生态学报2024，Vol.44Issue(10)：4231-4243,13.DOI:10.20103/j.stxb.202305171043
典型气候事件对浙江近海底层鱼类时空分布的影响
Effects of typical climate events on spatio-temporal distribution of bottom fish in the coastal waters of Zhejiang
摘要
Abstract
Climate change has various impacts on marine ecosystems.As the main body of marine life,the response of fish to climate change is a key factor in exploring the effects of typical climate events on marine ecosystems.Based on the 2013-2022 bottom trawl fishery resource survey data in the coastal waters of Zhejiang,by incorporating ocean environment data such as the Ocean Nino Index(ONI),Sea Surface Temperature(SST),Sea Surface Temperature Anomaly(SSTA),and Chlorophyll a(Chl-a),this study used wavelet functions and correlation analysis to explore the impact of typical climate events such as El Nino and La Niña on the biomass and spatio-temporal distribution of bottom fish in the coastal waters of Zhejiang.The results showed that the bottom-layer fish biomass in the coastal waters of Zhejiang was highly positively correlated with SST and Chl-a(P＜0.01).During the El Nino and La Niña periods,the biomass in the spring and autumn was lower than that in normal years.The biomass in the spring of normal years and La Niña events had significant differences(P＜0.05),and the biomass in the autumn of normal years and El Niño events had extremely significant differences(P＜0.01).The cross-wavelet analysis of ONI and ocean environmental factor indices found that the SST and Chl-a in the coastal waters of Zhejiang demonstrated different frequency domain synchronization and correlation with typical climate events:ONI and SST exhibited frequency domain synchronization with a temporal locality of 2-3.9 months.SST lagged behind ONI by 3 months.ONI and Chl-a exhibited frequency domain synchronization with a temporal locality of 1.7-3 months.Chl-a and ONI were positively correlated.ONI and biomass exhibited frequency domain synchronization with a temporal locality of 3-3.6 months.Biomass lagged behind ONI by 3 months.There was no evident frequency domain synchronization between ONI and SSTA during the research period.In the spring,compared with normal years,the overall distribution of fish during the El Niño period tended to be northward.During the El Niño period in autumn,the overall distribution of fish moved southward,but during the La Niña period,it moved northward.These two typical climate events not only affected the latitudinal distribution of fish communities but also affected the speed at which fish migrated closer to the shore.These typical climate events can affect the spatio-temporal distribution of bottom layer fish in the coastal waters of Zhejiang by affecting environmental factors such as SST.关键词
气候变化/尼诺指数/浙江省/生物量/近海Key words
Climate change/Nino Index/Zhejiang Province/biomass/offshore引用本文复制引用
王春丽,陈峰,蒋日进,张洪亮,朱文斌,朱凯..典型气候事件对浙江近海底层鱼类时空分布的影响[J].生态学报,2024,44(10):4231-4243,13.基金项目
国家重点研发计划"蓝色粮仓科技创新"专项(2019YFD0901204) （2019YFD0901204）
浙江渔场渔业资源监测调查(HYS-CZ-202314) （HYS-CZ-202314）
浙江省公益技术应用研究项目(LGN21C190005) （LGN21C190005）
