The role of mixing in controlling resource availability and phytoplankton community composition

The role of mixing in controlling resource availability and phytoplankton community composition

15 pages, 9 figures, 3 tables

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Main Authors: Villamaña, Marina, Marañón, Emilio, Cermeño, Pedro, Estrada, Marta, Fernández-Castro, B., Figueiras, F. G., Latasa, Mikel, Otero-Ferrer, Jose Luís, Reguera, B., Mouriño-Carballido, Beatriz
Format: artículo biblioteca
Language:English
Published: Elsevier 2019-11
Online Access:http://hdl.handle.net/10261/192311
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spelling dig-icm-es-10261-1923112021-11-01T05:33:00Z The role of mixing in controlling resource availability and phytoplankton community composition Villamaña, Marina Marañón, Emilio Cermeño, Pedro Estrada, Marta Fernández-Castro, B. Figueiras, F. G. Latasa, Mikel Otero-Ferrer, Jose Luís Reguera, B. Mouriño-Carballido, Beatriz 15 pages, 9 figures, 3 tables We investigate the role of mixing, through its effect on nutrient and light availability, as a driver of phytoplankton community composition in the context of Margalef’s mandala. Data on microstructure turbulence, irradiance, new nitrogen supply and phytoplankton composition were collected at 102 stations in three contrasting marine environments: the Galician coastal upwelling system of the northwest Iberian Peninsula, the northwestern Mediterranean, and the tropical and subtropical Atlantic, Pacific and Indian oceans. Photosynthetic pigments concentration and microscopic analysis allowed us to investigate the contribution of diatoms, dinoflagellates, pico- and nanoeukaryotes, and cyanobacteria to the phytoplankton community. Simple linear regression was used to assess the role of environmental factors on community composition, and environmental overlap among different phytoplankton groups was computed using nonparametric kernel density functions. Mixing and new nitrogen supply played an important role in controlling the phytoplankton community structure. At lower values of mixing and new nitrogen supply cyanobacteria dominated, pico- and nanoeukaryotes were dominant across a wide range of environmental conditions, and finally enhanced new nitrogen supply was favourable for diatoms and dinoflagellates. Dinoflagellates were prevalent at intermediate mixing levels, whereas diatoms spread across a wider range of mixing conditions. Occasional instances of enhanced diatom biomass were found under low mixing, associated with the high abundance of Hemiaulus hauckii co-occurring with high N2 fixation in subtropical regions, and with the formation of thin layers in the Galician coastal upwelling. Our results verify the Margalef’s mandala for the whole phytoplankton community, emphasizing the need to consider nutrient supply, rather than nutrient concentration, as an indicator of nutrient availability This research was funded by projects: CHAOS (CTM2012-30680) and REMEDIOS (CTM2016-75451-C2-1-R) to B. Mouriño-Carballido, DISTRAL (CTM2011-25035) to P. Cermeño, REIMAGE (CTM2011-30155-C03-01) to E. Fernández, FAMOSO (CTM2008-06261-C03) to M. Latasa and Malaspina (CSD2008-00077) to C. Duarte from the Spanish Ministry of Economy and Competitiveness. ASIMUTH (FP7 SPACE.2010.1.1-01 #261860) grant to M. Ruiz-Villareal was supported by the 7th Framework Programme of the European Commission. M. Villamaña acknowledges the receipt of a FPU fellowship (FPU014/05385) from the Spanish Ministry of Education, Culture and Sports Peer reviewed 2019-10-08T11:58:24Z 2019-10-08T11:58:24Z 2019-11 artículo http://purl.org/coar/resource_type/c_6501 Progress in Oceanography 178: 102181 (2019) 0079-6611 http://hdl.handle.net/10261/192311 10.1016/j.pocean.2019.102181 en Postprint https://doi.org/10.1016/j.pocean.2019.102181 Sí open Elsevier
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
description 15 pages, 9 figures, 3 tables
format artículo
author Villamaña, Marina
Marañón, Emilio
Cermeño, Pedro
Estrada, Marta
Fernández-Castro, B.
Figueiras, F. G.
Latasa, Mikel
Otero-Ferrer, Jose Luís
Reguera, B.
Mouriño-Carballido, Beatriz
spellingShingle Villamaña, Marina
Marañón, Emilio
Cermeño, Pedro
Estrada, Marta
Fernández-Castro, B.
Figueiras, F. G.
Latasa, Mikel
Otero-Ferrer, Jose Luís
Reguera, B.
Mouriño-Carballido, Beatriz
The role of mixing in controlling resource availability and phytoplankton community composition
author_facet Villamaña, Marina
Marañón, Emilio
Cermeño, Pedro
Estrada, Marta
Fernández-Castro, B.
Figueiras, F. G.
Latasa, Mikel
Otero-Ferrer, Jose Luís
Reguera, B.
Mouriño-Carballido, Beatriz
author_sort Villamaña, Marina
title The role of mixing in controlling resource availability and phytoplankton community composition
title_short The role of mixing in controlling resource availability and phytoplankton community composition
title_full The role of mixing in controlling resource availability and phytoplankton community composition
title_fullStr The role of mixing in controlling resource availability and phytoplankton community composition
title_full_unstemmed The role of mixing in controlling resource availability and phytoplankton community composition
title_sort role of mixing in controlling resource availability and phytoplankton community composition
publisher Elsevier
publishDate 2019-11
url http://hdl.handle.net/10261/192311
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