Evans, Christopher
- Centre for Ecology and Hydrology (CEH)
Abstract
Ecological and biogeochemical processes in lakes are strongly dependent upon water temperature. Long-term surface warming of many lakes is unequivocal, but little is known about the comparative magnitude of temperature variation at diel timescales, due to a lack of appropriately resolved data. Here we quantify the pattern and magnitude of diel temperature variability of surface waters using high-frequency data from 100 lakes. We show that the near-surface diel temperature range can be substantial in summer relative to long-term change and, for lakes smaller than 3 km(2), increases sharply and predictably with decreasing lake area. Most small lakes included in this study experience average summer diel ranges in their near-surface temperatures of between 4 and 7 degrees C. Large diel temperature fluctuations in the majority of lakes undoubtedly influence their structure, function and role in biogeochemical cycles, but the full implications remain largely unexplored.
Published in
PLoS ONE
2016, volume: 11, number: 3, article number: e0152466
Publisher: PUBLIC LIBRARY SCIENCE
SLU Authors
UKÄ Subject classification
Geosciences, Multidisciplinary
Publication identifier
- DOI: https://doi.org/10.1371/journal.pone.0152466
Permanent link to this page (URI)
https://res.slu.se/id/publ/88891