碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 106 / Typhoon is an extreme weather event commonly found in Taiwam during summer. Accordimg to the statistics of Central Weather Bureau(CWB), Taiwan suffers an everage 6 typhoons per year. The disturbance of typhoon does not impact the terrestrial environment only but also affect the oceanographic environment and marine ecosystem substantially. Discussions on the interactions between typhoon disturbance and oceanographic environment change become an important subject in the recent decade as the frequency of extreme climate events increase. In the study, we collected the fishery datas and remotely-sensed oceanorgraphic data, including sea surface temperature (SST) and chlorophyll-a (Chl-a) concentration, before and after the SOUDELOR and MEGI typhoons. To explore how does the typhoon effect the catch mean trophic level (MTL) around Taiwan. The chlorophyll-a decline to 0.594 mg/m3 and the sea surface temperature decline from 30.15 ºC to 28.50 ºC and the mean trophic level was decline to 3.718 after SOUDELOR. After MEGI, the chlorophyll-a decrease to 1.038 mg/m3 and the sea surface temperature decline from 28.28 ºC to 27.24 ºC and the mean trophic level was decline to 3.608, The results show, the variation of mean trophic level of catch result from after typhoon the catch composition are different and the other one is the same catch composition but the different landing. besides, the mass of coarse fish will definitely masking the original treand on mean trophic level of catch treand.
| Identifer | oai:union.ndltd.org:TW/106NTOU5451026 |
| Date | January 2018 |
| Creators | Lin, Chi-Wei, 林奇緯 |
| Contributors | Liao, Cheng-Hsin, 廖正信 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 91 |
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