COMPARISON OF ZOOPLANKTON DENSITY ESTIMATION USING BONGO PLANKTON NET AND UNDERWATER ACOUSTICS METHOD

Maspari Journal : Marine Science Research Pub Date : 2021-01-23 DOI:10.56064/maspari.v13i1.13986

E. N. Ningsih, R. Aryawati, A. Febrianti, F. Supriyadi

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引用次数: 1

Abstract

Zooplankton is one of the factors that can affect water conditions. The existence and abundance of zooplankton can indicate the level of water fertility. Zooplankton abundance can be observed by using two methods. These are the bongo plankton net and underwater acoustics method. This study aims to determine the abundance of zooplankton using bongo plankton net 250 ?m mesh size and underwater acoustics method using Simrad EK15 200 kHz frequency. This study was conducted in July 2019 in the Banyuasin estuary. The results showed the abundance of zooplankton using bongo plankton net ranged from 7-116 ind/m3, and the zooplankton density in underwater acoustics ranges from 0-2700 ind/m3. It means the ratio between both of the methods is around 1:20. The comparison could illustrate the difference in zooplankton density. It is necessary to adjust the specifications instrument and sampling technique of zooplankton sampling equipment and underwater acoustics instruments to obtain more accurate results.Keywords: Abundance, Banyuasin estuary, hydroacoustics, zooplankton,

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用bongo浮游生物网和水声法估算浮游动物密度的比较

浮游动物是影响水情的因素之一。浮游动物的存在和丰度可以指示水体的肥力水平。浮游动物的丰度可以用两种方法来观察。这些是bongo浮游生物网和水下声学方法。本研究的目的是利用bongo浮游动物网250 ?m网目尺寸和Simrad EK15 200 kHz频率的水下声学方法来确定浮游动物的丰度。这项研究于2019年7月在Banyuasin河口进行。结果表明:bongo浮游生物网浮游动物丰度为7 ~ 116 ind/m3，水声浮游动物密度为0 ~ 2700 ind/m3。这意味着两种方法的比例大约是1:20。这种比较可以说明浮游动物密度的差异。为了获得更准确的结果，有必要调整浮游动物采样设备和水声仪器的规格、仪器和采样技术。关键词:丰度;Banyuasin河口;水声;

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Maspari Journal : Marine Science Research

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