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| Main Authors: | , , , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Science (New York, N.Y.)
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40403069/ |
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Table of Contents:
- Functional biogeography of marine microbial heterotrophs. Zakem, Emily J McNichol, Jesse Weissman, J L Raut, Yubin Xu, Liang Halewood, Elisa R Carlson, Craig A Dutkiewicz, Stephanie Fuhrman, Jed A Levine, Naomi M Aquatic Organisms Archaea Bacteria Carbon Cycle Ecosystem Heterotrophic Processes Oceans and Seas Phylogeography Seawater Heterotrophic bacteria and archaea ("heteroprokaryotes") drive global carbon cycling, but how to quantitatively organize their functional complexity remains unclear. We generated a global-scale understanding of marine heteroprokaryotic functional biogeography by synthesizing genetic sequencing data with a mechanistic marine ecosystem model. We incorporated heteroprokaryotic diversity into the trait-based model along two axes: substrate lability and growth strategy. Using genetic sequences along three ocean transects, we compiled 21 heteroprokaryotic guilds and estimated their degree of optimization for rapid growth (copiotrophy). Data and model consistency indicated that gradients in grazing and substrate lability predominantly set biogeographical patterns, and we identified deep-ocean "slow copiotrophs" whose ecological interactions control the surface accumulation of dissolved organic carbon.