@article{fdi:010091288,
  title = {{L}ow-latitude mesopelagic nutrient recycling controls productivity and export},
  author = {{R}odgers, {K}. {B}. and {A}umont, {O}livier and {T}oyama, {K}. and {R}esplandy, {L}. and {I}shii, {M}. and {N}akano, {T}. and {S}asano, {D}. and {B}ianchi, {D}. and {Y}amaguchi, {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{L}ow-latitude ({LL}) oceans account for up to half of global net primary production and export(1,2,3,4,5). {I}t has been argued that the {S}outhern {O}cean dominates {LL} primary production and export(6), with implications for the response of global primary production and export to climate change(7). {H}ere we applied observational analyses and sensitivity studies to an individual model to show, instead, that 72% of {LL} primary production and 55% of export is controlled by local mesopelagic macronutrient cycling. {A} total of 34% of the {LL} export is sustained by preformed macronutrients supplied from the {S}outhern {O}cean via a deeper overturning cell, with a shallow preformed northward supply, crossing 30 degrees {S} through subpolar and thermocline water masses, sustaining only 7% of the {LL} export. {A}nalyses of five {C}oupled {M}odel {I}ntercomparison {P}roject {P}hase 6 ({CMIP}6) models, run under both high-emissions low-mitigation (shared socioeconomic pathway ({SSP}5-8.5)) and low-emissions high-mitigation ({SSP}1-2.6) climate scenarios for 1850-2300, revealed significant across-model disparities in their projections of not only the amplitude, but also the sign, of {LL} primary production. {U}nder the stronger {SSP}5-8.5 forcing, with more substantial upper-ocean warming, the {CMIP}6 models that account for temperature-dependent remineralization promoted enhanced {LL} mesopelagic nutrient retention under warming, with this providing a first-order contribution to stabilizing or increasing, rather than decreasing, {LL} production under high emissions and low mitigation. {T}his underscores the importance of a mechanistic understanding of mesopelagic remineralization and its sensitivity to ocean warming for predicting future ecosystem changes.},
  keywords = {{OCEAN} {AUSTRAL}, {ATLANTIQUE} ; {PACIFIQUE} ; {OCEAN} {INDIEN}},
  booktitle = {},
  journal = {{N}ature},
  volume = {632},
  numero = {8026},
  pages = {[19 p.]},
  ISSN = {0028-0836},
  year = {2024},
  DOI = {10.1038/s41586-024-07779-1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091288},
}