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Centennial-long trends of lake browning show major effect of afforestation

Kritzberg, Emma S LU (2017) In Limnology and Oceanography Letters 2(4). p.105-112
Abstract
Observations of increasing water color and organic carbon concentrations in lakes are widespread across the Northern Hemisphere. The drivers of these trends are debated. Declining atmospheric sulfur deposition has been put forward as an important underlying factor, since recovery from acidification enhances mobility of organic matter from surrounding soils. This would suggest that the current browning represents a return to a more natural state. This study explores historical lake data from Sweden—1935 to 2015—providing a unique opportunity to see how and why water color has varied during almost a century. The data shows that sulfur deposition has not been the primary driver of water color trends over this period. I propose that the... (More)
Observations of increasing water color and organic carbon concentrations in lakes are widespread across the Northern Hemisphere. The drivers of these trends are debated. Declining atmospheric sulfur deposition has been put forward as an important underlying factor, since recovery from acidification enhances mobility of organic matter from surrounding soils. This would suggest that the current browning represents a return to a more natural state. This study explores historical lake data from Sweden—1935 to 2015—providing a unique opportunity to see how and why water color has varied during almost a century. The data shows that sulfur deposition has not been the primary driver of water color trends over this period. I propose that the observed browning is to a large extent driven by a major transition from agriculture to forestry. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Limnology and Oceanography Letters
volume
2
issue
4
pages
105 - 112
publisher
Wiley Online Library
ISSN
2378-2242
DOI
10.1002/lol2.10041
language
English
LU publication?
yes
id
2561323f-9d64-4a7d-8c93-2ecd5e607d65
date added to LUP
2019-07-04 09:17:43
date last changed
2019-07-04 16:17:42
@article{2561323f-9d64-4a7d-8c93-2ecd5e607d65,
  abstract     = {Observations of increasing water color and organic carbon concentrations in lakes are widespread across the Northern Hemisphere. The drivers of these trends are debated. Declining atmospheric sulfur deposition has been put forward as an important underlying factor, since recovery from acidification enhances mobility of organic matter from surrounding soils. This would suggest that the current browning represents a return to a more natural state. This study explores historical lake data from Sweden—1935 to 2015—providing a unique opportunity to see how and why water color has varied during almost a century. The data shows that sulfur deposition has not been the primary driver of water color trends over this period. I propose that the observed browning is to a large extent driven by a major transition from agriculture to forestry.},
  author       = {Kritzberg, Emma S},
  issn         = {2378-2242},
  language     = {eng},
  number       = {4},
  pages        = {105--112},
  publisher    = {Wiley Online Library},
  series       = {Limnology and Oceanography Letters},
  title        = {Centennial-long trends of lake browning show major effect of afforestation},
  url          = {http://dx.doi.org/10.1002/lol2.10041},
  volume       = {2},
  year         = {2017},
}