Reciprocal transplant of mosses from Arctic tundra to alpine tundra and associated N2 fixation rates

In the summer of 2018, 12 cores were taken at Toolik Field Station. Six of those cores were retransplanted into their home environment, while six we transplanted to Eight Mile Lake. At Eight Mile Lake, the same procedure was followed. One year later, these transplants were revisited and associated N2 fixation rates were measured for Hylocomium splendens, Pleurozium scheberi and Aulacomnium turgidum using 15N2 gas incubations.

2018年夏季，研究人员在图利克野外站（Toolik Field Station）采集了12份岩芯样品。其中6份岩芯被重新移植回其原生环境，余下6份被移植至八英里湖（Eight Mile Lake）。在八英里湖区域，亦遵循了相同的移植流程。一年后，研究人员对这批移植样品进行了回访，并采用15N2气体培养法，针对华丽羽枝藓（Hylocomium splendens）、施氏拟垂枝藓（Pleurozium scheberi）与胀蒴仙鹤藓（Aulacomnium turgidum）测定了其相关固氮速率。