Hydrological conditions and carbon accumulation rates reconstructed from a mountain raised bog in the Carpathians: A multi-proxy approach
PBN-AR
Instytucja
Wydział Nauk Geograficznych i Geologicznych (Uniwersytet im. Adama Mickiewicza w Poznaniu)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
CATENA (35pkt w roku publikacji)
ISSN
0341-8162
EISSN
Wydawca
ELSEVIER SCIENCE BV
DOI
URL
Rok publikacji
2017
Numer zeszytu
Strony od-do
57–68
Numer tomu
152
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
1,30
Słowa kluczowe
en
δ13C in Sphagnum Testate amoebae Bulk density Total organic carbon Plant macrofossils Bayesian statistics
Streszczenia
Język
en
Treść
Knowledge of past local to regional climate variability is a priority research area as the magnitude of climate change at these scales can be greater than at the global level. Peatlands are sensitive to hydro-climate change and represent a significant carbon (C) pool in the terrestrial biosphere. Here, we applied a multi-proxy approach (bulk density, loss on ignition, total organic carbon, testate amoebae, δ13C inSphagnum, plantmacrofossils, pollen and charcoal) and Bayesian statistics to a peat sequence from a mountain ombrogenous bog (TăulMuced) to explore how changes in hydrological conditions, peat plant composition and disturbances have affected long-term physical peat properties and the rate of C accumulation over the last ca. 8800 years. We found that C accumulation at this site ranged from 7 to 105 g C m−2 yr−1 (mean 23 ± 14 g C m−2 yr−1). Climatic conditions exerted a direct influence on the peat's plant composition and subsequently affected C accumulation through litter characteristics and abundance, whereas disturbances had a weak effect. Carbon accumulation was greater (31 g C m−2 yr−1) at times of wetter and warmer conditions when Sphagnum was dominant, and lower (17 g C m−2 yr−1) during periods of mixed Sphagnum and vascular plant (mainly sedges) growth under drier/unstable hydrological conditions. Future climate projections of warmer temperatures and greater annual precipitation could therefore positively influence the C sink potential of this peatland. On the other hand, increased anthropogenic pressure in the future may negatively impact the C accumulation. Our study strengthens the geographical coverage of proxy reconstructions of past hydrological variability and highlights the carbon-sink capacity of mountain bogs in a so far understudied region.
Cechy publikacji
discipline:Ekologia
discipline:Geografia
discipline:Geologia
discipline:Ochrona środowiska – dziedzina nauk biologicznych
discipline:Ecology
discipline:Geography
discipline:Geology
discipline:Environmental protection – field of biological sciences
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:793509