Methane-Cycling Microbial Communities in Two South American Hydroelectric Reservoirs

High-throughput amplicon sequencing data and potential activity measurements from sediment samples of two nearby eutrophic hydroelectric reservoirs in South America. The dataset includes relative abundances of methanogens and methanotrophs, with methanotrophs accounting for 2.5 to 7.5% of total Bacteria and methanogens comprising 5 to 65% of archaeal sequences. The data was collected by Cecilia Ghiazza and published under a CC-BY-4.0 license in 2026.

Use Cases

• Modeling methane emission dynamics based on coupled methanogen and methanotroph activity correlations.
• Analyzing spatial and seasonal community structure differences between reservoirs based on amplicon sequencing data.
• Investigating the relationship between algal bloom decay and methanogen diversity dynamics mentioned in the description.

Strengths

• Data couples high-throughput amplicon sequencing with quantified potential activity rates from sediment incubations.
• Covers three sampled sites in each of two reservoirs, allowing for spatial and inter-reservoir comparisons.
• Includes specific relative abundance ranges for key microbial groups (e.g., methanotrophs 2.5-7.5% of Bacteria).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The 2.1 MB file size suggests a relatively small dataset.

Provenance

Source

figshare, author Cecilia Ghiazza.

Collection Method

High-throughput amplicon sequencing and substrate-amended sediment incubation experiments.

Time Range

Seasonal dynamics are mentioned, but specific years are not provided.

Freshness

Last updated 2026-05-07 05:44:05; freshness should be verified.

Geography

Sediments of two nearby eutrophic hydroelectric reservoirs in South America.