NDLI: Stable C and N isotope values of selected components of a tropical australian sugarcane ecosystem

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Stable C and N isotope values of selected components of a tropical australian sugarcane ecosystem

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Biology and Fertility of Soils : Volume 24, Issue 2, February 1997

Stable C and N isotope values of selected components of a tropical australian sugarcane ecosystem

Content Provider	Springer Nature Link
Author	Spain, A. Feuvre, R.
Copyright Year	1997
Abstract	The δ13C and δ15N values of sugarcane plant tissues, decomposing harvest residues, soil and the casts and body tissues of the earthwormPontoscolex corethrurus were determined. Little variation in δ13C values was found between plant parts. The δ13C values of the decomposing harvest residues declined and became more variable after 148 days of exposure in the field. In the decomposing residues, δ13C values of the neutral detergent fibre fraction were similar to those of the whole tissues while those of the proximate lignin were more negative. The δ15N values of the residues also declined over time after a short initial delay.P. corethrurus populations are more intimately associated with the roots of sugarcane than with the bulk soil. Tissue δ13C values suggest that the earthworm diet is similar to or more enriched in13C than sugarcane tissues and is substantially more enriched than the soil C. Earthworm tissues have similar levels of15N enrichment to both the soil and plant tissues. These data are consistent with the hypothesis that this earthworm derives much of its assimilated C relatively directly from organic matter associated with the roots and decomposing harvest residues.
Starting Page	118
Ending Page	122
Page Count	5
File Format	PDF
ISSN	01782762
Journal	Biology and Fertility of Soils
Volume Number	24
Issue Number	1
e-ISSN	14320789
Language	English
Publisher	Springer-Verlag
Publisher Date	1997-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sugarcane Stable isotopes Harvest residues Pontoscolex corethrurus C4 species Agriculture Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Agronomy and Crop Science Soil Science Microbiology

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