Acoustic investigation of fishery resources in Guanting Reservoir

Abstract

This project uses acoustic methods to conduct a comprehensive survey of the fishery resources of the Guanting Reservoir. It uses the “Zigzag” survey route based on the actual situation of the reservoir, and uses the scientific fish finder (EK80, Simrad, Norway) as the main survey equipment. Post-processing software (Echoview, Myrix, Australia) analyzes the amount and distribution of biological resources. Statistical analysis of the existing reservoir resources and the spatial distribution of resource density showed that the fishery resources in the central part of the reservoir area are relatively high, the fishery resources in the waters near the dam in the southern reservoir area are second, and the northernmost fishery resources in the northern reservoir area. Resource Fengdu is relatively small. According to the analysis results of acoustic data, combined with the situation of biological sampling, various types of resources are also obtained. This survey provides basic data for the management of reservoir fishery resources and the formulation of enhancement and release plans, and provides a scientific basis for protecting the ecological resources and environment of the Guanting Reservoir.