| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Resource Competition Affects Plankton Community Structure; Evidence from Trait-Based Modeling
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| Autores: |
Sourisseau, Marc
Le Guennec, Valerie
Le Gland, Guillaume
Plus, Martin
Chapelle, Annie
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| Data: |
2017
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| Ano: |
2017
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| Palavras-chave: |
Droop
Competition
Inter-specific
Estuary
Bay of Brest
Alexandrium minutum
Phenology
Niches
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| Resumo: |
Understanding the phenology of phytoplankton species is still a challenge and despite a lot of theoretical work on competition for ressources this process is under-represented in deterministic models. To study the main driver of the species selection, we thus used a trait-based model that keeps phenotypic variability through physiological trait parameterization. We next validate the results by using a key species, the toxic dinoflagellate Alexandrium minutum. Due to their monitoring, we show that harmful algae are ideal models for studying ecological niches and for contributing to this more global challenge. As a first step, a dimensionless model of an estuary (France) was built with water temperature and water exchanges deduced from a hydro-dynamic model. The biological parametrisation takes into account the size (from pico- to microphytoplankton) and the type of assimilation. The results show that temperature, competition for nutrients and dilution are important factors regulating the community structure and \textit{Alexandrium minutum} dynamics (more especially the bloom initiation and magnitude). These drivers contribute to determine the ecological niche of A. minutum, to influence the shape of its blooms and to provide potential explanations of its interannual variability. This approach mainly introduce more flexibility of the community structure to study how environmental forcing could drive its evolution.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00373/48414/48624.pdf
DOI:10.3389/fmars.2017.00052
https://archimer.ifremer.fr/doc/00373/48414/
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| Editor: |
Frontiers Media SA
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| Formato: |
application/pdf
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| Fonte: |
Frontiers In Marine Science (2296-7745) (Frontiers Media SA), 2017 , Vol. 4 , N. 52 , P. 14p.
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| Direitos: |
2017 Sourisseau, Plus, Chapelle, Le Guennec and Le Gland. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
info:eu-repo/semantics/openAccess
restricted use
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