logo
ResearchBunny Logo
Decoding drivers of carbon flux attenuation in the oceanic biological pump

Earth Sciences

Decoding drivers of carbon flux attenuation in the oceanic biological pump

M. Bressac, E. C. Laurenceau-cornec, et al.

This study by M. Bressac and colleagues reveals the dynamics of the biological pump and the role of microbial processes in oceanic carbon flow. Using in situ experiments from C-RESPIRE, the research uncovers how microbial degradation impacts particle flux attenuation across diverse oceanic environments.

00:00
00:00
Playback language: English
Abstract
The biological pump's efficiency, determined by particle transformations in the euphotic zone and mesopelagic processes, is typically parameterized using the Martin curve. This study uses in situ experiments from C-RESPIRE to measure microbially mediated POC flux attenuation across six oceanic regimes. Microbial degradation comprised 7–29% of flux attenuation, suggesting a more significant zooplankton role. Microbial remineralization varied 20-fold across sites and depths, with lower rates at high POC fluxes. Vertical trends were linked to temperature gradients at low-latitude sites, but other factors influenced mid- and high-latitude sites. This deconstruction of the Martin curve reveals the mechanisms driving microbially mediated POC flux attenuation.
Publisher
Nature
Published On
Sep 19, 2024
Authors
M. Bressac, E. C. Laurenceau-Cornec, F. Kennedy, A. E. Santoro, N. L. Paul, N. Briggs, F. Carvalho, P. W. Boyd
Tags
biological pump
microbial degradation
oceanic regimes
POC flux attenuation
Martin curve
temperature gradients
zooplankton role

Related Publications

Explore these studies to deepen your understanding of the subject.

Tracing the path of carbon export in the ocean though DNA sequencing of individual sinking particles
Earth Sciences

Tracing the path of carbon export in the ocean though DNA sequencing of individual sinking particles

C. A. Durkin, I. Cetinić, et al.

Transitioning to low-carbon agriculture: the non-linear role of digital inclusive finance in China's agricultural carbon emissions
Agriculture

Transitioning to low-carbon agriculture: the non-linear role of digital inclusive finance in China's agricultural carbon emissions

H. Li, H. Tian, et al.

Microbes contribute to setting the ocean carbon flux by altering the fate of sinking particulates
Earth Sciences

Microbes contribute to setting the ocean carbon flux by altering the fate of sinking particulates

T. T. H. Nguyen, E. J. Zakem, et al.

The dual effect of digital communication reinforcement drivers on purchase intention in the social commerce environment
Business

The dual effect of digital communication reinforcement drivers on purchase intention in the social commerce environment

K. M. Selem, M. H. Shoukat, et al.

Listen, Learn & Level Up
Over 10,000 hours of research content in 25+ fields, available in 12+ languages.
No more digging through PDFs, just hit play and absorb the world's latest research in your language, on your time.
listen to research audio papers with researchbunny