Submerged macrophyte restoration enhanced microbial carbon utilization in shallow lakes
Yao Guo1, Songsong Gu2, Andrew J Tanentzap3
1Key laboratory of Lake and Watershed Science for Water Security, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
The Science of the Total Environment
|May 21, 2024
Summary
Restoring submerged macrophytes in shallow lakes significantly enhances microbial carbon utilization in sediments. This restoration effort improves carbon sequestration potential by altering microbial community composition and function.
Area of Science:
- Ecology
- Microbiology
- Environmental Science
Background:
- Submerged macrophytes are crucial for shallow lake ecosystems.
- Limited knowledge exists on microbial community responses to macrophyte restoration after historical extirpation.
Purpose of the Study:
- To investigate the impact of submerged macrophyte restoration on prokaryotic communities and carbon utilization in shallow lakes.
- To understand how microbial interactions influence carbon cycling post-restoration.
Main Methods:
- Comparison of microbial communities and carbon content in restored and control lake treatments.
- Analysis of prokaryotic community structure and function related to carbon substrate utilization.
- Assessment of changes in sediment and water carbon parameters.
Main Results:
- Macrophyte restoration reduced sediment total carbon and total organic carbon.
- Sediment microbial communities exhibited enhanced utilization of simple carbon substrates post-restoration.
- Planktonic microbes were less sensitive to restoration than sediment microbes.
Conclusions:
- Submerged macrophyte restoration positively influences microbial carbon utilization in shallow lake sediments.
- Restoration can alter microbial community composition, favoring enhanced carbon substrate utilization.
- Findings offer guidance for improving carbon sequestration in restored shallow lake ecosystems.
