Distribution and abundance of fish larvae in Bahia De La Paz (Gulf of California) and their relation to hydrographic variability during summer (1997–1998)

Sánchez‐Velásco, Laura; Jiménez-Rosenberg, Sylvia P. A.; Shirasago, Bernardo; Obeso-Nieblas, Maclovio

doi:10.1016/j.dsr2.2004.05.020

Cited by 18 publications

(11 citation statements)

References 4 publications

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“…There are a few published reports on the presence of mesoscale cyclonic eddies in the Bay of La Paz [ Monreal‐Gómez et al ., ; Sánchez‐Velasco et al ., ]. The origin of the eddy has been attributed mainly to the winds in the region [ Monreal‐Gómez et al ., ].…”

Section: Discussionmentioning

confidence: 99%

“…The Bay of La Paz is located in the southeastern portion of the Baja California peninsula (Figure a) and connects with the Gulf of California through two openings: Boca Grande to the northeast and the San Lorenzo Channel in the south (Figure b). There are some previous reports on the presence of a cyclonic eddy in the Alfonso Basin where the bay has a maximum depth of 450 m. These investigations focused on the physical structure of the eddy [ Monreal‐Gómez et al ., ] and the relationship between the eddy and the larval fish assemblage [ Sánchez‐Velasco et al ., ]. In this study, we contribute the relationship between the distribution of nutrients and phytoplankton within this kind of confined cyclonic eddy in the Bay of La Paz.…”

Section: Introductionmentioning

confidence: 99%

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Differential distribution of diatoms and dinoflagellates in a cyclonic eddy confined in the Bay of La Paz, Gulf of California

et al. 2014

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The differential distribution of diatoms and dinoflagellates in the Bay of La Paz, Gulf of California, Mexico, was analyzed in summer of 2009, when a cyclonic eddy confined in the bay dominated the circulation. An uplift of the nutricline in the eddy drove high concentrations of nutrients to the euphotic layer. A differential phytoplankton distribution was observed to be associated with the eddy: there was an abundance of dinoflagellates close to the center of the cyclonic eddy, whereas diatoms were more abundant at the periphery. A significant inverse correlation (R 5 20.62, p < 0.002) was found between the temperature at 25 m depth and the dinoflagellates abundance. Based on the temporal evolution of chlorophyll measured by MODIS satellite images, and a conceptual model proposed for the lifecycle of eddies, the cyclonic eddy may have been an old decaying structure. The effect of the cyclonic eddy on the phytoplankton distribution in this small semienclosed region was apparently similar to that found in larger eddies in the open ocean, but this is the first time such a differential distribution has been found associated to a confined eddy.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Differential distribution of diatoms and dinoflagellates in a cyclonic eddy confined in the Bay of La Paz, Gulf of California

et al. 2014

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“…The Olmstead–Tukey test determined hierarchies of the species in each larval fish habitat (dominant, frequent, constant and rare species) (e.g., [ 11 , 58 ]). This test considered the average relative abundance against the frequency of occurrence of each species [ 52 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of Geostrophic Kinetic Energy on the Distribution of Mesopelagic Fish Larvae in the Southern Gulf of California in Summer/Fall Stratified Seasons

et al. 2016

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Effects of geostrophic kinetic energy flux on the three-dimensional distribution of fish larvae of mesopelagic species (Vinciguerria lucetia, Diogenichthys laternatus, Benthosema panamense and Triphoturus mexicanus) in the southern Gulf of California during summer and fall seasons of stronger stratification were analyzed. The greatest larval abundance was found at sampling stations in geostrophic kinetic energy-poor areas (<7.5 J/m3), where the distribution of the dominant species tended to be stratified. Larvae of V. lucetia (average abundance of 318 larvae/10m2) and B. panamense (174 larvae/10m2) were mostly located in and above the pycnocline (typically ~ 40 m depth). In contrast, larvae of D. laternatus (60 larvae/10m2) were mainly located in and below the pycnocline. On the other hand, in sampling stations from geostrophic kinetic energy-rich areas (> 21 J/m3), where mesoscale eddies were present, the larvae of the dominant species had low abundance and were spread more evenly through the water column, in spite of the water column stratification. For example, in a cyclonic eddy, V. lucetia larvae (34 larvae/10m2) extended their distribution to, at least, the limit of sampling 200 m depth below the pycnocline, while D. laternatus larvae (29 larvae/10m2) were found right up to the surface, both probably as a consequence mixing and secondary circulation in the eddy. Results showed that the level of the geostrophic kinetic energy flux affects the abundance and the three-dimensional distribution of mesopelagic fish larvae during the seasons of stronger stratification, indicating that areas with low geostrophic kinetic energy may be advantageous for feeding and development of mesopelagic fish larvae because of greater water column stability.

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“…The Bay of La Paz (BLPZ), located on the southwestern coast of the Gulf of California (GC) 180 km from the mouth (Fig. 1), is considered the largest bay in the Gulf of California (Sánchez-Velasco et al, 2004b). This region is also characterized by strong seasonal variability, high diversity and abundance of fish species and as a spawning area for many species of great ecological significance (Sánchez-Velasco et al, 2006) with an important presence of marine mammal populations, such as whales and dolphins.…”

Section: Introductionmentioning

confidence: 99%

Sea surface temperature, ocean color and wind forcing patterns in the Bay of La Paz, Gulf of California: Seasonal variability

Cervantes

2019

Atm

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En este estudio se examinan, a partir de imágenes de satélite derivadas del sensor MODIS-Aqua, las climatologías mensuales de la temperatura superficial del mar (TSM), clorofila superficial (Chl-a) y su relación con el rotacional del esfuerzo del viento (Cross-Calibrate Multi-Plataform, CCMP) en la bahía de La Paz, ubicada en el suroeste del Golfo de California, una región con alta productividad biológica e importante variabilidad estacional. El ajuste armónico aplicado a las climatologías mensuales de estas variables indica un mejor ajuste con los constituyentes anual y semianual. La amplitud anual es la señal dominante tanto en la TSM como en la Chl-a y corresponde al ciclo estacional de calentamiento y enfriamiento en toda la bahía, asociado con la afluencia de aguas costeras ricas en nutrientes y el intercambio de agua entre la bahía y el Golfo de California. Un análisis de funciones empíricas ortogonales (FEO) identifica los patrones anual y semianual del ciclo estacional que responden al forzamiento del viento. La FEO

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Distribution and abundance of fish larvae in Bahia De La Paz (Gulf of California) and their relation to hydrographic variability during summer (1997–1998)

Cited by 18 publications

References 4 publications

Differential distribution of diatoms and dinoflagellates in a cyclonic eddy confined in the Bay of La Paz, Gulf of California

Differential distribution of diatoms and dinoflagellates in a cyclonic eddy confined in the Bay of La Paz, Gulf of California

Effects of Geostrophic Kinetic Energy on the Distribution of Mesopelagic Fish Larvae in the Southern Gulf of California in Summer/Fall Stratified Seasons

Sea surface temperature, ocean color and wind forcing patterns in the Bay of La Paz, Gulf of California: Seasonal variability

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