Numerical model of the circulation induced by the wind at Bahia de Los Angeles, B.C., Mexico

Amador-Buenrostro, Alberto; Serrano-Guzmán, Saúl J.; Argote-Espinoza, M.A.

doi:10.7773/cm.v17i3.822

Cited by 5 publications

(8 citation statements)

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“…Las islas proveen protección de los vientos del este, pero cuando son muy intensos pueden crear olas altas que pasan a través de los canales entre islas (Barnard y Grady 1968). El clima de BLA es árido y extremo, con vientos variables que inducen una circulación superficial de hasta 25 cm s -1 , más fuerte que la causada por corrientes de marea (Amador-Buenrostro et al 1991). Los escasos registros de temperatura superficial del mar (TSM) indican la mínima (15-17 ºC) en febrero y la máxima (28.5-29.8 ºC) en agosto o septiembre (Barnard y Grady 1968, Blanco-Betancourt et al 2004.…”

Section: áRea De Estudiounclassified

“…La dominancia de la especie templada-subtropical A. clausi durante primavera concuerda con la circulación modelada para BLA cuando dominan los viento del noroeste (Amador-Buenrostro et al 1991). Según este modelo el agua circula de norte a sur entrando desde el norte ( fig.…”

Section: Composition and Abundance Of Cladoceransunclassified

“…Por otro lado, la estructura del zooplancton durante octubre de 2003 fue diferente en las estaciones ajenas al sitio donde se observaron dos tiburones distribution of zooplankton in BLA. It is important to note that the southwestern part of Punta Arena has been described as a recirculation zone (Amador-Buenrostro et al 1991) and this could explain the retention of a high concentration of A. clausi in this place, whereas in October 2003, poecilostomatoid copepods dominated at the other sites exposed to water mixing. On the other hand, the foraging activity of whale sharks plays a role in the changes in zooplankton community structure.…”

Section: Copépodos Como Alimento Del Tiburón Ballenamentioning

confidence: 99%

“…The climate in BLA is arid and extreme. Variable winds induce a sea surface circulation of up to 25 cm s -1 , stronger than that caused by tidal currents (Amador-Buenrostro et al 1991). The few sea surface temperature (SST) recordings indicate a minimum (15-17 ºC) in February and a maximum (28.5-29.8 ºC) in August or September (Barnard andGrady 1968, Blanco-Betancourt et al 2004).…”

Section: Study Areamentioning

confidence: 99%

“…According to Amador-Buenrostro et al (1991), surface circulation in BLA reverses in summer due to easterly winds. This would have induced a change in species composition with the entry from the south of tropical species (Centropages furcatus Subeucalanus subcrassus, Acrocalanus longicornis, and Temora discaudata), which increased in abundance in autumn and more tropical species appeared (Subeucalanus subtenuis, Canthocalanus pauper, and Undinula vulgaris), suggesting a similar circulation in summer and autumn.…”

Section: Estructura De La Comunidad De Copépodosmentioning

confidence: 99%

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Seasonal variability of copepods and cladocerans in Bahía de los Ángeles (Gulf of California) and importance of Acartia clausi as food for whale sharks

Lavaniegos

Heckel

2011

Cienc. Mar.

