TY - JOUR
T1 - Biogenic volatile organic compounds in arctic soil
T2 - A field study of concentrations and variability with vegetation cover
AU - Wester-Larsen, Lærke
AU - Kramshøj, Magnus
AU - Albers, Christian N.
AU - Rinnan, Riikka
N1 - Funding Information:
The study was financially supported by the Danish Council for Independent Research|Natural Sciences (DFF‐4002‐00495 and DFF‐4181‐00141), the Carlsberg Foundation, the European Research Council (ERC) under the European Union's Horizon 2020 Research and Innovation Programme (Grant Agreement 771012), and the Danish National Research Foundation (CENPERM DNRF100). Data from the Greenland Ecosystem Monitoring Programme were provided by Asiaq—Greenland Survey, Nuuk, Greenland. We thank Arctic Station for the facilities and logistical support in field work, Marie Flyger for assisting field work, and Ida Vedel‐Petersen, Gosha Sylvester, and Michelle Schollert for running the GC‐MS analyses.
Publisher Copyright:
©2020. American Geophysical Union. All Rights Reserved.
PY - 2020/7/1
Y1 - 2020/7/1
N2 - Soil biogenic volatile organic compounds (sBVOCs) contribute to ecosystem emissions and play an important role in the soil ecosystem. Most previous studies on sBVOCs have looked at emissions from excavated soil in the laboratory or in situ emissions from areas with bare soil, using chambers. So far, however, the actual BVOC concentrations in the soil have rarely been considered. Herein, we sought to explore the relationships between the vegetation cover in a low Arctic heath ecosystem in Western Greenland and the BVOC concentration in the soil below. In situ measurements were performed at 15-cm depth in areas dominated by Cassiope tetragona, Empetrum nigrum, Salix glauca, and Betula nana and along a 36-m-long transect with mixed vegetation cover during the growing seasons of 2015–2017. sBVOC concentrations varied between the different vegetation covers, with higher concentrations below Cassiope and Betula compared to Empetrum. Furthermore, sBVOC concentrations differed along the transect, and this variation was also partly related to differences in the vegetation cover. Moreover, we demonstrate that installation of a soil probe, for sampling soil air, changes the composition and magnitude of sBVOCs up to 1 day after the installation.
AB - Soil biogenic volatile organic compounds (sBVOCs) contribute to ecosystem emissions and play an important role in the soil ecosystem. Most previous studies on sBVOCs have looked at emissions from excavated soil in the laboratory or in situ emissions from areas with bare soil, using chambers. So far, however, the actual BVOC concentrations in the soil have rarely been considered. Herein, we sought to explore the relationships between the vegetation cover in a low Arctic heath ecosystem in Western Greenland and the BVOC concentration in the soil below. In situ measurements were performed at 15-cm depth in areas dominated by Cassiope tetragona, Empetrum nigrum, Salix glauca, and Betula nana and along a 36-m-long transect with mixed vegetation cover during the growing seasons of 2015–2017. sBVOC concentrations varied between the different vegetation covers, with higher concentrations below Cassiope and Betula compared to Empetrum. Furthermore, sBVOC concentrations differed along the transect, and this variation was also partly related to differences in the vegetation cover. Moreover, we demonstrate that installation of a soil probe, for sampling soil air, changes the composition and magnitude of sBVOCs up to 1 day after the installation.
KW - Arctic
KW - disturbance
KW - soil
KW - spatial and temporal variation
KW - vegetation
KW - volatile organic compounds
UR - http://www.scopus.com/inward/record.url?scp=85088556521&partnerID=8YFLogxK
U2 - 10.1029/2019JG005551
DO - 10.1029/2019JG005551
M3 - Article
AN - SCOPUS:85088556521
VL - 125
JO - Journal of Geophysical Research: Biogeosciences
JF - Journal of Geophysical Research: Biogeosciences
SN - 2169-8953
IS - 7
M1 - e2019JG005551
ER -