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題 名 | Taxonomic Composition and Grazing Impact of Calanoid Copepods in Coastal Waters Near Nuclear Power Plants in Northern Taiwan=臺灣北部核電廠近岸海域哲水蚤橈足類之種組成與攝食衝擊 |
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作 者 | 黃創儉; 黃將修; 陳清潮; | 書刊名 | 動物研究學刊 |
卷 期 | 37:4 1998.10[民87.10] |
頁 次 | 頁330-339 |
分類號 | 387.1 |
關鍵詞 | 哲水蚤橈足類; 種組成; 攝食衝擊; Calanoid copepods; Taxonomic composition; Grazing impact; |
語 文 | 英文(English) |
中文摘要 | 1996年8月在臺灣北部核一與核二廠附近海域八個測站研究Calanoid橈足類攝食浮 游植物之情形。本研究分析每個測站之 Calanoid 橈足類之含量、種組成與攝食速率;並採 用消化道螢光色素分析法估算 Calanoid 橈足類在每個測站之攝食率與濾食率。本次研究發 現共有 38 種 Calanoid 橈足類存在,而每個測站 Calanoid 橈足類的豐度、種組成均有不 同,其中 Acrocalanus gracilis 為在採樣期間之 Calanoid 橈足類中的優勢種,且其占所 有 Calanoid 橈足類含量之 30%-90% 之多。 各種 Calanoid 橈足類其攝食率及濾食率在每 個採樣站之間的變化很大。 雖然 A. gracilis 的體型相對的較小及其較低的濾食率,但因 為其具有最多的生物豐度所以牠是本研究海域採樣期間最重要的草食者。對核一與核二廠附 近海域分析 Calanoid 橈足類攝食浮游植物之情形, 顯示出在每立方公尺海水中有 0.05%-11% 的葉綠素是被 Calanoid 橈足類所攝食。同時本次研究沒有證據顯示第三採樣站 海水表面溫度雖達攝氏三十度,對 Calanoid 橈足類之群聚結構或攝食情形產生顯著之影響 。 |
英文摘要 | This study was carried out in August 1996 to study the taxonomic composition and grazing impact of calanoid copepods in coastal waters at 8 sampling stations outside Nuclear Power Plants 1 and 2 on the northern tip of Taiwan. Thermal pollution was observed at station 3 outside Nuclear Power Plant 2 where surface water temperature reached 30.0 ℃. At each sampling station, the abundance and species composition of calanoid copepods were analyzed; the gut fluorescence method was used to estimate in situ ingestion rates and clearance rates. Thirty-seven species of calanoid copepods were identified. The abundance and species composition of calanoid copepods varied among sampling stations. Acrocalanus gracilis, comprising 30%-90% of the numerical abundance, strongly dominated the calanoid copepod community in the area during the study period. Variability of ingestion rates and clearance rates for a single species was high among the sampling stations. Despite its relatively small size and low clearance rate, A. gracilis was the most important grazer because of its numerical abundance. Grazing impact, estimated as the fraction of chlorophyll removed from 1 m �� of water by the calanoid copepod assemblage ranged from 0.05% to 11%, suggesting that the grazing pressure of calanoid copepods on phytoplankton in the near shore waters outside Nuclear Power Plants 1 and 2 was minor. There was no evidence to suggest that the slightly elevated surface water temperature had affected the community structure or grazing impact of calanoid copepods at station 3. |
本系統中英文摘要資訊取自各篇刊載內容。