Brazilian sardine (Sardinella brasiliensis) spawning in the southeast Brazilian Bight over the period 1976-1993

Matsuura, Yasunobu

doi:10.1590/s1413-77391998000100003

Cited by 46 publications

(33 citation statements)

References 8 publications

(6 reference statements)

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“…The Southern Brazilian Continental Shelf (SBCS) is known as one of the more productive areas for fisheries in Brazilian waters [ Haimovici , ]. Many authors reported a strong relationship between the SBCS environmental variability and the Brazilian sardine ( Sardinella brasiliensis ) biological cycle and fisheries [ Matsuura , ; Sunyé and Servain , ; Cergole et al ., ; Legey and Jablonski , ; Gigliotti et al ., ; Soares et al ., ; Dias et al ., ; D'agostini et al ., ].…”

Section: Introductionmentioning

confidence: 99%

“…Matsuura [] was one of the first authors to study the relationship between sardine fisheries and water masses in the SBCS. Their study described that the absence or the weakness of the South Atlantic Central Water (SACW) intrusions from the shelf break into the continental shelf is a very important factor controlling the Brazilian sardine recruitment and catches.…”

Section: Introductionmentioning

confidence: 99%

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Regional modeling of the water masses and circulation annual variability at the Southern Brazilian Continental Shelf

Mendonça

Souza

Aseff

et al. 2017

J. Geophys. Res. Oceans

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The Southern Brazilian Continental Shelf (SBCS) is one of the more productive areas for fisheries in Brazilian waters. The water masses and the dynamical processes of the region present a very seasonal behavior that imprint strong effects in the ecosystem and the weather of the area and its vicinity. This paper makes use of the Regional Ocean Modeling System (ROMS) for studying the water mass distribution and circulation variability in the SBCS during the year of 2012. Model outputs were compared to in situ, historical observations and to satellite data. The model was able to reproduce the main thermohaline characteristics of the waters dominating the SBCS and the adjacent region. The mixing between the Subantarctic Shelf Water and the Subtropical Shelf Water, known as the Subtropical Shelf Front (STSF), presented a clear seasonal change in volume. As a consequence of the mixing and of the seasonal oscillation of the STSF position, the stability of the water column inside the SBCS also changes seasonally. Current velocities and associated transports estimated for the Brazil Current (BC) and for the Brazilian Coastal Current (BCC) agree with previous measurements and estimates, stressing the fact that the opposite flow of the BCC occurring during winter in the study region is about 2 orders of magnitude smaller than that of the BC. Seasonal maps of simulated Mean Kinetic Energy and Eddy Kinetic Energy demonstrate the known behavior of the BC and stressed the importance of the mean coastal flow off Argentina throughout the year.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Regional modeling of the water masses and circulation annual variability at the Southern Brazilian Continental Shelf

Mendonça

Souza

Aseff

et al. 2017

J. Geophys. Res. Oceans

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“…Though upwelling around CF has been reported in winter [ Moser and Gianesella‐Galvão , ], the more frequent and intense events are observed in summer and spring. The later events can influence the position of the Brazilian sardine spawning areas [ Matsuura , ] and the algal distribution [ Guimaraens and Coutinho , ].…”

Section: Introductionmentioning

confidence: 99%

Seasonal variability and coastal upwelling near Cape Santa Marta (Brazil)

et al. 2013

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[1] The Santa Marta Grande Cape (CSM) area, a relatively steep and narrow continental shelf off southeast Brazil, is under the influence of the Brazil Current and intense seasonal variations of the wind field that affect the composition of water masses and their circulation. Hydrographic data, satellite-derived wind stress, and numerical simulations are used to characterize the seasonal and shorter period variability of the oceanographic conditions off CSM, in the area between 27 S and 30 S. The study is focused on the upwelling episodes and the dynamical mechanisms associated with these events. Field data and numerical results indicate significant seasonal changes in the oceanographic structure, the water mass composition, and the dynamical balance. During fall and winter, when southwesterly winds prevail and the frequency of meteorological frontal systems increases, the region is characterized by waters of continental origin, the Plata Plume Water (PPW). During spring and summer, deeper waters reach the surface layer due to the action of northeasterly winds. Coastal upwelling events are revealed by surface temperature minima observed south of CSM. Synoptic data show that these events occur in pulses associated with changes in the wind direction. Analysis of the numerical results shows that this particular location of the upwelling band results from the synergy between shelf-break upwelling and the regional shelf circulation induced by the northeasterly winds, both of which are modulated by changes in the coastline orientation and shelf width.

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“…It was only after 1977 that studies started to look at the reproductive strategy of the S. brasiliensis , including the spatial distribution of eggs and larval development (Isaac‐Nahum et al , 1988; Saccardo & Rossi‐Wongtschowski, 1991). The only comprehensive study of their distribution and egg production in the SBB was reported by Matsuura (1998) based on systematic samplings during nine spawning seasons between 1976 and 1993. He found high interannual variation in the estimated number of eggs, ranging from 99 to 4669 × 10 12 eggs, mostly concentrated in the southern portion of the SBB.…”

Section: Introductionmentioning

confidence: 99%

Spatial analysis of egg distribution and geographic changes in the spawning habitat of the Brazilian sardine Sardinella brasiliensis

Gigliotti

Gherardi

Páes

et al. 2010

Journal of Fish Biology

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This paper establishes the spawning habitat of the Brazilian sardine Sardinella brasiliensis and investigates the spatial variability of egg density and its relation with oceanographic conditions in the shelf of the south-east Brazil Bight (SBB). The spawning habitats of S. brasiliensis have been defined in terms of spatial models of egg density, temperature-salinity plots, quotient (Q) analysis and remote sensing data. Quotient curves (Q(C)) were constructed using the geographic distribution of egg density, temperature and salinity from samples collected during nine survey cruises between 1976 and 1993. The interannual sea surface temperature (SST) variability was determined using principal component analysis on the SST anomalies (SSTA) estimated from remote sensing data over the period between 1985 and 2007. The spatial pattern of egg occurrences in the SBB indicated that the largest concentration occurred between Paranaguá and São Sebastião. Spawning habitat expanded and contracted during the years, fluctuating around Paranaguá. In January 1978 and January 1993, eggs were found nearly everywhere along the inner shelf of the SBB, while in January 1988 and 1991 spawning had contracted to their southernmost position. The SSTA maps for the spawning periods showed that in the case of habitat expansion (1993 only) anomalies over the SBB were zero or slightly negative, whereas for the contraction period anomalies were all positive. Sardinella brasiliensis is capable of exploring suitable spawning sites provided by the entrainment of the colder and less-saline South Atlantic Central Water onto the shelf by means of both coastal wind-driven (to the north-east of the SBB) and meander-induced (to the south-west of the SBB) upwelling.

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Brazilian sardine (Sardinella brasiliensis) spawning in the southeast Brazilian Bight over the period 1976-1993

Cited by 46 publications

References 8 publications

Regional modeling of the water masses and circulation annual variability at the Southern Brazilian Continental Shelf

Regional modeling of the water masses and circulation annual variability at the Southern Brazilian Continental Shelf

Seasonal variability and coastal upwelling near Cape Santa Marta (Brazil)

Spatial analysis of egg distribution and geographic changes in the spawning habitat of the Brazilian sardine Sardinella brasiliensis

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