Microbial Metabolic Limitations and Their Relationships with Sediment Organic Carbon Across Lake Salinity Gradient in Tibetan Plateau Article Swipe
Weizhen Zhang
,
Jianjun Wang
,
Yun Li
,
Chao Song
,
Yongqiang Zhou
,
Xianqiang Meng
,
Ruirui Chen
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/microorganisms13030629
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/microorganisms13030629
Inland lakes, contributing substantially to the global storage of sediment organic carbon (SOC), are subject to marked changes in salinity due to climate warming. The imbalance in the supply of resources, such as carbon, nitrogen, and phosphorus, in sediments leads to microbial metabolic limitations (MMLs). This, in turn, triggers the secretion of extracellular enzymes by microorganisms to mine for deficient resources by decomposing complex organic carbon. This process is a rate-limiting step in the degradation of organic carbon and, as a result, has the potential to regulate organic carbon stocks. However, the general understanding of MML patterns and their relationships with SOC content along lake salinity gradients remains elusive. This study examined 25 lakes on the Tibetan Plateau with salinity ranging from 0.13‰ to 31.06‰, analyzing MMLs through enzymatic stoichiometry. The results showed that sediment microbial metabolism was mainly limited by carbon and nitrogen, with stronger limitations at higher salinity. Water salinity and sediment pH were the main factors influencing microbial limitations, either directly or indirectly, through their effects on nutrients and microbial diversity. Additionally, the SOC content was negatively correlated with microbial carbon limitation, a relationship weakened when salinity and pH were controlled. These findings suggest that the decrease in SOC with increased salinity or pH could be driven by stronger microbial carbon limitations, offering insights into the impact of salinity changes on SOC stocks in inland lakes due to climate change.
Related Topics
Concepts
Salinity
Sediment
Total organic carbon
Environmental science
Environmental chemistry
Carbon cycle
Nutrient
Carbon fibers
Microbial population biology
Climate change
Global warming
Dissolved organic carbon
Ecology
Ecosystem
Chemistry
Geology
Biology
Bacteria
Geomorphology
Composite material
Composite number
Paleontology
Materials science
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/microorganisms13030629
- https://www.mdpi.com/2076-2607/13/3/629/pdf?version=1741655651
- OA Status
- gold
- Cited By
- 1
- References
- 100
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4408332904
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4408332904Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/microorganisms13030629Digital Object Identifier
- Title
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Microbial Metabolic Limitations and Their Relationships with Sediment Organic Carbon Across Lake Salinity Gradient in Tibetan PlateauWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2025Year of publication
- Publication date
-
2025-03-11Full publication date if available
- Authors
-
Weizhen Zhang, Jianjun Wang, Yun Li, Chao Song, Yongqiang Zhou, Xianqiang Meng, Ruirui ChenList of authors in order
- Landing page
-
https://doi.org/10.3390/microorganisms13030629Publisher landing page
- PDF URL
-
https://www.mdpi.com/2076-2607/13/3/629/pdf?version=1741655651Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
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https://www.mdpi.com/2076-2607/13/3/629/pdf?version=1741655651Direct OA link when available
- Concepts
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Salinity, Sediment, Total organic carbon, Environmental science, Environmental chemistry, Carbon cycle, Nutrient, Carbon fibers, Microbial population biology, Climate change, Global warming, Dissolved organic carbon, Ecology, Ecosystem, Chemistry, Geology, Biology, Bacteria, Geomorphology, Composite material, Composite number, Paleontology, Materials scienceTop concepts (fields/topics) attached by OpenAlex
- Cited by
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1Total citation count in OpenAlex
- Citations by year (recent)
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2025: 1Per-year citation counts (last 5 years)
- References (count)
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100Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.microorganisms | 55 |
| abstract_inverted_index.stoichiometry. | 129 |
| cited_by_percentile_year.max | 95 |
| cited_by_percentile_year.min | 91 |
| corresponding_author_ids | https://openalex.org/A5102705936 |
| countries_distinct_count | 1 |
| institutions_distinct_count | 7 |
| corresponding_institution_ids | https://openalex.org/I76214153 |
| citation_normalized_percentile.value | 0.84811728 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | True |