The Dynamics and Use of Lacustrine Ecosystems

Trends in Finnish limnology during 1940-1989.- Clean water: a fading resource.- Uses, abuses and management of lakes and rivers.- Extracellular enzymes in a small polyhumic lake: origin, distribution and activities.- Significance of bacterial ectoenzymes in aquatic environments.- Kinetics of amino acids mineralization by a pond sediment bacterial community.- Microbial ecology of planktonic filamentous phototrophic bacteria in holomictic freshwater lakes.- Population dynamics of phototrophic bacteria in three basins of Lake Banyoles (Spain).- Estimating photosynthetically available radiation into open and ice-covered freshwater lakes from surface characteristics; a high transmittance case study.- Phosphorus transformations in the epilimnia of small humic forest lakes.- Differential luxury phosphate response of planktonic algae to phosphorus removal.- Temporal changes in biomass specific photosynthesis during the summer: regulation by environmental factors and the importance of phytoplankton succession.- Spatial changes of phytoplanktonic size spectra in Lake Biwa.- Phytoplankton and submerged macrophytes in the aquatic ecosystems of the Danube Delta during the last decade.- Phytoplankton and Zooplankton community structure after nutrient additions to the oligotrophic Lake Hecklan, Sweden.- Respiratory electron transport system (ETS) — activity of the plankton and sediment in Lake Balaton (Hungary).- Population dynamics of Bosmina longirostris (Crustacea: Cladocera) in Lake Kariba, Zimbabwe.- Plankton ecology in an ice-covered bay of Lake Michigan: utilization of a winter phytoplankton bloom by reproducing copepods.- The role of zoobenthos in energy flow in deep, oligotrophic Lake Thingvallavatn, Iceland.- Life history of Corophium curvispinum G. O. Sars (Crustacea,Amphipoda) living on macrophytes in Lake Balaton.- Experimental estimation of the food intake of larval vendace (Coregonus albula L.) under field conditions.- Food, growth, habitat, and community interactions of young-of-the-year burbot, Lota lota (Linn.), in a Precambrian Shield lake.- The response of burbot (Lota lota) to change in lake trout (Salvelinus namaycush) abundance in Lake Opeongo, Ontario.- Demography of spawning grayling (Thymallus arcticus) in the Beaverlodge River, Alberta.- An evaluation of the quality of fall-fingerling Atlantic salmon (Salmo salar L.) released to natural lacustrine nursery areas in Newfoundland, Canada.- Trophic state and its implications for natural reproduction of salmonid fish.- Ecological release in feeding behaviour: the case of bluegills in Japan.- Whitefish stocking in acidified lakes: ecological and physiological responses.- Can ecological theory be used to improve water quality?.- Indirect effects offish community structure on submerged vegetation in shallow, eutrophic lakes: an alternative mechanism.- Regulation of the development and species dominance of summer phytoplankton in Lake Vesijärvi: predictability of enclosure experiments.- Effects offish density on planktonic communities and water quality in a manipulated forest pond.- Impacts of bleak (Alburnus alburnus) and roach (Rutilus rutilus) on water quality, sedimentation and internal nutrient loading.- Lacustrine profundal meiobenthos as an environmental indicator.- Mass balance models for elongated lakes.- Transport processes in a sound of a large lake.- The benthic boundary layer approach and its application to Lake Päijänne, Finland.- Interpretation of mixed sediment profiles by means of a sediment-mixing model and radioactive fallout.- Evaluation of amodel-based method for designing water quality observations.- The effects of reduced phosphorus and nitrogen loading on phytoplankton in Mondsee, Austria.- Changes in water quality in Lake Päijänne following decrease of effluent load from the pulp and paper industry in 1969-1989.- Reproductive success of Coregonus species in areas loaded by effluents from paper mills.- Effects of paper mill effluents on the fish fauna of stony shores of Lake Päijänne.- The eutrophication of shallow coastal lakes in southwest England — understanding and recommendations for restoration, based on palaeolimnology, historical records, and the modelling of changing phosphorus loads.- The conservation status of athalassic lakes in New South Wales, Australia.- Effects of waterfowl on water quality.- Organic matter in the River Krutynia (Masurian Lakeland, Poland).- Effects of forest clear-cutting and soil disturbance on the biology of small forest brooks.- The effects of forest clear-cutting and scarification on the water quality of small brooks.- Total organochlorine and organobromine in Finnish water courses.- Concluding remarks I. Limnology now and in the future.- Concluding remarks IL A Finnish perspective.