Abundance of macrobenthos organisms in the northern Wadden Sea in 2008

At each site we analyse the species occurrence by taking 20 replicate samples of 20x20 cm (20 cm depth).

针对每个采样位点，我们通过采集20组重复的20 cm×20 cm（采样深度为20 cm）样本，开展物种出现情况的分析工作。