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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39451

Title: Effects of climate variability and climate change on the fishing conditions for grey mullet (Mugil cephalus L.) in the Taiwan Strait
Authors: Kuo-Wei Lan
Ming-An Lee
Chang Ik Zhang
Pei-Yuan Wang
Long-Jing Wu
Kuo-Tien Lee
Contributors: 國立臺灣海洋大學:環境生物與漁業科學學系
Date: 2014-09
Issue Date: 2016-12-12T08:58:03Z
Publisher: Climatic Change
Abstract: Abstract:Grey mullet (Mugil cephalus L.) is one of the most important commercial species of fish in the coastal fisheries of Taiwan. In this study, we analyzed the long-term (1967–2009) records of grey mullet catch per unit effort (CPUE) in the Taiwan Strait (TS) to investigate the influences of climatic indices on the annual catch of grey mullet at multiple timescales. A wavelet analysis revealed that variations in climatic indices, namely the Pacific Decadal Oscillation (PDO), the Oceanic Niño Index, and sea surface temperatures (SSTs) might have affected the abundance and migration behavior of grey mullet in the TS in winter. The CPUE of grey mullet showed significant high correspondence with the annual PDO index (R2 =0.82, p <0.01). The results suggested that the PDO affects the migration of grey mullet, but that increases in SSTs are a more important influence on the decreased catches of grey mullet after 1980. Mean SSTs increased 1.01 °C at the Chang-Yuen Rise in the TS from 1984 to 2009. The 20 °C isotherms in the TS in the winter also shifted from 23–24°N in 1958–1978 to north of 25°N after 1998. The fishing grounds of grey mullet also shifted to the north following changes in the 20 °C isotherm in the TS.
Relation: 126(1), pp.189–202
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39451
http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39452
Appears in Collections:[環境生物與漁業科學學系] 期刊論文

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