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Is the subarctic landscape still a carbon sink? Evidence from a detailed catchment balance

Lundin, Erik J. ; Klaminder, Jonatan ; Giesler, Reiner ; Persson, Andreas LU ; Olefeldt, David ; Heliasz, Michal LU ; Christensen, Torben R. LU and Karlsson, Jan (2016) In Geophysical Research Letters 43(5). p.1988-1995
Abstract

Climate warming raises the question whether high-latitude landscape still function as net carbon (C) sinks. By compiling an integrated C balance for an intensely studied subarctic catchment, we show that this catchment's C balance is not likely to be a strong current sink of C, a commonly held assumption. In fact, it is more plausible (71% probability) that the studied catchment functions as a C source (-11 ± 20 g C m-2 yr-1). Analyses of individual fluxes indicate that soil and aquatic C losses offset C sequestering in other landscape components (e.g., peatlands and aboveground forest biomass). Our results stress the importance of fully integrated catchment C balance estimates and highlight the importance of... (More)

Climate warming raises the question whether high-latitude landscape still function as net carbon (C) sinks. By compiling an integrated C balance for an intensely studied subarctic catchment, we show that this catchment's C balance is not likely to be a strong current sink of C, a commonly held assumption. In fact, it is more plausible (71% probability) that the studied catchment functions as a C source (-11 ± 20 g C m-2 yr-1). Analyses of individual fluxes indicate that soil and aquatic C losses offset C sequestering in other landscape components (e.g., peatlands and aboveground forest biomass). Our results stress the importance of fully integrated catchment C balance estimates and highlight the importance of upland soils and their interaction with the aquatic network for the catchment C balance.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
aquatic ecosystems, carbon balance, sink, source, subarctic, terrestrial ecosystems
in
Geophysical Research Letters
volume
43
issue
5
pages
8 pages
publisher
American Geophysical Union (AGU)
external identifiers
  • wos:000373109800025
  • scopus:84959574152
ISSN
0094-8276
DOI
10.1002/2015GL066970
language
English
LU publication?
yes
id
f9be953a-f5ac-4e1a-a0a9-430e280d14cf
date added to LUP
2016-09-19 10:29:35
date last changed
2025-01-12 11:30:24
@article{f9be953a-f5ac-4e1a-a0a9-430e280d14cf,
  abstract     = {{<p>Climate warming raises the question whether high-latitude landscape still function as net carbon (C) sinks. By compiling an integrated C balance for an intensely studied subarctic catchment, we show that this catchment's C balance is not likely to be a strong current sink of C, a commonly held assumption. In fact, it is more plausible (71% probability) that the studied catchment functions as a C source (-11 ± 20 g C m<sup>-2</sup> yr<sup>-1</sup>). Analyses of individual fluxes indicate that soil and aquatic C losses offset C sequestering in other landscape components (e.g., peatlands and aboveground forest biomass). Our results stress the importance of fully integrated catchment C balance estimates and highlight the importance of upland soils and their interaction with the aquatic network for the catchment C balance.</p>}},
  author       = {{Lundin, Erik J. and Klaminder, Jonatan and Giesler, Reiner and Persson, Andreas and Olefeldt, David and Heliasz, Michal and Christensen, Torben R. and Karlsson, Jan}},
  issn         = {{0094-8276}},
  keywords     = {{aquatic ecosystems; carbon balance; sink; source; subarctic; terrestrial ecosystems}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{5}},
  pages        = {{1988--1995}},
  publisher    = {{American Geophysical Union (AGU)}},
  series       = {{Geophysical Research Letters}},
  title        = {{Is the subarctic landscape still a carbon sink? Evidence from a detailed catchment balance}},
  url          = {{http://dx.doi.org/10.1002/2015GL066970}},
  doi          = {{10.1002/2015GL066970}},
  volume       = {{43}},
  year         = {{2016}},
}