Browning of boreal freshwaters coupled to carbon-iron interactions along the aquatic continuum

The color of freshwaters, often measured as absorbance, influences a number of ecosystem services including biodiversity, fish production, and drinking water quality. Many countries have recently reported on increasing trends of water color in freshwaters, for which drivers are still not fully under...

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Bibliographic Details
Published in:PloS one 2014-02, Vol.9 (2), p.e88104
Main Authors: Weyhenmeyer, Gesa A, Prairie, Yves T, Tranvik, Lars J
Format: Article
Language:English
Subjects:
Absorbance
Aquatic sciences
Biodiversity
Biogeochemical cycles
Biology
Browning
Carbon - analysis
Chemistry
Color
Creeks & streams
Dissolved organic carbon
Dissolved organic matter
Drinking water
Earth Sciences
Ecosystem assessment
Ecosystem services
Ecosystems
Environmental Monitoring
Fresh water
Fresh Water - analysis
Geochemistry
Iron
Iron - analysis
Laboratories
Lakes
Limnology
Materials Science
Oceanography
Organic carbon
Precipitation
Respiration
Rivers
Running waters
Runoff
Trends
Water analysis
Water color
Water purification
Water quality
Water sampling
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Summary:The color of freshwaters, often measured as absorbance, influences a number of ecosystem services including biodiversity, fish production, and drinking water quality. Many countries have recently reported on increasing trends of water color in freshwaters, for which drivers are still not fully understood. We show here with more than 58000 water samples from the boreal and hemiboreal region of Sweden and Canada that absorbance of filtered water (a₄₂₀) co-varied with dissolved organic carbon (DOC) concentrations (R²  = 0.85, P
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0088104