Modeling the seasonal circulation and connectivity in the North Patagonian Gulfs, Argentina

Tonini, Mariano Hernan; Palma, Elbio Daniel; Pisoni, Juan Pablo

doi:10.1016/j.ecss.2022.107868

Cited by 4 publications

(5 citation statements)

References 31 publications

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“…data). During the austral summer, SJG is subject to strong water exchanges with the San Matías Gulf (with evacuation times of 20 days on average; Tonini et al, 2022), where a high density of adults has been registered (Jerez et al, 2018). This could suggest that some early stages of D. auriga , which breeds from December to March and has a peak in February (Villanueva Gomila et al, 2020), come from the San Matías Gulf.…”

Section: Discussionmentioning

confidence: 99%

Development and Occurrence of Early Stages of Dules auriga in the Northern Patagonian Gulfs of Argentina

Villanueva-Gomila,

Diez,

Venerus

et al. 2023

Ichthyology & Herpetology

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The family Serranidae comprises a large group of marine fishes distributed worldwide. The identification of early stages of serranids at the species level is difficult due to a high family diversity and to overlapping morphological and meristic features. In this study, we describe morphological and meristic features of early stages of Dules auriga and summarize density and distribution data for larvae collected in the San José Gulf, Península Valdés, Argentina. Larvae were distinguished by relevant morphological features that include opercular complex development, meristic features, pigmentation pattern, the sequence of appearance of fin elements, and the structure of the caudal region, typical of serranids. The elongated third dorsal spine, characteristic of adult D. auriga, was not observed. Two preflexion larvae were identified using COI barcoding to confirm the species identity. Morphological features described here helped to discriminate D. auriga from other serranids occurring in the area and enabled reconstruction of the entire developmental series and linkage between early stages and adults.

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Section: Discussionmentioning

confidence: 99%

Development and Occurrence of Early Stages of Dules auriga in the Northern Patagonian Gulfs of Argentina

Villanueva-Gomila,

Diez,

Venerus

et al. 2023

Ichthyology & Herpetology

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“…The GEBCO 2019 portion of the ACS that we used has been corrected, considering bathymetry measurements provided by the Servicio de Hidrografia Naval. This version is currently the most used for regional numerical models in the region [26,53,54].…”

Section: Bathymetry Datamentioning

confidence: 99%

“…TPXO8 represents tides very well in the region [56]. It has also been used to implement regional models [26,54].…”

Section: Tidal Modelmentioning

confidence: 99%

“…The TS values recorded by the SESs in conjunction with SST images show that the front separates fresh and cold waters that enter the SMG in the narrow region between the coast and the front from warm and salty water created in the SMG, north of the front. The water entering the SMG comes from the coastal region east of PV, where a strong upwelling took place [26].…”

Section: Northern Trajectorymentioning

confidence: 99%

“…This gulf, a semi-enclosed coastal basin, is a source of salty and warm water due to the bathymetry and the current dynamics. Cold and relatively fresh shelf waters enter through the southeastern portion of the mouth mainly in winter and spring [26] and re-circulate within the SMG, gaining heat and salinity through solar heating and evaporation, respectively [27]. The warm and salty waters exported through the northern portion of the gulf mouth to the inner shelf are known as High-Salinity Coastal Waters (>34) [20,28,29].…”

Section: Introductionmentioning

confidence: 99%

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Satellite and High-Spatio-Temporal Resolution Data Collected by Southern Elephant Seals Allow an Unprecedented 3D View of the Argentine Continental Shelf

Martinez,

Ruiz-Etcheverry,

Saraceno

et al. 2023

Remote Sensing

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High spatial and temporal resolution hydrographic data collected by Southern Elephant Seals (Mirounga leonina, SESs) and satellite remote sensing data allow a detailed oceanographic description of the Argentine Continental Shelf (ACS). In-situ data were obtained from the CTD (Conductivity, Temperature, and Depth), accelerometer, and hydrophone sensors attached to five SESs that crossed the ACS between the 17th and 31st of October 2019. The analysis of the temperature (T) and salinity (S) along the trajectories allowed us to identify two different regions: north and south of 42°S. Satellite Sea Surface Temperature (SST) data suggests that north of 42°S, warm waters are coming from the San Matias Gulf (SMG). The high spatio-temporal resolution of the in-situ data shows regions with intense gradients along the T and S sections that were associated with a seasonal front that develops north of Península Valdés in winter due to the entrance of cold and fresh water to the SMG. The speed of the SESs is correlated with tidal currents in the coastal portion of the northern region, which is in good agreement with the macrotidal regime observed. A large number of Prey Catch Attempts (PCA), a measure obtained from the accelerometer sensor, indicates that SESs also feed in this region, contradicting suggestions from previous works. The analysis of wind intensity estimated from acoustic sensors allowed us to rule out the local wind as the cause of fast thermocline breakups observed along the SESs trajectories. Finally, we show that the maximum depth reached by the elephant seals can be used to detect errors in the bathymetry charts.

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Jellyfish biodiversity and abundance patterns in northern Patagonia (Valdés Biosphere Reserve, UNESCO 2014)

Nocera

Dutto

D'agostino

et al. 2023

Continental Shelf Research

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Modeling the seasonal circulation and connectivity in the North Patagonian Gulfs, Argentina

Cited by 4 publications

References 31 publications

Development and Occurrence of Early Stages of Dules auriga in the Northern Patagonian Gulfs of Argentina

Development and Occurrence of Early Stages of Dules auriga in the Northern Patagonian Gulfs of Argentina

Satellite and High-Spatio-Temporal Resolution Data Collected by Southern Elephant Seals Allow an Unprecedented 3D View of the Argentine Continental Shelf

Jellyfish biodiversity and abundance patterns in northern Patagonia (Valdés Biosphere Reserve, UNESCO 2014)

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