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首页> 外文期刊>Oceanology >The Study of Meiobenthos Size Structure with the Sieving Method (Case Study of the Arctic Basin Free-Living Nematodes)
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The Study of Meiobenthos Size Structure with the Sieving Method (Case Study of the Arctic Basin Free-Living Nematodes)

机译：筛分法研究尾翅目大小结构（以北极盆地自由活动线虫为例）

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摘要

Body lengths and widths were measured and body volumes were calculated for 1556 Arctic nematodes sampled from depths of 800-3000 m. The samples were filtered through standard sieves with mesh sizes of 500, 250, 125, 63, and 32 #mu#M. Due to the random orientation of the animal bodies with respect to the sieve plane and the presence of detrital and sediment particles, one can only assess the probabilities of the animal retention over the sieves. The distributions of the logarithms of the body volume and length values of nematodes were close to the normal distribution on the three finer sieves. A simple mathematical filtration model describing size distribution of nematodes on the sieves is proposed. A relation between the mean log l_(mean) value on the sieve and the logarithm of its mesh size log m was obtained: log/ _(mean)=a+k log m; the k values ranged from 0.5 to 1.0 linearly depending on the dispersion of the original size spectra. The limitations for the application of this relation are discussed.
机译：测量了从800-3000 m深度采样的1556个北极线虫的体长和宽度，并计算了体体积。样品通过网孔尺寸为500、250、125、63和32＃mu＃M的标准筛进行过滤。由于动物体相对于筛面的随机取向以及碎屑和沉积物颗粒的存在，人们只能评估动物在筛子上滞留的可能性。线虫的体体积和长度值的对数分布接近于三个较细筛上的正态分布。提出了一个简单的数学过滤模型来描述线虫在筛子上的尺寸分布。筛子上的平均log l_（mean）值与其网格尺寸log m的对数之间的关系为：log / _（mean）= a + k log m; k值在0.5到1.0范围内线性变化，具体取决于原始尺寸光谱的色散。讨论了应用此关系的限制。

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