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.

Základní údaje

Originální název

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

Autoři

GRANATH, Gustaf (752 Švédsko); Hakan RYDIN (752 Švédsko); 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 Česká republika, garant, domácí); A. HARAGUCHI; L.I. HARRIS; E. HUMPHREYS; Martin JIROUŠEK (203 Česká republika, domácí); K. KAJUKAŁO; E. KAROFELD; N.G KORONATOVA; N.P. KOSYKH; Mariusz Grzegorz LAMENTOWICZ (616 Polsko); 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 a S.K. RICE

Vydání

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

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 3.951

Kód RIV

RIV/00216224:14310/18:00103554

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000443077000002

EID Scopus

2-s2.0-85052703996

Klíčová slova česky

izotopy; vrchoviště; klima

Klíčová slova anglicky

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

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 23. 4. 2024 12:25, Mgr. Michal Petr

Anotace

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.