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題名 | Stock Assessment of South Atlantic Albacore by the Nonequilibrium Production Model=應用非平衡生產量模式評估南大西洋長鰭鮪資源 |
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作者 | 孫志陸; 葉素然; | 書刊名 | 臺灣海洋學刊 |
卷期 | 35:2 1996.06[民85.06] |
頁次 | 頁155-172 |
分類號 | 439.24 |
關鍵詞 | 資源評估; 南大西洋長鰭鮪; 非平衡生產量模式; Stock assessment; South atlantic albacore; Nonequilibrium production model; |
語文 | 英文(English) |
中文摘要 | 本報告整理分析在南大西洋作業的我國鮪釣船自1968至1992年、南非餌釣船自 1985至1992年,以及其他漁業之長鰭鮪漁獲量及漁獲努力量資料。首先將漁獲努力量以一般 線性模式(GLM)及/或本間(Honma)方法予以標準化;繼之,應用ASPIC非平衡生產量 模式評估南大西洋長鰭鮪資源現況。結果顯示該資源現況並不樂觀,處於稍微過度開發階 段,略有過漁之慮,應採取適當的漁業管理措施,以保護此資源,使之繁衍不息,繼續為鮪 漁業國(主要是我國)所開發利用。 |
英文摘要 | Albacore catch and effort data from 1968 to 1992 in the South Atlantic Ocean by Taiwanese longliners, South African baitboats and other fleets were collected and complied separately. The fishing efforts were standardized by the Honma and or the General Linear Model (GLM). A nonequilibrium stock production model-ASPIC was then applied to assess the current status of the South Atlantic albacore. Four categories of fisheries were represented in each case and three cases of modeling each accompanied by a bootstrap analysis were conducted. The results indicate that the current stock status is not optimistic. The 1992 catch exceeded the upper level of the bootstrap 80 percent confidence intervals of the estimated maximum sustainable yield (MSY), suggesting that the stock has been exploited above optimal levels in terms of MSY> The estimated trends in standing stock biomass indicated that the stock is currently below that required to achieve MSY and has been since 1990, and the estimated trends in total fishing mortality indicated that the fishing mortality rate has exceed Fmsy since 1986 except 1991. Both trajectories indicated that the stock has been fully exploited since 1990. Further management of this stock is necessary in order to keep the stock near the biomass producing the MSY. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。