Data for: Disturbance, dispersal and marine assemblage structure: a case study from the nearshore Southern Ocean

Benthic assemblage structure data was collected form the IceBerg Impact Study grids located in South Cove, Ryder Bay, Adeliade Island, Western Antarctic Peninsula. Recovery Age includes only the sample grid itself and records the number of years since it was last hit. Local Disturbance includes all adjacent squares and the sample square with the proportion that had been hit in the past year recorded. Background Disturbance includes all the squares within the grid and the sample grid square and the rate at which hits have been recorded over the past 7 years. The high-dispersal assemblage diversity and abundance was collected across all samples at a single point in time. Whereas the low-dispersal assemblage is a dataset compiled from 7 years of observations with the presence and absence of each species. The Low-dispersal encrusting assemblages (bryozoans) was sampled from 2009 to 2014.Images of the high-dispersal assemblages within each grid square were captured in January 2016 with a GoPro 3+ (GoPro Inc.) in a deepwater housing. Camera lens distortion (fish-eye) was minimised using a calibration lens file and Hugins photo editing software. Grid squares were selected to ensure replication across depth, age and disturbance regimes.

南极半岛西部阿德利德岛南湾的冰山撞击研究网格中，收集了底栖生物群落的结构数据。恢复年龄仅包括样本网格本身，并记录自上次撞击以来的年数。局部干扰包括所有相邻的方格以及样本方格，并记录了过去一年中受到撞击的比例。背景干扰包括网格内所有方格以及样本网格方格，并记录了过去7年内撞击的发生率。在单一时间点收集了所有样本的高扩散生物群落的多样性和丰度。而低扩散生物群落则是一个数据集，它由7年的观察结果编制而成，记录了每个物种的存在与否。自2009年至2014年，对低扩散附着生物群落（苔藓动物）进行了采样。2016年1月，使用GoPro 3+相机（GoPro Inc.）在深海外壳中捕捉了每个网格方格内的高扩散生物群落图像。通过校准镜头文件和Hugins照片编辑软件最小化了相机镜头的畸变（鱼眼效果）。选择网格方格以确保在深度、年龄和干扰制度上的重复性。