Results 11 to 20 of about 449,137 (207)

Modern Diatom Distributions in Guanabara Bay Sediment and Oceanic Areas, Rio de Janeiro (Brazil) [PDF]

Anuário do Instituto de Geociências, 2011
One hundred and fifty three superficial sediments were collected in Guanabara Bay to physical-chemistry and diatom analyses in the ambit to Monitoring Project (CENPES/PETROBRAS). A total of 146 taxa of diatoms were identified where the most frequent taxa
Frederico S. Silva, Vanessa M. Laut, Lazaro L.M. Laut, Alberto G. de Figueiredo Jr.   +3 more
doaj   +1 more source

Long-term (2002-2011) changes on Cetengraulis edentulus (Clupeiformes: Engraulidae) fisheries in Guanabara Bay, Brazil

Revista de Biología Tropical, 2014
C. edentulus accounts for the major fishery resource in Guanabara Bay, but there are only few studies about its captures.This study analyzed the long term changes on C.
Ana Clara Sampaio Franco, Daniel Shimada Brotto, David Man Wai Zee, Luciano Neves dos Santos   +3 more
doaj   +1 more source

Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study

Anais da Academia Brasileira de Ciências, 2013
Guanabara Bay, located in Rio de Janeiro state. It is surrounded by the second most important metropolitan area of the country. Over recent decades, land disturbance and urbanization in the surrounding area has significantly increased sediment input to ...
Jose A. Baptista Neto, Tomas C.S. Peixoto, Bernard J. Smith, John J. Mcalister, Soraya M. Patchineelam, Sambasiva R. Patchineelam, Estefan M. Fonseca   +6 more
doaj   +2 more sources

Acute and chronic toxicity of sediment samples from Guanabara Bay (RJ) during the rainy period

Brazilian Journal of Oceanography, 2010
Guanabara Bay is a marine-estuarine environment of high ecological and socio-economic importance, subject to a variety of environmental impacts. Sediment is the eventual repository for most substances introduced into water bodies and may, therefore ...
Luciane Alves Maranho, Ilene Matanó Abreu, Ricardo Erthal Santelli, Renato Campelo Cordeiro, Abílio Soares-Gomes, Lucas Buruaem Moreira, Rodofley Davino Morais, Denis Moledo de Sousa Abessa   +7 more
doaj   +2 more sources

Reproductive plasticity and environmental tolerance of invasive African catfish (Clarias gariepinus) in a tropical Brazilian river. [PDF]

J Fish Biol
Abstract Invasive alien species (IAS) pose a significant threat to biodiversity, particularly when endowed with high ecological and reproductive plasticity. The African catfish, Clarias gariepinus, is one such species, widely recognized for its ability to colonize and establish in diverse tropical ecosystems.
Dumith MT, Dos Santos AFGN.
europepmc   +2 more sources

A new endemic pearl cichlid of the 'Geophagus' brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River basin, southeastern Brazil. [PDF]

J Fish Biol
Abstract A new species of pearl cichlid of the ‘Geophagus’ brasiliensis species group, endemic to the Piranga River, a major tributary of the upper Doce River basin in the state of Minas Gerais, southeastern Brazil, is herein described. The new species is delimited using an integrative approach, with molecular‐based species delimitation methods coupled
de Assis CE, Dergam JA, Cunha AF, Machado VN, Hrbek T, Vicente NMF, de Queiroz V, Henschel E.   +7 more
europepmc   +2 more sources

Do Boat Traffic and Habitat Features Shape Habitat Use by Guiana Dolphins (<i>Sotalia guianensis</i>) in a Brazilian Estuary? [PDF]

Ecol Evol
This study investigates how boat traffic and environmental factors shape the spatial distribution and habitat selection of Guiana dolphins in a northeastern Brazilian estuary. Although dolphins and boats overlapped broadly—particularly in deeper waters—dolphins showed a preference for areas with lower boat traffic, greater depths, and proximity to ...
Lima A, Giné GAF, Cruz KTS, Teixeira NN, Strenzel GMR, Le Pendu Y.   +5 more
europepmc   +2 more sources

Future Guanabara Bay Clean-up: Rio de Janeiro’s Hillslope Favelas Ought to Be its Amicable Pinnacles [PDF]

, 2021
: This article brings a social discussion about the surroundings of Guanabara Bay, showing that there are technological instruments capable of promoting citizenship and quality of life for the inhabitants of the slum areas.
Cathcart, Richard Brook; GEOGRAPHOS, Burbank, California USA., Serpa, Nilo; Centro Universitário ICESP, Finkl, Charles; Florida Atlantic University, Boca Raton, Florida 33431, USA.   +2 more
core   +1 more source

Bacterial production in Guanabara Bay (Rio de Janeiro, Brazil) evaluated by ³H-leucine incorporation [PDF]

Brazilian Archives of Biology and Technology, 2000
The aim of this work was to evaluate the necessary ³H-leucine concentration to estimate bacterial production in Guanabara Bay through saturation curves.
Alessandra M. Gonzalez, Rodolfo Paranhos, Luciana Andrade, Jean L. Valentin   +3 more
doaj   +1 more source

Trophic interactions and metal transfer in marine ecosystems driven by the Peruvian scallop Argopecten purpuratus aquaculture

Journal of the World Aquaculture Society, Volume 53, Issue 2, Page 452-474, April 2022., 2022
Abstract This study investigates the trophic interactions and As and Cd transfer along seven marine ecosystems in Peru. Five of these ecosystems are driven by aquaculture of the Peruvian scallop Argopecten purpuratus. A southward increased gradient of δ15N was observed among the three examined regions along the Peruvian coast.
Iván Loaiza, Gudrun De Boeck, Juan Alcazar, Diego Campos, Susana Cárdenas‐Alayza, María Ganoza, Muriel Gómez‐Sanchez, María Miglio, Marleen De Troch   +8 more
wiley   +1 more source