ArticleScientific reports2022
Intra- and inter-spatial variability of meiofauna in hadal trenches is linked to microbial activity and food availability.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Phloxine B Staining is Compatible With High-Throughput DNA Barcoding of Meiofauna.Ecology and evolution · 2026Article
- Chemical pollution drives taxonomic and functional shifts in marine sediment microbiome, influencing benthic metazoans.ISME communications · 2025Article
- Microbial communities reveal niche partitioning across the slope and bottom zones of the challenger deep.Environmental microbiology reports · 2024Article
- Fungal Abundance and Diversity in the Mariana Trench, the Deepest Ecosystem on Earth.Journal of fungi (Basel, Switzerland) · 2024Article
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Authors and funding
7 authors.
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Abstract
Hadal trenches are depocenters for organic material, and host intensified benthic microbial activity. The enhanced deposition is presumed to be reflected in elevated meiofaunal standing-stock, but available studies are ambiguous. Here, we investigate the distribution of meiofauna along the Atacama Trench axis and adjacent abyssal and bathyal settings in order to relate the meiofauna densities to proxies for food availability. Meiofauna densities peaked at the sediment surface and attenuated steeply with increasing sediment depth. The distribution mirrored the vertical profile of the microbial-driven oxygen consumption rate demonstrating a close linkage between microbial activity and meiofauna density. Meiofaunal standing-stock along the trench axis varied by a factor of two, but were markedly higher than values from the abyssal site at the oceanic plate. Overall, meiofaunal densities poorly correlated with common proxies for food availability such as total organic carbon and phytopigments, but strongly correlated with the microbial benthic O
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