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Title: A Small Temperate Lake in the 21st Century: Dynamics of Water Temperature, Ice Phenology, Dissolved Oxygen, and Chlorophyll a

Abstract

It is unclear how small temperate lakes will evolve physically and biologically in the whole water column under future climate because previous modeling studies usually focused on only one or two physical or biological state variables in the surface waters. To fill this gap, we used a well-validated lake biogeochemistry model driven with different climate scenarios to predict the dynamics of ice phenology, water temperature, dissolved oxygen (DO) and chlorophyll in a small Canadian temperate lake during the 21st century, considering the influence of catchment hydrology. We find that the ice season and ice thickness of the lake would shrink substantially, resulting in a positive energy feedback between climate and the lake. Due to the reduced heat diffusion and water mixing, the dynamics of water temperature in surface waters and deep waters are considerably different, with surface waters warmed dramatically but deep waters muted to warming. The lake DO concentrations would be depleted by warming in the whole column but the controlling processes are depth dependent. The chlorophyll concentration in the lake is inertia to climate change, mainly due to the mismatch of the timings of peak solar radiation and thermal and nutrient optima. Our analysis indicates that the influencemore » of catchment hydrology is large on the dynamics of DO, but not on other state variables we have examined. Finally, this study suggests that small temperate lakes could be sensitive to climate change but their physical and biological responses could be diverse.« less

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Dorset Environmental Science Centre, Ontario Ministry of Environment and Climate Change, Dorset, ON (Canada)
  2. Purdue Univ., West Lafayette, IN (United States)
  3. Dorset Environmental Science Centre, Ontario Ministry of Environment and Climate Change, Dorset, ON (Canada); Purdue Univ., West Lafayette, IN (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1490323
Report Number(s):
PNNL-SA-133195
Journal ID: ISSN 0043-1397
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Accepted Manuscript
Journal Name:
Water Resources Research
Additional Journal Information:
Journal Volume: 54; Journal Issue: 7; Journal ID: ISSN 0043-1397
Publisher:
American Geophysical Union (AGU)
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; 58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES; Dynamics of water temperature; ice phenology; dissolved oxygen and chlorophyll; biogeochemistry model; catchment hydrology

Citation Formats

Tan, Zeli, Yao, Huaxia, and Zhuang, Qianlai. A Small Temperate Lake in the 21st Century: Dynamics of Water Temperature, Ice Phenology, Dissolved Oxygen, and Chlorophyll a. United States: N. p., 2018. Web. doi:10.1029/2017WR022334.
Tan, Zeli, Yao, Huaxia, & Zhuang, Qianlai. A Small Temperate Lake in the 21st Century: Dynamics of Water Temperature, Ice Phenology, Dissolved Oxygen, and Chlorophyll a. United States. doi:10.1029/2017WR022334.
Tan, Zeli, Yao, Huaxia, and Zhuang, Qianlai. Tue . "A Small Temperate Lake in the 21st Century: Dynamics of Water Temperature, Ice Phenology, Dissolved Oxygen, and Chlorophyll a". United States. doi:10.1029/2017WR022334.
@article{osti_1490323,
title = {A Small Temperate Lake in the 21st Century: Dynamics of Water Temperature, Ice Phenology, Dissolved Oxygen, and Chlorophyll a},
author = {Tan, Zeli and Yao, Huaxia and Zhuang, Qianlai},
abstractNote = {It is unclear how small temperate lakes will evolve physically and biologically in the whole water column under future climate because previous modeling studies usually focused on only one or two physical or biological state variables in the surface waters. To fill this gap, we used a well-validated lake biogeochemistry model driven with different climate scenarios to predict the dynamics of ice phenology, water temperature, dissolved oxygen (DO) and chlorophyll in a small Canadian temperate lake during the 21st century, considering the influence of catchment hydrology. We find that the ice season and ice thickness of the lake would shrink substantially, resulting in a positive energy feedback between climate and the lake. Due to the reduced heat diffusion and water mixing, the dynamics of water temperature in surface waters and deep waters are considerably different, with surface waters warmed dramatically but deep waters muted to warming. The lake DO concentrations would be depleted by warming in the whole column but the controlling processes are depth dependent. The chlorophyll concentration in the lake is inertia to climate change, mainly due to the mismatch of the timings of peak solar radiation and thermal and nutrient optima. Our analysis indicates that the influence of catchment hydrology is large on the dynamics of DO, but not on other state variables we have examined. Finally, this study suggests that small temperate lakes could be sensitive to climate change but their physical and biological responses could be diverse.},
doi = {10.1029/2017WR022334},
journal = {Water Resources Research},
number = 7,
volume = 54,
place = {United States},
year = {2018},
month = {6}
}

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Works referenced in this record:

Integrating aquatic and terrestrial components to construct a complete carbon budget for a north temperate lake district
journal, October 2010