The abundance of natural nitrogen 15 in the organic matter of soils along an altitudinal gradient (chablais, haute savoie, France)

Mariotti, André; Pierre, Daniel; Védy, J.-C.; Bruckert, S.; Guillemot, Joannès

doi:10.1016/0341-8162(80)90014-4

Cited by 104 publications

(66 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Values of δ 15 N increased with depth, as has been observed before (e.g. Mariotti et al, 1980;Baisden et al, 2002b), and were on average 1.7‰ (s.d. ±0.8‰) larger in the mOM fraction.…”

Section: Resultssupporting

confidence: 82%

Relative stability of soil carbon revealed by shifts in δ<sup>15</sup>N and C:N ratio

Conen

Zimmermann

Leifeld³

et al. 2008

Biogeosciences

View full text Add to dashboard Cite

Abstract. Life on earth drives a continuous exchange of carbon between soils and the atmosphere. Some forms of soil carbon, or organic matter, are more stable and have a longer residence time in soil than others. Relative differences in stability have often been derived from shifts in δ 13 C (which is bound to a vegetation change from C3 to C4 type) or through 14 C-dating (which is bound to small sample numbers because of high measurement costs). Here, we propose a new concept based on the increase in δ 15 N and the decrease in C:N ratio with increasing stability. We tested the concept on grasslands at different elevations in the Swiss Alps. Depending on elevation and soil depth, it predicted mineral-associated organic carbon to be 3 to 73 times more stable than particulate organic carbon. Analysis of 14 C-ages generally endorsed these predictions.

show abstract

Section: Resultssupporting

confidence: 82%

Relative stability of soil carbon revealed by shifts in δ<sup>15</sup>N and C:N ratio

Conen

Zimmermann

Leifeld³

et al. 2008

Biogeosciences

View full text Add to dashboard Cite

show abstract

“…compounds of the humus results in a depthdependent gradient in the isotopic composition in undisturbed forest soils, with organic matter from the mineral soil being more enriched in "&N than that from the organic layer (Mariotti et al, 1980 ;Nadelhoffer & Fry, 1988 ;Gebauer & Schulze, 1991).…”

Section: mentioning

confidence: 99%

¹⁵N natural abundance in fruit bodies of different functional groups of fungi in relation to substrate utilization

1999

View full text Add to dashboard Cite

Natural abundances of "&N and N concentrations of 34 fruit bodies from 24 species of ectomycorrhizal and saprophytic fungi were measured in a temperate Central European mixed forest stand. The fungi of the two life forms are known to be capable of utilizing different types of N sources (organic N compounds from the humus, inorganic N from the soil and N from litter or wood) differing by their "&N natural abundance values. Based on the two life forms and the three different N sources, four functional groups of fungi were distinguished : (1) ectomycorrhizal fungi capable of utilizing organic N from the humus ; (2) ectomycorrhizal fungi known to depend on inorganic N compounds in the soil ; (3) saprophytes capable of utilizing organic N from the humus ; and (4) saprophytes utilizing N from dead wood or litter. Large differences were found between species in the δ"&N values (k3n0 to 3n3=) and in the N concentrations (0n84 to 6n61 mmol eq N g dw −" ) of the fruit bodies. In most cases fungi were more enriched in "&N than their respective bulk N source was. Fungi living in humus, and presumably having access to organic N compounds (groups 1 and 3), were significantly more enriched in "&N than fungi which are known to depend on inorganic N (e.g. Laccaria, group 2), or fungi living on litter or wood (group 4), irrespective of whether they were ectomycorrhizal or saprophytic species. Fungi living in humus had significantly higher N concentrations than fungi living on litter or wood.

show abstract

“…The magnitude of these changes is a function of the degree of completion of the reaction involved-and the intensity of the isotope effect of each particular reaction (Mariotti 1982 Mariotti et al 1980). Further.…”

mentioning

confidence: 99%

CHANGES IN NATURAL ¹⁵N ABUNDANCE OF SOILS ASSOCIATED WITH TILLAGE PRACTICES

Selles¹,

Karamanos²,

Bowren³

1984

Can. J. Soil. Sci.

View full text Add to dashboard Cite

The objective of this study was to determine changes in N dynamics in an Orthic Black Chernozem as a result of two tillage practices (conventional and zero tillage) using the variations in the natural 15N abundance of different soil-N fractions. After 14 yr, no significant differences in isotope composition of total soil-N between the two tillage practices could be found. However, changes were detected in the natural 15N abundance of the acid-hydrolyzable N and various organo-mineral size fractions which led to useful comparisons of the nature of N under the two systems. The N-content of the hydrolyzable-N fraction was similar at the 0- to 4- and 8- to 16-cm depth under both tillage practices, while it was significantly different at the 4- to 8-cm depth. The δa15N of this fraction was consistently higher than that of total soil N at all depths only under zero tillage. This was associated with the presence of more labile N compounds under zero tillage. No differences in the isotopic composition of the organomineral size fractions were found at the 0- to 4-cm depth. At the 4- to 8- and 8- to 16-cm depths, the δa15N values of the finer particle size fractions were higher under zero tillage than under conventional tillage. This indicates a more labile nature of the N associated with these size fractions under zero tillage. Key words: δa15N, conventional tillage, zero tillage, total N, acid-hydrolyzable fraction, particle size fractions

show abstract

The abundance of natural nitrogen 15 in the organic matter of soils along an altitudinal gradient (chablais, haute savoie, France)

Cited by 104 publications

References 7 publications

Relative stability of soil carbon revealed by shifts in δ<sup>15</sup>N and C:N ratio

Relative stability of soil carbon revealed by shifts in δ<sup>15</sup>N and C:N ratio

¹⁵N natural abundance in fruit bodies of different functional groups of fungi in relation to substrate utilization

CHANGES IN NATURAL ¹⁵N ABUNDANCE OF SOILS ASSOCIATED WITH TILLAGE PRACTICES

Contact Info

Product

Resources

About

The abundance of natural nitrogen 15 in the organic matter of soils along an altitudinal gradient (chablais, haute savoie, France)

Cited by 104 publications

References 7 publications

Relative stability of soil carbon revealed by shifts in δ&lt;sup&gt;15&lt;/sup&gt;N and C:N ratio

Relative stability of soil carbon revealed by shifts in δ&lt;sup&gt;15&lt;/sup&gt;N and C:N ratio

15N natural abundance in fruit bodies of different functional groups of fungi in relation to substrate utilization

CHANGES IN NATURAL 15N ABUNDANCE OF SOILS ASSOCIATED WITH TILLAGE PRACTICES

Contact Info

Product

Resources

About

Relative stability of soil carbon revealed by shifts in δ<sup>15</sup>N and C:N ratio

Relative stability of soil carbon revealed by shifts in δ<sup>15</sup>N and C:N ratio

¹⁵N natural abundance in fruit bodies of different functional groups of fungi in relation to substrate utilization

CHANGES IN NATURAL ¹⁵N ABUNDANCE OF SOILS ASSOCIATED WITH TILLAGE PRACTICES