Physical, chemical and zooplankton biomass variability (inshore-offshore) of Mexican Central Pacific during El Niño-La Niña 2010

The response of zooplankton, phytoplankton biomass (Chl-a concentration) and nutrients to the oceanographic variability in the Mexican Central Pacific was studied over three oceanographic surveys realized in 2010 (January, May and October). The highest zooplankton biomass (48 mL 1000 m-3) was regist...

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Autores principales:	Pelayo-Martínez,Gloria, Olivos-Ortiz,Aramis, Franco-Gordo,Carmen, Quijano-Scheggia,Sonia, Gaviño-Rodríguez,Juan, Kono-Martínez,Tadashi, Castro-Ochoa,Fátima
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2017
Materias:	zooplankton Chl-a nutrients mesoscale El Niño Mexican Central Pacific
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000100007
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spelling	oai:scielo:S0718-560X20170001000072017-04-21Physical, chemical and zooplankton biomass variability (inshore-offshore) of Mexican Central Pacific during El Niño-La Niña 2010Pelayo-Martínez,GloriaOlivos-Ortiz,AramisFranco-Gordo,CarmenQuijano-Scheggia,SoniaGaviño-Rodríguez,JuanKono-Martínez,TadashiCastro-Ochoa,Fátima zooplankton Chl-a nutrients mesoscale El Niño Mexican Central Pacific The response of zooplankton, phytoplankton biomass (Chl-a concentration) and nutrients to the oceanographic variability in the Mexican Central Pacific was studied over three oceanographic surveys realized in 2010 (January, May and October). The highest zooplankton biomass (48 mL 1000 m-3) was registered in May when nitrites, nitrates, phosphates and silicates were also highest and mean Chl-a was 0.67 mg m-3. The lowest zooplankton biomass was registered in October, with a mean value of 25 mL 1000 m-3. Twenty-nine taxonomic groups of zooplankton were recorded, of which copepods contributed 71% of total abundance followed by chaetognaths (6%) and euphausiids (5%). Multivariate BEST test demonstrated that mixed layer depth and temperature at 25 m depth can explain the distribution of major zooplankton groups. The study area was influenced by El Niño conditions, which caused a seasonal shift. Coastal upwelling was evident until late summer, when geostrophic analysis showed a predominant SW component near the Jalisco coast. We suggest a possible top-down control of zooplankton grazing over phytoplankton, and acclimatization of both plankton groups to variability in environmental conditions induced by the transition from warm to cold ENSO phase.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.45 n.1 20172017-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000100007en10.3856/vol45-issue1-fulltext-7
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	zooplankton Chl-a nutrients mesoscale El Niño Mexican Central Pacific
spellingShingle	zooplankton Chl-a nutrients mesoscale El Niño Mexican Central Pacific Pelayo-Martínez,Gloria Olivos-Ortiz,Aramis Franco-Gordo,Carmen Quijano-Scheggia,Sonia Gaviño-Rodríguez,Juan Kono-Martínez,Tadashi Castro-Ochoa,Fátima Physical, chemical and zooplankton biomass variability (inshore-offshore) of Mexican Central Pacific during El Niño-La Niña 2010
description	The response of zooplankton, phytoplankton biomass (Chl-a concentration) and nutrients to the oceanographic variability in the Mexican Central Pacific was studied over three oceanographic surveys realized in 2010 (January, May and October). The highest zooplankton biomass (48 mL 1000 m-3) was registered in May when nitrites, nitrates, phosphates and silicates were also highest and mean Chl-a was 0.67 mg m-3. The lowest zooplankton biomass was registered in October, with a mean value of 25 mL 1000 m-3. Twenty-nine taxonomic groups of zooplankton were recorded, of which copepods contributed 71% of total abundance followed by chaetognaths (6%) and euphausiids (5%). Multivariate BEST test demonstrated that mixed layer depth and temperature at 25 m depth can explain the distribution of major zooplankton groups. The study area was influenced by El Niño conditions, which caused a seasonal shift. Coastal upwelling was evident until late summer, when geostrophic analysis showed a predominant SW component near the Jalisco coast. We suggest a possible top-down control of zooplankton grazing over phytoplankton, and acclimatization of both plankton groups to variability in environmental conditions induced by the transition from warm to cold ENSO phase.
author	Pelayo-Martínez,Gloria Olivos-Ortiz,Aramis Franco-Gordo,Carmen Quijano-Scheggia,Sonia Gaviño-Rodríguez,Juan Kono-Martínez,Tadashi Castro-Ochoa,Fátima
author_facet	Pelayo-Martínez,Gloria Olivos-Ortiz,Aramis Franco-Gordo,Carmen Quijano-Scheggia,Sonia Gaviño-Rodríguez,Juan Kono-Martínez,Tadashi Castro-Ochoa,Fátima
author_sort	Pelayo-Martínez,Gloria
title	Physical, chemical and zooplankton biomass variability (inshore-offshore) of Mexican Central Pacific during El Niño-La Niña 2010
title_short	Physical, chemical and zooplankton biomass variability (inshore-offshore) of Mexican Central Pacific during El Niño-La Niña 2010
title_full	Physical, chemical and zooplankton biomass variability (inshore-offshore) of Mexican Central Pacific during El Niño-La Niña 2010
title_fullStr	Physical, chemical and zooplankton biomass variability (inshore-offshore) of Mexican Central Pacific during El Niño-La Niña 2010
title_full_unstemmed	Physical, chemical and zooplankton biomass variability (inshore-offshore) of Mexican Central Pacific during El Niño-La Niña 2010
title_sort	physical, chemical and zooplankton biomass variability (inshore-offshore) of mexican central pacific during el niño-la niña 2010
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000100007
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_version_	1714205175544020992

Physical, chemical and zooplankton biomass variability (inshore-offshore) of Mexican Central Pacific during El Niño-La Niña 2010

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