A comprehensive porewater survey of European peatlands reveals sustained elevated phosphorus levels after 10–20 years of rewetting

Nimisha Krishnankutty; Jörg Gelbrecht; Rasmus Jes Petersen; Dylan Rayner; Maximilian P. Lau; Stefan Frank; Roxane Andersen; Jaan Pärn; Ülo Mander; Wiktor Kotowski; Haojie Liu; Bo V. Iversen; Goswin Heckrath; Hans C.B. Hansen; Carl C. Hoffmann; Maarit I. Mäenpää; Tobias Goldhammer; Ain Kull; Adrian-Florin Florea; Dominik Zak

doi:10.1016/j.geoderma.2025.117554

A comprehensive porewater survey of European peatlands reveals sustained elevated phosphorus levels after 10–20 years of rewetting

Nimisha Krishnankutty
, Jörg Gelbrecht
, Rasmus Jes Petersen
, Dylan Rayner
, Maximilian P. Lau
, Stefan Frank
, Roxane Andersen
, Jaan Pärn
, Ülo Mander
, Wiktor Kotowski
, Haojie Liu
, Bo V. Iversen
, Goswin Heckrath
, Hans C.B. Hansen
, Carl C. Hoffmann
, Maarit I. Mäenpää
, Tobias Goldhammer
, Ain Kull
, Adrian-Florin Florea
, Dominik Zak

Environmental Research Institute

Publikation: Article › Begutachtung

1 Zitat (Scopus)

Abstract

Rewetting drained peatlands can lead to high nutrient mobilization, increased methane emissions, and a slow re-establishment of peat-forming vegetation. To guide effective restoration and management, understanding the temporal and spatial variability in porewater chemistry is essential. This study surveyed 64 natural and rewetted peatlands across Germany, Poland, Estonia, Sweden, Georgia, and Scotland from 1997 to 2017. A total of 812 anoxic porewater samples were collected using dialysis samplers (0–0.6 m depth). The rewetted fens exhibited a wide range of dissolved substances, spanning orders of magnitude for soluble reactive phosphorus (SRP: 0.1–18.9 mg L−1), ammonium (NH4+-N: 0.1–117.3 mg L−1), and dissolved organic carbon (DOC: 13–313 mg L−1). However, the mean concentrations were significantly higher than those observed in natural fens (p

Originalsprache	English
Aufsatznummer	117554
Fachzeitschrift	Geoderma
Jahrgang	463
DOIs	https://doi.org/10.1016/j.geoderma.2025.117554
Publikationsstatus	Published - 17 Okt. 2025

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10.1016/j.geoderma.2025.117554Lizenz: CC BY

https://www.sciencedirect.com/science/article/pii/S0016706125003957

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Krishnankutty, N., Gelbrecht, J., Petersen, R. J., Rayner, D., Lau, M. P., Frank, S., Andersen, R., Pärn, J., Mander, Ü., Kotowski, W., Liu, H., Iversen, B. V., Heckrath, G., Hansen, H. C. B., Hoffmann, C. C., Mäenpää, M. I., Goldhammer, T., Kull, A., Florea, A.-F., & Zak, D. (2025). A comprehensive porewater survey of European peatlands reveals sustained elevated phosphorus levels after 10–20 years of rewetting. Geoderma, 463, Artikel 117554. https://doi.org/10.1016/j.geoderma.2025.117554

@article{6cd1c5e72bd349c6a1b5d247d58697ea,

title = "A comprehensive porewater survey of European peatlands reveals sustained elevated phosphorus levels after 10–20 years of rewetting",

abstract = "Rewetting drained peatlands can lead to high nutrient mobilization, increased methane emissions, and a slow re-establishment of peat-forming vegetation. To guide effective restoration and management, understanding the temporal and spatial variability in porewater chemistry is essential. This study surveyed 64 natural and rewetted peatlands across Germany, Poland, Estonia, Sweden, Georgia, and Scotland from 1997 to 2017. A total of 812 anoxic porewater samples were collected using dialysis samplers (0–0.6 m depth). The rewetted fens exhibited a wide range of dissolved substances, spanning orders of magnitude for soluble reactive phosphorus (SRP: 0.1–18.9 mg L−1), ammonium (NH4+-N: 0.1–117.3 mg L−1), and dissolved organic carbon (DOC: 13–313 mg L−1). However, the mean concentrations were significantly higher than those observed in natural fens (p ",

keywords = "Iron(III) oxyhydroxides, Peat decomposition, Phosphorus mobilization, Redox processes, Water quality",

