Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring blooms

14 pages, 3 figures, 3 tables

Detalles Bibliográficos
Autores: Lovejoy, Connie, Price, N.M., Legendre, L.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2004
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/135005
Acceso en línea:http://hdl.handle.net/10261/135005
Access Level:acceso abierto
Palabra clave:Nutrient supply
Protist species
Spring-bloom initiation
Succession
Phytoplankton
Marine
Arctic
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spelling Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring bloomsLovejoy, ConniePrice, N.M.Legendre, L.Nutrient supplyProtist speciesSpring-bloom initiationSuccessionPhytoplanktonMarineArctic14 pages, 3 figures, 3 tablesThe species composition of spring blooms varies over open marine regions, displaying both spatial and inter-annual differences. We used semi-continuous cultures to promote species-specific blooms and investigate associated microbial food-web dynamics and inorganic nutrient utilization. Beginning with high-nutrient, low-biomass water from 13 in depth, we compared the changes that took place over 9 d in 2 treatments: (1) NEW, a 'new-nutrient' treatment that simulated horizontal or vertical advection; every 2 d, both particles and dissolved organic matter were removed and ca. 25 % of the volume of the container was replaced with nutrient-rich seawater from 200 m depth. (2) REC, a recycling treatment simulating grazing and sinking losses without nutrient replacement, i.e. conditions mimicking sharply stratified water columns; in this treatment the same volume of water was removed, but was then returned to the container following filtration through a 2.0 μm filter. In the NEW treatment, diatoms consumed the added nutrients and dominated the production and biomass of the protist community. Total protist community production in the REC treatment was significantly lower than in the NEW treatment, with either a late or no diatom bloom and prymnesiophytes such as Phaeocystis spp. attaining higher proportional biomass. Total production rates for heterotrophic protists, bacteria and viruses did not differ significantly between treatments. Nutrient consumption by the ensuing communities differed between the 2 treatments, with a significantly greater proportion of total inorganic nutrients consumed in the NEW than in the REC treatment. The results demonstrate that the character of nutrient supply and loss influences protist community structure and subsequent bulk nutrient utilizationThe Natural Sciences and Research Council of Canada (NSERC) and the Department of Fisheries and Oceans Canada funded the International North Water Polynya Study led by Dr. L. Fortier. NSERC and the fonds of FCAR Québec also provided support to GIROQ (Groupe Interuniversitaire de Recherches Océanographiques du Québec). C.L. was supported by NSERC postgraduate fellowships throughout the studyPeer ReviewedInter ResearchConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2016201620042016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/135005reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3354/ame034079Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1350052026-05-22T06:33:51Z
dc.title.none.fl_str_mv Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring blooms
title Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring blooms
spellingShingle Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring blooms
Lovejoy, Connie
Nutrient supply
Protist species
Spring-bloom initiation
Succession
Phytoplankton
Marine
Arctic
title_short Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring blooms
title_full Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring blooms
title_fullStr Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring blooms
title_full_unstemmed Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring blooms
title_sort Role of nutrient supply and loss in controlling protist species dominance and microbial food-webs during spring blooms
dc.creator.none.fl_str_mv Lovejoy, Connie
Price, N.M.
Legendre, L.
author Lovejoy, Connie
author_facet Lovejoy, Connie
Price, N.M.
Legendre, L.
author_role author
author2 Price, N.M.
Legendre, L.
author2_role author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Nutrient supply
Protist species
Spring-bloom initiation
Succession
Phytoplankton
Marine
Arctic
topic Nutrient supply
Protist species
Spring-bloom initiation
Succession
Phytoplankton
Marine
Arctic
description 14 pages, 3 figures, 3 tables
publishDate 2004
dc.date.none.fl_str_mv 2004
2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/135005
url http://hdl.handle.net/10261/135005
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3354/ame034079
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Inter Research
publisher.none.fl_str_mv Inter Research
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 15.812429

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