Including hydrological self-regulating processes in peatland models: Effects on peatmoss drought projections.

J.J. Nijp, K. Metselaar, J. Limpens, Claudia Teutschbein, M. Peichl, Mats Nilsson , F. Berendse, S.E.A.T.M. van der Zee

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

The water content of the topsoil is one of the key factors controlling biogeochemical processes, greenhouse gas emissions and biosphere – atmosphere interactions in many ecosystems, particularly in northern peatlands. In thesewetland ecosystems, thewater content of the photosynthetic active peatmoss layer is crucial for ecosystem functioning and carbon sequestration, and is sensitive to future shifts in rainfall and drought characteristics. Current
peatland models differ in the degree in which hydrological feedbacks are included, but how this affects peatmoss drought projections is unknown.
The aimof this paperwas to systematically testwhether the level of hydrological detail inmodels could bias projections ofwater content and drought stress for peatmoss in northern peatlands using downscaled projections for
rainfall and potential evapotranspiration in the current (1991–2020) and future climate (2061–2090). We considered fourmodel variants that either include or exclude moss (rain)water storage and peat volume change, as these are two central processes in the hydrological self-regulation of peatmoss carpets.Model performance was validated using field data of a peatland in northern Sweden.
Includingmosswater storage aswell as peat volume change resulted in a significant improvement ofmodel performance, despite the extra parameters added. The best performance was achieved if both processes were.
Original languageEnglish
Pages (from-to)1389-1400
JournalScience of the Total Environment
Volume580
DOIs
Publication statusPublished - 2017

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Drought
peatland
Ecosystems
Peat
drought
volume change
Rain
ecosystem
peat
atmosphere-biosphere interaction
Evapotranspiration
active layer
potential evapotranspiration
drought stress
water storage
Gas emissions
Greenhouse gases
moss
carbon sequestration
Water content

Cite this

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title = "Including hydrological self-regulating processes in peatland models: Effects on peatmoss drought projections.",
abstract = "The water content of the topsoil is one of the key factors controlling biogeochemical processes, greenhouse gas emissions and biosphere – atmosphere interactions in many ecosystems, particularly in northern peatlands. In thesewetland ecosystems, thewater content of the photosynthetic active peatmoss layer is crucial for ecosystem functioning and carbon sequestration, and is sensitive to future shifts in rainfall and drought characteristics. Currentpeatland models differ in the degree in which hydrological feedbacks are included, but how this affects peatmoss drought projections is unknown.The aimof this paperwas to systematically testwhether the level of hydrological detail inmodels could bias projections ofwater content and drought stress for peatmoss in northern peatlands using downscaled projections forrainfall and potential evapotranspiration in the current (1991–2020) and future climate (2061–2090). We considered fourmodel variants that either include or exclude moss (rain)water storage and peat volume change, as these are two central processes in the hydrological self-regulation of peatmoss carpets.Model performance was validated using field data of a peatland in northern Sweden.Includingmosswater storage aswell as peat volume change resulted in a significant improvement ofmodel performance, despite the extra parameters added. The best performance was achieved if both processes were.",
author = "J.J. Nijp and K. Metselaar and J. Limpens and Claudia Teutschbein and M. Peichl and Mats Nilsson and F. Berendse and {van der Zee}, S.E.A.T.M.",
year = "2017",
doi = "10.1016/j.scitotenv.2016.12.104",
language = "English",
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Including hydrological self-regulating processes in peatland models: Effects on peatmoss drought projections. / Nijp, J.J.; Metselaar, K.; Limpens, J.; Teutschbein, Claudia; Peichl, M.; Nilsson , Mats ; Berendse, F.; van der Zee, S.E.A.T.M.

In: Science of the Total Environment, Vol. 580, 2017, p. 1389-1400.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Including hydrological self-regulating processes in peatland models: Effects on peatmoss drought projections.

AU - Nijp, J.J.

AU - Metselaar, K.

AU - Limpens, J.

AU - Teutschbein, Claudia

AU - Peichl, M.

AU - Nilsson , Mats

AU - Berendse, F.

AU - van der Zee, S.E.A.T.M.

PY - 2017

Y1 - 2017

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AB - The water content of the topsoil is one of the key factors controlling biogeochemical processes, greenhouse gas emissions and biosphere – atmosphere interactions in many ecosystems, particularly in northern peatlands. In thesewetland ecosystems, thewater content of the photosynthetic active peatmoss layer is crucial for ecosystem functioning and carbon sequestration, and is sensitive to future shifts in rainfall and drought characteristics. Currentpeatland models differ in the degree in which hydrological feedbacks are included, but how this affects peatmoss drought projections is unknown.The aimof this paperwas to systematically testwhether the level of hydrological detail inmodels could bias projections ofwater content and drought stress for peatmoss in northern peatlands using downscaled projections forrainfall and potential evapotranspiration in the current (1991–2020) and future climate (2061–2090). We considered fourmodel variants that either include or exclude moss (rain)water storage and peat volume change, as these are two central processes in the hydrological self-regulation of peatmoss carpets.Model performance was validated using field data of a peatland in northern Sweden.Includingmosswater storage aswell as peat volume change resulted in a significant improvement ofmodel performance, despite the extra parameters added. The best performance was achieved if both processes were.

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