海洋渔业2025，Vol.47Issue(2)：163-174,12.
多时空尺度下初级生产力对鲣种群丰度动态变化的时滞影响
Time-lag effects of primary productivity on dynamics of Katsuwonus pelamis population abundance at multiple spatial and temporal scales
摘要
Abstract
Skipjack tuna Katsuwonus pelamis is the main target of purse seine tuna fisheries in the Western and Central Pacific Ocean,with population abundance influenced by marine environmental factors and their lagged effects.Exploring the time-lag relationship between primary productivity and population abundance can help elucidate its ecological driving mechanisms.This article selected the fishing log data of China's tuna seine fishing vessels from 2013 to 2020,based on three abundance indicators:fishing yield(catch),standardized catch per unit effort(CPUE)and fishing set(effort),and established distributed lag linear models(DLLM)of primary productivity-population abundance with chlorophyll a(chl-a).The results showed:There was a significant lag relationship between chl-a and three abundance indicators;when the study adopted the time scale of 1d,2d,3d,4d and 5 d,the lag time of K.pelamis population abundance in response to chl-a had no obvious change pattern;when selecting the spatial scales of 0.25°×0.25°,0.5°× 0.5°,1°× 1°,2° × 2°,3°×3°,4° × 4° and 5° ×5°,the lag time intervals for the impact of primary productivity on K.pelamis population abundance were 0 d,0-2 d,1-4 d,2-6 d,3-7 d,5-10 d and 7-11 d respectively.This study shows that primary productivity has a lagging effect on changes in K.pelamis population abundance,and the extent of the lagging effect is closely related to the size of the regional space.关键词
鲣/初级生产力/多时空尺度/时滞影响/分布滞后线性模型Key words
Katsuwonus pelamis/primary productivity/multiple spatial and temporal scales/time-lag effects/distributed lag linear models分类
农业科技引用本文复制引用
王禹程,周成,郭绍健,胡媛媛,倪泳一,吴峰..多时空尺度下初级生产力对鲣种群丰度动态变化的时滞影响[J].海洋渔业,2025,47(2):163-174,12.基金项目
国家重点研发计划(2023YFD2401305) （2023YFD2401305）
农业农村部全球渔业资源调查监测评估专项(D-8025-24-5001) （D-8025-24-5001）
