4.5 Letter

Widespread synchrony in phosphorus concentrations in northern lakes linked to winter temperature and summer precipitation

Journal

LIMNOLOGY AND OCEANOGRAPHY LETTERS
Volume 8, Issue 4, Pages 639-648

Publisher

WILEY
DOI: 10.1002/lol2.10318

Keywords

-

Ask authors/readers for more resources

In recent years, unexplained declines in lake TP concentrations have been observed in northern latitudes (> 42 degrees N latitude). Data from 389 lakes in Fennoscandia and eastern North America were analyzed to investigate the effects of climate on lake TP concentrations. Synchrony in year-to-year variability was found within and among different geographic regions, indicating climatic influences. Winter temperature was identified as the most important factor controlling annual TP, followed by summer precipitation.
In recent years, unexplained declines in lake total phosphorus (TP) concentrations have been observed at northern latitudes (> 42 degrees N latitude) where most of the world's lakes are found. We compiled data from 389 lakes in Fennoscandia and eastern North America to investigate the effects of climate on lake TP concentrations. Synchrony in year-to-year variability is an indicator of climatic influences on lake TP, because other major influences on nutrients (e.g., land use change) are not likely to affect all lakes in the same year. We identified significant synchrony in lake TP both within and among different geographic regions. Using a bootstrapped random forest analysis, we identified winter temperature as the most important factor controlling annual TP, followed by summer precipitation. In Fennoscandia, TP was negatively correlated with the winter East Atlantic Pattern, which is associated with regionally warmer winters. Our results suggest that, in the absence of other overriding factors, lake TP and productivity may decline with continued winter warming in northern lakes.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available