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題 名 | 臺灣南、北地區紅樹林區魚種組成之比較=Comparison of Species Compositions of Fishes in the Mangrove Creeks of Northern and Southern Taiwan |
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作 者 | 郭世榮; 邵廣昭; | 書刊名 | 嘉義技術學院學報 |
卷 期 | 60 1998.10[民87.10] |
頁 次 | 頁99-115 |
分類號 | 387.105 |
關鍵詞 | 群聚生態; 魚類相; 紅樹林; 種類組成; Community ecological; Fish fauna; Mangroves; Species composition; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究係自1996年2月至1997年2月止,以待袋網每二個月在本省北部的竹圍、新 豐、竹南與南部的布袋、北門、四草之紅樹林潮溝內,從事魚種組成之比較研究。研究期 間,共有50及49種魚類分別在北部與南部之紅樹林區被記錄到,其中只有20種魚類共 同出現在此兩地區。南、北兩地每次所採獲魚類的種數並沒有差異,兩地魚種之組成均以 重要經濟性的幼魚為主。南部地區魚類群聚的歧異度較北部地區為大,但每次所採獲的個 體數及重量上,北部地區較南部地區為高。在顯著魚種變化方面,北部地區大部份時間, 以大鱗��(Liza macrolepis)與前鱗��(Liza affinis)等二種魚類最為顯著,而南部地區的 顯著種隨月份不同而有所更動。聚類及空間排序分析的結果,顯示魚類群聚明顯分成南 (熱 帶地區 )、北 (亞熱帶地區 ) 二群。莫三鼻克吳郭魚 (Oreochromis mossabicus)、大鱗�� 、前鱗�僱奶T種魚類可作為區分南、北兩地魚類群聚結構差異的主要魚種。海流的型式與冬 天的低水溫兩因素,應是決定本省南、北兩地紅樹林區魚種組成不同的主要原因。 |
英文摘要 | Fish communities occurring in the subtropical mangrove creeks and the tropical mangrove creeks were studied in Taiwan bimonthly from February 1996 to February 1997 using fyke nets. A total of 50 and 49 fish species was collected from the northern and southern creeks, respectively and only 20 species were present in both regions. No significant difference in species number per netting was detected between the two regions. However, the individual number and biomass were greater in the northern creeks than in the southern creeks. In the northern creeks, a clear pattern of temporal variations in community structure was observed. While Liza macrolepis and Liza affinis typified in winter and spring, a number of species codominated in summer and fall. In the southern creeks the communities were always characterized by a number of species and their dominance varied from month to month. Oreochromis mossambicus, Liza macrolepis and Liza affinis were good discriminators of the community structures between the two regions. Analyses of classification and ordination separated the community structures into northern group and southern group, but the structures collected from the southern creeks were far more widely dispersed than from the northern creeks. It is likely that the northern and southern mangrove creeks owe their distinct communities to seasonal oceanic current patterns and consequent low water temperature in winter. |
本系統中英文摘要資訊取自各篇刊載內容。