author = "Nimisha Krishnankutty and J{\"o}rg Gelbrecht and Petersen, \{Rasmus Jes\} and Dylan Rayner and Lau, \{Maximilian P.\} and Stefan Frank and Roxane Andersen and Jaan P{\"a}rn and {\"U}lo Mander and Wiktor Kotowski and Haojie Liu and Iversen, \{Bo V.\} and Goswin Heckrath and Hansen, \{Hans C.B.\} and Hoffmann, \{Carl C.\} and M{\"a}enp{\"a}{\"a}, \{Maarit I.\} and Tobias Goldhammer and Ain Kull and Adrian-Florin Florea and Dominik Zak",

year = "2025",

month = oct,

day = "17",

doi = "10.1016/j.geoderma.2025.117554",

language = "English",

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journal = "Geoderma",

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Krishnankutty, N, Gelbrecht, J, Petersen, RJ, Rayner, D, Lau, MP, Frank, S, Andersen, R, Pärn, J, Mander, Ü, Kotowski, W, Liu, H, Iversen, BV, Heckrath, G, Hansen, HCB, Hoffmann, CC, Mäenpää, MI, Goldhammer, T, Kull, A, Florea, A-F & Zak, D 2025, 'A comprehensive porewater survey of European peatlands reveals sustained elevated phosphorus levels after 10–20 years of rewetting', Geoderma, Jg. 463, 117554. https://doi.org/10.1016/j.geoderma.2025.117554

TY - JOUR

T1 - A comprehensive porewater survey of European peatlands reveals sustained elevated phosphorus levels after 10–20 years of rewetting

AU - Krishnankutty, Nimisha

AU - Gelbrecht, Jörg

AU - Petersen, Rasmus Jes

AU - Rayner, Dylan

AU - Lau, Maximilian P.

AU - Frank, Stefan

AU - Andersen, Roxane

AU - Pärn, Jaan

AU - Mander, Ülo

AU - Kotowski, Wiktor

AU - Liu, Haojie

AU - Iversen, Bo V.

AU - Heckrath, Goswin

AU - Hansen, Hans C.B.

AU - Hoffmann, Carl C.

AU - Mäenpää, Maarit I.

AU - Goldhammer, Tobias

AU - Kull, Ain

AU - Florea, Adrian-Florin

AU - Zak, Dominik

PY - 2025/10/17

Y1 - 2025/10/17

N2 - Rewetting drained peatlands can lead to high nutrient mobilization, increased methane emissions, and a slow re-establishment of peat-forming vegetation. To guide effective restoration and management, understanding the temporal and spatial variability in porewater chemistry is essential. This study surveyed 64 natural and rewetted peatlands across Germany, Poland, Estonia, Sweden, Georgia, and Scotland from 1997 to 2017. A total of 812 anoxic porewater samples were collected using dialysis samplers (0–0.6 m depth). The rewetted fens exhibited a wide range of dissolved substances, spanning orders of magnitude for soluble reactive phosphorus (SRP: 0.1–18.9 mg L−1), ammonium (NH4+-N: 0.1–117.3 mg L−1), and dissolved organic carbon (DOC: 13–313 mg L−1). However, the mean concentrations were significantly higher than those observed in natural fens (p

AB - Rewetting drained peatlands can lead to high nutrient mobilization, increased methane emissions, and a slow re-establishment of peat-forming vegetation. To guide effective restoration and management, understanding the temporal and spatial variability in porewater chemistry is essential. This study surveyed 64 natural and rewetted peatlands across Germany, Poland, Estonia, Sweden, Georgia, and Scotland from 1997 to 2017. A total of 812 anoxic porewater samples were collected using dialysis samplers (0–0.6 m depth). The rewetted fens exhibited a wide range of dissolved substances, spanning orders of magnitude for soluble reactive phosphorus (SRP: 0.1–18.9 mg L−1), ammonium (NH4+-N: 0.1–117.3 mg L−1), and dissolved organic carbon (DOC: 13–313 mg L−1). However, the mean concentrations were significantly higher than those observed in natural fens (p

KW - Iron(III) oxyhydroxides

KW - Peat decomposition

KW - Phosphorus mobilization

KW - Redox processes

KW - Water quality

U2 - 10.1016/j.geoderma.2025.117554

DO - 10.1016/j.geoderma.2025.117554

M3 - Article

SN - 0016-7061

VL - 463

JO - Geoderma

JF - Geoderma

M1 - 117554

ER -

A comprehensive porewater survey of European peatlands reveals sustained elevated phosphorus levels after 10–20 years of rewetting

Abstract

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