Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, Mexico

ABSTRACT. The seasonal variability of gelatinous zooplankton (siphonophores, medusae, and thaliaceans) abundance was investigated at Cabo Pulmo National Park (CPNP) from weekly zooplankton samples collected throughout 2014. The Gulf of California had prolonged warming during 2009-2019, with 2014 as...

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Autores principales:	Silveyra-Bustamante,Angel Antonio, Gómez-Gutiérrez,Jaime, González-Rodríguez,Eduardo, Sánchez,Carlos, Schiariti,Agustín, Mendoza-Becerril,María A.
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2020
Materias:	gelatinous zooplankton seasonal succession species assemblages tropical assemblage warm conditions Gulf of California
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000500779
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spelling	oai:scielo:S0718-560X20200005007792020-11-18Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, MexicoSilveyra-Bustamante,Angel AntonioGómez-Gutiérrez,JaimeGonzález-Rodríguez,EduardoSánchez,CarlosSchiariti,AgustínMendoza-Becerril,María A. gelatinous zooplankton seasonal succession species assemblages tropical assemblage warm conditions Gulf of California ABSTRACT. The seasonal variability of gelatinous zooplankton (siphonophores, medusae, and thaliaceans) abundance was investigated at Cabo Pulmo National Park (CPNP) from weekly zooplankton samples collected throughout 2014. The Gulf of California had prolonged warming during 2009-2019, with 2014 as the anomalously warm year preceding El Niño 2015-2016 compared to the 2003-2020 SST time series. Gelatinous zooplankton accounted <1% of the entire zooplankton community abundance at CPNP during 2014, suggesting a low influence of predation pressure upon their zooplanktonic and micronekton preys. Siphonophores (57%), thaliaceans (42%), and medusae (1%) were present throughout the year. The abundance of gelatinous zooplankton had a significant negative association with sea surface temperature and a positive association with sea surface chlorophyll-a concentration and velocity and direction of the wind, increasing their abundance during October after the hurricane season. The gelatinous zooplankton species assemblage at the coastal CPNP was similar but less abundant than the gelatinous zooplankton species assemblage observed in the oceanic region of the southern Gulf of California during summer 2014. Tropical species Diphyes dispar, Abylopsis tetragona, Chelophyes contorta, and Thalia spp. numerically dominated the gelatinous zooplankton community associated with a regional heatwave period recorded during 2014. A high proportion of tropical zooplankton indicates that mesotrophic conditions sustain the current high biomass and diversity of nektonic and benthonic planktophagous fauna inhabiting CPNP. However, prolonged warming events might decrease zooplankton biomass in the southern region of the Gulf of California in the future.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.48 n.5 20202020-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000500779en10.3856/vol48-issue5-fulltext-2441
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	gelatinous zooplankton seasonal succession species assemblages tropical assemblage warm conditions Gulf of California
spellingShingle	gelatinous zooplankton seasonal succession species assemblages tropical assemblage warm conditions Gulf of California Silveyra-Bustamante,Angel Antonio Gómez-Gutiérrez,Jaime González-Rodríguez,Eduardo Sánchez,Carlos Schiariti,Agustín Mendoza-Becerril,María A. Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, Mexico
description	ABSTRACT. The seasonal variability of gelatinous zooplankton (siphonophores, medusae, and thaliaceans) abundance was investigated at Cabo Pulmo National Park (CPNP) from weekly zooplankton samples collected throughout 2014. The Gulf of California had prolonged warming during 2009-2019, with 2014 as the anomalously warm year preceding El Niño 2015-2016 compared to the 2003-2020 SST time series. Gelatinous zooplankton accounted <1% of the entire zooplankton community abundance at CPNP during 2014, suggesting a low influence of predation pressure upon their zooplanktonic and micronekton preys. Siphonophores (57%), thaliaceans (42%), and medusae (1%) were present throughout the year. The abundance of gelatinous zooplankton had a significant negative association with sea surface temperature and a positive association with sea surface chlorophyll-a concentration and velocity and direction of the wind, increasing their abundance during October after the hurricane season. The gelatinous zooplankton species assemblage at the coastal CPNP was similar but less abundant than the gelatinous zooplankton species assemblage observed in the oceanic region of the southern Gulf of California during summer 2014. Tropical species Diphyes dispar, Abylopsis tetragona, Chelophyes contorta, and Thalia spp. numerically dominated the gelatinous zooplankton community associated with a regional heatwave period recorded during 2014. A high proportion of tropical zooplankton indicates that mesotrophic conditions sustain the current high biomass and diversity of nektonic and benthonic planktophagous fauna inhabiting CPNP. However, prolonged warming events might decrease zooplankton biomass in the southern region of the Gulf of California in the future.
author	Silveyra-Bustamante,Angel Antonio Gómez-Gutiérrez,Jaime González-Rodríguez,Eduardo Sánchez,Carlos Schiariti,Agustín Mendoza-Becerril,María A.
author_facet	Silveyra-Bustamante,Angel Antonio Gómez-Gutiérrez,Jaime González-Rodríguez,Eduardo Sánchez,Carlos Schiariti,Agustín Mendoza-Becerril,María A.
author_sort	Silveyra-Bustamante,Angel Antonio
title	Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, Mexico
title_short	Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, Mexico
title_full	Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, Mexico
title_fullStr	Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, Mexico
title_full_unstemmed	Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, Mexico
title_sort	seasonal variability of gelatinous zooplankton during an anomalously warm year at cabo pulmo national park, mexico
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000500779
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_version_	1714205242680147968

Seasonal variability of gelatinous zooplankton during an anomalously warm year at Cabo Pulmo National Park, Mexico

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