J 2018

Environmental and taxonomic controls of carbon and oxygen stable isotope composition in Sphagnum across broad climatic and geographic ranges

GRANATH, Gustaf, Hakan RYDIN, J.L. BALTZER, F. BENGTSSON, N. BONCEK et. al.

Basic information

Original name

Environmental and taxonomic controls of carbon and oxygen stable isotope composition in Sphagnum across broad climatic and geographic ranges

Authors

GRANATH, Gustaf (752 Sweden), Hakan RYDIN (752 Sweden), J.L. BALTZER, F. BENGTSSON, N. BONCEK, L. BRAGAZZA, Z.J. BU, S.J.M CAPORN, E. DORREPAAL, O. GALANINA, M. GAŁKA, A. GANEVA, D.P. GILLIKIN, I. GOIA, N. GONCHAROVA, Michal HÁJEK (203 Czech Republic, guarantor, belonging to the institution), A. HARAGUCHI, L.I. HARRIS, E. HUMPHREYS, Martin JIROUŠEK (203 Czech Republic, belonging to the institution), K. KAJUKAŁO, E. KAROFELD, N.G KORONATOVA, N.P. KOSYKH, Mariusz Grzegorz LAMENTOWICZ (616 Poland), E. LAPSHINA, J. LIMPENS, M. LINKOSALMI, Ma JIN-ZE, M. MAURITZ, T.M. MUNIR, S.M. NATALI, R. NATCHEVA, M. NOSKOVA, R.J. PAYNE, K. PILKINGTON, S. ROBINSON, B.J.M. ROBROEK, L. ROCHEFORT, D. SINGER, H.K. STENØIEN, E.S. TUITTILA, K. VELLAK, A. VERHEYDEN, J.M. WADDINGTON and S.K. RICE

Edition

Biogeosciences, GOTTINGEN, COPERNICUS GESELLSCHAFT MBH, 2018, 1726-4170

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10511 Environmental sciences

Country of publisher

Germany

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.951

RIV identification code

RIV/00216224:14310/18:00103554

Organization unit

Faculty of Science

UT WoS

000443077000002

Keywords (in Czech)

izotopy; vrchoviště; klima

Keywords in English

MIXED-EFFECTS MODELS; WATER-CONTENT; TESTATE AMEBAS; FUSCUM PEAT; PHOTOSYNTHESIS; CELLULOSE; MOSS; DISCRIMINATION; FRACTIONATION; VARIABILITY

Tags

International impact, Reviewed
Změněno: 23/4/2024 12:25, Mgr. Michal Petr

Abstract

V originále

We analysed two important peat-forming Sphagnum species (S. magellanicum, S. fuscum) samples from 93 sites across North America and Eurasia. There were differences in delta13C values between species. For S. magellanicum delta13C decreased with increasing height above the water table and was positively correlated to productivity. Together these two variables explained 46% of the between-site variation in delta13C values. For S. fuscum, productivity was the only significant predictor of delta13C but had low explanatory power. For delta18O values, approximately 90% of the variation was found between sites. Globally modelled annual delta18O values in precipitation explained 69% of the between-site variation in tissue delta18O. S. magellanicum showed lower delta18O enrichment than S. fuscum. Elevation and climatic variables were weak predictors of tissue delta18O values after controlling for delta18O values of the precipitation. To summarize, our study provides evidence for (a) good predictability of tissue delta18O values from modelled annual delta18O values in precipitation, and (b) the possibility of relating tissue delta13C values to HWT and NPP, but this appears to be species-dependent. These results suggest that isotope composition can be used on a large scale for climatic reconstructions but that such models should be species-specific.