Open AccessBiogeografia e Bionomia dos Crustáceos do Litoral Equatorial Brasileiro.
Author(s) -
Petrônio Alves Coêlho,
Marilena Ramos-Porto,
Maria Luise Koening
Publication year - 1980
Publication title -
tropical oceanography
Language(s) - English
Resource type - Journals
eISSN - 1679-3013
pISSN - 1679-3005
DOI - 10.5914/tropocean.v15i1.2573
Subject(s) - geology , continental shelf , oceanography , terrigenous sediment , upwelling , fluvial , geomorphology , sediment , structural basin
The Brazilian Coast between Amapa and Piaur States is characterized by Itshidrology. This results of several factors: the influence of superficial oceaniccurrents, the discharge of the great equatorial rivers, the upwelling at the edge of continental shelf, etc. There a~ll several bottom types on continental shelf, and their horizontal distribution depends of oceanic and fluvial-terrigenous influences. There are two natural regions, one with sandy and organogenous bottoms, high and stable temperature and salinity, and another with muddy and sandy bottoms, and unstable temperature and salinity. The first natural regions corresponds to the Brazilian Province of the biogeographers, and the second one to Guyanian Province. It is possible to admit 5 faunistic communities of crustaceans inhabiting:1) muddy and sandy-muddy bottoms; 2) sandy bottoms; 3) coastal organogenous bottoms; 4) organogenous bottoms of transition; 5) deep sandy and organogenous bottoms.