Importance of coastal nutrient supply for global ocean biogeochemistry

The coastal ocean provides nutrients to the open ocean in accounts that are poorly quantified. We use an ocean biogeochemistry model to assess the importance of the coastal nutrient supply to global ocean biogeochemistry. The model includes full cycles of P, Si, and Fe, as well as the representation...

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Published in:Global Biogeochemical Cycles
Main Authors: Giraud, Xavier, Le Quèrè, Corinne, da Cunha, Leticia C.
Format: Article in Journal/Newspaper
Language:unknown
Published: American Geophysical Union 2008
Subjects:
Online Access:http://nora.nerc.ac.uk/id/eprint/11477/
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spelling ftnerc:oai:nora.nerc.ac.uk:11477 2023-05-15T15:06:14+02:00 Importance of coastal nutrient supply for global ocean biogeochemistry Giraud, Xavier Le Quèrè, Corinne da Cunha, Leticia C. 2008 http://nora.nerc.ac.uk/id/eprint/11477/ unknown American Geophysical Union Giraud, Xavier; Le Quèrè, Corinne; da Cunha, Leticia C. 2008 Importance of coastal nutrient supply for global ocean biogeochemistry. Global Biogeochemical Cycles, 22 (2), GB2025. 15, pp. https://doi.org/10.1029/2006GB002717 <https://doi.org/10.1029/2006GB002717> Marine Sciences Publication - Article PeerReviewed 2008 ftnerc https://doi.org/10.1029/2006GB002717 2023-02-04T19:27:21Z The coastal ocean provides nutrients to the open ocean in accounts that are poorly quantified. We use an ocean biogeochemistry model to assess the importance of the coastal nutrient supply to global ocean biogeochemistry. The model includes full cycles of P, Si, and Fe, as well as the representation of two phytoplankton groups, two zooplankton groups, and two organic detritus pools. When coastal mixing is enhanced to reproduce the action of tides and storms, primary production and chlorophyll-a (Chla) concentrations show a large increase at the coast and a smaller increase in the open ocean. When coastal nutrient supply is enhanced to reproduce sediment resuspension or river supply, both the coastal ocean and the open ocean primary production and Chla concentration increase in comparable amounts. In agreement with the definition of nutrient limitation areas in the model, coastal export of P-excess impacts mainly the subtropical oligotrophic areas, Si-excess impacts the Arctic Ocean and some coastal areas, and Fe-excess impacts the east equatorial Pacific, North Atlantic and North Pacific, and the Southern Ocean. Modeled Chla is closest to observations when the input ratio of Fe to P and Si is enhanced. Article in Journal/Newspaper Arctic Arctic Ocean North Atlantic Phytoplankton Southern Ocean Zooplankton Natural Environment Research Council: NERC Open Research Archive Arctic Arctic Ocean Pacific Southern Ocean Global Biogeochemical Cycles 22 2 n/a n/a
institution Open Polar
collection Natural Environment Research Council: NERC Open Research Archive
op_collection_id ftnerc
language unknown
topic Marine Sciences
spellingShingle Marine Sciences
Giraud, Xavier
Le Quèrè, Corinne
da Cunha, Leticia C.
Importance of coastal nutrient supply for global ocean biogeochemistry
topic_facet Marine Sciences
description The coastal ocean provides nutrients to the open ocean in accounts that are poorly quantified. We use an ocean biogeochemistry model to assess the importance of the coastal nutrient supply to global ocean biogeochemistry. The model includes full cycles of P, Si, and Fe, as well as the representation of two phytoplankton groups, two zooplankton groups, and two organic detritus pools. When coastal mixing is enhanced to reproduce the action of tides and storms, primary production and chlorophyll-a (Chla) concentrations show a large increase at the coast and a smaller increase in the open ocean. When coastal nutrient supply is enhanced to reproduce sediment resuspension or river supply, both the coastal ocean and the open ocean primary production and Chla concentration increase in comparable amounts. In agreement with the definition of nutrient limitation areas in the model, coastal export of P-excess impacts mainly the subtropical oligotrophic areas, Si-excess impacts the Arctic Ocean and some coastal areas, and Fe-excess impacts the east equatorial Pacific, North Atlantic and North Pacific, and the Southern Ocean. Modeled Chla is closest to observations when the input ratio of Fe to P and Si is enhanced.
format Article in Journal/Newspaper
author Giraud, Xavier
Le Quèrè, Corinne
da Cunha, Leticia C.
author_facet Giraud, Xavier
Le Quèrè, Corinne
da Cunha, Leticia C.
author_sort Giraud, Xavier
title Importance of coastal nutrient supply for global ocean biogeochemistry
title_short Importance of coastal nutrient supply for global ocean biogeochemistry
title_full Importance of coastal nutrient supply for global ocean biogeochemistry
title_fullStr Importance of coastal nutrient supply for global ocean biogeochemistry
title_full_unstemmed Importance of coastal nutrient supply for global ocean biogeochemistry
title_sort importance of coastal nutrient supply for global ocean biogeochemistry
publisher American Geophysical Union
publishDate 2008
url http://nora.nerc.ac.uk/id/eprint/11477/
geographic Arctic
Arctic Ocean
Pacific
Southern Ocean
geographic_facet Arctic
Arctic Ocean
Pacific
Southern Ocean
genre Arctic
Arctic Ocean
North Atlantic
Phytoplankton
Southern Ocean
Zooplankton
genre_facet Arctic
Arctic Ocean
North Atlantic
Phytoplankton
Southern Ocean
Zooplankton
op_relation Giraud, Xavier; Le Quèrè, Corinne; da Cunha, Leticia C. 2008 Importance of coastal nutrient supply for global ocean biogeochemistry. Global Biogeochemical Cycles, 22 (2), GB2025. 15, pp. https://doi.org/10.1029/2006GB002717 <https://doi.org/10.1029/2006GB002717>
op_doi https://doi.org/10.1029/2006GB002717
container_title Global Biogeochemical Cycles
container_volume 22
container_issue 2
container_start_page n/a
op_container_end_page n/a
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