Species point records from 1990 NRA Newtown Harbour sublittoral survey

The 1990 Rivers Survey includes a quality classification of estuaries to provide a simple assessment of estuarine quality based on dissolved oxygen, aesthetic criteria, and simple biological observations. In an attempt to satisfy the requirements for the biological part of the classification, the sampling was carried out by the NRA Southern Region and samples passed on to Southampton University for infaunal and sediment analysis. Two 0.1m2 surface area grab samples were taken from each site, and sieved through a 1mm screen. Each sample was preserved in 5-8% saline formaldehyde solution. Duplicate samples were taken for particle size and chemical analysis.

1990年河流调查涵盖了河口质量分类，旨在基于溶解氧、审美标准以及简单的生物观察，对河口质量进行简易评估。为满足分类中生物学部分的需求数据，采样工作由NRA南方区域执行，并收集的样本随后被送至南安普顿大学进行底栖生物和沉积物分析。在每个采样点，采集了两个面积为0.1平方米的表层样，并通过1毫米的筛网进行筛选。每个样本均采用5-8%的盐水福尔马林溶液进行保存。同时，为了进行颗粒大小和化学分析，还采集了重复样本。