Fish sampling with active methods
- 作者：Jan Kube膷ka ; kubecka@hbu.cas.cz
- 关键词：Fish stock assessment ; Active and passive gear ; Intercalibration ; Standardization ; Accuracy ; Ground truthing ; Interpretation ; Selectivity ; Avoidance
- 刊名：Fisheries Research
- 出版年：2012
- 期刊代码：45_01657836
- 类别：abs
- 出版时间：July, 2012
- 卷：123-124
- 期：Complete
- 页码：1-3
- 文件大小：167 K
摘要
The conference 鈥楩ish Sampling with Active Methods鈥?(FSAM) was held in September 2010 in Ceske Budejovice, Czech Republic. A total of 108 participants from 29 countries attended the meeting and 100 lectures and posters were presented. The meeting brought together scientist working with an interesting combination of techniques for investigation of fish populations in seas, lakes, reservoirs and rivers (mostly hydroacoustics, trawling, electric fishing, comparison of active methods with the use of gillnets and use of visual approaches). In contrast to passive methods, active methods can be used to measure absolute fish abundance because the sampling volume can be defined and estimated. If fish welfare precautions are applied, active methods can be less destructive than passive. But there is still a need for using combinations of multiple sampling methods and for improved understanding of gear efficiency, scrutinizing the efficiency through independent methods or by studying of variation in sampling efficiency due to the robustness of the sampling strategy (comparing the nets of different dimensions, mesh sizes, speed etc.).