碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 102 / In this study, we analyzed thefishery data (1993-2011) from Fisheries yearbook-Taiwan area during 1993 to 2011 around water of Taiwan to investigate the influences of climatic indices(PDO, WPO, NPGO, SOI and Nino 3.4) and sea surface temperature. In the absence of reliable fishing effort data, can not estimate the advantages of fish catch per unit effor, or landing per unit effort amounts of data. A wavelet analysis and Pearson correlation analysis revealed that variations in climatic indices might have affected the abundance and composition of commercial fish species. The results of thisstudyare as follows:
1. The annual trends of the total catches on the waters around Taiwan showed the decreased trends, Mackerel, Jack mackerel, Auxis rochei.The commercial fish species showed the decreasing trends including Inshore squids, Golden trivially, White croaker, japanese butterfish, pomfret white, Red bigeye fish, Spanish Mackerel, Buccaneer anchovy, Black Pompano , Redeye round herring , Korean mackerel , mullet , Silver anchovy, etc.
2. The trophic level (TL) in the range of 2 to 4, also showed a decreasing trend,especiallythe species of TL less than 3 (mullet, black pomfret and Silver anchovy)
3. The WPO was not statistically significant with 26 commercial fish species. The significant association of 12, 16 and 14 fish species with the annual PDO, NPGO and ENSO showed a periodicity of multiple time scales, respectively.
4. And sea surface temperature showed a positive correlation of species are: Inshore squids, Common dolphinfish, Round scad, Auxis rochei, Buccaneer anchovy, Korean mackerel , Silver anchovy, etc.. Negatively related species are: White croaker, japanese butterfish, orbfish orbis, Red bigeye fish, Spanish Mackerel, Boarfish, Brown croaker, Triggerfish, Black Pompano , Korean mackerel, mullet, etc.
Keywords: around water of Taiwan, climatic indics, Trophic level, Sea surface temperature
| Identifer | oai:union.ndltd.org:TW/102NTOU5451020 |
| Date | January 2013 |
| Creators | Huang, Yu-Hsiu, 黃毓琇 |
| Contributors | Ming-An Lee, 李明安 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 67 |
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