to ... -
Prey selection and growth in 0+ Eurasian perch Perca fluviatilis L. in littoral zones of seven temperate lakes
(Wiley, 2022)We studied the relationships between the planktonic food base and feeding patterns of juvenile mid-summer/ early autumn Eurasian perch Perca fluviatilis L., a common predatory freshwater fish in large parts of Europe ... -
The influence of macrophyte ecological groups on food web components of temperate freshwater lakes
(Elsevier, 2022)Aquatic macrophyte taxonomic composition, species abundance and cover determine the physical structure, complexity and heterogeneity of aquatic habitats – the structuring role of macrophytes. These traits influence richness, ... -
Diet and trophic niche of the invasive signal crayfish in the first invaded Italian stream ecosystem
(Nature, 2021)The occurrence of the signal crayfsh Pacifastacus leniusculus in the Valla Stream was the frst established population of this invasive species recorded in an Italian stream ecosystem. We evaluated the seasonality of diet ... -
6 põhjust, miks Peipsi järv vajab tähelepanu : [faktileht]
(Eesti Maaülikool, 2021)Peipsi järv on Euroopa üks kalarikkam ja suurim piiriülene järv. Õigupoolest koosneb järv kolmest osast: Peipsi, Pihkva ja Lämmijärvest. Kuna jagame järve Venemaaga, siis keskkonnakaitse meetmeid tuleb ellu viia ... -
From microscopy to genes – tracing toxic cyanobacteria in a shallow eutrophic lake
(Estonian University of Life Sciences, 2022)Global warming paired with eutrophication processes is shifting phytoplankton communities towards the dominance of bloom-forming and potentially toxic cyanobacteria. Cyanobacterial blooms are considered an increasing threat ... -
Phytoplankton as ecological quality indicator of lakes
(Estonian University of Life Sciences, 2021)According to Water Framework Directive (WFD), phytoplankton abundance, composition and bloom metrics should be used in lake ecological quality assessment. Phytoplankton is highly sensitive to environmental changes and can ... -
Hydrometeorological and climatic control over lake phytoplankton : the importance of time scales
(Estonian University of Life Sciences, 2021)Phytoplankton reflects changes in the environment and plays a vital role in biogeochemical cycles and the climate system. The thesis attempts to link the phytoplankton dynamics with the timing, intensity, and duration of ... -
Impact of climate change and other ecological factors on selected fish populations and fishery in Estonian large lakes
(Estonian University of Life Sciences, 2021)Human activities and climate change have become the most consequential threats to freshwater ecosystems and their inhabitants, especially fish. The response of the fish population to their environment is not always ... -
The impact of climate change and eutrophication on phosphorus forms in sediment: Results from a long-term lake mesocosm experiment
(Elsevier, 2022)Characteristics of bottom sediments in lake mesocosms 11 years after starting the experiment were studied in order to determine the effects of nutrient loading, temperature increase and vegetation type on concentration ... -
Nitrate as a predictor of cyanobacteria biomass in eutrophic lakes in a climate change context
(Elsevier, 2022)We aimed to predict cyanobacteria biomass and nitrate (NO₃) concentrations in Lake Võrtsjärv, a large, shallow, and eutrophic lake in Estonia. We used a model chain based on the succession of a mechanistic (INCA-N) ...
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