Many things are unexplored about the river and the large Brazilian basin
that surrounds it.
ogunnus has now been found in four out of the twelve hydrographie Brazilian basins
. This species was probably introduced by human aquiculture activities in the region, where the African fish Tilapia (Oreochromis niloticus) is reared (IBAMA, 2007).
The discovery of new oilfields in the Brazilian basins
will propel the demand for offshore support vessels in South America.
Angola has awarded oil rights for the first time in frontier areas similar to prolific Brazilian basins
In a press release, Petrobras said: "If recoverable oil and gas volumes for the pre-salt reservoirs are confirmed, they will significantly raise the quantity of existing oil in Brazilian basins
, putting Brazil on par with countries with great oil reserves in the world".
The hierarchic level considered in this study was the level fourth basins, based on an official classification of Brazilian basins
(Plano Nacional de Recursos Hidricos, 2003).
Rio de Janeiro-based Petrobras (NYSE: PBR), a semi-public Brazilian energy company, has announced the discovery of new signs of oil in the Brazilian basins
of Potiguar, Sergipe-Alagoas and Santos, according to the hydrocarbons regulator ANP.