Now showing items 1-6 of 6
The Structuring Role of Lake Conditions for Aquatic Macrophytes
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 ...
Effects of macrophytes, fish and metazooplankton on a microbial food web
In general, it was thought that all primary production is channelled through a classical grazing food web from phytoplankton to zooplankton and finally to fish. However, last decades of studies have shown that this simple ...
Dissolved organic matter and its ecological role in large and shallow water bodies
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 ...
How phytoplankton pigments reflect historical and contempoarary status of large shallow lakes?
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
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
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 ...