Abundance estimation of fish schools based on a relationship between school area and school biomass
Abundance estimation of fish schools based on a relationship between school area and school biomass
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基于鱼群面积和鱼群生物量之间关系的鱼群丰度估计
DOI：
10.1051/alr:1993024
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
O. A. Misund
中科院分区：
文献类型：
--
作者：
O. A. Misund
近距离鱼群水平引导声纳声丰度估算方法
表面呈现。其基本原理是实地测量学校的水平面积，然后通过学校面积与学校生物量的关系推导出学校生物量。该方法的应用是通过1990年9月在北海东部斯卡格拉克的声纳调查的例子。记录学校的面积进行了测量的估计功能的Furuno CSH-70声纳，并选定的学校被捕获的围网建立学校面积学校生物量的关系。在实际区域，鲱鱼（鲱鱼）和鲭鱼（马鲛）的生物量估计约为90 000和43万吨，分别。讨论了该方法的精度，并提出了改进建议。
A method for acoustic abundance estimation by horizontal guided sonar of fish schooling close to
surface is presented. The basic principle is to measure the horizontal area of schools in situ, and derive the school biomass subsequently through a school area to school biomass relationship. The application of the method is exemplified through a sonar survey in the eastern North Sea-Skagerrak in September 1990. The areas of recorded schools were measured by the estimate function of a Furuno CSH-70 sonar, and selected schools were captured by purse seine to establish a school-area to school-biomass relationship. In the actual region, the biomass of herrig (Clupea harengus) and mackerel (Scomber scombrus) was estimated to about 90 000 and 43 0000 tons, respectively. The accuracy of the method is discussed and improvements are suggested.