Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  An isotopic method for testing the influence of leaf litter quality on carbon fluxes during decomposition

Rubino, M., Lubritto, C., D'onofrio, A., Terrasi, F., Gleixner, G., & Cotrufo, M. F. (2007). An isotopic method for testing the influence of leaf litter quality on carbon fluxes during decomposition. Oecologia, 154(1), 155-166. doi:10.1007/s00442-007-0815-y.

Item is

Dateien

einblenden: Dateien
ausblenden: Dateien
:
BGC1033.pdf (Verlagsversion), 376KB
 
Datei-Permalink:
-
Name:
BGC1033.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Eingeschränkt (Max Planck Institute for Biogeochemistry, MJBK; )
MIME-Typ / Prüfsumme:
application/octet-stream
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Rubino, M., Autor
Lubritto, C., Autor
D'onofrio, A., Autor
Terrasi, F., Autor
Gleixner, G.1, Autor           
Cotrufo, M. F., Autor
Affiliations:
1Molecular Biogeochemistry Group, Dr. G. Gleixner, Department Biogeochemical Processes, Prof. E.-D. Schulze, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497773              

Inhalt

einblenden:
ausblenden:
Schlagwörter: Pyrolysis-gas chromatography Mass spectrometry-combustion interface-isotope ratio mass spectrometry Respiration rates Soil carbon input Stable carbon isotopes Thermogravimetry Long-term decomposition Soil organic-matter Scots pine forest CO2 enrichment Elevated CO2 Rates c-13 Fractionation Turnover Dynamics
 Zusammenfassung: During microbial breakdown of leaf litter a fraction of the C lost by the litter is not released to the atmosphere as CO2 but remains in the soil as microbial byproducts. The amount of this fraction and the factors influencing its size are not yet clearly known. We performed a laboratory experiment to quantify the flow of C from decaying litter into the soil, by means of stable C isotopes, and tested its dependence on litter chemical properties. Three sets of C-13-depleted leaf litter (Liquidambar styraciflua L., Cercis canadensis L. and Pinus taeda L.) were incubated in the laboratory in jars containing C-13-enriched soil (i.e. formed C4 vegetation). Four jars containing soil only were used as a control. Litter chemical properties were measured using thermogravimetry (Tg) and pyrolysis-gas chromatography/mass spectrometry-combustion interface-isotope ratio mass spectrometry (Py-GC/MS-C-IRMS). The respiration rates and the delta C-13 of the respired CO2 were measured at regular intervals. After 8 months of incubation, soils incubated with both L. styraciflua and C. canadensis showed a significant change in delta C-13 (delta C-13(final) = -20.2 +/- 0.4 parts per thousand and -19.5 +/- 0.5 parts per thousand, respectively) with respect to the initial value (delta C-13(initial) = -17.7 +/- 0.3 parts per thousand); the same did not hold for soil incubated with P. taeda (delta C-13(final:)-18.1 +/- 0.5 parts per thousand). The percentages of litter-derived C in soil over the total C loss were not statistically different from one litter species to another. This suggests that there is no dependence of the percentage of C input into the soil (over the total C loss) on litter quality and that the fractional loss of leaf litter C is dependent only on the microbial assimilation efficiency. The percentage of litter-derived C in soil was estimated to be 13 +/- 3% of total C loss. [References: 52]

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2007
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1007/s00442-007-0815-y
Anderer: BGC1033
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Oecologia
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Berlin : Springer-Verlag.
Seiten: - Band / Heft: 154 (1) Artikelnummer: - Start- / Endseite: 155 - 166 Identifikator: CoNE: https://pure.mpg.de/cone/journals/resource/1000000000265440
ISSN: 0029-8549