How autochthonous dissolved organic matter responds to eutrophication and climate warming: Evidence from a cross-continental data analysis and experiments

Yongqiang  Zhou; Thomas Alexander Davidson; Xiaolong Yao; Yunlin Zhang; Erik Jeppesen; Javier  Garcia de Souza; Huawu Wu; Kun Shi; Boqiang Qin

doi:10.1016/j.earscirev.2018.08.013

How autochthonous dissolved organic matter responds to eutrophication and climate warming: Evidence from a cross-continental data analysis and experiments

Yongqiang Zhou, Thomas Alexander Davidson, Xiaolong Yao, Yunlin Zhang, Erik Jeppesen, Javier Garcia de Souza, Huawu Wu, Kun Shi, Boqiang Qin

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109 Citations (Scopus)

Abstract

Harmful algal blooms have become increasingly frequent due to the dual pressure of excessive nutrient loading and climate change in recent years. Algal-derived dissolved organic matter (DOM) is a potentially large component of the labile organic matter pool, and also climate warming may affect the DOM pool, although the results on the latter so far are equivocal. The question of how eutrophication and climate warming may drive the accumulation of autochthonous DOM is much debated. Here, we analysed published data on DOM world-wide and field data that we collected from 97 lakes and major rivers in China (> 4500 samples) as well as results from the longest running shallow-lake mesocosm climate experiment in the world at a research facility in Denmark. Our results indicated that dissolved organic carbon (DOC) concentrations decreased with increasing temperature and enrichment of δ ¹³C-DOM. A negative relationship was found between latitude and %protein-like fluorescence, which increased significantly with increasing elevation and enrichment of δ ¹³C-DOM. Specific ultraviolet absorbance at 254 nm (SUVA) decreased with increasing elevation and enrichment of δ ¹³C-DOM. Fluorescence intensity of autochthonous microbial humic-like substances increased notably with eutrophication but decreased weakly with warming. DOC, biodegradable DOC, chlorophyll-a, δ ¹³C-DOC and autochthonous substances identified using DOM fluorescence and high resolution mass spectrometry from the mesocosm experiment were notably elevated at the high nutrient levels, while the effect of temperature was insignificant. We conclude that while eutrophication promotes DOM, warming potentially suppresses the accumulation of autochthonous DOM in inland waters.

Original language	English
Journal	Earth-Science Reviews
Volume	185
Pages (from-to)	928-937
Number of pages	10
ISSN	0012-8252
DOIs	https://doi.org/10.1016/j.earscirev.2018.08.013
Publication status	Published - 2018

Keywords

Chromophoric dissolved organic matter
Climate warming
High-resolution mass spectrometry
Mesocosm
Nutrient enrichment
Parallel factor analysis (PARAFAC)
Stable isotope

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10.1016/j.earscirev.2018.08.013

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@article{3845fa1908d4450fbf380fb08e1d981b,

title = "How autochthonous dissolved organic matter responds to eutrophication and climate warming: Evidence from a cross-continental data analysis and experiments",

abstract = "Harmful algal blooms have become increasingly frequent due to the dual pressure of excessive nutrient loading and climate change in recent years. Algal-derived dissolved organic matter (DOM) is a potentially large component of the labile organic matter pool, and also climate warming may affect the DOM pool, although the results on the latter so far are equivocal. The question of how eutrophication and climate warming may drive the accumulation of autochthonous DOM is much debated. Here, we analysed published data on DOM world-wide and field data that we collected from 97 lakes and major rivers in China (> 4500 samples) as well as results from the longest running shallow-lake mesocosm climate experiment in the world at a research facility in Denmark. Our results indicated that dissolved organic carbon (DOC) concentrations decreased with increasing temperature and enrichment of δ 13C-DOM. A negative relationship was found between latitude and %protein-like fluorescence, which increased significantly with increasing elevation and enrichment of δ 13C-DOM. Specific ultraviolet absorbance at 254 nm (SUVA) decreased with increasing elevation and enrichment of δ 13C-DOM. Fluorescence intensity of autochthonous microbial humic-like substances increased notably with eutrophication but decreased weakly with warming. DOC, biodegradable DOC, chlorophyll-a, δ 13C-DOC and autochthonous substances identified using DOM fluorescence and high resolution mass spectrometry from the mesocosm experiment were notably elevated at the high nutrient levels, while the effect of temperature was insignificant. We conclude that while eutrophication promotes DOM, warming potentially suppresses the accumulation of autochthonous DOM in inland waters.",

keywords = "Chromophoric dissolved organic matter, Climate warming, High-resolution mass spectrometry, Mesocosm, Nutrient enrichment, Parallel factor analysis (PARAFAC), Stable isotope",

author = "Yongqiang Zhou and Davidson, {Thomas Alexander} and Xiaolong Yao and Yunlin Zhang and Erik Jeppesen and {Garcia de Souza}, Javier and Huawu Wu and Kun Shi and Boqiang Qin",

