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Carbon, Nutrients and Methylmercury in Water from Small Catchments Affected by Various Forest Management Operations

Klavina, Zane and Bārdule, Arta and Eklöf, Karin and Bitenieks, Kriss and Klavins, Ivars and Lībiete, Zane (2021). Carbon, Nutrients and Methylmercury in Water from Small Catchments Affected by Various Forest Management Operations. Forests. 12 , 1278
[Research article]

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Abstract

Forest management activities in boreal and hemiboreal environments have been found to increase the concentration of carbon, nutrients, and methylmercury (MeHg) in runoff water, thus contributing to environmental quality issues. We evaluated carbon, nutrient, and MeHg concentrations in water at eight small, forested catchments on organic soils in Latvia, subject to ditch cleaning and beaver dam removal. These management-induced disturbances were classified into a major, minor, or no disturbance classes. The concentrations of dissolved organic carbon and total nitrogen were elevated in disturbed catchments (both major and minor) compared to the catchments with no disturbance. The concentrations of MeHg in the water displayed a clear seasonal variation with higher concentrations in spring and summer, but there were no significant differences in MeHg concentrations between catchments with major, minor, and no disturbances. However, the higher concentrations of SO42- in the disturbed catchments compared to those undisturbed may promote MeHg formation if the conditions become more reduced further downstream. While most former studies of forest management effects on water quality have focused on forest harvest, our research contributes to the currently rather scarce pool of data on the impact of less-studied management operations, such as ditch cleaning and beaver dam removal, on carbon, nutrient, and MeHg concentrations in runoff water.

Authors/Creators:Klavina, Zane and Bārdule, Arta and Eklöf, Karin and Bitenieks, Kriss and Klavins, Ivars and Lībiete, Zane
Title:Carbon, Nutrients and Methylmercury in Water from Small Catchments Affected by Various Forest Management Operations
Series Name/Journal:Forests
Year of publishing :2021
Volume:12
Article number:1278
Number of Pages:18
Publisher:MDPI
ISSN:1999-4907
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:carbon, nutrients, methylmercury, drainage ditches, forest land, organic soils
URN:NBN:urn:nbn:se:slu:epsilon-p-113858
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113858
Additional ID:
Type of IDID
DOI10.3390/f12091278
Web of Science (WoS)000699743800001
ID Code:25572
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:07 Oct 2021 12:25
Metadata Last Modified:07 Oct 2021 12:31

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