Assessment of Fish Biomass and Distribution in a Nuclear Power Plant’s Water Intake Zone Using Acoustic and Trawl Methods

Animals, Journal Year: 2025, Volume and Issue: 15(7), P. 987 - 987

Published: March 29, 2025

The cooling water intake systems of coastal nuclear power plants are frequently clogged by marine organisms in the area. This study uses hydroacoustic (BioSonics DT-X, 199 kHz) and trawling methods (20 mm codend mesh size) to research fish spatiotemporal dynamics. Species composition, seasonal variations abundance, target strength were analyzed. Pearson's correlation analysis revealed a significant negative between depth resource density. Significant differences abundance biomass density observed among seasons stations. An dominant species showed that IRI (index relative importance) Collichthys lucidus was highest February 2023 (5736.54), while Harpadon nehereus had November (2309.17). distribution estimates from acoustic surveys biological highly consistent, demonstrating applicability reliability assessments. Through identification as well patterns within area, valuable data support can be provided for confirmation those prone clogging source. Moreover, it lays solid foundation development relevant protection work.

Language: Английский

Community Characteristics and Potential Risk of Nekton in Waters Adjacent to Ningde Nuclear Power Plant in Fujian, China

Biology, Journal Year: 2025, Volume and Issue: 14(5), P. 481 - 481

Published: April 27, 2025

The impact of bio-invasions and abnormal aggregations marine life on the safety cooling water systems in coastal nuclear power plants (NPPs) is significant cannot be overlooked. In this study, we conducted 12 consecutive monthly surveys from September 2022 to August 2023 waters near Ningde NPP Fujian, China, focusing nekton species composition, dominant species, abundance, biomass, diversity indices. We statistical analyses examine potential correlations between community structure these organisms environmental factors. recorded 120 that belonged 20 orders, 57 families, 92 genera, including 72 fish, 23 shrimp, 19 crabs, 6 cephalopods. Pearson redundancy showed pH, DIP, inorganic nitrogen were main factors driving observed temporal changes seawater intake area. also found May October peak period for abundance during time, there a high risk blocking system NPP. These results are practical significance managers prevent control clogging by organisms, data provide theoretical basis bioecological restoration management area around

Language: Английский

Analysis of the Distribution Characteristics of Jellyfish and Environmental Factors in the Seawater Intake Area of the Haiyang Nuclear Power Plant in China

Biology, Journal Year: 2024, Volume and Issue: 13(6), P. 433 - 433

Published: June 12, 2024

In recent years, there have been frequent jellyfish outbreaks in Chinese coastal waters, significantly impacting the structure, functionality, safety, and economy of nuclear power plant cooling water intake nearby ecosystems. Therefore, this study focuses on particularly near Shandong Peninsula. By analyzing abundance data, a Generalized Additive Model integrating environmental factors reveals that temperature salinity greatly influence density. The results show variations density among with higher densities areas. model explains 42.2% variance, highlighting positive correlation between (20–26 °C) density, as well impact (27.5–29‰). Additionally, ocean currents play significant role nearshore aggregation, site coordinates. This aims to investigate relationship blooms factors. obtained from provide data support for prevention control blockages systems, basis implementation monitoring measures plants.

Language: Английский