- 期刊
- OpenAccess
Data quality of reported logbooks for the inshore and coastal gillnet fisheries in waters off northwestern Taiwan
台灣西北海域沿近海刺網漁業作業日誌資料品質評估
摘要
Fisheries data could be obtained in a variety of forms including logbooks, landings receipts, or onsite sampling by observers at the fishing ports. Logbooks have been historically considered a widely used approach to collect fishery information on fishing activities, catches, and discards. However, very few studies have evaluated the data quality of logbooks returned by captains especially for the local artificial fisheries. Two types of score were developed in this study to evaluate the data quality of logbook in terms of how many fishing trip were reported in a month and whether the operation location and catch amounts in weight and in number by species were registered in the logbooks. Results showed that most of the captains submitted logbook data constantly during the 2-year survey. More than 60% of the records were provided with fishing location specified in the logbooks. Very high percentage of the participating captains returned well-qualified data regarding to fishing activities and retained catches, as demonstrated based on both of the scores. The need has been raised to greatly include data from small-scale local fisheries into species assessment and the fisheries management and monitoring, further highlighting the importance of the methodology developed in this study to examine the data quality of returned logbooks if there have aims to collect fishery-dependent information.
並列摘要
漁業資料可藉由各種方式蒐集，包括作業日誌、卸魚聲明書或是觀察員現場採樣，其中作業日誌已被認為是最廣泛使用的工具，尤其在蒐集漁業資訊如作業動態、漁獲量、丟棄量等資料，但卻少有研究特別針對小型當地漁業船長所提報的作業日誌資料品質來加以評估。本研究建立兩種分數指標分別評估作業日誌所回報資料的數量與品質，評估項目包括每月所回報的作業航次數及是否填報作業地點與各漁獲魚種重量與數量。分析結果顯示大多數船長在2年調查時間內，皆持續填報作業日誌資料，超過60%的作業紀錄有填報漁獲地點，評估分數顯示大多數船長回報品質良好的作業活動及漁獲資料。長久以來皆有把小型當地漁業活動資料納入魚種評估與漁業監控與管理之需求，本研究所建構之作業日誌資料品質評估方法，可作為蒐集漁業相關資訊與品質評估最佳的參考依據。
延伸閱讀
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