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General Session 4: Marine environment, ecosystem & sustainability |
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Modelling essential fish potential habitat for acanthopagrus schlegelii in the coastal waters off Western Taiwan for the spawning season.
GS4-33-S
Shengyuan Teng* , National Taiwan Ocean University
Ming-An Lee, National Taiwan Ocean University
Nan-Jay Su, National Taiwan Ocean University
Kuo-Wei Lan, National Taiwan Ocean University
Yi Chang, National Cheng Kung University
Lung-Ching Wu, Fisheries Research Institute, Council of Agriculture
Presenter Email: yuan22365041@hotmail.com
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| Black Seabream (Acanthopagrus schlegelii) is one of the most important commercial species in the coastal fisheries of Taiwan. This aims to understand for fishing activity of gillnet fishery and community structure of fishery resources in coastal waters off western Taiwan. In this study, we collected logbook of sampling gillnet vessel, environmental data (i.e. Sea Surface Temperature, chlorophyll-a, sediment and depth) and data of voyage data recorder. We also investigated abundance and spatial distribution of hot spot for species that regularly released in recent years, and analyzed annual variation on community structure of fishery resources for species. Through ArcGIS software, spatial distribution of black seabream showed widespread in each season. However, the range of CPUE is 1.58-2.16 kg/vessel/day in each season. For black seabream, mainly distributed in coastal waters of Chianan but high CPUE concentrated in the coastal waters of Nanliao Fishing Port to Yuanli Fishing Port in first and second quarter. In addition, Habitat Suitability Index (HSI) model showed that black seabream have high sensitivity to the habitat changes in its ocean environment. For the second quarter, distribution of HSI value is widespread and concentrate in the coastal waters of Yunlin and Chiayi in third and fourth quarter. For the future, results from this study could be used to understand the impacts on the environment, habitat and community structure of fishery resources, and provide suggestions for planning management strategy. |
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