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題 名 | Preliminary Study on Community Structure by Bottom Trawler in the Northern Slope of the South China Sea=南海北部小區域陸坡拖網漁場主要魚種社群結構之研究 |
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作 者 | 李嘉林; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 22:2 1995.06[民84.06] |
頁 次 | 頁101-111 |
分類號 | 439.21 |
關鍵詞 | 深海; 社群結構; 中國南海; Deep-water; Community structure; South China sea; |
語 文 | 英文(English) |
中文摘要 | 本研究係利用水產試驗所"水試一號"試驗船於1994年4月25日至1995年4月23日間,於19°20'N, 113°55'E-114°25'E,水深400至1050公尺,實施13網次深海底拖網漁撈試驗,漁獲種類57種。其中線性生物量(Linear biomass),魚類大於20.0、蝦類大於5.0,且於兩測站或兩測站以上同時出現者計有:12主要魚類佔總魚種漁獲量的82.92%,9主要蝦種約佔總蝦種漁獲量的99.1%,並據以進行各項分析工作。調查結果摘述如後:(1)各測站之夏農,魏能歧異度指數與深度有顯著的關係且隨深度的增加而減少。(2)以社群分析調查各測站結果:主要魚種組成大致可區分為4個群落,蝦種組成則可分為3個群落。依魚種別及蝦種別之對數線性生物量亦可將所調查之測站區分為2及3個群落。 |
英文摘要 | To understand the community structure of demersal animals, 13 deep-water bottom trawl operations were conducted from 25 April 1994 to 23 April 1995 along the transect at depths of 400-1050 meters, located at 19°20'N-20°00'N, 113°55'E-114°25E-114°25'E, by the R/V Fishery Rescarcher 1. A total of 12major fish species occupying 87.1% of the total collected prawns were recorded. These species were in at least 2 collection stations; the sum value of the linear biomass was over 20.0 for each fish and 5.0 for each prawn. The relationship between the values of Shannon-Wiener's index (wighted by linear hiomass) and the depths was significant (p<0.05); the index value decreased with increasing depth. Using the Unweighted Pair Group Method (UPGMA) alsorithm and Bray-Curtis dissimilarity values, the 12 fish species and 9 prawn species were classified into 4 and 3 major groups and all stations into 2 and 3 station groups, respectively. |
本系統中英文摘要資訊取自各篇刊載內容。