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Converting Relative Amplicon Abundances to Absolute Abundances via Flow Cytometry: Metagenomic Validation and Application to Long Ocean Transects Abstract. With microbes critical for ocean ecological and biogeochemical processes, we need to understand their abundance and diversity distributions. Whil

Converting Relative Amplicon Abundances to Absolute Abundances via Flow Cytometry: Metagenomic Validation and Application to Long Ocean Transects #USC_MEB #jcampubs 🌊 academic.oup.com/ismecommun/a...

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Ocean warming enhances iron use efficiencies of marine ammonia-oxidizing archaea #USC_MEB www.pnas.org/doi/abs/10.1... #jcampubs

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Microbial exoenzymes catalyzed the transition to an oxygenated Earth #USC_MEB #jcampubs www.biorxiv.org/content/10.1...

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Vitamin auxotrophies shape microbial community assembly on model marine particles #USC_MEB #jcampubs 🌊 academic.oup.com/ismej/advanc...

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Functional genomic signatures predict microbial culturability across the tree of life #USC_MEB #USC_earth #jcampubs www.biorxiv.org/content/10.1...

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Quantitative metagenomics for marine prokaryotes and photosynthetic eukaryotes Abstract. High-throughput sequencing has provided unprecedented insights into microbial biodiversity in marine and other ecosystems. However, most sequenci

Quantitative metagenomics for marine prokaryotes and photosynthetic eukaryotes #USC_MEB #jcampubs 🌊 academic.oup.com/ismecommun/a...

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Characterizing organisms from three domains of life with universal primers from throughout the global ocean - Scientific Data Scientific Data - Characterizing organisms from three domains of life with universal primers from throughout the global ocean

Characterizing organisms from three domains of life with universal primers from throughout the global ocean #USC_MEB #jcampubs 🌊 www.nature.com/articles/s41...

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A low oxygen threshold for physiological responses and trace metal quotas of Prochlorococcus and Synechococcus #USC_MEB #USC_earth aslopubs.onlinelibrary.wiley.com/doi/10.1002/... #jcampubs 🌊

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Contrasting Responses of Oceanic and Coastal Synechococcus to Iron Limitation and Warming Interactions Oceanic Synechococcus respond to the interactive effects of iron (Fe) limitation and ocean warming by regulating photosynthesis, nutrient metabolism, and heat shock gene expression, while a coastal s...

Contrasting Responses of Oceanic and Coastal Synechococcus to Iron Limitation and Warming Interactions #USC_MEB #ResearchAtUSC #jcampubs 🌊 enviromicro-journals.onlinelibrary.wiley.com/doi/10.1111/...

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New niches for larger phytoplankton in a warmer, more resource-limited ocean Warming and nutrient limitation are major stressors that affect primary production in the ocean, with cascading impacts on the food web. Yet, we lack a mechanistic understanding of how phytoplankton m...

New niches for larger phytoplankton in a warmer, more resource-limited ocean #USC_MEB #ResearchAtUSC #jcampubs 🌊 www.biorxiv.org/content/10.1...

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Defining ultra-slow-growing extremophilic microorganisms as aeonophiles - Nature Microbiology In environments like the deep subsurface, microorganisms with long doubling times can remain metabolically active for millions of years — we propose referring to this class of extremophile as aeonophi...

Defining ultra-slow-growing extremophilic microorganisms as aeonophiles #USC_earth #USC_MEB #jcampubs www.nature.com/articles/s41...

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Distinct survival strategies in oligotrophic and eutrophic ecotype Synechococcus-bacteria co-cultures under iron limitation and warming conditions #USC_MEB #ResearchAtUSC #jcampubs journals.asm.org/doi/full/10....

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Functional biogeography of marine microbial heterotrophs Heterotrophic bacteria and archaea (“heteroprokaryotes”) drive global carbon cycling, but how to quantitatively organize their functional complexity remains unclear. We generated a global-scale unders...

Functional biogeography of marine microbial heterotrophs #USC_MEB #ResearchAtUSC www.science.org/doi/abs/10.1... #jcampubs 🌊

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Using environmental science to affect policy management: Karla Heidelberg USC Sea Grant director Karla Heidelberg is a scientist, educator in ocean research, education, policy and public engagement.

