Story perspectives

USC Researchers Identify Eight Metabolic Niches in Ocean Microbes

6/3/2026

Summary

Story summary

USC Dornsife researchers identified eight metabolic niches that simplify marine microbial diversity.
Naomi Levine, a USC Dornsife professor, explained that the niches reflect nutrient use and resource limits.
The team used worldwide genetic data and machine-learning clustering to define the eight strategies.
Grouping microbes this way may improve climate models’ representation of ocean carbon cycling, as generalists dominate nutrient-rich coastal zones while specialists prevail in nutrient-poor open-ocean waters.

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Story summary

USC Dornsife researchers identified eight metabolic niches that simplify marine microbial diversity.
Naomi Levine, a USC Dornsife professor, explained that the niches reflect nutrient use and resource limits.
The team used worldwide genetic data and machine-learning clustering to define the eight strategies.
Grouping microbes this way may improve climate models’ representation of ocean carbon cycling, as generalists dominate nutrient-rich coastal zones while specialists prevail in nutrient-poor open-ocean waters.