scholarly journals Allopatric divergence and secondary contact of two weak fish species (Macrodon ancylodon and Macrodon atricauda) from the South Atlantic

2022 ◽  
Vol 245 ◽  
pp. 106126
Author(s):  
Alexandre Falcão Aderne ◽  
Jamille de Araújo Bitencourt ◽  
Luciana Almeida Watanabe ◽  
Horacio Schneider ◽  
Paulo Roberto A. de Mello Affonso ◽  
...  
Keyword(s):  
Fish Species ◽  
South Atlantic ◽  
Secondary Contact ◽  
The South ◽  
Allopatric Divergence

scholarly journals New records of fishes for the Vitória-Trindade Chain, southwestern Atlantic

Check List ◽  
2020 ◽  
Vol 16 (3) ◽  
pp. 699-705
Author(s):  
Helder Coelho Guabiroba ◽  
Caio Ribeiro Pimentel ◽  
Raphael Mariano Macieira ◽  
Gabriel Costa Cardozo-Ferreira ◽  
João Batista Teixeira ◽  
...  
Keyword(s):  
Reef Fish ◽  
Fish Species ◽  
New Records ◽  
Oceanic Islands ◽  
South Atlantic ◽  
Southwestern Atlantic ◽  
The South ◽  
Shallow Reef ◽  
Trindade Island ◽  
Reef Fish Species

Oceanic islands and seamounts play an important role on the origin and maintenance of biodiversity, however, these environments are still poorly understood. Here we report 15 new records of reef fish species for the Davis Seamount, Trindade Island and Martin Vaz Archipelago, in the Vitoria-Trindade Chain (VTC). Such isolated sites are among the last frontier for shallow reef exploration in the South Atlantic, and more scientific effort is needed to better understand their biogeography and to help in conservation efforts.

POLITICAL AND STRATEGIC COORDINATION AND COOPERATION FOR DEVELOPMENT: THE CASES OF ZPCSA AND GGC

2016 ◽  
Vol 31 (2) ◽  
pp. 19-36
Author(s):  
Paulo Fagundes Visentini ◽  
Analúcia Danilevicz Pereira
Keyword(s):  
South Atlantic ◽  
Strategic Orientation ◽  
International Affairs ◽  
The South ◽  
Strategic Issues ◽  
Strategic Coordination ◽  
Regional Order ◽  
Energy Products ◽  
A Site ◽  
Political Economic

The creation of the Zone of Peace and Cooperation of the South Atlantic (ZPCSA) in 1986 and the Gulf of Guinea Commission (GGC) in 2001 was about changes in the distribution of world power. This article argues that though they emerged at different times, their strategic orientation converges in a number of areas related to the significant interests in the South Atlantic as an area of stability in the region to be marked by strong political, economic and military ties. They also converge on the ideal for development, security and greater projection of power and influence in international affairs. The South Atlantic being a route of passage and trade, as a means of access and flow of energy products, the region became a site for new calculations of regional strategic powers about world affairs. The article also argues that ZPCSA and GGC are therefore crucial for the regional order and the development of higher capacities for cooperation on strategic issues. The actual point of convergence extends to ensuring the sovereignty through dialogue between the states in the region that are involved.

Observed seasonal regimes of North-South Atlantic Ocean interbasin exchange

2019 ◽  
Author(s):  
Hamed D. Ibrahim
Keyword(s):  
North Atlantic ◽  
Climate Models ◽  
South Atlantic ◽  
Meridional Overturning Circulation ◽  
Volume Flux ◽  
The South ◽  
The North ◽  
Basin Scale ◽  
Interbasin Exchange ◽  
North And South

North and South Atlantic lateral volume exchange is a key component of the Atlantic Meridional Overturning Circulation (AMOC) embedded in Earth’s climate. Northward AMOC heat transport within this exchange mitigates the large heat loss to the atmosphere in the northern North Atlantic. Because of inadequate climate data, observational basin-scale studies of net interbasin exchange between the North and South Atlantic have been limited. Here ten independent climate datasets, five satellite-derived and five analyses, are synthesized to show that North and South Atlantic climatological net lateral volume exchange is partitioned into two seasonal regimes. From late-May to late-November, net lateral volume flux is from the North to the South Atlantic; whereas from late-November to late-May, net lateral volume flux is from the South to the North Atlantic. This climatological characterization offers a framework for assessing seasonal variations in these basins and provides a constraint for climate models that simulate AMOC dynamics.

