Preprints
https://doi.org/10.22541/essoar.168394764.42259309/v1
https://doi.org/10.22541/essoar.168394764.42259309/v1
20 Nov 2023
 | 20 Nov 2023

Elemental Stoichiometry of Particulate Organic Matter across the Atlantic Ocean

Adam James Fagan, Tatsuro Tanioka, Alyse Larkin, Jenna Alyson Lee, Nathan Garcia, and Adam Camillo Martiny

Abstract. Recent studies show that stoichiometric elemental ratios of marine ecosystems are not static at Redfield proportions but vary systematically between biomes. However, the wider Atlantic Ocean is under-sampled for particulate organic matter (POM) elemental composition, especially as it comes to phosphorus. Thus, it is uncertain how environmental variation in this region translates into shifts in C:N:P. To address this, we analyzed hydrography, genomics, and POM concentrations from 877 stations on the meridional transects AMT28 and C13.5, spanning the Atlantic Ocean. We observed nutrient-replete, high-latitude ecosystem C:N:P to be significantly lower than the oligotrophic gyres. Latitudinal and meridional differences in elemental stoichiometry were linked to overall nutrient supply as well as N vs. P limitation. C:P and N:P were generally higher in the P-stressed northern region compared to southern hemisphere regions. We also detected a zonal difference linked to a westward deepening nutricline and a shift from N to P limitation. We also evaluated possible seasonal changes in C:N:P across the basin and predicted these ratios to be limited. Overall, this study confirms latitudinal shifts in surface ocean POM ratios but reveals previously unrecognized hemisphere and zonal gradients. This work demonstrates the importance of understanding how regional shifts in hydrography and type of nutrient stress shape the coupling between Atlantic Ocean nutrient and carbon cycles.

Journal article(s) based on this preprint

30 Sep 2024
Elemental stoichiometry of particulate organic matter across the Atlantic Ocean
Adam J. Fagan, Tatsuro Tanioka, Alyse A. Larkin, Jenna A. Lee, Nathan S. Garcia, and Adam C. Martiny
Biogeosciences, 21, 4239–4250, https://doi.org/10.5194/bg-21-4239-2024,https://doi.org/10.5194/bg-21-4239-2024, 2024
Short summary
Adam James Fagan, Tatsuro Tanioka, Alyse Larkin, Jenna Alyson Lee, Nathan Garcia, and Adam Camillo Martiny

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-2453', Anonymous Referee #1, 10 Jan 2024
    • AC2: 'Reply on RC1', Adam Fagan, 15 Feb 2024
  • RC2: 'Comment on egusphere-2023-2453', Anonymous Referee #2, 15 Jan 2024
    • AC1: 'Reply on RC2', Adam Fagan, 15 Feb 2024

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-2453', Anonymous Referee #1, 10 Jan 2024
    • AC2: 'Reply on RC1', Adam Fagan, 15 Feb 2024
  • RC2: 'Comment on egusphere-2023-2453', Anonymous Referee #2, 15 Jan 2024
    • AC1: 'Reply on RC2', Adam Fagan, 15 Feb 2024

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Reconsider after major revisions (28 Feb 2024) by Koji Suzuki
AR by Adam Fagan on behalf of the Authors (23 May 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (03 Jun 2024) by Koji Suzuki
RR by Anonymous Referee #1 (30 Jun 2024)
ED: Publish subject to technical corrections (07 Jul 2024) by Koji Suzuki
AR by Adam Fagan on behalf of the Authors (16 Jul 2024)  Manuscript 

Journal article(s) based on this preprint

30 Sep 2024
Elemental stoichiometry of particulate organic matter across the Atlantic Ocean
Adam J. Fagan, Tatsuro Tanioka, Alyse A. Larkin, Jenna A. Lee, Nathan S. Garcia, and Adam C. Martiny
Biogeosciences, 21, 4239–4250, https://doi.org/10.5194/bg-21-4239-2024,https://doi.org/10.5194/bg-21-4239-2024, 2024
Short summary
Adam James Fagan, Tatsuro Tanioka, Alyse Larkin, Jenna Alyson Lee, Nathan Garcia, and Adam Camillo Martiny
Adam James Fagan, Tatsuro Tanioka, Alyse Larkin, Jenna Alyson Lee, Nathan Garcia, and Adam Camillo Martiny

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Short summary
Climate change is anticipated to influence the biological pump by altering phytoplankton nutrient distribution. In our research, we collected measurements of particulate matter concentrations during two oceanographic field studies. We observed systematic variations in organic matter concentrations and ratios across the Atlantic Ocean. From statistical modeling, we determined that these variations are associated with differences in the availability of essential nutrients for phytoplankton growth.