Taxa specific macrofauna biomass in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85)

During PS85 (in 2014) taxa specific macrofauna biomass was determined. Sediment from MUC recovered sediment cores and from the benthic chambers was used for macrofauna taxonomical identification and biomass determination. For these macrofauna analyses only the 0-5 cm horizon from MUC sediment cores and the entire sediment from the benthic chambers was used, sieved over a 500 µm mesh and stored in borax buffered 4 % formaldehyde and stained with Rose Bengal (Heip et al., 1985). Afterwards, macrofauna taxa were identified to the highest taxonomic level and weighted (blotted wet weight).

2014年PS85航次期间，研究人员完成了类群特异性大型底栖生物（macrofauna）生物量的测定工作。实验所用沉积物样品取自多管沉积物采样器（Multiple Corer, MUC）获取的沉积物岩芯，以及底栖舱（benthic chambers）采集的样品，用于大型底栖生物的分类鉴定与生物量测定。本次大型底栖生物分析仅选取MUC沉积物岩芯的0-5 cm层位样品，以及底栖舱的全部沉积物样品；所有样品经500 μm孔径筛网筛分后，保存于硼砂缓冲的4%甲醛溶液中，并以玫瑰红（Rose Bengal）染色（Heip等，1985）。后续实验中，研究人员将大型底栖生物类群鉴定至最高分类阶元，并测定其吸去表面水分后的湿重（blotted wet weight）。