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

The sub-tropical Houtman Abrolhos Islands and associated reefs are located approximately 60 km offshore from the mid-west coast of Western Australia on the edge of the continental shelf between 28˚15’S and 29˚S. The Houtman Abrolhos comprise three main island groups that span approximately 100 km in a north-south direction. From south to north they are the Pelsaert, Easter and Wallabi groups.

From late May to early June 2007, stereo-video surveys were conducted at three sites within each island group). 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).

亚热带豪特曼·阿布洛霍斯群岛（Houtman Abrolhos Islands）及其附属礁体，坐落于澳大利亚西澳大利亚州中西部近海约60公里处的大陆架边缘，纬度范围介于南纬28°15′至29°之间。豪特曼·阿布洛霍斯群岛由三大主要岛群组成，南北跨度约100公里，自南向北依次为佩尔萨特群（Pelsaert Group）、伊斯特群（Easter Group）与沃拉比群（Wallabi Group）。

2007年5月末至6月初，研究团队在每个岛群的3个采样点开展了立体视频调查。本数据集与采自宁格鲁（Ningaloo）及阿布洛霍斯海域的相关数据，共同被纳入一项大型研究：该研究对比分析了采用带饵遥控水下立体视频系统（Baited remote underwater stereo-video，简称stereo BRUV）与潜水员操作式立体视频系统（Diver-operated stereo-video systems，简称stereo DOV）所采集的鱼类群落组成、相对丰度与个体体型尺寸。