ニーオルスン氷河後退域モレーン上の植生群落動態

概要

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A plant community on a moraine at the deglaciated front of East Brogger glacier in Ny-Alesund, Spitsbergen, Svalbard archipelago and composed primarily of bryophytes was studied to clarify the vegetation dynamics in polar region. We studied the vegetation on the moraine using the quadrat method along a line transect from the edge of the glacier to a point 850m downstream, and recorded cover (%) of species observed in each quadrat. No significant difference can be found along the line transect in hydrogen-ion concentration (pH) and electric conductivity (EC) in soils. The number of species tended to increase with increasing distance from glacier edge, but there was no visible change at the central part of moraine. Gradients of equitability (Ec) and dominance concentration (Simpson Index: C) were shown along the line transect, so it was considered that diversity of moraine community was approximately increasing in the downstream direction of the moraine. However, it was also understood that importance value concentrated to dominant species at the central part of moraine.
日本蘚苔類学会の論文
1995-08-31