頁籤選單縮合
題 名 | 東海南部臺灣單拖漁船漁獲組成與群聚指標之研究=Catch Composition and Community Indicators Based on Logbooks of Taiwanese Otter Trawlers Fished in the Southern Part of the East China Sea |
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作 者 | 田士金; 林翰飛; 吳繼倫; | 書刊名 | 水產研究 |
卷 期 | 16:1 2008.06[民97.06] |
頁 次 | 頁17-28 |
分類號 | 439.23 |
關鍵詞 | 東海; 單拖漁船; 漁獲組成; 群聚指標; East china sea; Otter trawlers; Catch composition; Community indicator; |
語 文 | 中文(Chinese) |
中文摘要 | 為探討東海南部海域底棲魚類資源之長期變化,本研究根據 1980 年代台灣單拖漁船之作業日誌及實地訪問漁船船長紀錄等資料,利用比對分析法,擷取以底拖漁法作業之單拖日誌資料部份,以為東海南部海域底棲魚類資源優勢種之選定,及其後續群聚指標計算之依據。結果顯示,東海南部底棲資源之優勢種為:烏賊 (Sepia spp.)、柔魚 (Loligo spp.)、蝦類 (Penaeus spp.)、白帶 (Trichiurus spp.)、海鰻 (Muraexesox spp.)、狗母 (Sauruda spp.)、白口 (Argyrosomus argentatus) 及白鯧 (Pampus argenteus)。多樣性指標 (diversity indicator) 年間呈現稍微遞減的趨勢。以正典變值分析法 (Canonical Variate Analysis) 研析,顯示第一正典變數與多樣性指標間年間變動趨勢相似。第一與第二正典變數在二維平面的分佈特性,能有效反應群聚魚種間的組成特性。 |
英文摘要 | This study was based on logbooks of Taiwanese otter trawlers fished in the southern part of East China Sea in conjunction with operation information obtained from fishing captains. Catch data of bottom otter trawl in the 1980s were then separated and used for investigating yearly dominant species and community indicators of groundfish resources.Yearly dominant species were: cuttle fish (Sepia spp.), squid (Loligo spp.), shrimp (Penaeus spp.), hair tail (Trichiurus spp.), sea eel (Muraexesox spp.), lizard fish (Sauruda spp.), white croaker (Argyrosomus argentatus) and white pomfret (Pampus argenteus); diversity indices were also obtained and indicated a slightly downward trend toward late 1980s. Indicators as first canonical variate, which appeared a similar trend as those of diversity indices, and second canonical variate were also provided in this study. A two dimensional plot of these two canonical variates can provide trends of not only the composition of components but also the standardized CPUE trends of its components. |
本系統中英文摘要資訊取自各篇刊載內容。