European Large Lakes Ecosystem changes and their ecological and socioeconomic impacts

TABLE OF CONTENTS......Page 6
Preface......Page 9
Nutrients and phytoplankton in Lake Peipsi during two periods that differed in water level and temperature......Page 11
Pollen, diatom and plant macrofossil assemblages indicate a low water level phase of Lake Peipsi at the beginning of the Holocene......Page 20
Water level changes in a large shallow lake as reflected by the plankton:periphyton-ratio of sedimentary diatoms......Page 29
Changes in spatial distribution of phosphorus and nitrogen in the large north-temperate lowland Lake Peipsi (Estonia/Russia)......Page 37
Recent trends in Lake Ladoga ice cover......Page 46
History of anthropogenically mediated eutrophication of Lake Peipsi as revealed by the stratigraphy of fossil pigments and molecular size fractions of pore-water dissolved organic matter......Page 54
Seasonality and trends in the Secchi disk transparency of Lake Ladoga......Page 64
Silicon load and the development of diatoms in three river-lake systems in countries surrounding the Baltic Sea......Page 71
Critical N:P ratio for cyanobacteria and N2-fixing species in the large shallow temperate lakes Peipsi and Võrtsjärv, North-East Europe......Page 81
Phytoplankton nitrogen demand and the significance of internal and external nitrogen sources in a large shallow lake (Lake Balaton, Hungary)......Page 91
Changes in the water level of Lake Peipsi and their reflection in a sediment core......Page 100
Rates of change in physical and chemical lake variables – are they comparable between large and small lakes?......Page 108
Increasingly ice-free winters and their effects on water quality in Sweden\'s largest lakes......Page 114
Phosphorus fractions and alkaline phosphatase activity in sediments of a large eutrophic Chinese lake (Lake Taihu)......Page 122
The impact of the invasive Ponto-Caspian amphipod Pontogammarus robustoides on littoral communities in Lithuanian lakes......Page 129
Spatiotemporal and long-term variation in phytoplankton communities in the oligotrophic Lake Pyhäjärvi on the Finnish-Russian border......Page 137
Plant-associated invertebrates and hydrological balance in the large volcanic Lake Bracciano (Central Italy) during two years with different water levels......Page 144
A comparison of zooplankton densities and biomass in Lakes Peipsi and Võrtsjärv (Estonia): rotifers and crustaceans versus ciliates......Page 154
Validation of the MERIS products on large European lakes: Peipsi, Vänern and Vättern......Page 161
Relations of phytoplankton in situ primary production, chlorophyll concentration and underwater irradiance in turbid lakes......Page 169
Models as tools for understanding past, recent and future changes in large lakes......Page 177
The ice cover on small and large lakes: scaling analysis and mathematical modelling......Page 183
Effects of warmer world scenarios on hydrologic inputs to Lake Mälaren, Sweden and implications for nutrient loads......Page 190
Variability of bio-optical parameters in two North-European large lakes......Page 199
Contributions of DOC from surface and groundflow into Lake Võrtsjärv (Estonia)......Page 210
Implications of flexibility in European Community environmental law: exemptions from environmental objectives in the Water Framework Directive......Page 218
Analysis of long-term ecological status of Lake Balaton based on the ALMOBAL phytoplankton database......Page 224
Towards ecological goals for the heavily modified lakes in the IJsselmeer area, The Netherlands......Page 235
Environmental awareness of the permanent inhabitants of towns and villages on the shores of Lake Balaton with special reference to issues related to global climate change......Page 244
Highlights of large lake research and management in Europe......Page 253