The First International Lake Ladoga Symposium: Proceedings of the First International Lake Ladoga Symposium: Ecological Problems of Lake Ladoga, St. Petersburg, Russia, 22–26 November 1993

Front Matter....Pages i-xi
Ecological problems of Lake Ladoga: causes and solutions....Pages 1-7
The trophic state of Lake Ladoga as indicated by late summer phytoplankton....Pages 9-16
Bacterioplankton response to eutrophication in Lake Ladoga....Pages 17-22
Bottom sediments and biocoenoses of northern Ladoga and their changes under human impact....Pages 23-28
Meiofauna of the profundal zone of the northern part of Lake Ladoga as an indicator of pollution....Pages 29-38
Littoral zone of Lake Ladoga: ecological state evaluation....Pages 39-47
Invertebrate communities associated with macrophytes in Lake Ladoga: effects of environmental factors....Pages 49-55
Fishery of Lake Ladoga — past, present and future....Pages 57-64
New morphometrical data of Lake Ladoga....Pages 65-67
Main features of the thermal regime of Lake Ladoga during the ice-free period....Pages 69-73
Numerical modelling of large-scale circulation in Lakes Onega and Ladoga....Pages 75-80
Density structure of the fine surface water layer of large lakes and remote measurement of the temperature....Pages 81-84
Physical limnological processes under ice....Pages 85-90
Mixing in ice-covered lakes....Pages 91-97
The influence of seasonal and year-to-year variability of water discharge from the Lake Ladoga—Neva River system on the salinity regime of the Baltic Sea....Pages 99-102
The estimation of current state of Lake Ladoga using mathematical models....Pages 103-108
Particle pathways of Niagara river water in Lake Ontario affecting bottom sediment contamination....Pages 109-116
Water currents and spreading of river load in Lake Pyhäselkä, Saimaa, Finland....Pages 117-124
Joint Russian—Finnish study of radioactive contamination in the NW part of Lake Ladoga....Pages 125-127
Distribution and release of sedimentary phosphorus in Lake Ladoga....Pages 129-136
Ecologic and hygienic evaluation of Lake Ladoga as a source of drinking water....Pages 137-141
Lake Ladoga: chemical pollution and biochemical self-purification....Pages 143-147
A survey of toxicity of cyanobacterial blooms in Lake Ladoga and adjacent water bodies....Pages 149-151
Mathematical model for the ecosystem response of Lake Ladoga to phosphorus loading....Pages 153-157
The impact of effluents of Pitkäranta pulp mill on the water quality of Lake Ladoga: a model study....Pages 159-166
Protein indication method in monitoring of pulp mill effluent pollution in Lake Ladoga....Pages 167-171
Zooplankton characteristics in monitoring of Lake Ladoga....Pages 173-179
Species composition of planktonic Rotifera, Cladocera and Copepoda in the littoral zone of Lake Ladoga....Pages 181-185
Establishment of the Baikalian endemic amphipod Gmelinoides fasciatus Stebb. in Lake Ladoga....Pages 187-192
The Ladoga seal ( Phoca hispida ladogensis Nordq.)....Pages 193-198
Late- and postglacial history of lakes of the Karelian Isthmus....Pages 199-204
Shoreline displacement of Lake Ladoga — new data from Kilpolansaari....Pages 205-215
Lake Ladoga Region: human impacts and recent environmental changes....Pages 217-221
Atmospheric deposition of sulphur, nitrogen and base cations in Scots pine stands of south-eastern Finland and the Karelian Isthmus, NW Russia in 1992....Pages 223-226
Combined application of remote sensing and in situ measurements in monitoring environmental processes....Pages 227-232
Combined use of spectral brightness and polarization characteristics of upward radiation in remote sensing of inland waterbodies....Pages 233-236
Mathematical modelling of runoff and material transport from drainage areas into recipient water bodies....Pages 237-240
Water chemistry of Lake Ladoga and Russian-Finnish intercalibration of analyses....Pages 241-248
Comparison of methods used in zooplankton sampling and counting in the joint Russian-Finnish evaluation of the trophic state of Lake Ladoga....Pages 249-253
Phytoplankton composition and pigment concentrations as indicators of water quality in the Rybinsk reservoir....Pages 255-259
The relationship between fish yield and primary production in large European freshwater lakes....Pages 261-266
Spatial patterns and relationships between phytoplankton, zooplankton and water quality in the Saimaa lake system, Finland....Pages 267-276
Structural phase diagrams of animal communities in assessment of freshwater ecosystem conditions....Pages 277-282
Palaeolimnological analyses as information source for large lake biomonitoring....Pages 283-292
Comparison of sampling methods for semipelagic animals in two deep basins of Lake Saimaa....Pages 293-300
Sample size in the monitoring of benthic macrofauna in the profundal of lakes: evaluation of the precision of estimates....Pages 301-315
Back Matter....Pages 317-328