Long-term nitrogen and phosphorus dynamics in waters discharging from forestry-drained and undrained boreal peatlands

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http://hdl.handle.net/10138/335011

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Nieminen, M., Sarkkola, S., Hasselquist, E.M. et al. Long-Term Nitrogen and Phosphorus Dynamics in Waters Discharging from Forestry-Drained and Undrained Boreal Peatlands. Water Air Soil Pollut 232, 371 (2021). https://doi.org/10.1007/s11270-021-05293-y

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Title: Long-term nitrogen and phosphorus dynamics in waters discharging from forestry-drained and undrained boreal peatlands
Author: Nieminen, Mika; Sarkkola, Sakari; Hasselquist, Eliza Maher; Sallantaus, Tapani
Publisher: Kluwer Academic Publishers
Date: 2021
Language: en
Belongs to series: Water, Air, & Soil Pollution 232 (2021), 371
ISSN: 0049-6979
DOI: https://doi.org/10.1007/s11270-021-05293-y
URI: http://hdl.handle.net/10138/335011
Abstract: Contradictory results for the long-term evolution of nitrogen and phosphorus concentrations in waters discharging from drained peatland forests need reconciliation. We gathered long-term (10–29 years) water quality data from 29 forested catchments, 18 forestry-drained and 11 undrained peatlands. Trend analysis of the nitrogen and phosphorus concentration data indicated variable trends from clearly decreasing to considerably increasing temporal trends. While the variations in phosphorus concentration trends over time did not correlate with any of our explanatory factors, trends in nitrogen concentrations correlated positively with tree stand volume in the catchments and temperature sum. A positive correlation of increasing nitrogen concentrations with temperature sum raises concerns of the future evolution of nitrogen dynamics under a warming climate. Furthermore, the correlation with tree stand volume is troublesome due to the generally accepted policy to tackle the climate crisis by enhancing tree growth. However, future research is still needed to assess which are the actual processes related to stand volume and temperature sum that contribute to increasing TN concentrations.
Subject: drainage
forestry
peatlands
temporal trends
water quality
nutrients (plants)
concentration (chemical properties)
trends
catchment areas
leaching
water protection
phosphorus
nitrogen
trenching
Finland
Sweden
Subject (ysa): vedenlaatu
ravinteet
metsätalous
suot
pitoisuus
trendit
turvemaat
valuma-alueet
huuhtoutuminen
vesiensuojelu
fosfori
typpi
ojitus
kuivaus
Suomi
Ruotsi
Rights: Open Access: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.


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