| 中文摘要 |
A.漁業資料分析：
本研究蒐集寶石珊瑚漁船之作業報表，建立電子資料庫。於2009年1至10月，作業船隻有54艘，累計漁獲量為2,790.2公斤。於1至10月間，漁獲努力量(船-日)於7月最高(937船-日)，並主要於A漁場作業(3,782船日，佔68%)。漁獲量於5月最高(725.4公斤)，亦以A漁場最高(2,059.0公斤，佔74%)。漁獲量之物種組成，以Momo珊瑚最多(有2,388.2公斤，佔85.6%)，其次為Miss珊瑚(183.3公斤，佔6.6%)。依商業分級分析，以蟲枝(fossilized)最多(有2,242.3公斤，佔80.4%)，活枝(alive)僅約4% (97.7公斤)。活枝珊瑚於E漁場有最高產量(50.8公斤，52%)，主要為Momo(58%)及Aka珊瑚(22%)。活枝珊瑚漁獲量與努力量(船日)無顯著相關。以活枝珊瑚出現範圍與漁獲努力量範圍之比率，估算活枝珊瑚的覆蓋率(coverage rate)約為33%。作業漁場及日數的限制可能壓縮風險較大漁場(C與D漁場)的作業空間。漁獲物組成以蟲枝居多，此反映非選擇性漁具的低效益特性，亦可反映現有作業水域活枝珊瑚比例，此結果或可提供漁業管理未來調整之參考。未來應繼續建立漁獲資料，另建議將產業之經濟分析列入研究計畫。
B.生物資料分析：
98年度共完成5次寶石珊瑚漁業觀察員採集樣本分析。完成白珊瑚以及阿卡珊瑚的外部形態以及水螅體、骨針等細微構造的描述。寶石珊瑚漁業混獲物主要包含四大類分別為石塊、非寶石珊瑚類冷水珊瑚、海綿，以及其他無脊椎動物，以石塊所佔比例最高，顯示寶石珊瑚漁業對底質會有一定程度的影響。臺灣周邊冷水珊瑚礁生態系缺乏研究，增加物種鑑定上難度，卻也增加記錄新種或是新記錄種的機會，本年度調查記錄了一新記錄種蟹類(Dynomene pilumnoides Alcock, 1899)。 |
| 英文摘要 |
A. Fishery data
This study is aimed to collect and maintain the catch and effort data of precious coral fishery in Taiwan, and accordingly preliminarily analyse the spatiotemporal pattern of operations. A total of 54 vessels with production of 2790.2 kg were recorded from January to October 2009. The fishing effort (vessel-day, ves-d) peaked at July (937 ves-d), and mainly located on designated fishing ground (DFG) A regions (3782 ves-d, 68%). The production peaked at May (725.4 kg) and also mainly located on DFG-A regions (2059.0 kg, 74%). The production by species dominated by Momo coral (2388.2, 85.6%), second by Miss coral (183.3, 6.6%). The production by commercial type dominated by fossilized type (2242.3, 80.4%), and alive type accounted for ca 4% (97.7 kg). The alive coral mainly located on DFG-E region (50.8 kg, 52%), and dominated by momo (58%) and aka (22%). The relationship between catch and effort showed insignificant correlation. The coverage rate of alive coral was calculated at 33%. The fishery operations on regions of DFG-C and D could be constrained by the restrictions of regulation for the Taiwan precious coral fishery. The fossilized corals are dominant in production which not only showed the low efficiency of non-selective gears in the fishery, but also showed the coverage rate of alive corals in the fishing regions. This may have implications for the revision of management measures in the future. We suggest carrying on collection of the catch and effort of precious coral fishery and in addition, should consider involving economic analysis in this project.
B. Biological data
In 2009, five times collections from precious coral fishery observers have been analyzed.? The morphology and detail structure, such as polyps and sclerites of Corallium konojoi, and Paracorallium japonicum have been described.? By catch from precious coral fishery can be divided in to four main categories, including rocks, non precious coral cold-water corals, sponges and other invertebrates, and rocks took the highest part of them, indicating this fishery would affect subtract in some degree.??? The study about cold-water corals ecosystem in the waters adjacent to Taiwan is not enough; hence, it increases the difficulty in identifying species from cold-water coral ecosystem.? However, this situation also enhances the probability of finding new species or newly record species.? In this year’s investigation, there is a newly record crab (Dynomene pilumnoides Alcock, 1899). |