year = "2018",

doi = "10.1016/j.earscirev.2018.08.013",

language = "English",

volume = "185",

pages = "928--937",

journal = "Earth-Science Reviews",

issn = "0012-8252",

publisher = "Elsevier",

}

How autochthonous dissolved organic matter responds to eutrophication and climate warming: Evidence from a cross-continental data analysis and experiments. / Zhou, Yongqiang ; Davidson, Thomas Alexander; Yao, Xiaolong et al.
In: Earth-Science Reviews, Vol. 185, 2018, p. 928-937.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - How autochthonous dissolved organic matter responds to eutrophication and climate warming: Evidence from a cross-continental data analysis and experiments

AU - Zhou, Yongqiang

AU - Davidson, Thomas Alexander

AU - Yao, Xiaolong

AU - Zhang, Yunlin

AU - Jeppesen, Erik

AU - Garcia de Souza, Javier

AU - Wu, Huawu

AU - Shi, Kun

AU - Qin, Boqiang

PY - 2018

Y1 - 2018

N2 - Harmful algal blooms have become increasingly frequent due to the dual pressure of excessive nutrient loading and climate change in recent years. Algal-derived dissolved organic matter (DOM) is a potentially large component of the labile organic matter pool, and also climate warming may affect the DOM pool, although the results on the latter so far are equivocal. The question of how eutrophication and climate warming may drive the accumulation of autochthonous DOM is much debated. Here, we analysed published data on DOM world-wide and field data that we collected from 97 lakes and major rivers in China (> 4500 samples) as well as results from the longest running shallow-lake mesocosm climate experiment in the world at a research facility in Denmark. Our results indicated that dissolved organic carbon (DOC) concentrations decreased with increasing temperature and enrichment of δ 13C-DOM. A negative relationship was found between latitude and %protein-like fluorescence, which increased significantly with increasing elevation and enrichment of δ 13C-DOM. Specific ultraviolet absorbance at 254 nm (SUVA) decreased with increasing elevation and enrichment of δ 13C-DOM. Fluorescence intensity of autochthonous microbial humic-like substances increased notably with eutrophication but decreased weakly with warming. DOC, biodegradable DOC, chlorophyll-a, δ 13C-DOC and autochthonous substances identified using DOM fluorescence and high resolution mass spectrometry from the mesocosm experiment were notably elevated at the high nutrient levels, while the effect of temperature was insignificant. We conclude that while eutrophication promotes DOM, warming potentially suppresses the accumulation of autochthonous DOM in inland waters.

AB - Harmful algal blooms have become increasingly frequent due to the dual pressure of excessive nutrient loading and climate change in recent years. Algal-derived dissolved organic matter (DOM) is a potentially large component of the labile organic matter pool, and also climate warming may affect the DOM pool, although the results on the latter so far are equivocal. The question of how eutrophication and climate warming may drive the accumulation of autochthonous DOM is much debated. Here, we analysed published data on DOM world-wide and field data that we collected from 97 lakes and major rivers in China (> 4500 samples) as well as results from the longest running shallow-lake mesocosm climate experiment in the world at a research facility in Denmark. Our results indicated that dissolved organic carbon (DOC) concentrations decreased with increasing temperature and enrichment of δ 13C-DOM. A negative relationship was found between latitude and %protein-like fluorescence, which increased significantly with increasing elevation and enrichment of δ 13C-DOM. Specific ultraviolet absorbance at 254 nm (SUVA) decreased with increasing elevation and enrichment of δ 13C-DOM. Fluorescence intensity of autochthonous microbial humic-like substances increased notably with eutrophication but decreased weakly with warming. DOC, biodegradable DOC, chlorophyll-a, δ 13C-DOC and autochthonous substances identified using DOM fluorescence and high resolution mass spectrometry from the mesocosm experiment were notably elevated at the high nutrient levels, while the effect of temperature was insignificant. We conclude that while eutrophication promotes DOM, warming potentially suppresses the accumulation of autochthonous DOM in inland waters.

KW - Chromophoric dissolved organic matter

KW - Climate warming

KW - High-resolution mass spectrometry

KW - Mesocosm

KW - Nutrient enrichment

KW - Parallel factor analysis (PARAFAC)

KW - Stable isotope

UR - http://www.scopus.com/inward/record.url?scp=85052915957&partnerID=8YFLogxK

U2 - 10.1016/j.earscirev.2018.08.013

DO - 10.1016/j.earscirev.2018.08.013

M3 - Journal article

SN - 0012-8252

VL - 185

SP - 928

EP - 937

JO - Earth-Science Reviews

JF - Earth-Science Reviews

ER -

How autochthonous dissolved organic matter responds to eutrophication and climate warming: Evidence from a cross-continental data analysis and experiments

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Keywords

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