Influence of continental shelf processes in the water mass balance and productivity from stable isotope data on the Southeastern Brazilian coast

Venancio, Igor Martins; Belem, André L.; Santos, Tárcio Henrique Ribeiro dos; Zucchi, Maria do Rosário; Azevedo, Antônio Expedito Gomes de; Capilla, Ramsés; Albuquerque, Ana Luíza Spadano

doi:10.1016/j.jmarsys.2014.06.009

Cited by 32 publications

(24 citation statements)

References 40 publications

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“…6, Table 2) showed a consistent range from 18.1 to 24.1 C, indicating seasonal events of intense upwelling of the South Atlantic Central Water (SACW) breaking the mean warm surface conditions of the Brazil Current (BC), and are comparable with water temperatures found by Venancio et al (2014) in the same region. The estimated paleotemperature oscillations in both sections (Tarioba A and B) are consistent with the diagenesis zone currently obtained from bone geochemistry.…”

Section: Discussionsupporting

confidence: 54%

“…The region is also strongly influenced by the Brazil Current (BC) (Castelao and Barth, 2006;Franchitto et al, 2008;Castelao, 2012;Belem et al, 2013;Cordeiro et al, 2014;Venancio et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…The analyses of d 18 O were conducted by the Beta Analytic Inc., following the standard protocol. We applied the equation developed by Epstein et al (1951Epstein et al ( , 1953 and by Kennett and Voorhies (1996) the ponderate mean of the d 18 O water data obtained during the last 3 years in the region for waters between depths of 40 and 80 m and ranging from 0.2 to 0.45 ppm following the data for Subtropical Shelf Water for the region of Cabo Frio (Venancio et al, 2014). Using the isotopic range of Subtropical Shelf Water, we assumed a temperature error of 1.1 C.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Fish bone diagenesis in southeastern Brazilian shell mounds and its importance for paleoenvironmental studies

Aguilera

Belem

Angélica

et al. 2016

Quaternary International

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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Fish bone diagenesis in southeastern Brazilian shell mounds and its importance for paleoenvironmental studies

Aguilera

Belem

Angélica

et al. 2016

Quaternary International

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“…Several Table 1 Dates obtained from the set of samples. studies have been performed to understand the mechanisms that promote the upwelling in this region (Cordeiro et al, 2014;Venancio et al, 2014) value of À127 ± 67 14 C yr .…”

Section: Discussionmentioning

confidence: 99%

The Usiminas shellmound on the Cabo Frio Island: Marine reservoir effect in an upwelling region on the coast of Brazil

Macario

Alves

Chanca

et al. 2016

Quaternary Geochronology

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“…The Brazil Current flows from northeast towards the south Brazilian coast (Stramma, Ikeda, & Peterson, ). Three water masses dominate in this area: Subtropical Shelf Water, Tropical Water (TW) and South Atlantic Central Water (SACW) (Venancio et al, ).…”

Section: Introductionmentioning

confidence: 99%

Seasonal variability of ichthyoneuston assemblage on the continental shelf and slope of the Southwest Atlantic Ocean, Brazil (20°–23°S)

et al. 2019

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Many marine organisms spend the early life history stages in neuston domain. Although the importance of ichthyoneuston, few studies were developed in the Southwest Atlantic Ocean. Therefore, this study aimed to improve the knowledge on ichthyoneuston of the Brazilian coast analyzing the vertical stratification and horizontal distribution of these organisms. Neuston samples were collected in daylight between 20°S and 23°S from February to April 2009 (late summer/early autumn; rainy season) and from August to September 2009 (late winter/early spring; dry season). Eggs of six taxa were identified: Anguilliformes, Engraulidae, Clupeidae, Synodontidae, Trichiuridae, and Maurolicus stehmanni (Sternoptychidae). The neustonic larval fish assemblage was composed by 40 families and 63 species. Mullidae and Myctophidae larvae were the most abundant in the rainy period while Mullidae and Mugilidae dominated in the dry season. Seasonal and spatial variation of larval fish assemblages in the neuston were structured by oceanographic features. The larval fish abundance on the outer slope stations may have been favored by the advection of an anticyclone that encompassed most of the study region during the cruise periods. In the rainy season, salinity and local depth structured the larval fish assemblage in a cross‐shelf gradient, while in the dry season the larval assemblage was structured around temperature and north‐south gradient. In the dry season, the cross‐shelf gradient was less pronounced mainly because of the low abundance and frequency of mesopelagic larvae. The low frequency and abundance of some species are probably related to the net avoidance of fish larvae during the day or dial vertical migration, as many species migrate to deeper layers during the day and ascend to neuston only at night. Nevertheless, the present study presented baseline information about the seasonal and spatial variation of the neustonic larval fish assemblage influenced by the oceanographic conditions in the Campos Basin. We recommend to additionally collect night samples to decrease larval escapement rates and to compare night versus day catches to further investigate the influence of daily migration in the neustonic larval fish in the area.

show abstract

Influence of continental shelf processes in the water mass balance and productivity from stable isotope data on the Southeastern Brazilian coast

Cited by 32 publications

References 40 publications

Fish bone diagenesis in southeastern Brazilian shell mounds and its importance for paleoenvironmental studies

Fish bone diagenesis in southeastern Brazilian shell mounds and its importance for paleoenvironmental studies

The Usiminas shellmound on the Cabo Frio Island: Marine reservoir effect in an upwelling region on the coast of Brazil

Seasonal variability of ichthyoneuston assemblage on the continental shelf and slope of the Southwest Atlantic Ocean, Brazil (20°–23°S)

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