| Popis: |
Sections and profiles investigated at Sermermiut, western Greenland (69°12′N, 51 °08′W) illustrate the plant succession during the last 3,000 years. By means of palynology and determination of macrofossils the following succession is deduced: a seashore with Elymus and Stellaria humifusa ; a grass-mat dominated by Alopecurus alpinus ; a Betula nana heath; a Salix glauca scrub; a Sphagnum squarrosum bog with a number of hydrophilous species; a grass-mat with dwarf shrubs; a Sphagnum squarrosum bog; and, after a lacuna, the present moss-carpet. A series of radiocarbon datings has shown that the humid conditions responsible for the change into the first Sphagnum bog was contemporaneous with RY III in northwestern Europe (about 600 B.C.), while the second growth of Sphagnum starts about A.D. 400 (RY II). |
