Plankton response to El Niño 1997–1998 and La Niña 1999 in the southern region of the California Current

Lavaniegos, Bertha E.; Jiménez-Pérez, L.C.; Gaxiola‐Castro, Gilberto

doi:10.1016/s0079-6611(02)00042-3

Cited by 80 publications

(95 citation statements)

References 24 publications

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“…4D,E). Similarly, the plankton biomass (chl a concentration and zooplankton biomass) off the Baja California Peninsula (32−24°N) was not considerably affected during the 1997−98 El Niño along the west coast of the Baja California peninsula (Lavaniegos et al 2002). Contrary to our results, previous studies in the central Mexican Pacific reported that the variability in the upper layer is mostly dominated by El Niño-induced anticyclonic circulation (La vín et al 2006) and decreasing primary production (Cha vez et al 1999).…”

Section: Changes In the Oceanographic Conditions And Phytoplanktonmentioning

confidence: 94%

Influence of coastal upwelling−downwelling variability on tropical euphausiid abundance and community structure in the inshore Mexican central Pacific

Ambriz-Arreola

Gómez‐Gutiérrez

Franco-Gordo

et al. 2012

Mar. Ecol. Prog. Ser.

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The effect of wind-induced coastal upwellings on tropical euphausiid abundance and community structure was investigated in the Mexican central Pacific (19°N, 105°W) during a monthly time series (1996−1998). Eight species were identified, of which Euphausia distinguenda contributed between 88 and 90% of the total euphausiid abundance, and E. lamelligera con tributed ~7%. The hydrographic structure (< 200 m depth) and euphausiid species composition had strong seasonality patterns associated with the upwelling (February to May) and downwelling (July to November) periods. Redundancy analysis of euphausiid abundance and community structure as a function of the environmental variables revealed that coastal upwelling index, salinity at 10 m depth, and temperature explained most of the euphausiid abundance variability. Stations sampled during intense upwelling periods had the highest abundance of E. distinguenda and E. lamelligera juveniles and adults. Their abundance was strongly and positively correlated with salinity and abundance of nano-and microphytoplankton, but was negatively correlated with surface temperature. Larvae of E. distinguenda and the oceanic species Nematoscelis gracilis (downwelling ensemble) were strongly associated with warm waters of low phytoplankton abundance. The hepato-somatic index (ratio of hepatopancreas length to carapace length) of E. distinguenda and E. lamelligera adults was significantly larger during mixed and semi-mixed than during stratified periods, providing a useful proxy for euphausiid health and trophic condition. Wind-induced upwelling−downwelling are significant coastal processes that influenced seasonal euphausiid abundance and species composition in this tropical ecosystem, while the strong and brief El Niño event of 1997−98 had only a relatively moderate effect in comparison with that observed on euphausiids from transitional (northwest of Mexico) and temperate (Pacific USA) ecosystems.

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Section: Changes In the Oceanographic Conditions And Phytoplanktonmentioning

confidence: 94%

Influence of coastal upwelling−downwelling variability on tropical euphausiid abundance and community structure in the inshore Mexican central Pacific

Ambriz-Arreola

Gómez‐Gutiérrez

Franco-Gordo

et al. 2012

Mar. Ecol. Prog. Ser.

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“…2002, Peterson & Keister 2002) and Baja California (Lavaniegos et al 2002, 2003, Palomares-García et al 2003, Hereu et al 2006), but its influence on the hyperiid community of the Eastern Tropical Pacific remains unstudied.…”

Section: Open Pen Access Ccessmentioning

confidence: 99%

“…During the onset of EN, the biological production and dynamics changed in coastal areas of the CC system and other areas of the Eastern Tropical Pacific (Morales-Ramírez & Brugnoli-Olivera 2001, Lavaniegos et al 2002). Conditions returned to normality in the aftermath.…”

Section: Analysis Of the Hyperiid Communitymentioning

confidence: 99%

Hyperiid amphipod community in the Eastern Tropical Pacific before, during, and after El Niño 1997−1998

Gasca¹,

Franco-Gordo²,

Godínez-Domínguez³

et al. 2012

Mar. Ecol. Prog. Ser.

