A manipulative field experiment examining the recruitment of sessile epifauna to hard-substratum at potentially impacted and control locations.

The recruitment of epifauna (sessile and mobile) on hard-substratum was examined in a field experiment using tiles. A total of 160 tiles were deployed at five locations, with 32 tiles at each location, arranged in a spatially nested design. There were three potentially impacted locations locations (two in Brown Bay and one in Shannon Bay) and two control locations (in O'Brien Bay).This metadata record describes data from the first sampling time only. Eight tiles were collected from each location 15 months after the initial deployment. The experiment was setup so that recruitment of sessile epifauna to both the upper and lower sides of the tiles could be examined. The mobile epifauna on the tiles were also collected and are described in a separate metadata record.Heavy recruitment was observed on the underside of the tile and only light recruitment was observed on the upper surface.Also links to ASAC 1100.

本野外实验以附着陶片（tiles）为载体，调查硬质底质上的底上动物（epifauna，包含固着型与移动型类群）的招募动态。实验共布设160片陶片，设置5个采样点位，每个点位布设32片陶片，采用空间嵌套设计方案。其中3个为潜在受干扰点位（2个位于布朗湾（Brown Bay），1个位于香农湾（Shannon Bay）），剩余2个为对照点位（位于奥布莱恩湾（O'Brien Bay））。本元数据记录（metadata record）仅描述首次采样时间点获取的实验数据：初始布设完成15个月后，从每个点位采集8片陶片。本实验设计可同时观测陶片上下两面的固着型底上动物招募情况；陶片表面的移动型底上动物样本则另行收集，相关数据将在另一篇元数据记录中单独呈现。观测发现，陶片底面的底上动物招募量较高，而上表面仅出现少量招募。本记录同时关联至ASAC 1100。