Primary production, water column changes, and the demise of a Phaeocystis bloom at the Marine Light-Mixed Layers site (59°N, 21°W) in the northeast Atlantic Ocean

J. Marra, Chris Langdon, C. A. Knudson

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Primary production in incubations is compared with daily changes in water column oxygen inventories and particulate organic carbon (POC) at a station in the NE Atlantic (the Marine Light-Mixed Layers site) in the spring of 1991. Drifters were followed over three periods. The first is characterized by a bloom of Phaeocystis pouchetii. Prior to the second and third deployments, storms mixed the water column and the bloom dissipated. After deployment of the third drifter, the water column restratified, followed by high rates of primary production. All incubation experiments for carbon assimilation were greater than that calculated from changes in oxygen or POC. The 14C estimates agreed with the prediction of a bio-optical model for primary production. -from Authors

Original languageEnglish
Pages (from-to)6633-6643
Number of pages11
JournalJournal of Geophysical Research
Volume100
Issue numberC4
DOIs
StatePublished - Dec 1 1995
Externally publishedYes

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Atlantic Ocean
mixed layer
primary production
algal bloom
drifter
water column
particulate organic carbon
Organic carbon
particulates
Water
carbon
ocean
incubation
water
Oxygen
oxygen
assimilation
Carbon
stations
estimates

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

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T1 - Primary production, water column changes, and the demise of a Phaeocystis bloom at the Marine Light-Mixed Layers site (59°N, 21°W) in the northeast Atlantic Ocean

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AU - Langdon, Chris

AU - Knudson, C. A.

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N2 - Primary production in incubations is compared with daily changes in water column oxygen inventories and particulate organic carbon (POC) at a station in the NE Atlantic (the Marine Light-Mixed Layers site) in the spring of 1991. Drifters were followed over three periods. The first is characterized by a bloom of Phaeocystis pouchetii. Prior to the second and third deployments, storms mixed the water column and the bloom dissipated. After deployment of the third drifter, the water column restratified, followed by high rates of primary production. All incubation experiments for carbon assimilation were greater than that calculated from changes in oxygen or POC. The 14C estimates agreed with the prediction of a bio-optical model for primary production. -from Authors

AB - Primary production in incubations is compared with daily changes in water column oxygen inventories and particulate organic carbon (POC) at a station in the NE Atlantic (the Marine Light-Mixed Layers site) in the spring of 1991. Drifters were followed over three periods. The first is characterized by a bloom of Phaeocystis pouchetii. Prior to the second and third deployments, storms mixed the water column and the bloom dissipated. After deployment of the third drifter, the water column restratified, followed by high rates of primary production. All incubation experiments for carbon assimilation were greater than that calculated from changes in oxygen or POC. The 14C estimates agreed with the prediction of a bio-optical model for primary production. -from Authors

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