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“…Frecuentemente, bajo una condición térmica anómala la dinámica de las condiciones físicas y del sistema costero se afectan drásticamente (Kiorbe & Nielsen, 1994;Bakun, 1996), lo cual tiene consecuencias directas sobre la productividad, la variabilidad temporal de la composición y biomasa zooplanctónica, el reclutamiento de larvas y la tasa de mortalidad natural del ictioplancton (e.g. Glynn, 1988;Ebert et al, 1994;Connoly & Roughgarden, 1999;Hopcroft et al, 2002;Lavaniegos et al, 2002).…”

Section: Discussionunclassified

Ictioplancton en la zona costera del Pacifico colombiano durante la fase terminal de El Nino 2006 2007

Martínez-Aguilar¹,

Giraldo²,

Rodríguez-Rubio³

2010

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RESUMEN.Se utilizó una combinación de índices univariados, análisis gráficos y técnicas multivariadas para analizar cualitativa y cuantitativamente la composición taxonómica, estructura comunitaria y patrón de distribución espacial del ictioplancton en la región costera del Pacífico colombiano (zona de influencia de la Corriente de Colombia), considerando simultáneamente el grado de relación con los factores ambientales de temperatura, salinidad y clorofila-a durante la fase terminal del período cálido ENOS 2006-2007. En total se colectaron 543 larvas de peces, pertenecientes a 87 especies de 37 familias, destacándose por su abundancia la familia Myctophidae (26%) y Bregmacerotidae (17%). La variabilidad espacial de la abundancia y de las variables abióticas analizadas sugieren una alta homogeneidad biótica (ictioplancton) y abiótica en la zona de estudio. Sin embargo, al comparar los resultados obtenidos durante esta investigación con trabajos previos, se estableció que El Niño 2006-2007 afectó drásticamente la estructura y abundancia del ictioplancton en la zona costera del Pacífico colombiano, confirmando además que la Corriente Colombia es el principal agente modulador de la distribución espacial de ictioplancton en esta región.Palabras clave: ictioplancton, zona costera tropical, El Niño, corriente de Colombia, Pacífico oriental. Ichthyoplankton from the colombian Pacific coastal zone during the terminal phase of El Niño 2006-2007ABSTRACT. In this research a combination of univariate index, descriptive analysis and multivariate techniques were carried out in order to describe the icthyoplankton taxonomic composition, community structure, spatial pattern of distribution in the coastal region of Colombia Pacific (Influence zone of the Colombian Current), considering simultaneously the grade with the environmental factors temperature, salinity and chlorophyll-a during the terminal phase of ENSO 2006ENSO -2007 fish larvae were collected, belonging to 87 species of 37 families. The most abundant families were Myctophidae (26%) and Bregmacerotidae (17%). The spatial distribution of icthyoplankton and abiotic parameter demonstrate a high biotic and abiotic homogeneity in the study zone. However, the results of this research suggest that El Niño 2006-2007 drastically affect the icthyoplankton structure and abundance in the coastal zone of Colombian Pacific ocean. Furthermore, confirm that the Colombia Current is the main agent for the icthyoplankton distribution in this region.

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Plankton response to El Niño 1997–1998 and La Niña 1999 in the southern region of the California Current

Cited by 80 publications

References 24 publications

Influence of coastal upwelling−downwelling variability on tropical euphausiid abundance and community structure in the inshore Mexican central Pacific

Influence of coastal upwelling−downwelling variability on tropical euphausiid abundance and community structure in the inshore Mexican central Pacific

Hyperiid amphipod community in the Eastern Tropical Pacific before, during, and after El Niño 1997−1998

Ictioplancton en la zona costera del Pacifico colombiano durante la fase terminal de El Nino 2006 2007

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