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Updated: Jul 23, 2025

Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools
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调查方法效率的比较,用于估计斑马 (Dreissena polymorpha) 的密度

Jake M Ferguson1,2,3, Laura Jiménez1, Aislyn A Keyes4

  • 1School of Life Sciences, University of Hawaii at Manoa, Honolulu, Hawaii, United States.

PeerJ
|July 17, 2023
PubMed
概括

选择正确的调查方法来估计动物种群取决于密度. 距离测量对于低密度来说是有效的,而正方形测量对于高密度来说更好.

关键词:
丰富度估计 丰富度估计水生入侵物种水生入侵物种.检测概率 检测概率远程删除调查调查方位调查调查 方位调查搬迁调查 搬迁调查在水下进行视觉调查.

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相关概念视频

Testing a Claim about Mean: Known Population SD01:11

Testing a Claim about Mean: Known Population SD

A complete procedure of testing the hypothesis about a population mean is explained here.
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
In most realistic situations, the population standard deviation is often unknown, but in rare circumstances, when it...
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