Impacts of central-Pacific El Ni?o and physical drivers on eastern Pacific bigeye tuna

doi:10.1007/s00343-023-3051-3

IOCAS-IR > 海洋环流与波动重点实验室

	Impacts of central-Pacific El Ni?o and physical drivers on eastern Pacific bigeye tuna
	Lian, Peng1,2,3 ; Gao, Le 1,2,3
	2024-05-09
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	16
通讯作者	Gao, Le([email protected])
摘要	Bigeye tuna Thunnus obesus is an important migratory species that forages deeply, and El Ni & ntilde;o events highly influence its distribution in the eastern Pacific Ocean. While sea surface temperature is widely recognized as the main factor affecting bigeye tuna (BET) distribution during El Ni & ntilde;o events, the roles of different types of El Ni & ntilde;o and subsurface oceanic signals, such as ocean heat content and mixed layer depth, remain unclear. We conducted A spatial-temporal analysis to investigate the relationship among BET distribution, El Ni & ntilde;o events, and the underlying oceanic signals to address this knowledge gap. We used monthly purse seine fisheries data of BET in the eastern tropical Pacific Ocean (ETPO) from 1994 to 2012 and extracted the central-Pacific El Ni & ntilde;o (CPEN) indices based on Ni & ntilde;o 3 and Ni & ntilde;o 4 indexes. Furthermore, we employed Explainable Artificial Intelligence (XAI) models to identify the main patterns and feature importance of the six environmental variables and used information flow analysis to determine the causality between the selected factors and BET distribution. Finally, we analyzed Argo datasets to calculate the vertical, horizontal, and zonal mean temperature differences during CPEN and normal years to clarify the oceanic thermodynamic structure differences between the two types of years. Our findings reveal that BET distribution during the CPEN years is mainly driven by advection feedback of subsurface warmer thermal signals and vertically warmer habitats in the CPEN domain area, especially in high-yield fishing areas. The high frequency of CPEN events will likely lead to the westward shift of fisheries centers.
关键词	bigeye tuna central-Pacific El Ni & ntilde ocean heat content Argo explainable artificial intelligence (XAI) information flow o (CPEN)
DOI	10.1007/s00343-023-3051-3
收录类别	SCI
语种	英语
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:001220989500003
出版者	SCIENCE PRESS
WOS关键词	THUNNUS-ALBACARES ; HABITAT ANALYSIS ; YELLOWFIN ; DYNAMICS ; FISHERY ; OBESUS ; TEMPERATURE ; VARIABILITY ; ECOSYSTEM ; MODEL
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/185737
专题	海洋环流与波动重点实验室
通讯作者	Gao, Le
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
通讯作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Lian, Peng,Gao, Le. Impacts of central-Pacific El Ni?o and physical drivers on eastern Pacific bigeye tuna[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2024:16.
APA	Lian, Peng,&Gao, Le.(2024).Impacts of central-Pacific El Ni?o and physical drivers on eastern Pacific bigeye tuna.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,16.
MLA	Lian, Peng,et al."Impacts of central-Pacific El Ni?o and physical drivers on eastern Pacific bigeye tuna".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2024):16.