Historic carbon accumulation rates in four bogs on a north to south transect from Sweden to Germany were calculated by using the bulk densities and carbon concentrations of 1-cm peat layers and a fine-resolution radiocarbon chronology. Carbon accumulation rates were compared to environmental data to explore the effects of climatic factors. Carbon accumulation rates in a period without clear human impact on the bog ecosystems (c.ad 1700–ad 1800) ranged from 25 g C/m2/yr in the most northern site to 50 g C/m2/yr in the southernmost site, which coincided with increasing annual temperatures from north to south. This suggests that temperature or growing season length is a major factor influencing carbon accumulation rates at different geographical sites. The temporal variations in carbon accumulation rates within the sites tentatively suggest that carbon accumulation rates may still increase with further warming in northern peat bogs, but decrease in southern peat bogs.
BelyeaLRClymoRS (2001) Feedback control of the rate of peat formation. Proceedings of the Royal Society of London. Series B: Biological Sciences268: 1315–1321.
2.
BelyeaLRMalmerN (2004) Carbon sequestration in peatland: Patterns and mechanisms of response to climate change. Global Change Biology10: 1043–1052.
3.
BlaauwMHeuvelinkGBMMauquoyD. (2003) A numerical approach to 14C wiggle-match dating of organic deposits: Best fits and confidence intervals. Quaternary Science Reviews22: 1485–1500.
4.
BlaauwMvan GeelBMauquoyD. (2004) Carbon-14 wiggle-match dating of peat deposits: Advantages and limitations. Journal of Quaternary Science19: 177–181.
5.
BorrenWBleutenWLapshinaED (2004) Holocene peat and carbon accumulation rates in the southern taiga of western Siberia. Quaternary Research61: 42–51.
6.
BragazzaL (2008) A climatic threshold triggers the die-off of peat mosses during an extreme heat wave. Global Change Biology14: 2688–2695.
7.
BreeuwerAHeijmansMMPDRobroekBJM. (2008a) The effect of increased temperature and nitrogen deposition on decomposition in bogs. Oikos117: 1258–1268.
8.
BreeuwerAHeijmansMMPDRobroekBJM. (2008b) The effect of temperature on growth and competition between Sphagnum species. Oecologia156: 155–167.
9.
BreeuwerAHeijmansMMPDRobroekBJM. (2010) Field simulation of global change: Transplanting northern bog mesocosms southward. Ecosystems13: 712–726.
10.
BriffaKRvan der SchrierGJonesPD (2009) Wet and dry summers in Europe since 1750: Evidence of increasing drought. International Journal of Climatology29: 1894–1905.
11.
CharmanDJBlundellA and ACCROTELM-members (2007) A pan-European testate amoebae transfer function for palaeohydrological reconstruction on ombrotrophic peatlands. Journal of Quaternary Science22: 209–221.
12.
CharmanDBeilmanDWBlaauwM. (2013) Carbon-related changes in peatland carbon accumulation during the last millennium. Biogeosciences10: 929–944.
13.
ClymoRS (1984) The limits to peat bog growth. Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences303: 605–654.
14.
ClymoRSHaywardPM (1982) The ecology of Sphagnum. In: SmithAJE (ed.) Bryophyte Ecology. London: Chapman & Hall, pp. 229–289.
15.
ClymoRSTurunenJTolonenK (1998) Carbon accumulation in peatland. Oikos81: 368–388.
16.
DanielsREEddyA (1985) Handbook of European Sphagna. London: HMSO.
17.
DorrepaalEAertsRCornelissenJHC. (2003) Summer warming and increased winter snow cover affect Sphagnum fuscum growth, structure and production in a sub-arctic bog. Global Change Biology10: 93–104.
18.
FranzénLG (2006) Increased decomposition of subsurface peat in Swedish raised bogs: Are temperate peatlands still net sinks of carbon?Mires and Peat3: 1–16.
19.
GerdolRVicentiniR (2011) Response to heat stress of populations of two Sphagnum species from alpine bogs at different altitudes. Environmental and Experimental Botany74: 22–30.
20.
GerdolRBragazzaLBrancaleoniL (2008) Heatwave 2003: High summer temperature, rather than experimental fertilization, affects vegetation and CO2 exchange in an alpine bog. New Phytologist179: 142–154.
21.
GoodsiteMERomWHeinemeierJ. (2001) High-resolution AMS 14C dating of post-bomb peat archives of atmospheric pollutants. Radiocarbon43: 495–515.
22.
GorhamE (1991) Northern peatlands – Role in the carbon-cycle and probable responses to climatic warming. Ecological Applications1: 182–195.
23.
GunnarssonU (2005) Global patterns of Sphagnum productivity. Journal of Bryology27: 269–279.
