Application of normalized biomass size spectra to laser optical plankton counter net intercomparisons of zooplankton distributions
Application of normalized biomass size spectra to laser optical plankton counter net intercomparisons of zooplankton distributions
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归一化生物量尺寸光谱在浮游动物分布激光光学浮游生物计数器网比对中的应用
DOI：
10.1029/2005jc002948
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发表时间：
2006
影响因子：
--
通讯作者：
M. Harvey
中科院分区：
文献类型：
--
作者：
A. Herman;M. Harvey
光学浮游生物计数器(OPC)和最近的激光OPC(LOPC)主要用于两个测量应用：(1)识别特定的浮游动物物种；(2)利用基于大小的光谱测量来改变浮游动物群落结构。归一化生物量尺寸谱(NBSS)是基于尺寸的方法的一种表示。本研究的基础是利用NBSS描述浮游动物群落的状况或特征，以便对2001年春季和2002年春季分别在下河口和圣劳伦斯湾进行的两次海洋巡航期间同时进行的净样本和LOPC测量数据进行合理的相互比较。NBSS线性斜率-0.7，或更多的“蓝水”条件，表明这两种方法有可能进行合理的相互比较。这一观察结果适用于体型较小的浮游动物，如水蚤的桡足类动物。等效球直径<；900μm。大型水蚤的测量。阶段(IV-VI)似乎不受其他聚集体或胶状物质的存在的影响，在两个采样年份，LOPC和NET之间得到了合理的相互比较。Calanus spp.产生的LOPC信号。(IV-VI)较大，更容易分离。
The optical plankton counter (OPC) and recently the laser OPC (LOPC) have been used primarily in two measurement applications: (1) identification of specific zooplankton species and (2) changes in zooplankton community structure using size-based spectral measurements. The normalized biomass size spectra (NBSS) are one representation of the size-based approach. The present study is based on utilizing the NBSS to describe the conditions or characteristics of the zooplankton community that allow a reasonable intercomparison of net samples and LOPC measurements made simultaneously for data collected during two oceanographic cruises carried out in the Lower Estuary and the Gulf of St. Lawrence in spring 2001 and 2002, respectively. NBSS linear slopes -0.7, or more "blue water" conditions, indicate the potential for reasonable intercomparison of the two methods. This observation applies to smaller-sized zooplankton such as copepodites of Calanus spp. with equivalent spherical diameter <900 μm. The measurement of larger Calanus spp. stages (IV-VI) did not seem affected by the presence of additional aggregates or gelatinous material and reasonable intercomparisons between LOPC and net were obtained for both sampling years. The LOPC signals produced by Calanus spp. (IV-VI) were larger and more easily separated.