Using environmental science to affect policy management: Karla Heidelberg - USC Today @uscseagrant.bsky.social #usc_meb today.usc.edu/using-enviro...

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Hunting extreme microbes that redefine the limits of life An adventurous survey of inhospitable habitats unearths extraordinary organisms that pose challenging research questions.

Hunting extreme microbes that redefine the limits of life

book by @karenlloyd.bsky.social #usc_earth #usc_meb
www.nature.com/articles/d41...

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Variational inference for microbiome survey data with application to global ocean data Abstract. Linking sequence-derived microbial taxa abundances to host (patho-)physiology or habitat characteristics in a reproducible and interpretable mann

Variational inference for microbiome survey data with application to global ocean data #USC_MEB #ResearchAtUSC academic.oup.com/ismecommun/a... #jcampubs 🌊

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New isolates refine the ecophysiology of the Roseobacter CHAB-I-5 lineage Abstract. The CHAB-I-5 cluster is a pelagic lineage that can comprise a significant proportion of all roseobacters in surface oceans and has predicted role

Our latest culturing story! An international collaboration! Roseobacter!

New isolates refine the ecophysiology of the Roseobacter CHAB-I-5 lineage #USC_MEB #ResearchAtUSC academic.oup.com/ismecommun/a... #jcampubs 🌊

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Temporal and spatial dynamics of harmful algal bloom-associated microbial communities in eutrophic Clear Lake, California #USC_MEB #ResearchAtUSC journals.asm.org/doi/full/10.... #jcampubs

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A Multidomain Lens on the Temporal Dynamics of Surface Microbial Communities in the Southern Ocean (2013–2019) #USC_MEB #ResearchAtUSC www.biorxiv.org/content/10.1... #jcampubs 🌊

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Traits enabling persistence of living Promethearchaeota in marine sediments frozen for over 100 kyr #USC_MEB #USC_earth #ResearchAtUSC www.biorxiv.org/content/10.1... #jcampubs

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Characterizing organisms from three domains of life with universal primers from throughout the global ocean #USC_MEB #ResearchAtUSC www.biorxiv.org/content/10.1... #jcampubs 🌊

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With a little help from my friends: importance of protist-protist interactions in structuring marine protistan communities in the San Pedro Channel #usc_meb #ResearchAtUSC journals.asm.org/doi/full/10.... #jcampubs 🌊

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Eddy dipole differentially influences particle‐associated and water column protistan community composition #USC_MEB #ResearchAtUSC aslopubs.onlinelibrary.wiley.com/doi/10.1002/... #jcampubs

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Several major fires burning in LA now spurred by an unusual and massive wind storm. Some #USC_MEB colleagues are having to evacuate from their homes. I'm going to post papers today, but it's a heavy one.

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Calorimetric measurement of energy and nutrient stimulation of microorganisms from the continental deep subsurface #USC_MEB #USC_earth www.frontiersin.org/journals/mic...

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Nutrient colimitation is a quantitative, dynamic property of microbial populations #USC_MEB #ResearchAtUSC www.pnas.org/doi/abs/10.1... #jcampubs 🌊

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Methane leakage through the sulfate–methane transition zone of the Baltic seabed - Nature Geoscience Inhibition of anaerobic methane oxidation in organic-rich marine sediments causes widespread methane leakage from the seabed, according to an analysis of sediment cores from the Baltic Sea.

Methane leakage through the sulfate–methane transition zone of the Baltic seabed #USC_MEB #USC_earth www.nature.com/articles/s41... #jcampubs

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The subseafloor crustal biosphere: Ocean’s hidden biogeochemical reactor #USC_MEB #ResearchAtUSC www.frontiersin.org/journals/mic... #jcampubs 🌊

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Control of hydrogen concentrations by microbial sulfate reduction in two contrasting anoxic coastal sediments #USC_earth #USC_MEB #ResearchAtUSC www.frontiersin.org/journals/mic... #jcampubs

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Marine N2-fixer Crocosphaera waterburyi #USC_MEB #ResearchAtUSC academic.oup.com/ismej/advanc... #jcampubs 🌊

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