Contrasting physical mechanisms of yellowfin tuna fluctuations between the western and eastern Indian Ocean

doi:10.1007/s00343-023-2330-3

IOCAS-IR > 海洋环流与波动重点实验室

	Contrasting physical mechanisms of yellowfin tuna fluctuations between the western and eastern Indian Ocean
	Lian, Peng1,2,3 ; Gao, Le 1,2,3,4
	2024-05-09
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	12
通讯作者	Gao, Le(gaole@qdio.ac.cn)
摘要	As an economically critical pelagic migratory species, yellowfin tuna (Thunnus albacores, YFT) is very sensible to physical and environmental conditions, such as sea surface temperature (SST), ocean heat content (OHC), and the mixed layer depth (MLD). We investigated the impact of SST, OHC, and MLD on fluctuations of YFT catch in the western/eastern Indian Ocean using the long time series of 63-year environmental and YFT datasets. We found that the impact of SST on YFT was heavily overestimated in the past, and MLD plays a more critical role in the YFT catch fluctuation. When the MLD deepens (>34.8 m), SST was more influential in predicting the catches of YFT than OHC in the western Indian Ocean, and OHC was more critical to YFT than SST in the eastern Indian Ocean. However, when the MLD shallows (<34.8 m), MLD was more vital to predict the catch per unit effort (CPUE) of YFT than SST/OHC in the western. After 2000, there was an asynchronous pattern of YFT CPUE induced by higher frequency variations and ocean hiatus of SST/OHC signals in the western and eastern Indian Oceans basins. The impact of the subsurface hiatus may induce the decrease of YFT in the eastern Indian Ocean. The above findings clarified a non-stationary relationship between the environmental factors and catches of YFT and provided new insights into variations in YFT abundance.
关键词	yellowfin tuna Indian Ocean sea surface temperature (SST) ocean heat content (OHC) mixed layer depth (MLD) hiatus
DOI	10.1007/s00343-023-2330-3
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42090044] ; National Natural Science Foundation of China[42376175] ; National Natural Science Foundation of China[U2006211] ; Marine S&T Fund of Laoshan Laboratory (Qingdao)[LSKJ202204302]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:001220989500004
出版者	SCIENCE PRESS
WOS关键词	CLIMATE VARIABILITY ; THUNNUS-ALBACARES ; BLUEFIN TUNA ; FISHERIES ; DIPOLE
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/185761
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.Inst Oceanol, Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Lab Ocean Dynam & Climate, Laoshan Lab, Qingdao, 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. Contrasting physical mechanisms of yellowfin tuna fluctuations between the western and eastern Indian Ocean[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2024:12.
APA	Lian, Peng,&Gao, Le.(2024).Contrasting physical mechanisms of yellowfin tuna fluctuations between the western and eastern Indian Ocean.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,12.
MLA	Lian, Peng,et al."Contrasting physical mechanisms of yellowfin tuna fluctuations between the western and eastern Indian Ocean".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2024):12.