頁籤選單縮合
題 名 | Spatiotemporal Variations in the Abundance, Biomass, Fecundity, and Production of Oithona brevicornis (Copepoda: Cyclopoida) in a West African Tropical Coastal Lagoon (Grand-Lahou, Côte d'lvoire) |
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作 者 | Etilé, Raphael N'doua; Aka, Maryse N'guessan; Kouassi, Aka Marcel; Pagano, Marc; N'douba, Valentin; | 書刊名 | Zoological Studies |
卷 期 | 51:5 2012.09[民101.09] |
頁 次 | 頁627-643 |
分類號 | 387.17 |
關鍵詞 | Oithona brevicornis; Biomass; Egg production; Tropical lagoon; West Africa; |
語 文 | 英文(English) |
英文摘要 | Oithona brevicornis is a very important zooplankton species in coastal and estuarine aquatic ecosystems of West Africa and was recorded in very high abundances in coastal lagoons of Côte d’Ivoire. To better understand the functional role of this key species, spatio-seasonal variations in O. brevicornis abundance, biomass, fecundity, and production were investigated at 21 stations in Grand-Lahou Lagoon during an annual cycle from Jan. to Dec. 2004. The abundance and biomass showed more or less important spatiotemporal variations. Two peaks were recorded for the mean spatial values in Feb.-Mar. and Sept. During the long (LDS) and short dry seasons (SDS), all developmental stages showed their weakest density and biomass in the channel zone and near the mouth of the Boubo River. During the long (LRS) and short rainy seasons (SRS), O. brevicornis almost disappeared or showed very low abundances (< 1 individual/L) in the northern part and near the channel. Spatiotemporal variations in O. brevicornis fecundity and production showed no particular pattern during the dry seasons (LDS and SDS), while during the rainy seasons (LRS and SRS), very low fecundity and production values were recorded at stations influenced by river inputs. Correlation analyses showed that temperature and salinity were the main variables explaining these spatio-seasonal variations. |
本系統中英文摘要資訊取自各篇刊載內容。