Melting sea ice for taxonomic analysis: a comparison of four melting procedures

Polar research

Ditte Marie Mikkelsen¹  Anzdrej Witkowski² 

[1] Greenland Institute of Natural Resources, PO Box 570, DK-3900, Nuuk, GreenlandCorrespondence;University of Szczecin, Waska 13, PL-71-475 Szczecin, Poland

关键词: Buffer;    diatoms;    direct melt;    flagellates;    osmotic stress;    sea ice;   

DOI  :  10.3402/polar.v29i3.6088

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

The influence of four melting procedures on the taxonomic composition of the sea-ice algal community in Kobbefjord, south-west Greenland, was investigated in April 2008. Direct melting (at 4 and 20°C) was compared with melting in buffering seawater (with salinities of 10 and 30). The sea-ice algal community consisted of diatoms, cysts and several flagellate groups. Direct melting at 20°C differed significantly from one or more of the other melting procedures regarding the flagellate groups chrysophytes, chlorophytes, dinoflagellates and unidentified flagellates, whereas diatom, cyst and cryptophyte abundance was similar, regardless of the melting procedure. Apart from chrysophytes, the three other melting procedures (direct melting at 4°C and buffered in seawater with salinities of 10 and 30) were not statistically different. It is recommended that direct melting at 20°C is avoided, whereas the three slow melting procedures are all comparable. This will enable the future comparison of data from a wide geo...

【 授权许可】

CC BY-NC