Sound sees more: A comparison of imaging sonars and optical cameras for estimating fish densities at artificial reefs
Sound sees more: A comparison of imaging sonars and optical cameras for estimating fish densities at artificial reefs
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声音看得更远：用于估算人工鱼礁鱼类密度的成像声纳和光学相机的比较
DOI：
10.1016/j.fishres.2023.106720
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发表时间：
2023
影响因子：
2.4
通讯作者：
Sibley E
中科院分区：
文献类型：
--
作者：
Sibley E
成像声呐越来越多地与光学仪器一起用于鱼类调查或作为光学仪器的替代品。为了证明成像声纳的使用是合理的，我们必须首先描述它们的应用、局限性和与光学相比的功效。本研究比较了在四个频率（0.75、1.2、2.1和3mhz）下使用成像声纳获得的鱼类种群数量数据，以及同时在两个人工鱼礁上使用光学摄像机拍摄的图像。声纳探测到的鱼类密度平均是光学探测到的三倍。声纳的探测能力更强，因为附着在人工礁或邻近海床上的鱼被伪装起来，这可以通过成像声纳识别，但不使用光学。这表明，栖息地和鱼类组合组成的差异可能会影响成像声纳与光学的相对性能和密度估计。确定了成像声纳在未来调查设计中需要考虑的几个局限性，包括：区分鱼类和底栖生物的生长；无法在复杂的生境结构中发现鱼类；海底和旁瓣干扰会截断测量量。总的来说，这项研究证明了成像声纳在量化鱼类群落方面的价值，并描述了它们在未来调查中部署的局限性和建议。
Imaging sonars are increasingly being utilised in fish surveys in conjunction with or as substitutes for optical instruments. To justify the use of imaging sonars, we must first describe their application, limitations, and efficacy compared to optics. This study compared quantitative data of fish assemblages obtained using imaging sonars operating at four frequencies (0.75, 1.2, 2.1, and 3 MHz) with simultaneous optical camera footage at two artificial reefs. Fish densities were on average three times higher for sonar than optics. Greater detection by the sonar was attributed to site-attached fishes that were camouflaged against the artificial reefs or the adjacent seabed, which could be discriminated by imaging sonar, but not using optics. This suggests that differences in habitat and fish assemblage composition could influence the relative performance and density estimates of imaging sonar versus optics. Several limitations of imaging sonar were identified that need to be accounted for in future survey designs, including: discriminating fishes from benthic growth; an inability to detect fishes within complex habitat structures; and seabed and side-lobe interferences that truncate survey volume. Overall, this study demonstrates the value of imaging sonar for quantifying fish communities and describes limitations and recommendations for their deployment in future surveys.
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Allis shad Alosa alosa 的产卵行为：基于成像声纳数据的新见解。
影响因子：
2
作者：
M. Langkau;D. Clavé;M. B. Schmidt;J. Borcherding
通讯作者：
J. Borcherding
影响因子：
2.4
作者：
Cook, Denham;Middlemiss, Karen;Jerrett, Alistair
通讯作者：
Jerrett, Alistair
小空间范围内鱼类群落的变化，是海上风电场增加栖息地复杂性的影响。
影响因子：
3.3
作者：
R. van Hal;A. Griffioen;O. A. van Keeken
通讯作者：
O. A. van Keeken
DOI：
10.1016/j.jembe.2006.01.017
发表时间：
2006-06
影响因子：
2
作者：
P. Brehmer;T. D. Chi;D. Mouillot
通讯作者：
P. Brehmer;T. D. Chi;D. Mouillot
影响因子：
2.4
作者：
S. Shahrestani;Hongsheng Bi;V. Lyubchich;K. Boswell
通讯作者：
S. Shahrestani;Hongsheng Bi;V. Lyubchich;K. Boswell