Comparison of abundance and spatial distribution of burrowing megafauna from diver and remotely operated vehicle observations
Comparison of abundance and spatial distribution of burrowing megafauna from diver and remotely operated vehicle observations
复制标题
潜水员和遥控车辆观测的穴居巨型动物的丰度和空间分布比较
DOI：
10.3354/meps244089
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发表时间：
2002
影响因子：
2.5
通讯作者：
Malcolm B. Jones
中科院分区：
文献类型：
--
作者：
D. Parry;L. Nickell;M. Kendall;M. Burrows;D. Pilgrim;Malcolm B. Jones
收集有关表层巨型动物的丰度和分布以及与穴居巨型动物相关的生物沉积物特征的信息的标准方法是由潜水员直接观察和计数。然而，远程观测允许将与潜水员观测结果相当的信息应用于比潜水员所能达到的更深的深度和更广泛的空间范围的调查。本文比较了通过潜水员和远程操作车辆测绘技术获得的巨型动物生物沉积物特征的丰度估计。结果表明，总特征丰度和显着特征丰度的估计之间具有很强的一致性，这保证了远程观测技术在特征丰度估计方面不会出现系统误差。不同观察技术检测最小特征的能力似乎有所不同，但这是由特征测量而不是特征检测引起的人为现象。连接到相机以量化图像比例的激光二极管阵列增加了可以从远程图像中提取的定量数据量。
The standard method for collecting information on both the abundance and distribution of surface-dwelling megafauna, and biotic sediment-features associated with burrowing megafauna has been direct observation and counting by divers. However, remote observations allow information comparable to diver observations to be applied to investigations at greater depths and over wider spatial extents than divers may achieve. The present paper compares abundance estimates of megafaunal biotic sediment-features obtained from diver and remotely operated vehicle-mapping techniques. Results show strong agreement between estimates of total-feature and conspicuous- feature abundance, providing assurance that remote observation techniques are not subject to systematic errors in estimation of feature abundance. The ability to detect the smallest features appeared to differ between observation techniques, but this was an artefact caused by measurement of features rather than feature detection. A laser diode array attached to the camera to quantify image scale increased the amount of quantitative data that may be extracted from remote images.