How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic

Publication: ResearchArticle in proceedings – Annual report year: 2012

Standard

How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic. / Ferreira, Ana Sofia; Payne, Mark; MacKenzie, Brian; Visser, Andre.

ICES CM 2012/R:03. Copenhagen : International Council for the Exploration of the Sea (ICES), 2012.

Publication: ResearchArticle in proceedings – Annual report year: 2012

Harvard

Ferreira, AS, Payne, M, MacKenzie, B & Visser, A 2012, 'How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic'. in ICES CM 2012/R:03. International Council for the Exploration of the Sea (ICES), Copenhagen.

APA

Ferreira, A. S., Payne, M., MacKenzie, B., & Visser, A. (2012). How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic. In ICES CM 2012/R:03. Copenhagen: International Council for the Exploration of the Sea (ICES).

CBE

Ferreira AS, Payne M, MacKenzie B, Visser A. 2012. How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic. In ICES CM 2012/R:03. Copenhagen: International Council for the Exploration of the Sea (ICES).

MLA

Ferreira, Ana Sofia et al. "How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic". ICES CM 2012/R:03. Copenhagen: International Council for the Exploration of the Sea (ICES). 2012.

Vancouver

Ferreira AS, Payne M, MacKenzie B, Visser A. How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic. In ICES CM 2012/R:03. Copenhagen: International Council for the Exploration of the Sea (ICES). 2012.

Author

Ferreira, Ana Sofia; Payne, Mark; MacKenzie, Brian; Visser, Andre / How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic.

ICES CM 2012/R:03. Copenhagen : International Council for the Exploration of the Sea (ICES), 2012.

Publication: ResearchArticle in proceedings – Annual report year: 2012

Bibtex

@inbook{aceb7db0ceac4dfc9b65d65da0745198,
title = "How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic",
publisher = "International Council for the Exploration of the Sea (ICES)",
author = "Ferreira, {Ana Sofia} and Mark Payne and Brian MacKenzie and Andre Visser",
year = "2012",
booktitle = "ICES CM 2012/R:03",

}

RIS

TY - GEN

T1 - How the Subpolar gyre strength influences phytoplankton blooms dynamics in the North Atlantic

A1 - Ferreira,Ana Sofia

A1 - Payne,Mark

A1 - MacKenzie,Brian

A1 - Visser,Andre

AU - Ferreira,Ana Sofia

AU - Payne,Mark

AU - MacKenzie,Brian

AU - Visser,Andre

PB - International Council for the Exploration of the Sea (ICES)

CY - Copenhagen

PY - 2012

Y1 - 2012

N2 - Changes in the North Atlantic Subpolar gyre (NASPG) have been linked to the interannual variability of primary production. However, little is known about the mechanisms behind both environmental processes, and how the NASPG strength may extend its potential impacts to higher trophic levels, including early life stages of commercial fish species. We assess NASPG strength effect on North Atlantic phytoplankton bloom dynamics. We analyse time‐series (from 1998 to <br/>2010) of chlorophyll a (Chl a, from the Globcolour project) annual anomaly as a proxy of phytoplankton abundance, and of sea surface height (SSH, from the AVISO project) as a proxy of current strength. Three regions were strategically chosen to characterize positions relative to the NASPG, describing: region 1—the northern part of NASPG, including the Irminger Current (IC); region 2—the North Atlantic Current (NAC), its northwards drift, and the influence of the NASPG <br/>strength; and region 3—the within‐NASPG dynamics. It is hypothesized that a strong NASPG index will be associated with a low‐abundance, late phytoplankton bloom, possibly induced by higher heat losses, and thus lower temperatures. A correlation between the annual anomaly in chlorophyll concentrations and the gyre index was found for the southern region (region 3). <br/>Indications of a strong influence of NASPG index are related to areas within the gyre, which may have an impact in the ecosystem functioning. The results also suggest that physical forcing other than the strength of the NASPG influence the primary production of the more northerly regions east and west of Iceland

AB - Changes in the North Atlantic Subpolar gyre (NASPG) have been linked to the interannual variability of primary production. However, little is known about the mechanisms behind both environmental processes, and how the NASPG strength may extend its potential impacts to higher trophic levels, including early life stages of commercial fish species. We assess NASPG strength effect on North Atlantic phytoplankton bloom dynamics. We analyse time‐series (from 1998 to <br/>2010) of chlorophyll a (Chl a, from the Globcolour project) annual anomaly as a proxy of phytoplankton abundance, and of sea surface height (SSH, from the AVISO project) as a proxy of current strength. Three regions were strategically chosen to characterize positions relative to the NASPG, describing: region 1—the northern part of NASPG, including the Irminger Current (IC); region 2—the North Atlantic Current (NAC), its northwards drift, and the influence of the NASPG <br/>strength; and region 3—the within‐NASPG dynamics. It is hypothesized that a strong NASPG index will be associated with a low‐abundance, late phytoplankton bloom, possibly induced by higher heat losses, and thus lower temperatures. A correlation between the annual anomaly in chlorophyll concentrations and the gyre index was found for the southern region (region 3). <br/>Indications of a strong influence of NASPG index are related to areas within the gyre, which may have an impact in the ecosystem functioning. The results also suggest that physical forcing other than the strength of the NASPG influence the primary production of the more northerly regions east and west of Iceland

UR - http://ices.dk/products/CMdocs/CM-2012/R/R0312.pdf

BT - ICES CM 2012/R:03

T2 - ICES CM 2012/R:03

ER -