上海海洋大学学报2025，Vol.34Issue(2)：382-393,12.DOI:10.12024/jsou.20240404524
黑潮-亲潮交汇区中上层渔获量变动对涡旋的响应
Effects of eddies on catch in mid-pelagic species in the Kuroshio-Oyashio confluence region
摘要
Abstract
The effect of marine mesoscale processes on spatial variation of fisheries is an important part of fishery resources assessment.In order to clarify the response relationship between fishery resource abundance in the Kuroshio-Oyashio confluence region(145°E-165°E,35°N-45°N)and mesoscale eddies,this study utilized data from mid-pelagic trawl catches and satellite altimetry collected during research cruises in the Northwest Pacific from June to August 2021-2023 by the"Songhang"of Shanghai Ocean University research vessel.The study investigated the relationship between catch density and environmental factors as well as eddies.The results indicate a significant spatial correlation between sea surface temperature,chlorophyll-a mass concentration,and the distribution of fishing density in the fishing grounds.These factors predominantly influence the resource abundance of middle and pelagic fishery.The average fish catch yield is higher in the sea area north of 40°N compared to those south of it.Within 1-2 times the radius of cyclonic eddies,there is a notably positive abnormality in chlorophyll-a mass concentration.Conversely,in anticyclonic eddies,there is a positive abnormality in chlorophyll-a mass concentration in the northeastern part and reduced mass concentrations elsewhere.Within a radius of two times the eddy,fish aggregation was favored to the south of the cyclonic eddy and to the north of the anticyclone.Although the cyclonic eddies are nutrient eddies,their accompanying upwelling leads to low water temperatures,which are not favorable for fish aggregation.Marine organisms in the Kuroshio-Oyashio confluence region tend to aggregate in the southern part of the cyclonic eddy and the northern part of the anticyclonic eddy.This study can provide a scientific basis for short-term fishery forecasting and prediction of the center of gravity of the fishery in the Northwest Pacific Ocean,while the fishery changes caused by the inter-annual dynamic difference of the Kuroshio Current axis still need to be further investigated.关键词
中尺度涡/渔场/资源丰度/环境变化/黑潮-亲潮交汇区Key words
mesoscale eddy/fishing grounds/resource abundance/environmental change/Kuroshio-Oyashio confluence region分类
农业科技引用本文复制引用
苏日昇,魏永亮,唐泽艳,庞邓连,张春玲..黑潮-亲潮交汇区中上层渔获量变动对涡旋的响应[J].上海海洋大学学报,2025,34(2):382-393,12.基金项目
国家自然科学基金(41976174,41606196) （41976174,41606196）
农业农村部全球渔业资源调查监测评估(公海渔业资源综合科学调查)专项(D-8025-23-1002) （公海渔业资源综合科学调查）
