碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 103 / 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. The Penghu waters are one of the important areas for the squid fisheries in Taiwan, and also the area where typhoons frequently strike. The influence of typhoon events on the oceanographic environment change and squid fisheries activities thus is worth to explore. In the study, we collected the squid fishery data from sample fishing vessels and used the remotely-sensed oceanographic data, including sea surface temperature (SST) and chlorophyll-a (Chl-a) concentration, before and after the arrivals of typhoons. The SST decreased signigicantly while the catch per unit effort of sample-vessels increased significantly in the first week after the arrivals of typhoons. The Chl-a concentration increased numerically in the first week of arrival for the most of the typhoons analyzed. At Kaemi and Fung-wong Typhoons, however, the Chl-a concentration in the first week after the arrival decreased. The SST decrease could last until the second week after the arrival of typhoon. The location of squi-fishery activities primarily aggregated at edge of upwelling and concurrently changed with upwelling changes after the arrival of typhoon. The decrease of SST and increase of Chl-a might come from the disturbance of typhoon that increases the upwelling extent, which, in turn, affects the spatial and temporal variations of squid fishery.
| Identifer | oai:union.ndltd.org:TW/103NTOU5451011 |
| Date | January 2015 |
| Creators | Lin, Jia-Rong, 林佳融 |
| Contributors | Lu, Hsueh-Jung, Huang, Shiang-Lin, 呂學榮, 黃祥麟 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 59 |
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