WAMSI Node 4.2.4 - Demersal fish assemblage sampling method comparison and power analyses - Capes

In January 2008, stereo-video surveys were conducted in the proposed Capes Marine Park at 3 sites within each of three locations. It appears that the relative composition of the assemblage sampled by baited stereo-video stations and diver operated stereo-video transects differs over a gradient in latitude that is likely to correspond to variation in the trophic composition of fish communities. A cost-benefit analyses showed that baited stereo-video methods were generally more cost-efficient than diver operated stereo-video transects for detecting change in the fish assemblage.

This data was used with data from Ningaloo and Abrolhos regions in a larger study that compared the assemblage composition, relative abundance and size of fishes sampled using Baited remote underwater stereo-video (stereo BRUV) and Diver-operated stereo-video systems (stereo DOV).

2008年1月，在拟议的开普海洋公园（Capes Marine Park）内的三个区域中，每个区域各选取3个站点开展了立体视频调查。结果显示，带饵立体视频站点与潜水员操作的立体视频样带所采样的群落相对组成，在纬度梯度上存在差异，这可能与鱼类群落的营养组成变化相关。成本效益分析表明，在检测鱼类群落变化方面，带饵立体视频方法通常比潜水员操作的立体视频样带更具成本效益。

该数据与来自宁格罗（Ningaloo）和阿布洛霍斯（Abrolhos）区域的数据一起，被用于一项更大规模的研究——该研究比较了通过带饵远程水下立体视频（stereo BRUV）和潜水员操作的立体视频系统（stereo DOV）采样得到的鱼类群落组成、相对丰度及个体大小。