24.
HeijmansMMPDMauquoyDvan GeelB. (2008) Long-term effects of climate change on vegetation and carbon dynamics in peat bogs. Journal of Vegetation Science19: 307–320.
25.
HeijmansMMPDvanderKnaapYAMHolmgrenM. (2013) Persistent versus transient tree encroachment of temperate peat bogs: Effects of climate warming and drought events. Global Change Biology19: 2240–2250.
26.
HobbieSE (1996) Temperature and plant species control over litter decomposition in Alaskan tundra. Ecological Monographs66: 503–522.
27.
JohnssonLCDammanAWH (1991) Species-controlled Sphagnum decay on a South Swedish raised bog. Oikos6: 234–242.
28.
KilianMRvan GeelBvan der PlichtJ (2000) 14C AMS wiggle matching of raised bog deposits and models of peat accumulation. Quaternary Science Reviews19: 1011–1033.
29.
LevinIHesshaimerV (2000) Radiocarbon, the unique tracer of global carbon cycle dynamics. Radiocarbon42: 69–80.
30.
LevinIKromerBSchoch-FischerH. (1994) Delta 14CO2 records from two sites in central Europe. In: BodenTAKaiserDPSepanskiRJ. (eds) Trends 93: A Compendium of Data on Global Change. Oak Ridge, TN: Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, pp. 203–222.
31.
Loisel. (2014) A database and synthesis of northern peatland soil properties and Holocene carbon and nitrogen accumulation. The Holocene. DOI: 10.1177/0959683614538073.
32.
MalmerNWallénB (2004) Input rates, decay losses and accumulation rates of carbon in bogs during the last millennium: Internal processes and environmental changes. The Holocene14: 111–117.
33.
NilssonMKlarqvistMBohlinE. (2001) Variation in C-14 age of macrofossils and different fractions of minute peat samples dated by AMS. The Holocene11: 579–586.
34.
OhlsonMOklandRH (1998) Spatial variation in rates of carbon and nitrogen accumulation in a boreal bog. Ecology79: 2745–2758.
35.
RobroekBJMLimpensJBreeuwerA. (2007) Effects of water level and temperature on performance of four Sphagnum mosses. Plant Ecology190: 97–107.
36.
RydinHJeglumJ (2006) The Biology of Peatlands, Biology of Habitats. Oxford: Oxford University Press, pp. 1–333.
37.
RydinHSjörsHLöfrothM (1999) Mires. In: RydinHSnoeijsPDiekmannM (eds) Swedish Plant Geography. Uppsala: TK-Tryck, pp. 91–112.
38.
StuiverMReimerPJBraziunasTF (1998) High-precision radiocarbon age calibration for terrestrial and marine samples. Radiocarbon40: 1127–1151.
39.
TurunenJ (2003) Past and present carbon accumulation in undisturbed boreal and subarctic mires: A review. Suoseura54: 15–28.
40.
TurunenJTomppoETolonenK. (2002) Estimating carbon accumulation rates of undrained mires in Finland – Application to boreal and subarctic regions. The Holocene12: 69–80.
41.
Van der LindenMVan GeelB (2006) Late-Holocene climate change and human impact recorded in a south Swedish ombrotrophic peat bog. Palaeogeography, Palaeoclimatology, Palaeoecology240: 649–667.
42.
Van der LindenMBarkeJVickeryE. (2008a) Late Holocene human impact and climate change recorded in a north Swedish peat deposit. Palaeogeography, Palaeoclimatology, Palaeoecology258: 1–27.
43.
Van der LindenMBroekensPVickeryE. (2008b) Vegetation history and human impact during the last 300 years recorded in a German peat deposit. Review of Palaeobotany and Palynology152: 158–175.
44.
Van der LindenMVickeryECharmanDJ. (2008c) Effects of human impact and climate change during the last 350 years recorded in a Swedish raised bog deposit. Palaeogeography, Palaeoclimatology, Palaeoecology262: 1–31.
45.
WallénBFalkengren-GrerupUMalmerN (1988) Biomass, productivity and relative rate of photosynthesis of Sphagnum at different water levels on a south Swedish peat bog. Holarctic Ecology11: 70–76.
46.
WardenaarECP (1987) A new handtool for cutting soil monoliths. Canadian Journal for Soil Sciences67: 405–407.
47.
YuZ (2013) Holocene carbon flux histories of the world’s peatlands: Global carbon-cycle implications. Holocene21: 761–774.
48.
YuZCLoiselJBrosseauDP. (2010) Global peatland dynamics since the last glacial maximum. Geophysical Research Letters37: L13402. DOI: 10.1029/2010GL043584.
