PART ONE - REMOTE SENSING 2.Remote sensing- and geo-databases Marek Mróz, Magdalena Mleczko, Przemysław Slesiński 2.1.Satellite SAR imageries 2.1.1.Sentinel-1 - mission and products description 2.1.2.Sentinel-1 - description of the collected data 2.1.3.TerraSAR-X/TanDEM-X - mission and products description 2.1.4.TerraSAR-X/TanDEM-X - description of the collected data 2.2.Aerial low-altitude UAV/VNIR observations 2.2.1.Platform and sensors used 2.2.2.Flight plans for the test floodplain lakes 2.2.3.UAS/RGB/Hyperspectral data processing chains and products 2.3.Auxiliary geographic data 3.Biebrza wetland monitoring and mapping with Sentinel-1 and TerraSAR-X/TanDEM-X imageries Marek Mróz, Magdalena Mleczko 3.1.Wetland mapping with Sentinel-1 time series 3.2.1.Sentinel-1 - data pre-processing 3.2.2.Surface Water Detection (SWD) and Water Extent Mapping (WEM) 3.2.3.Water Extent Mapping (WEM) 3.3.Wetland mapping with TerraSAR-X/TanDEM-X imageries 4.Floodplain lakes mapping using very high resolution RGB and superspectral VNIR images - qualitative methodological approaches Marek Mróz, Magdalena Mleczko, Sylwia Szporak-Wasilewska 4.1.Mapping from UAS platforms - main issues 4.2.Materials and methods 4.3.Results and discussion PART TWO - ECO-HYDROLOGICAL ISSUES 5.Effect of water level fluctuations on integration of hydrographie network in the Middle Biebrza floodplain Katarzyna Glińska-Lewczuk, Paweł Burandt 5.1.Hydrological connectivity in river-floodplain systems 5.2.The Biebrza River floodplain geology and structure 5.3.Hydrology of the Middle Basin of the Biebrza River 5.3.1.River flow 5.3.2.Water level fluctuations 5.3.3.Hydrophases 5.4.Conclusions 6.The eco-hydrological features of selected floodplain lakes in the Middle Basin of the Biebrza River Katarzyna Glińska-Lewczuk, Paweł Burandt 6.1.Material and methods 6.2.1.Water quality 6.2.2.Characteristics of aquatic vegetation within the studied oxbow lakes 6.3.Results 6.3.1.General characteristics of floodplain lakes in the Middle Biebrza Basin 6.3.2.Habitat conditions 6.3.3.Water quality in oxbow lakes 6.3.4.Vegetation in oxbow lakes 7.The ichthyofauna in selected floodplain lakes/oxbows - conditions for life and reproduction Roman Kujawa 7.1.Field research methodology and scope 7.2.Evaluation of the habitat conditions 7.3.Brief description of the species of fish caught in the analysed oxbow lakes