Water Framework Directive (WFD) benthos Monitoring (Ireland)

A requirement of the Water Framework Directive is that benthic macro-invertebrates must be sampled from coastal and transitional waters at least twice within a river basin cycle (6 years) in order to Classify these waterbodies. Numerous samples will be taken from sites in matched habitats throughout the water body. Sampling and analysis is carried out according to established protocols. The Directive requires the monitoring of nominated coastal and transitional waters for benthic macro-invertebrates. This includes the field sampling, processing and analysis of samples. In addition, grab samples have been taken on vessels of opportunity and are considered suitable to fulfill obligations under the WFD. For each grab sample collected this Dataset contains: — Lists and Abundance of benthic species > 1 mm, —sediment Particle size analysis (PSA), —Folk (1954) sediment classification, —and an Estimate of organic matter (LOI).《水框架指令》（Water Framework Directive）明确要求：为完成水体分类工作，需在每个流域周期（6年）内，从沿海与过渡水域中至少采集两次底栖大型无脊椎动物（benthic macro-invertebrates）样本。研究团队将在整片水域的匹配生境点位采集大量样本，采样与分析工作均严格遵循既定规范开展。 该指令同时要求对指定沿海及过渡水域的底栖大型无脊椎动物开展监测，工作范畴涵盖样本的野外采集、实验室预处理与分析。此外，通过机遇采样船舶采集的抓斗样本被认定可满足《水框架指令》（WFD）项下的履约义务要求。 本数据集涵盖每一份采集的抓斗样本的如下信息： — 粒径大于1毫米的底栖物种名录及其丰度数据 — 沉积物粒径分析（Particle size analysis, PSA）结果 — 福克（1954）沉积物分类法判定结果 — 有机质烧失量（Loss on Ignition, LOI）估算值