5:15 PM - 6:30 PM
[ACG23-P06] The inflow of hot spring heat impact on fish communities around estuaries in Beppu, Oita prefecture
Keywords:hot spring heat, fish community, around estuary, hot spring drainage
We sampled the fish using a small seine net in January 2015. Although the number of fish collected in four rivers was very small, Nile Tilapia and Opsariichthys platypus was collected in Hirata River and Haruki River, respectively. Hot spring drainage flow into these two rivers, however, there is a big difference in the water temperature near the river mouth in these two rivers. These results suggest the possibility that the difference in inflow of the hot spring heat affects the dominant species of the fish community near the estuary. In this presentation, we will discuss the inflow of hot spring heat impact on fish communities near the estuary with the result of the summer investigation.