Plankton dynamics and biogeochemical fluxes in the Costa Rica Dome: introduction to the CRD Flux and Zinc Experiments

Landry, Michael R.; De Verneil, Alain; Goes, Joaquim I.; Moffett, James W.

doi:10.1093/plankt/fbv103

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

Plankton dynamics and biogeochemical fluxes in the Costa Rica Dome: introduction to the CRD Flux and Zinc Experiments

2016
By Landry, Michael R. ; De Verneil, Alain ; Goes, Joaquim I. ; ...
Source: Journal of Plankton Research, Volume 38, Issue 2, March/April 2016, Pages 167–182, https://doi.org/10.1093/plankt/fbv103

Public Access Version Available on: January 01, 2030, 12:00 AM

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Details:

Journal Title:

Journal of Plankton Research
Personal Author:

Landry, Michael R. ; De Verneil, Alain ; Goes, Joaquim I. ; Moffett, James W.

Landry, Michael R. ; De Verneil, Alain ; Goes, Joaquim I. ; Moffett, James W. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; WPO (Weather Program Office)

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; WPO (Weather Program Office) Less -
Description:

The Costa Rica Dome (CRD) is an open-ocean upwelling system in the Eastern Tropical Pacific that overlies the ocean's largest oxygen minimum zone (OMZ). The region has unique characteristics, biomass dominance by picophytoplankton, suppressed diatoms, high biomass of higher consumers and presumptive trace metal limitation, but is poorly understood in terms of pelagic stock and process relationships, including productivity and production controls. Here, we describe the goals, project design, physical context and major findings of the Flux and Zinc Experiments cruise conducted in June-July 2010 to assess trophic flux relationships and elemental controls on phytoplankton in the CRD. Despite sampling during a year of suppressed summertime surface chlorophyll, cruise results show high productivity (similar to 1 g C m(-2) day(-1)), high new production relative to export, balanced production and grazing, disproportionate biomass-specific productivity of large phytoplankton and high zooplankton stocks. Zinc concentrations are low in surface waters relative to phosphorous and silicate in other regions, providing conditions conducive to picophytoplankton, like Synechococcus, with low Zn requirements. Experiments nonetheless highlight phytoplankton limitation or co-limitation by silicic acid, driven by a strong silica pump that is linked to low dissolution of biogenic silica in the cold shallow thermocline of the lower euphotic zone.
Keywords:

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Biological Response Biomass Community Community Structure Eastern Tropical Pacific Environmental Gradients Equatorial Pacific Food Web Freshwater Biology High-nutrient Limitation Marine Oceanography Phytoplankton Production Silicic-acid Structure Trophic
Source:

Journal of Plankton Research, Volume 38, Issue 2, March/April 2016, Pages 167–182, https://doi.org/10.1093/plankt/fbv103
DOI:

https://doi.org/10.1093/plankt/fbv103
Pubmed ID:

27275023
Pubmed Central ID:

PMC4889988
Document Type:

Journal Article
Place as Subject:

Arabian Sea
Compliance:

PMC
Main Document Checksum:

[+]

urn:sha256:28d76a707669d69a3a5184024c751b4da107c02cdfe2116280fcc8ff3545bfd2
File Type:

Supporting Files:

No Additional Files

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