Advanced

Vesicular-arbuscular mycorrizae for dating multiple paleosols and carbon loss rate determination

Holmqvist, Johan LU and Schlyter, P (2000) In Geoderma 97(1-2). p.125-133
Abstract
A promising technique for dating paleosols is reported based on radiocarbon (C-14) dating of asexual spores from vesicular-arbuscular mycorrizae (VAM). The soils are dispersed in water and some 6000-8000 spores separated by hand picking under a low power microscope. The dried spores are then dated by accelerator mass spectroscopy (AMS). A chronosequense of closely superimposed paleosols from an arctic/alpine meadow soil, northern Sweden, was dated and the long-term (i.e., over a millennium time-span) organic carbon loss rate determined. A very low carbon loss rate was obtained, 4.7 x 10(-4) +/- 9.2 x 10(-5) year(-1). It is argued that this approach is likely to give a better estimate for long-term loss than litter-bag studies covering a... (More)
A promising technique for dating paleosols is reported based on radiocarbon (C-14) dating of asexual spores from vesicular-arbuscular mycorrizae (VAM). The soils are dispersed in water and some 6000-8000 spores separated by hand picking under a low power microscope. The dried spores are then dated by accelerator mass spectroscopy (AMS). A chronosequense of closely superimposed paleosols from an arctic/alpine meadow soil, northern Sweden, was dated and the long-term (i.e., over a millennium time-span) organic carbon loss rate determined. A very low carbon loss rate was obtained, 4.7 x 10(-4) +/- 9.2 x 10(-5) year(-1). It is argued that this approach is likely to give a better estimate for long-term loss than litter-bag studies covering a couple of decades. (C) 2000 Elsevier Science B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
degradation, organic carbon, paleosols, radiocarbon dating, soil
in
Geoderma
volume
97
issue
1-2
pages
125 - 133
publisher
Elsevier
external identifiers
  • wos:000088061500007
  • scopus:0033949019
ISSN
0016-7061
DOI
10.1016/S0016-7061(00)00030-6
language
English
LU publication?
yes
id
5d3df2b6-7794-4602-aa74-f694b3d574f1 (old id 3917392)
date added to LUP
2013-07-03 14:28:46
date last changed
2017-01-01 07:17:14
@article{5d3df2b6-7794-4602-aa74-f694b3d574f1,
  abstract     = {A promising technique for dating paleosols is reported based on radiocarbon (C-14) dating of asexual spores from vesicular-arbuscular mycorrizae (VAM). The soils are dispersed in water and some 6000-8000 spores separated by hand picking under a low power microscope. The dried spores are then dated by accelerator mass spectroscopy (AMS). A chronosequense of closely superimposed paleosols from an arctic/alpine meadow soil, northern Sweden, was dated and the long-term (i.e., over a millennium time-span) organic carbon loss rate determined. A very low carbon loss rate was obtained, 4.7 x 10(-4) +/- 9.2 x 10(-5) year(-1). It is argued that this approach is likely to give a better estimate for long-term loss than litter-bag studies covering a couple of decades. (C) 2000 Elsevier Science B.V. All rights reserved.},
  author       = {Holmqvist, Johan and Schlyter, P},
  issn         = {0016-7061},
  keyword      = {degradation,organic carbon,paleosols,radiocarbon dating,soil},
  language     = {eng},
  number       = {1-2},
  pages        = {125--133},
  publisher    = {Elsevier},
  series       = {Geoderma},
  title        = {Vesicular-arbuscular mycorrizae for dating multiple paleosols and carbon loss rate determination},
  url          = {http://dx.doi.org/10.1016/S0016-7061(00)00030-6},
  volume       = {97},
  year         = {2000},
}