Photoquadrat survey of hard substratum assemblages around Casey Station: boulders and boulder fields.

A survey of the epibenthic fauna of hard-substrata was made around Casey Station, using a camera mounted on a frame to take photoquadrats. A nested sampling design was used with several spatial scales. At each location there were two sites, approximately 50-100 m apart. At each site there were three by 15 m long transects, approximately 5 m apart. On each transect there were 2 plots, 5 m long by 2 m wide. Six photoquadrats were taken in each plot. This metadata record describes one component of this survey, photoquadrats taken in and around boulders and boulder fields. One of the aims of this survey was to determine if there is any evidence of human impacts in these assemblages. There were several control and several potentially impacted locations.

The data have yet to be analysed.

Also links to ASAC 1100.

本研究针对凯西站周边硬质底质（hard-substrata）的底上动物区系（epibenthic fauna）开展调查，采用搭载于支架的相机拍摄摄影样方（photoquadrats）。本次调查采用嵌套采样设计（nested sampling design），涵盖多个空间尺度。每个采样点位设置2个样点，间距约50-100米；每个样点设置3条长15米的样带，样带间距约5米；每条样带设置2个样方，尺寸为长5米、宽2米；每个样方内拍摄6张摄影样方。本元数据记录（metadata record）仅描述本次调查的一部分内容，即巨砾及巨砾滩内外拍摄的摄影样方。本次调查的目标之一是探明这些生物群落中是否存在人类活动干扰的痕迹，共设置了多个对照样点与多个潜在受干扰样点。
目前该数据集尚未开展分析工作。
本数据集同时关联至ASAC 1100。