Detecting a nearshore fish parade using the adaptive resolution imaging sonar (ARIS): An automated procedure for data analysis
Detecting a nearshore fish parade using the adaptive resolution imaging sonar (ARIS): An automated procedure for data analysis
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DOI：
10.1016/j.fishres.2017.03.013
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发表时间：
2017-07
影响因子：
2.4
通讯作者：
S. Shahrestani;Hongsheng Bi;V. Lyubchich;K. Boswell
中科院分区：
文献类型：
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作者：
S. Shahrestani;Hongsheng Bi;V. Lyubchich;K. Boswell
声纳成像的最新发展提供了一种有效的方法，可以在难以到达的区域（例如码头和桥墩等永久性结构）以及难以看到的环境（例如高度浑浊的水域）中获得自由游动鱼类的接近视频质量的图像。然而，处理声纳成像系统输出的大量数据仍然是一个重大挑战。在本研究中，我们开发了一种自动图像处理程序，用于处理使用部署在固定位置的自适应分辨率成像声纳 ARIS Explorer 3000 (Sound Metrics INC) 连续 59 小时记录的镜头。我们的方法成功地以 >94% 的精度对大型自由游动的鱼类进行了计数，并通过手动和自动计算估计样本量高度相关 (r = 0.96)。使用具有零膨胀泊松分布的自回归时间序列模型（六阶或更高阶）来估计局部丰度。在采样的前 31 小时内，鱼类数量低至零，而在最后 28 小时内，鱼类大量涌入。观察到的模式与当地的天气模式一致：前 32 小时间歇性雷暴，最后 24 小时天气相对平静。尽管雷暴限制了我们对潮汐和昼夜周期对鱼类码头使用情况的结论，但很明显，天气条件对大型鱼类对码头的使用起着重要作用。总体而言，本研究中使用的 ARIS3000 部署、自动数据处理和统计分析在研究浅层栖息地的鱼类与码头的关系方面被证明是成功的。
Recent developments in sonar imaging provide an efficient way of obtaining near video quality of free-swimming fish in hard to reach areas, e.g., permanent structures like docks and piers, and hard to see environments, e.g., highly turbid waters. However, processing large volumes of data output by sonar imaging systems remains a major challenge. In the present study, we developed an automated image processing procedure to process footage recorded for 59 consecutive hours using an Adaptive Resolution Imaging Sonar, ARIS Explorer 3000 (Sound Metrics INC) deployed at a fixed location. Our approach successfully counted large free swimming fish at a precision rate >94% and estimated sample volume with manual and automatic calculations being highly correlated (r = 0.96). An auto-regressive time series model (of the sixth or higher order) with a zero-inflated Poisson distribution was used to estimate local abundance. Fish counts were low to zero during the first 31 h of sampling, and a major influx of fish occurred in the last 28 h. The observed pattern was co-incidental with local weather patterns: intermittent thunderstorms in the first 32 h and relatively calm weather in the last 24 h. Though thunderstorms limited our conclusions on fish-pier usage with tidal and diurnal cycles, it is apparent that weather conditions play a role in pier usage by large fish. Overall, the ARIS3000 deployment, automated data processing and statistical analyses used in this study proved successful in studying fish affiliations with piers in shallow habitats.