Balance or Imbalance of a Raised Bog in a Changing Environment?

Authors:
Ulla Kokfelt, Mats Rundgren

Book:
Proceedings of the 14th International Peat Congress

Venue:
Stockholm

Keywords:
c-accumulation, late-holocene, peat, recurrence-surfaces, store-mosse

Documentfile:
Kokfelt, Rundgren 2012: Balance or Imbalance of a Raised Bog in a Changing Environment?

Summary:

Theme I.  Inventory, stratigraphy and conservation of mires and peatlands

SUMMARY

Based on high resolution analyses of bulk density, carbon (C) content and a detailed radiocarbon dating program, we examined changes in C accumulation across two late Holocene bog ecosystem transitions evidenced by clearly visible recurrence surfaces (RY´s) around 1000 and 2800 cal BP in a peat sequence from Store Mosse in southern Sweden. The results revealed large differences in the rate of change across the respective transitions. Hence, whereas a gradual increase in C accumulation was found across the lower RY as part of a generally increasing trend, abrupt and significant short term changes were detected across the upper RY.