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.

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

Status: final response (author comments only)

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
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

Viewed

Since the preprint corresponding to this journal article was posted outside of Copernicus Publications, the preprint-related metrics are limited to HTML views.

Total article views: 184 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
184 0 0 184 0 0
  • HTML: 184
  • PDF: 0
  • XML: 0
  • Total: 184
  • BibTeX: 0
  • EndNote: 0
Views and downloads (calculated since 20 Nov 2023)
Cumulative views and downloads (calculated since 20 Nov 2023)

Viewed (geographical distribution)

Since the preprint corresponding to this journal article was posted outside of Copernicus Publications, the preprint-related metrics are limited to HTML views.

Total article views: 183 (including HTML, PDF, and XML) Thereof 183 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 19 Jun 2024
Download
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.