Modulation of nearshore harmful algal blooms by in situ growth rate and water renewal

Modulation of nearshore harmful algal blooms by in situ growth rate and water renewal

13 pages, 10 figures, 1 table

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Bibliographic Details
Main Authors: Basterretxea, Gotzon, Garcés, Esther, Jordi, Antoni, Anglès, Silvia, Masó, Mercedes
Format: artículo biblioteca
Language:English
Published: Inter Research 2007-12-20
Subjects:Harmful algal bloom, Water renewal, Growth, Model, Mediterranean,
Online Access:http://hdl.handle.net/10261/26810
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spelling dig-icm-es-10261-268102022-10-25T12:22:42Z Modulation of nearshore harmful algal blooms by in situ growth rate and water renewal Basterretxea, Gotzon Garcés, Esther Jordi, Antoni Anglès, Silvia Masó, Mercedes Harmful algal bloom Water renewal Growth Model Mediterranean 13 pages, 10 figures, 1 table Species belonging to the genera Alexandrium and Gymnodinium are amongst the dinoflagellates that regularly cause massive coastal phytoplankton blooms along Mediterranean beaches. These episodes encompass a variety of factors favouring bloom development, including near-shore nutrient enrichment, enhanced growth and low water renewal. During the summer of 2003 the development of a bloom was monitored at 2 nearby beaches, Peguera and Santa Ponça, located at the head of Santa Ponça Bay (Mallorca). Both sites are under the influence of the same physical regime—which is mainly wind-forced—and present relatively high inorganic nutrient concentrations for Mediterranean waters during summer (mean dissolved inorganic nitrogen > 1.2 µM and PO4 > 0.18 µM). Total dinoflagellate abundance exhibited a similar trend at both beaches, with remarkable outbursts in late June (>8 × 106 cells l–1). Water exchange calculations, based on 3D numerical modeling, yielded low average renewal rates at both sites (<0.08 d–1), and cell growth estimations suggested a significant increase in the specific growth rates during the blooming season associated with the seasonal temperature variation. We postulate that both the increased growth rates and the low wind-induced water renewal times are complementary factors and are of key relevance to the modulation of these blooms. Diagnostic analyses using a simple phytoplankton-zooplankton (PZ) model allowed us to observe the effect of growth rate and water renewal on bloom dynamics, and to identify a threshold condition for bloom occurrence This study was partially supported by the EU-financed research projects STRATEGY (EVK·CT 200100046), SEED (GOCE-003875) and THRESHOLDS (IP-003933). E.G. was supported by a Ramon yCajal contract from the Spanish Ministry of Science and Education, and A.J. by a MCYT postdoctoral fellowship Peer reviewed 2010-08-05T08:56:47Z 2010-08-05T08:56:47Z 2007-12-20 artículo http://purl.org/coar/resource_type/c_6501 Marine Ecology Progress Series 352: 53-65 (2007) 0171-8630 http://hdl.handle.net/10261/26810 10.3354/meps07168 en https://doi.org/10.3354/meps07168 open 5867 bytes application/pdf Inter Research
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
topic Harmful algal bloom
Water renewal
Growth
Model
Mediterranean
Harmful algal bloom
Water renewal
Growth
Model
Mediterranean
spellingShingle Harmful algal bloom
Water renewal
Growth
Model
Mediterranean
Harmful algal bloom
Water renewal
Growth
Model
Mediterranean
Basterretxea, Gotzon
Garcés, Esther
Jordi, Antoni
Anglès, Silvia
Masó, Mercedes
Modulation of nearshore harmful algal blooms by in situ growth rate and water renewal
description 13 pages, 10 figures, 1 table
format artículo
topic_facet Harmful algal bloom
Water renewal
Growth
Model
Mediterranean
author Basterretxea, Gotzon
Garcés, Esther
Jordi, Antoni
Anglès, Silvia
Masó, Mercedes
author_facet Basterretxea, Gotzon
Garcés, Esther
Jordi, Antoni
Anglès, Silvia
Masó, Mercedes
author_sort Basterretxea, Gotzon
title Modulation of nearshore harmful algal blooms by in situ growth rate and water renewal
title_short Modulation of nearshore harmful algal blooms by in situ growth rate and water renewal
title_full Modulation of nearshore harmful algal blooms by in situ growth rate and water renewal
title_fullStr Modulation of nearshore harmful algal blooms by in situ growth rate and water renewal
title_full_unstemmed Modulation of nearshore harmful algal blooms by in situ growth rate and water renewal
title_sort modulation of nearshore harmful algal blooms by in situ growth rate and water renewal
publisher Inter Research
publishDate 2007-12-20
url http://hdl.handle.net/10261/26810
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AT garcesesther modulationofnearshoreharmfulalgalbloomsbyinsitugrowthrateandwaterrenewal
AT jordiantoni modulationofnearshoreharmfulalgalbloomsbyinsitugrowthrateandwaterrenewal
AT anglessilvia modulationofnearshoreharmfulalgalbloomsbyinsitugrowthrateandwaterrenewal
AT masomercedes modulationofnearshoreharmfulalgalbloomsbyinsitugrowthrateandwaterrenewal
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