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Diverse drivers of long-term pCO(2)increases across thirteen boreal lakes and streams

Nydahl, Anna C. and Wallin, Marcus and Weyhenmeyer, Gesa A. (2020). Diverse drivers of long-term pCO(2)increases across thirteen boreal lakes and streams. Inland Waters. 10 , 360-372
[Journal article]

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Abstract

Understanding the mechanisms driving carbon dioxide (CO2) concentrations in inland waters is important to foresee CO(2)responses to environmental change, yet knowledge gaps persist regarding which processes are the key drivers. Here we investigated possible drivers across 13 Swedish lakes and streams where the partial pressure of CO2(pCO(2)) has increased over a 21-year period. Overall, we could not identify a single dominating mechanism responsible for the observedpCO(2)increase. In the 8 lakes, we found thatpCO(2)increased, driven either by a possible dissolved organic carbon (DOC) stimulation of microbial mineralization or by water color primary production suppression. In streams, the dominating mechanism for apCO(2)increase was either a change in the carbonate system distribution or a possible nutrient-driven decrease in primary production. This is the first study to demonstrate and explain consistent positivepCO(2)temporal trends in freshwater ecosystems, and our results should be taken into account when predicting future emission of CO(2)from inland waters.

Authors/Creators:Nydahl, Anna C. and Wallin, Marcus and Weyhenmeyer, Gesa A.
Title:Diverse drivers of long-term pCO(2)increases across thirteen boreal lakes and streams
Year of publishing :2020
Volume:10
Page range:360-372
Number of Pages:13
ISSN:2044-2041
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Oceanography, Hydrology, Water Resources
Keywords:carbon dioxide, freshwater, inland water, mechanisms
URN:NBN:urn:nbn:se:slu:epsilon-p-106936
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-106936
Additional ID:
Type of IDID
DOI10.1080/20442041.2020.1740549
Web of Science (WoS)000543554700001
ID Code:17794
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:13 Oct 2020 10:45
Metadata Last Modified:13 Oct 2020 10:51

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