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ABSTRACT. Bahía de los Ángeles is located on the Baja Californian coast of the Gulf of California, adjacent to Ballenas Channel. The bay receives a dynamic tidal influence from the channel but is protected by numerous islands. It is a highly productive bay that harbors a high diversity of species, some of them protected such as the whale shark (Rhincodon typus). This study describes the seasonal variability of major zooplankton taxa and copepod and cladoceran species between , 99.5% copepods) came from a sample collected south of Punta Arena, where two whale sharks were observed foraging. The shift in species composition during summer coincides with the predominance of easterly winds described in the literature inducing a reversed circulation and a probable transport of tropical species into the bay during summer and autumn (Centropages furcatus, Subeucalanus subcrassus, Acrocalanus longicornis, Temora discaudata, and Corycaeus amazonicus).Key words: zooplankton, copepods, cladocerans, Acartia clausi, Rhincodon typus. RESUMEN. Bahía de los Ángeles se localiza en la costa baja californiana del golfo de California, adyacente al Canal de Ballenas. La bahía recibe de éste una influencia dinámica de la marea y al mismo tiempo está protegida por numerosas islas. Es una bahía muy productiva y alberga una alta diversidad de especies, algunas de ellas protegidas como el tiburón ballena (Rhincodon typus). Este estudio describe la variación estacional de los grandes taxones de zooplancton y especies de copépodos y cladóceros entre mayo de 2003 y octubre de 2004. Los copépodos fueron dominantes durante el invierno y la primavera (83-99% de la abundancia del zooplancton), y experimentaron un dramático descenso en el otoño de 2003 (37-66%) y el verano de 2004 (25-45%). Los cladóceros fueron el segundo grupo más abundante, representado por Pseudevadne tergestina y Penilia avirostris. La primera especie se presentó todo el año con abundancia baja en invierno, mientras que la segunda se presentó sólo en verano y otoño. Otros taxones del holozooplancton contribuyeron con menos del 15% de la abundancia en la mayoría de las muestras, mientras que el merozooplancton con menos del 8%. No obstante, tanto en octubre de 2003 como de 2004 hubo una abundancia notable de equinodermos y otras larvas que contrasta con su escasez en otras temporadas. En el invierno de 2004 dominaron especies de copépodos templado-subtropicales como Calanus pacificus y Acartia tonsa. La alta abundancia de copépodos durante la primavera obedeció a Acartia clausi (mediana = 28,034 ind m -3 ). Sin embargo, la abundancia máxima de zooplancton (40,468 ind m -3 , 99.5% copépodos) provino de una muestra recolectada al sur de punta Arena, donde se avistaron dos tiburones ballena alimentándose. El cambio en composición de especies durante el verano coincidió con la predominancia de los vientos del este, descritos en la literatura, que inducen una reversión en la circulación y un probable acarreo de especies tropicales (Centropages furcatus, Subeucalanus subcr...

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Section: áRea De Estudiounclassified

Section: Composition and Abundance Of Cladoceransunclassified

Section: Copépodos Como Alimento Del Tiburón Ballenamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Estructura De La Comunidad De Copépodosmentioning

confidence: 99%

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Seasonal variability of copepods and cladocerans in Bahía de los Ángeles (Gulf of California) and importance of Acartia clausi as food for whale sharks

Lavaniegos

Heckel

2011

Cienc. Mar.

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Persistent Organic Pollutants in Whale Shark (Rhincodon typus) Skin Biopsies from Bahía de Los Ángeles, Mexico

Villagómez-Vélez,

Noreña-Barroso,

Galván-Magaña

et al. 2023

Bull Environ Contam Toxicol

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The whale shark (Rhincodon typus) is a filter-feeding organism that can be considered a sentinel species, and Bahía de los Ángeles (BLA) in the Gulf of California is an important sighting site for these elasmobranchs. This filter-feeding organism can be considered a pollutant sampler from the marine environment. Persistent organic pollutants are toxic compounds with high mobility and environmental persistence, bioaccumulation and trophic transfer. Among these are polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs). The present work aimed to determine concentrations of PAHs and OCPs in whale shark skin biopsies, collected in 2021 at BLA. Mean detected levels of PAHs and OCPs were 279.4 ng/g dw (dry weight) and 1478.1 ng/g dw, respectively. Analysis of similarities between the ordered sizes (4.2–7.6 m) and the concentrations of PAHs and OCPs indicated no significant differences. Individual PAHs detected indicate pyrogenic and petrogenic sources; the presence of pesticides at levels higher than those of hydrocarbons may be related to agricultural activity in the areas surrounding the Baja California peninsula. This study is the first report of PAH levels in R. typus for the Gulf of California and Mexico.

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Influence of the advection of water masses in the Ballenas Channel on the CO2 system in Bahía de los Angeles (Mexico)

Martínez-Fuentes

Norzagaray-López

Hernandez-Ayon

et al. 2022

Regional Studies in Marine Science

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Numerical model of the circulation induced by the wind at Bahia de Los Angeles, B.C., Mexico

Cited by 5 publications

References 0 publications

Seasonal variability of copepods and cladocerans in Bahía de los Ángeles (Gulf of California) and importance of Acartia clausi as food for whale sharks

Seasonal variability of copepods and cladocerans in Bahía de los Ángeles (Gulf of California) and importance of Acartia clausi as food for whale sharks

Persistent Organic Pollutants in Whale Shark (Rhincodon typus) Skin Biopsies from Bahía de Los Ángeles, Mexico

Influence of the advection of water masses in the Ballenas Channel on the CO2 system in Bahía de los Angeles (Mexico)

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