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How phytoplankton pigments reflect historical and contempoarary status of large shallow lakes?
(Eesti Maaülikool, 2012)
Phytoplankton is the most important primary producer in the aquatic ecosystems and account for half of all photosynthetic activity on earth, thus creating the base for most aquatic food chains. It also plays key role in ...
Productivity and nutrient retention of lakes on seasonal, interannual and morphometric scales
(Eesti Maaülikool, 2012)
Despite the considerable percentage of inland waters in the temperate zone land cover, their role in the global carbon balance is not clear and the existing data suggest large type specific differences.
Respiratory CO2 ...
The diet of juvenile pikeperch Sander lucioperca in lakes Peipsi and Võrtsjärv: relations between long-term changes in the fish communities and food resources in large shallow lakes
(Eesti Maaülikool, 2012)
Pikeperch, Sander lucioperca (L.), is a pelagic predator, which plays a key role in many inland water bodies of the temperate zone by structuring populations at lower trophic levels (Frankiewicz et al., 1997; Dörner et ...
Dissolved organic matter and its ecological role in large and shallow water bodies
(Eesti Maaülikool, 2013)
About 90% of the organic matter in most aquatic systems is dissolved organic matter (DOM) and the rest
forms the pool of particulate organic matter. DOM plays a significant role in the carbon and energy cycle of
water ...
High-Frequency Measurements - A New Approach in Limnology
(Eesti Maaülikool, 2017)
Until recently, time consuming and costly manual measurements have been predominating in lake research and monitoring. Usually, this kind of measurements do not provide sufficient temporal and spatial resolution if any. ...
Effects of natural and anthropogenic pressures on variations in the water quality of large lakes
(Eesti Maaülikool, 2014)
An understanding of the factors that drive the water quality of large lakes is critical to the protection of such waterbodies. In the present study, the contributions made by riverine nutrient loading, sediment resuspension ...
Phytoplankton as ecological quality indicator of lakes
(Eesti Maaülikool, 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 ...
Pigment-based chemotaxonomy – efficient tool to quantify phytoplankton groups in lakes and coastal sea areas
(Eesti Maaülikool, 2019)
All members of the aquatic food web rely either directly on indirectly on the autotrophic phytoplankton. The distribution and dynamics of phytoplankton groups reflects a number of things: rate of eutrophication, biogeochemical ...
Organic matter in temperate lakes – monitoring and connections with catchment
(Eesti Maaülikool, 2019)
Organic matter (OM) has an important role in lakes as a pH buffer in low alkalinity waters and acting as an energy source for heterotrophic microorganisms. Increasing OM concentrations in lakes have been reported as a ...
The Structuring Role of Lake Conditions for Aquatic Macrophytes
(Eesti Maaülikool, 2012)
Macrophytes play an important role in lake ecosystems, which provisionally can be divided into an active role consisting of modifying in-lake processes and creating habitat for other groups of biota, and a passive role ...