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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.author | 蔡天享 | zh_TW |
| dc.date.accessioned | 2021-07-01T08:14:52Z | - |
| dc.date.available | 2021-07-01T08:14:52Z | - |
| dc.date.issued | 1989 | |
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Yeh,S.Y.1981.Dyanmics of the demersal fish resources in the Sunda Shelf area of the South China Sea Ph.D.Dissertation,Univ.of Washington,Seattle,224p. Yeh,S.Y.1984.Standardization of fishing effort of the Taiwanese pair trawl fishery off northwestern Australia. INPFC Bull.,42:23-27. Yeh,S.Y.,L.J.Bledsoe,and L.L.Low.1982.A study on the species affinity groups of the groundfish communities in the Sunda Shelf area .Acta Oceanogeraphica Taiwanica,13:226-245. Yeh,S.Y.,and T.S.Chiu.1982.Standardization of fishing effort of the Taiwanese pair trawl fishery off northern Australia. Acta Oceanographica Taiwanica,13:215-225. Yeh,S.Y.,and H.C.Liu.1983.Geographic distribution of groundfish resources in the Sunda Shelf area of the South China Sea. Acta Oceanographic Taiwanica ,14:119-135. Yeh,S.Y.,L.L.Low.,and H.C.Liu.1981.Assessment on groundfish resources in the Sunda Shelf area of the South China Sea .Axta Oceanographic Taiwanica ,12:175-189. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/75716 | - |
| dc.description.abstract | 本論文根據台灣拖網漁船在中國東海南部陸棚作業的漁獲統計資料，探討將1974年至1981年投網次數資料轉換 (Translate）成拖網時間資料的方法，並引用Robson(1966）的方法，估計不同船型間的相對漁獲能力（Relative fishing Power.），藉以標準化名目漁獲努力量（Nominal fshing effort) ，並以標準化後之單位努力漁獲量（Catah per unit standardized effort , CPUE）做為魚群豐度指標（Index of abundance) ，討論本陸棚底棲魚類資源全魚種及五個主要魚種或種群（Species group) （海鰻、白帶魚、白口、柔魚和烏賊）之歷年豐度變化情形及其彼此間的變動關係，結果如下： 1．根據歷年來作業漁船的漁法（單拖或雙拖）及其總登錄噸數（Gross registered tonnage , GRT）的分佈情形，在中國東海南部陸棚作業的台灣拖網船可分為三類船型：(1）第一類船型：單拖100?150噸（2）第二類船型：單拖151?200噸（3）第三類船型：雙拖100?150噸。 2．根據1982年至1987年的拖網時間資料，推估得知，1974年至1981年三類船型在不同的每天投網數情形下，其平均每網拖網時間分別為（1）每天作業1至4網者：歷年來（1974年至1981年）第一、二類船型在2.50?3.14小時之間，第三類船型在2.50?3.01小時之間（2）每天作業5網者：第一類船型在2.50?3.21小時之間，第二類船型在2.50?3.14小時之間，第三類船型在2.50?3.19小時之間（3）每天作業6網者：第一類船型在2.45?3.16小時之間，第二類船型在2.48?3.09小時之間，第三類船型在2.35?3.00小時之間（4）每天作業7至8網者：第一類船型在2.25?2.92小時之間，第二類船型在2.38?2.98小時之間，第三類船型在2.35?3.00小時之間。 3．以第一類船型為標準船型，相對漁獲能力定為1.000其他船型相對於標準船型之相對漁獲能力分別為：(1)對全魚種而言，第二類船型為1.101，第三類船型為1.693(2）對海鰻而言，第二類船型為0.921，第三類船型為1.090(3）對白帶魚而言，第二類船型為0.976第三類船型為1.622(4）對白口魚而言，第二類船型為0.811，第三類船型為2.090(5）對柔魚而言，第二類船型為0.861，第三類船型為1.713(6）對烏賊而言，第二類船型為1.444，第三類船型為2.483。 4．全魚種CPUE從1974年的109kg/hour持續下降至1987年的42kg/hour 。 5. 白帶魚、海鰻、白口魚和全魚種歷年的豐度變化趨勢一致；而烏賊則和白帶魚歷年豐度變化呈顯著負相關。 | zh_TW |
| dc.description.provenance | Made available in DSpace on 2021-07-01T08:14:52Z (GMT). No. of bitstreams: 0 Previous issue date: 1989 | en |
| dc.description.tableofcontents | 摘要………………………………1 第一章 前言……………………………4 第二章 研究區域和資料來源……………7 一、研究區域………………7 二、資料來源………………8 第三章 漁獲努力量校正…………10 一、漁船船型特徵………………………10 二、投網網次與拖網時間之努力量轉換……………12 三、船型間相對漁獲能力…………………………15 四、標準化漁獲努力量及年間豐度變化……19 第四章 重要底棲魚種之年間豐度變化………22 一、白帶魚…………………23 二、海鰻…………………24 三、白口魚…………………25 四、柔魚類……………25 五、烏賊類………………26 第五章 討論與結論…………………29 一、努力量轉換……………………29 二、船型間相對漁獲能力…………30 三、努力量標準化………………30 四、魚群相對豐度分析………31 五、今後有待研究方向…………32 謝辭…………34 參考文獻………35 | |
| dc.language.iso | zh-TW | |
| dc.title | 中國東海南部陸棚臺灣拖網漁業之漁獲努力量標准化及重要底棲魚種豐度變化研究 | zh_TW |
| dc.title | Studies on the fishing effort standardization of Taiwanese trawl fisheries and the abundance trend of the major groundfish resoureces in the southern part of the East China Sea. | en |
| dc.date.schoolyear | 77-2 | |
| dc.description.degree | 碩士 | |
| dc.relation.page | 83 | |
| dc.rights.note | 未授權 | |
| dc.contributor.author-dept | 生命科學院 | zh_TW |
| dc.contributor.author-dept | 漁業科學研究所 | zh_TW |
| 顯示於系所單位： | 漁業科學研究所 | |
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