DSpace 集合:http://scholars.ntou.edu.tw/handle/123456789/2012024-03-29T13:48:07Z2024-03-29T13:48:07ZModeling of swordtip squid (<i>Uroteuthis edulis</i>) monthly habitat preference using remote sensing environmental data and climate indicesVayghan, Ali HaghiRay, AratrikaMondal, SandipanLee, Ming-Anhttp://scholars.ntou.edu.tw/handle/123456789/247172024-03-06T03:51:35Z2024-01-01T00:00:00Z標題: Modeling of swordtip squid (<i>Uroteuthis edulis</i>) monthly habitat preference using remote sensing environmental data and climate indices
作者: Vayghan, Ali Haghi; Ray, Aratrika; Mondal, Sandipan; Lee, Ming-An
摘要: Understanding the spatial arrangement of species in maritime settings necessitates the study of oceanography. Hence, doing a study on the correlation between oceanography and species dispersion is imperative, considering the impacts of global climate change. The study used a generalized additive modeling approach to analyze the influence of oceanographic conditions on the distribution of swordtip squid in northeastern Taiwan, integrating fishing data, climatic oscillation and oceanography. Among seven oceanographic characteristics, bottom sea temperature (SSTB), sea surface height (SSH), sea surface chlorophyll (SSC), and sea surface temperature (SST) showed significant influence in generalized additive model (GAM) analysis (combined deviance explained: 40.30%). The monthly catch rate of swordtip squid is influenced by six climatic oscillations, with the Pacific Decadal Oscillation having the most significant impact, accounting for 31% of the distribution, followed by the North Pacific Gyre Oscillation at 10.8% and the Western Pacific Oscillation at 6.05%. From 2015 to 2019, the main areas for squid fishing were situated in the northeastern waters of Taiwan, precisely within the geographical coordinates of 25 degrees N to 28 degrees N and 121.5 degrees E to 125 degrees E. This study provides crucial insights for managing swordtip squid fisheries in Taiwan's northwest waters, highlighting the importance of incorporating oceanographic conditions relating to climate change information into decision-making to protect global ocean fisheries and their dependent communities.2024-01-01T00:00:00ZComparison of Abundance and Structure of Larval Fish Assemblages between Autumn and Spring in the Waters Surrounding Taiwan Bank, Western North PacificHsieh, Hung-YenLee, Ming-AnChiu, Wei-LunMeng, Pei-Jiehttp://scholars.ntou.edu.tw/handle/123456789/247112024-03-06T03:51:34Z2024-01-01T00:00:00Z標題: Comparison of Abundance and Structure of Larval Fish Assemblages between Autumn and Spring in the Waters Surrounding Taiwan Bank, Western North Pacific
作者: Hsieh, Hung-Yen; Lee, Ming-An; Chiu, Wei-Lun; Meng, Pei-Jie
摘要: The fluctuations in both time and space of larval fish assemblages in relation to hydrographic characteristics in the waters surrounding Taiwan Bank were studied in October 2021 (autumn) and March 2022 (spring). Throughout the study period, we identified a total of 149 taxa of fish larvae, encompassing 96 genera and 71 families. Engraulis japonicus, Diaphus slender type, unidentified Gobiidae, Apogon sp., unidentified Clupeidae, and Benthosema pterotum were the six dominant taxa and together constituted 47.39% of the total catch. There were no notable temporal variations observed in the abundance of fish larvae, but the species number of fish larvae was greater in spring than in autumn. Significant variations in species composition were observed between the different cruises, and the cluster analysis unveiled a distinct temporal structure of the assemblages of fish larvae. The dynamics of the prevailing currents induced by seasonal monsoons contribute significantly to the transportation of fish larvae. The distribution of fish larvae showed a good association with hydrographic characteristics, where seawater temperature and salinity emerged as the primary explanatory factors influencing the composition of larval fish assemblages in the waters surrounding Taiwan Bank. While the increased influx of nutrients from upwelling ensures abundant food availability, the hydrographic conditions may not be suitable for every fish larva.2024-01-01T00:00:00ZImpact of climatic oscillations on marlin catch rates of Taiwanese long-line vessels in the Indian OceanMondal, SandipanRay, AratrikaOsuka, Kennedy EdeyeSihombing, Riah IrawatiLee, Ming-AnChen, Yu-Kaihttp://scholars.ntou.edu.tw/handle/123456789/247032024-03-06T03:51:31Z2023-01-01T00:00:00Z標題: Impact of climatic oscillations on marlin catch rates of Taiwanese long-line vessels in the Indian Ocean
作者: Mondal, Sandipan; Ray, Aratrika; Osuka, Kennedy Edeye; Sihombing, Riah Irawati; Lee, Ming-An; Chen, Yu-Kai
摘要: This study explored the influence of climatic oscillations on the striped, blue, and silver marlin catch rates in the Indian Ocean by using logbook data from Taiwanese large-scale fishing vessels and climate records from 1994 to 2016. Only the Madden-Julian oscillation (MJO) and the subtropical Indian Ocean dipole (SIOD) had immediate effects on the striped and silver marlin catch rates. The positive and negative phases of the IOD at the lags of 7 and 3 years corresponded to increased and decreased catch rates, respectively, for both the striped and blue marlin, contrasting to the reverse pattern for the silver marlin. Similarly, all three marlin species experienced decreased and increased catch rates respectively during the positive and negative phases of the Pacific decadal oscillation. The striped and blue marlin catch rates decreased and increased during the positive and negative phases, respectively, of the SIOD and MJO with various lags. Our results suggest that the impacts of climatic oscillations on fish species are crucial for policymakers and coastal communities for managing marine resources, forecasting changes in marine ecosystems, and developing strategies to adapt to and mitigate the effects of climate variability.2023-01-01T00:00:00ZRationalizing Taiwan's climate action based on oceans: ineffective governance, aspiring international participation, unrealized universal values, and a new window of blue carbon ecosystem measureTseng, Hui-Yi KatherineKao, Shih-MingTseng, Huan-Shenghttp://scholars.ntou.edu.tw/handle/123456789/246942024-03-06T02:05:13Z2023-01-01T00:00:00Z標題: Rationalizing Taiwan's climate action based on oceans: ineffective governance, aspiring international participation, unrealized universal values, and a new window of blue carbon ecosystem measure
作者: Tseng, Hui-Yi Katherine; Kao, Shih-Ming; Tseng, Huan-Sheng
摘要: Characterized by unique practices of self-imposed voluntary commitment, the formulation of Taiwan's climate action has been informed by the logic of appropriateness, which is norm-guided without regard to consequences. However, ineffective governance exhibited in the gap between governance incapability and overcommitted contribution, aspiring international participation, and realization of universal values hindered by a developmentalism mindset altogether reify that Taiwan's climate action has turned out to be an unrealistic ideal. It requires due consideration of socially constructed roles and matching obligations (the appropriateness concern) on the one hand, and promulgation of actions made upon rational choice along with well-defined interests (calculation of consequences) on the other hand, to deliver Taiwan's voluntary commitments while living up the name and substance of an earth citizen. Taiwan's effort at developing the blue carbon ecosystem (BCE) measure may open a new window of opportunity, whereby a paradigm shift in transforming the appropriateness logic to the appropriateness-consequence compound is discernible. The key lies in integrating the developmentalist drive for growth and the rising environmentalist demand while engaging, substantially and extensively, members of those affected communities with more accessible and sustainable financing mechanisms.2023-01-01T00:00:00Z