碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 107 / This study developed an empirical habitat suitability model for identifying the optimal habitat of albacore tuna in the South Atlantic Ocean (SAO) by using multisatellite remote sensing data and Taiwanese longline fisheries data between 2009 and 2015. Ageometric mean model with three environmental variables is suggested to be appropriate for explaining the habitat variance of albacore in the SAO. A monthly albacore mean catch per unit effort (CPUE) of larger than 35 individuals/1,000 hooks occurred from April to August and was distributed over 30–40°S. The optimal range of environmental variables in the sea surface temperature, sea surface salinity, and sea surface chlorophyll-a concentrationfor the habitat of albacore are suggested to be approximately 15-20°C, 33.8-35.6 psu, and 0.31-0.61mg/m3, respectively. We discovered a significant positive relationship between the suitable habitat area and nominal CPUE of albacore in the SAO (r = 0.912). Overall, frontal structures play a major role in the stimulation of potential albacore habitats.
| Identifer | oai:union.ndltd.org:TW/107NTOU5451020 |
| Date | January 2019 |
| Creators | Yu, Yi-Yin, 尤薏茵 |
| Contributors | Lee, Ming-An, 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 | 46 |
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