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題名 | A Preliminary Survey on Primary Productivity Measured by the [fed8]C Assimilation Method in the KEEP Area=KEEP海域內以[fed8]C吸收法測量初級生產力之探討 |
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作 者 | 夏復國; 龔國慶; 劉康克; | 書刊名 | 臺灣海洋學刊 |
卷期 | 34:1 1995.01[民84.01] |
頁次 | 頁1-15 |
分類號 | 351.9 |
關鍵詞 | 浮游植物; 海洋生態; 東海南部; 黑潮; Phytoplankton; Marine ecology; Southern east china sea; Kuroshio; |
語文 | 英文(English) |
中文摘要 | 本文報導在KEEP海域內以14C吸收法測量初級生產力之初步結果。調查時間為1994 年5月至10日,地點為位於KEEP-Key測線上的4個測站。測站1為近岸站,測站8及11代表湧升 流站,測站17為黑潮站。初級生產力隨測站及取樣深度而異;測值在第1站最高(134mgCm-3 d-1),第17站最底(11mgCm-3d-1)。透光層積分初級生產力在第1,8,11及17測站分別為 1901,418,1537及425mgCm-2d-1。第1及11測站的高初級生產力及透光層積分初級生產力可能 與高養分(如硝酸鹽)供應速率有關。葉綠素單位生產力值界於0.6到10.9mgC mgChl-1 h-1 之間,以第8及11測站較高。初級生產力及葉綠素單位生產力在此四測站均有隨水深而遽減 之現象,顯示光線對此二參數之重要性。現場培養法所得之透光層積分初生產力值(569mg C m-2 d-1)較船上培養法高出36%,此可能肇因於現場培養裝置之置放方式使得培養瓶之水 深位置較原先計劃中之水深為淺。 |
英文摘要 | Primary productivity (PP) at the four sampling station in the KEEP (Kuroshio Edge Exchange Processes) area, which located on the southern East China Sea north of Taiwan, was measured by the 14C assimilation method from May 4 to May 10, 1994. Stations 1, 8 and 11 and 17 represented the coastal, the upwelling and the Kuroshio waters respectively. PP varied among stations and depths, ranging from <11 to 134 mg Cm-3 d-1 with the highest and lowest values observed at stations 1 and 17 respectively. The euphotic zone integrated productivity (EIP) for stations. 1,8,11 and 17 were 1901, 418, 1537 and 425 mgC m-2 d-1 respectively. Higher PP and EIP values and chlorophyll a concentration observed at stations 1 and 11 might be explained by the high nitrate supply rates. Normalized productivity (PB) ranged from 0.6 to 10.9 mgC mgChl-1 h-1 with higher values observed at stations 8 and 11. Both PP and PB decreased exponentially with depth at all sampling stations, indicating a possible effect of light exerted on PB. The EIP value derived from the in situ incubation (569 mgC m-2 d-1) was 36% higher than of the on deck incubation. This might be due to the tilting of the in situ incubation array which allowed the in situbottles to expose to higher light level. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。