Biomass of Green algae in the northern Wadden Sea at station Sylt_Tonnenleger-Bucht in 1998

At each site species community and algal percent coverage of an area of 50x50 m is determined. To determine biomass, ten replicates samples per site (10x10 cm) are taken by removing the algae from the sediment surface. In the laboratory, biomass (ash free dry weight) of each species within the samples is determined by drying the algae at 75°C for three days followed by ashing at 500°C for six hours.

于每个采样点，对50 m×50 m区域内的物种群落与藻类盖度百分比开展测定。为测定生物量，在每个采样点采集10组10 cm×10 cm的重复样本，采集方式为刮除沉积物表面附着的藻类。在实验室中，通过将样本内的藻类于75℃烘干3天，随后在500℃下灰化6小时的方法，测定样本中各物种的生物量（无灰干重，ash free dry weight）。