MODELING THE SOUTH ATLANTIC OCEAN FROM MEDIUM TO HIGH RESOLUTION

2014 ◽  
Vol 31 (2) ◽  
Author(s):  
Mariela Gabioux ◽  
Vladimir Santos da Costa ◽  
Joao Marcos Azevedo Correia de Souza ◽  
Bruna Faria de Oliveira ◽  
Afonso De Moraes Paiva
Keyword(s):  
High Resolution ◽  
Atlantic Ocean ◽  
Large Scale ◽  
South Atlantic ◽  
Surface Relaxation ◽  
The South ◽  
Small Surface ◽  
Basic Model ◽  
Basic Set ◽  
Set Up

Results of the basic model configuration of the REMO project, a Brazilian approach towards operational oceanography, are discussed. This configuration consists basically of a high-resolution eddy-resolving, 1/12 degree model for the Metarea V, nested in a medium-resolution eddy-permitting, 1/4 degree model of the Atlantic Ocean. These simulations performed with HYCOM model, aim for: a) creating a basic set-up for implementation of assimilation techniques leading to ocean prediction; b) the development of hydrodynamics bases for environmental studies; c) providing boundary conditions for regional domains with increased resolution. The 1/4 degree simulation was able to simulate realistic equatorial and south Atlantic large scale circulation, both the wind-driven and the thermohaline components. The high resolution simulation was able to generate mesoscale and represent well the variability pattern within the Metarea V domain. The BC mean transport values were well represented in the southwestern region (between Vitória-Trinidade sea mount and 29S), in contrast to higher latitudes (higher than 30S) where it was slightly underestimated. Important issues for the simulation of the South Atlantic with high resolution are discussed, like the ideal place for boundaries, improvements in the bathymetric representation and the control of bias SST, by the introducing of a small surface relaxation. In order to make a preliminary assessment of the model behavior when submitted to data assimilation, the Cooper & Haines (1996) method was used to extrapolate SSH anomalies fields to deeper layers every 7 days, with encouraging results.

USING NEODYMIUM ISOTOPES TO DECIPHER COMPLEX CIRCULATION PATTERNS IN THE SOUTH ATLANTIC AT THE END OF THE CRETACEOUS

2020 ◽  
Author(s):  
Shannon J. Haynes ◽  
◽  
Kenneth G. MacLeod ◽  
Jean-Baptiste Ladant ◽  
Christopher J. Poulsen ◽  
...  
Keyword(s):  
South Atlantic ◽  
The South ◽  
Neodymium Isotopes ◽  
Circulation Patterns

Borges the Post-Orientalist

2017 ◽  
Author(s):  
Robin Fiddian
Keyword(s):  
South Atlantic ◽  
Conclusive Evidence ◽  
Binary Opposition ◽  
The South ◽  
Civilization And Barbarism ◽  
The Stranger ◽  
East West

The chapter examines several works including ‘The East’, ‘A Thousand and One Nights’, and ‘Buddhism’, which are on subjects relating to the East, and finds conclusive evidence of a post-Orientalist optic in Borges’s writing at this point in his life. Japan inspires ‘The Stranger’ and ‘Nihon’, both included in The Limit and outstanding examples of Borges’s wit and craftsmanship. A comparison between ‘Nihon’ and ‘Story of the Warrior and the Captive Woman’ from an earlier collection illustrates Borges’s evolved approach to the binary opposition between civilization and barbarism, across the East–West divide. Two milongas are also studied in the context of the war in the South Atlantic (1982) and point to a disillusioned conclusion about Argentina 170 years on from formal independence in 1810.

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