Habitat Suitability of Chub Mackerel Scomber japonicus in the East China Sea based on Vertical Water Temperature
NI Yongyi1, WEN Jian2, LI Yikai2, YU Wei2,3,4,5, WU Feng2,3,4,5
1. Ping TAI RONG Ocean Fishery Group Co., Ltd., Zhoushan 316100, China; 2. College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China; 3. National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China; 4. Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China; 5. Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs, Scientific Observing and Experimental Station of Oceanic Fishery Resources, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China
Abstract：The impact of climate variability on the habitat of chub mackerel Scomber japonicas, an economically important pelagic fish species, can be exploited to provide scientific references for resources management. In this study, the habitat suitability index (HSI) on the fishing groundof chub mackerel was calculated in the East China Sea based on the environmental data of vertical water temperature at depths of 2.5 m, 25.0 m and 50.0 m and the Pacific decadal oscillation (PDO) index from 1977 to 2015. The spatio-temporal distributions of potential habitat of chub mackerel were compared among the different phases of PDO. The results showed that the anomalies of water temperature at different depths were significantly positively correlated with the PDO index. During the cold PDO, the anomalies of water temperature at different depths tended to be high, the range of suitable areas of water temperature tended to be more, the ratio of suitable areas of water temperature at 2.5 m and 50.0 m was obviously higher than that during the warm PDO, the ratio of unsuitable areas of water temperature at 2.5 m was significantly lower than that during the warm PDO, and the gravity center of the suitable index of water temperature at different depths shift northwestward. Compared to the warm PDO, the habitat suitability and the ratio of suitable habitat were higher, the ratio of unsuitable habitat was lower, the longitudinal gravity center of suitable habitat shift westward and the latitudinal gravity center of suitable habitat shifted northward during the cold PDO. The findings indicate that the warm and cold PDO regime shift yield significant impacts on variations in habitat distribution of chub mackerelin the East China Sea by changing the vertical water temperature on the fishing ground.
倪泳一, 温健, 李宜锴, 余为, 吴峰. 基于垂直水温的中国东海日本鲭生境适宜性分析[J]. 水产科学, 2025, 44(2): 264-273.
NI Yongyi, WEN Jian, LI Yikai, YU Wei, WU Feng. Habitat Suitability of Chub Mackerel Scomber japonicus in the East China Sea based on Vertical Water Temperature. Fisheries Science, 2025, 44(2): 264-273.
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2025, Vol. 44 
