Abstract
In this study, we investigated i) relationship between habitat type and qualitative and quantitative characteristics of deposited sediment and (ii) the characteristics of deposited sediment and respiration activity of the sediment as determined by oxygen consumption rate in a floodplain of the Tagliamento River. Field observation indicated that C/N ratio and size of sediment increased in upstream-connected backwater and main stream, while habitats with high abundance of trees provided high density of fine particulate sediment (FPS) as well as high content of fine particulate organic matter (FPOM). We confirmed that the FPS density and FPOM content have strong correlation with dissolved oxygen consumption rate, suggesting that the oxygen consumption rate in water column is influenced by habitat type and quality and quantity of sediments.
