Organic vs. Conventional Grassland Management: Do 15N and 13C Isotopic Signatures of Hay and Soil Samples Differ?

Distinguishing organic and conventional products is a major issue of food security and authenticity. Previous studies successfully used stable isotopes to separate organic and conventional products, but up to now, this approach was not tested for organic grassland hay and soil. Moreover, isotopic ab...

Full description

Bibliographic Details
Main Authors:	Klaus, Valentin H., Hölzel, Norbert, Prati, Daniel, Schmitt, Barbara, Schöning, Ingo, Schrumpf, Marion, Fischer, Markus, Kleinebecker, Till
Format:	Online
Language:	English
Published:	Public Library of Science 2013
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3808290/

id	pubmed-3808290
recordtype	oai_dc
spelling	pubmed-38082902013-11-07 Organic vs. Conventional Grassland Management: Do 15N and 13C Isotopic Signatures of Hay and Soil Samples Differ? Klaus, Valentin H. Hölzel, Norbert Prati, Daniel Schmitt, Barbara Schöning, Ingo Schrumpf, Marion Fischer, Markus Kleinebecker, Till Research Article Distinguishing organic and conventional products is a major issue of food security and authenticity. Previous studies successfully used stable isotopes to separate organic and conventional products, but up to now, this approach was not tested for organic grassland hay and soil. Moreover, isotopic abundances could be a powerful tool to elucidate differences in ecosystem functioning and driving mechanisms of element cycling in organic and conventional management systems. Here, we studied the δ15N and δ13C isotopic composition of soil and hay samples of 21 organic and 34 conventional grasslands in two German regions. We also used Δδ15N (δ15N plant - δ15N soil) to characterize nitrogen dynamics. In order to detect temporal trends, isotopic abundances in organic grasslands were related to the time since certification. Furthermore, discriminant analysis was used to test whether the respective management type can be deduced from observed isotopic abundances. Public Library of Science 2013-10-25 /pmc/articles/PMC3808290/ /pubmed/24205126 http://dx.doi.org/10.1371/journal.pone.0078134 Text en © 2013 Klaus et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Klaus, Valentin H. Hölzel, Norbert Prati, Daniel Schmitt, Barbara Schöning, Ingo Schrumpf, Marion Fischer, Markus Kleinebecker, Till
spellingShingle	Klaus, Valentin H. Hölzel, Norbert Prati, Daniel Schmitt, Barbara Schöning, Ingo Schrumpf, Marion Fischer, Markus Kleinebecker, Till Organic vs. Conventional Grassland Management: Do 15N and 13C Isotopic Signatures of Hay and Soil Samples Differ?
author_facet	Klaus, Valentin H. Hölzel, Norbert Prati, Daniel Schmitt, Barbara Schöning, Ingo Schrumpf, Marion Fischer, Markus Kleinebecker, Till
author_sort	Klaus, Valentin H.
title	Organic vs. Conventional Grassland Management: Do 15N and 13C Isotopic Signatures of Hay and Soil Samples Differ?
title_short	Organic vs. Conventional Grassland Management: Do 15N and 13C Isotopic Signatures of Hay and Soil Samples Differ?
title_full	Organic vs. Conventional Grassland Management: Do 15N and 13C Isotopic Signatures of Hay and Soil Samples Differ?
title_fullStr	Organic vs. Conventional Grassland Management: Do 15N and 13C Isotopic Signatures of Hay and Soil Samples Differ?
title_full_unstemmed	Organic vs. Conventional Grassland Management: Do 15N and 13C Isotopic Signatures of Hay and Soil Samples Differ?
title_sort	organic vs. conventional grassland management: do 15n and 13c isotopic signatures of hay and soil samples differ?
description	Distinguishing organic and conventional products is a major issue of food security and authenticity. Previous studies successfully used stable isotopes to separate organic and conventional products, but up to now, this approach was not tested for organic grassland hay and soil. Moreover, isotopic abundances could be a powerful tool to elucidate differences in ecosystem functioning and driving mechanisms of element cycling in organic and conventional management systems. Here, we studied the δ15N and δ13C isotopic composition of soil and hay samples of 21 organic and 34 conventional grasslands in two German regions. We also used Δδ15N (δ15N plant - δ15N soil) to characterize nitrogen dynamics. In order to detect temporal trends, isotopic abundances in organic grasslands were related to the time since certification. Furthermore, discriminant analysis was used to test whether the respective management type can be deduced from observed isotopic abundances.
publisher	Public Library of Science
publishDate	2013
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3808290/
_version_	1612020739387424768

Organic vs. Conventional Grassland Management: Do 15N and 13C Isotopic Signatures of Hay and Soil Samples Differ?

Similar Items