Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.

Large scale patterns in planktonic food web structure were studied by applying continuous size-scaled models of biomass and δ15N to plankton samples, collected at 145 stations during the Malaspina-2010 Expedition across three ocean basins and including major biomes. Carbon biomass and δ15N were dete...

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Autores: Mompeán-de-la-Rosa, María del Carmen, Bode, Antonio, Latasa, Mikel, Fernández-Castro, Bieito, Mouriño-Carballido, Beatriz, Irigoien, Xabier
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/316467
Acceso en línea:http://hdl.handle.net/10261/316467
Access Level:acceso abierto
Palabra clave:plankton
Centro Oceanográfico de A Coruña
Medio Marino
stable isotopes
biomass
size-spectra
Ocean
Food web
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spelling Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.Mompeán-de-la-Rosa, María del CarmenBode, AntonioLatasa, MikelFernández-Castro, BieitoMouriño-Carballido, BeatrizIrigoien, XabierplanktonCentro Oceanográfico de A CoruñaMedio Marinostable isotopesbiomasssize-spectraOceanFood webLarge scale patterns in planktonic food web structure were studied by applying continuous size-scaled models of biomass and δ15N to plankton samples, collected at 145 stations during the Malaspina-2010 Expedition across three ocean basins and including major biomes. Carbon biomass and δ15N were determined in size-fractionated samples (40 to 5000 μm) collected by vertical hauls (0-200 m). Biomass-normalized size-spectra were constructed to summarize food web structure and spatial patterns in spectral parameters were analyzed using geographically-weighted regression analysis. Except in the northwestern Atlantic, size-spectra showed low variability, reflecting a large homogeneity in nitrogen sources and food web structure for the central oceans. Estimated predator-to-prey mass ratios <104 and mean trophic transfer efficiency values between 16% (coastal biome) and >20% (Trades and Westerlies biomes) suggested that oceanic plankton food webs could support a larger number of trophic levels than current estimates based on high efficiency values. The largest changes in spectral parameters and nitrogen sources were related to inputs of atmospheric nitrogen, either from diazotrophic organisms or dust deposition. These results suggest geographic homogeneity in the net transfer of nitrogen up the food web.CONSOLIDER-INGENIO 2010 (CSD2008-00077) ; EURO-BASIN (FP7-ENV-2010 264933)SI202320232016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/316467reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de A Coruñainfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3164672026-05-22T06:33:51Z
dc.title.none.fl_str_mv Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.
title Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.
spellingShingle Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.
Mompeán-de-la-Rosa, María del Carmen
plankton
Centro Oceanográfico de A Coruña
Medio Marino
stable isotopes
biomass
size-spectra
Ocean
Food web
title_short Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.
title_full Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.
title_fullStr Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.
title_full_unstemmed Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.
title_sort Nitrogen inputs influence on biomass and trophic structure of ocean plankton: a study using biomass and stable isotope size-spectra.
dc.creator.none.fl_str_mv Mompeán-de-la-Rosa, María del Carmen
Bode, Antonio
Latasa, Mikel
Fernández-Castro, Bieito
Mouriño-Carballido, Beatriz
Irigoien, Xabier
author Mompeán-de-la-Rosa, María del Carmen
author_facet Mompeán-de-la-Rosa, María del Carmen
Bode, Antonio
Latasa, Mikel
Fernández-Castro, Bieito
Mouriño-Carballido, Beatriz
Irigoien, Xabier
author_role author
author2 Bode, Antonio
Latasa, Mikel
Fernández-Castro, Bieito
Mouriño-Carballido, Beatriz
Irigoien, Xabier
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv plankton
Centro Oceanográfico de A Coruña
Medio Marino
stable isotopes
biomass
size-spectra
Ocean
Food web
topic plankton
Centro Oceanográfico de A Coruña
Medio Marino
stable isotopes
biomass
size-spectra
Ocean
Food web
description Large scale patterns in planktonic food web structure were studied by applying continuous size-scaled models of biomass and δ15N to plankton samples, collected at 145 stations during the Malaspina-2010 Expedition across three ocean basins and including major biomes. Carbon biomass and δ15N were determined in size-fractionated samples (40 to 5000 μm) collected by vertical hauls (0-200 m). Biomass-normalized size-spectra were constructed to summarize food web structure and spatial patterns in spectral parameters were analyzed using geographically-weighted regression analysis. Except in the northwestern Atlantic, size-spectra showed low variability, reflecting a large homogeneity in nitrogen sources and food web structure for the central oceans. Estimated predator-to-prey mass ratios <104 and mean trophic transfer efficiency values between 16% (coastal biome) and >20% (Trades and Westerlies biomes) suggested that oceanic plankton food webs could support a larger number of trophic levels than current estimates based on high efficiency values. The largest changes in spectral parameters and nitrogen sources were related to inputs of atmospheric nitrogen, either from diazotrophic organisms or dust deposition. These results suggest geographic homogeneity in the net transfer of nitrogen up the food web.
publishDate 2016
dc.date.none.fl_str_mv 2016
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/316467
url http://hdl.handle.net/10261/316467
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de A Coruña
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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