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Composition of dissolved organic matter (DOM) in lakes responds to the trophic state and phytoplankton community succession
Abstract
Dissolved organic matter (DOM), a heterogeneous mixture of diverse compounds with different molecular weights, is crucial for the lake carbon cycle. The properties and concentration of DOM in lakes are closely related to anthropogenic activities, terrigenous input, and phytoplankton growth. Thus, the lake's trophic state, along with the above factors, has an important effect on DOM. We determined the DOM sources and molecular composition in six lakes along a trophic gradient during and after phytoplankton bloom by combining optical techniques and the Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). CDOM pools in eutrophic lakes may be more biologically refractory than in oligotrophic and mesotrophic lakes. Molecular formulas of DOM were positively correlated with the TSI (trophic state index) value (R 2 = 0.73), with the nitrogen-containing compounds (CHON) being the most abundant formulas in all studied lakes. Eutrophication modified the molecular formulas of DOM to have less CHO% and more heteroatom S-containing compounds (CHOS% and CHNOS%), and this was the synactic result of the anthropogenic perturbation and phytoplankton proliferation. In eutrophic lakes, summer DOM showed higher molecular lability than in autumn, which was related to the seasonal phytoplankton community succession. Although the phytoplankton-derived DOM is highly bioavailable, we detected a simpler and more fragile phytoplankton community ecosystem in autumn, which may be accomp…
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“Input from human activities such as sewage discharge and industrial runoff could be the reason for high proportions of CHOS (Liu et al., 2020; Wen et al., 2022).”
From Molecular characteristics of emerging perfluoroalkyl and polyfluoroalkyl substances (PFAS) and dissolved organic matter (DOM) in surface waters around fluorine-related industries in a Chinese Megacity (2025) · cites this paper as Wen et al., 2022
In the citing paper
“However, in eutrophic water bodies, light penetration was reduced, leading to a decrease in photochemical reactions. Consequently, highly unsaturated compounds could accumulate (Wen et al., 2022).”
From Molecular characteristics of emerging perfluoroalkyl and polyfluoroalkyl substances (PFAS) and dissolved organic matter (DOM) in surface waters around fluorine-related industries in a Chinese Megacity (2025) · cites this paper as Wen et al., 2022
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Cited by
Sorted by citations
Li, S., Liu, J., An, X., Tang, C., Tang, C., Zhang, B., Chen, C., Lin, T., Jones, K. C., & Zhao, Z. (2025) · Environment International · doi:10.1016/j.envint.2025.109444 · Cited by 14
Self-citation
Metadata
- Authors
- Wen, Z., Shang, Y., Song, K., Liu, G., Hou, J., Lyu, L., Tao, H., Li, S., He, C., Shi, Q., & He, D.
- Affiliations
- Chinese Academy of Sciences (CN)
- Liaocheng University (CN)
- China University of Petroleum, Beijing (CN)
- Hong Kong University of Science and Technology (HK)
- Corresponding author
- Shang, Yingxin
- Song, Kaishan
- ORCID
- Venue
- Water Research
- Publisher
- Elsevier BV
- Published
- 2022-10
- Volume
- 224
- Pages
- 119073
- ISSN
- 0043-1354 (ISSN-L)
- OpenAlex
- W4295743089
- Cited by
- 158
- References
- 0
- Citations by year
- 2026: 41 · 2025: 48 · 2024: 43 · 2023: 24 · 2022: 2
- FWCI
- 14.43
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Water Research (publishedVersion)
- PubMed (publishedVersion)
- Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine Plankton and Biogeochemistry
- Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Physical Sciences › Environmental Science › Environmental Chemistry › Soil and Water Nutrient Dynamics
- Keywords
- dissolved organic matter, lake trophic state, eutrophication, phytoplankton blooms, phytoplankton succession, DOM molecular composition, seasonal variation, lake carbon cycle, anthropogenic nutrient inputs
- MeSH terms
- Dissolved Organic Matter, China, Nitrogen, Phytoplankton, Sewage, Water, Ecosystem, Lakes
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