Results 181 to 190 of about 6,035 (208)

A study of Guanabara Bay sedimentation rates

Journal of Radioanalytical and Nuclear Chemistry, 1998
Sedimentation rates in Guanabara Bay were determined by applying the210Pb CRS method to sediment cores collected at five different stations. The results showed a pronounced increase from 0.1–0.2 cm·year−1 to 1–2 cm·year−1, in sedimentation rate, over the last 40–50 years.
J. M. Godoy, I. Moreira, M. J. Bragança, C. Wanderley, L. B. Mendes   +4 more
openaire   +1 more source

Multiproxy analysis in contaminated sediments from Niterói Harbour (Guanabara Bay), Brazil

Marine Pollution Bulletin, 2022
Harbours are located in major urban centres around the world and are of great economic importance to the cities in their surroundings. However, the intense traffic of boats and ships can generate environmental impacts that can directly affect the local biota as well as the population that lives in surrounding areas.
Alex, da Silva de Freitas, Ana Dalva, de Oliveira Santos, Louise, da Cruz Félix, Rejany Ferreira, Dos Santos, Daniele Maia, Bila, Valquíria Maria, de Carvalho Aguiar, Estefan Monteiro, da Fonseca, José Antônio Baptista, Neto   +7 more
openaire   +2 more sources

Geomicrobiology of cores from Suruí Mangrove – Guanabara Bay – Brazil

Marine Pollution Bulletin, 2010
The aim of this work was to quantify the biopolymers associated to esterase enzymes and identify bacterial respiratory activity in four cores collected in Suruí Mangrove, Guanabara Bay - RJ. Biopolymer concentration was 1000 times lower than previously reported in the literature, indicating the need for creating and establishing eutrophication ...
Luiz Francisco, Fontana, João Graciano, Mendonça Filho, Annibal Duarte Pereira, Netto, Elisamara, Sabadini-Santos, Alberto Garcia, de Figueiredo, Mirian Araújo Carlos, Crapez   +5 more
openaire   +2 more sources

Guanabara Bay Report Card

2017
This report card provides a transparent, timely, and geographically detailed assessment of health in Guanabara’s Bay and basin using data from 2013-2015. Guanabara Bay health and Guanabara Bay Basin health are defined as the progress of five water quality indicators toward scientifically-derived thresholds or goals. The indicators are combined into two
Nemazie, Dave, Fries, Alexandra, Dennison, Bill   +2 more
openaire   +1 more source

Archaeal Communities in a Tropical Estuarine Ecosystem: Guanabara Bay, Brazil

Microbial Ecology, 2007
Guanabara Bay is an eutrophic estuarine system located in a humid tropical region surrounded by the second largest metropolitan area of Brazil. This study explores the contrasting environmental chemistry and microbiological parameters that influence the archaeaplankton diversity in a pollution gradient in Guanabara Bay ecosystem.
Ricardo P, Vieira, Maysa M, Clementino, Alexander M, Cardoso, Denise N, Oliveira, Rodolpho M, Albano, Alessandra M, Gonzalez, Rodolfo, Paranhos, Orlando B, Martins   +7 more
openaire   +2 more sources

An environmental overview of Guanabara Bay, Rio de Janeiro

Regional Studies in Marine Science, 2016
Abstract As most port areas throughout the world, Guanabara Bay (GB), which hosts the Harbour of Rio de Janeiro (HRJ), is under intense environmental stress. Located in one of the most iconic places of the world, GB environmental status has been the focus of worldwide attention with the imminent 2016 Olympic Games.
A. Soares-Gomes, B.A.P. da Gama, J.A. Baptista Neto, D.G. Freire, R.C. Cordeiro, W. Machado, M.C. Bernardes, R. Coutinho, F.L. Thompson, R.C. Pereira   +9 more
openaire   +1 more source

Petrobras Wildlife Rehabilitation Response at Guanabara Bay Oil Spill

International Oil Spill Conference Proceedings, 2003
ABSTRACT Due to an oil spill at Guanabara Bay, Rio de Janeiro, on January 18th, 2000, a large effort was made by PETROBRAS and the Museu Oceanográfico of Rio Grande (Oceanographic Museum / Centre for Rehabilitation of Marine Animals) to rescue and rehabilitate affected wildlife.
Lauro Barcellos, Rodolfo Pinho Silva Fo., Valéria Ruopollo, Pedro Penido Duarte Guimarães, Paulo César Dias Pará, Fábio Augusto P. Reis, Ana Cristina Lima Menezes, José Luiz Bampa Sauerbronn   +7 more
openaire   +1 more source

Trace metal retention in mangrove ecosystems in Guanabara Bay, SE Brazil

Marine Pollution Bulletin, 2002
Along contrasting environmental conditions (e.g., degree of trace metal contamination and mangrove forest structural development), sediments of Laguncularia racemosa-dominated mangrove stands in Guanabara Bay (SE Brazil) presented a trend of trace metal accumulation in forms with low potential of remobilization and biotic uptake.
W, Machado, E V, Silva-Filho, R R, Oliveira, L D, Lacerda   +3 more
openaire   +2 more sources

Guanabara Bay Oil Spill 2000, Brazil – Cetacean Response

International Oil Spill Conference Proceedings, 2003
ABSTRACT On the 18th January 2000 a broken pipeline owned and operated by the oil company Petrobras spilt some 1300 tonne of bunker fuel into Guanabara Bay, Rio de Janeiro. The wildlife response was divided amongst 2 operational strategies and included – avian fauna and cetaceans.
openaire   +1 more source

Characterization of hydrocarbonoclastic bacterial communities from mangrove sediments in Guanabara Bay, Brazil

Research in Microbiology, 2006
Hydrocarbonoclastic bacterial communities inhabiting mangrove sediments were characterized by combining molecular and culture-dependent approaches. Surface sediments were collected at two sampling sites in Guanabara Bay (Rio de Janeiro, Brazil) and used to inoculate in vitro enrichment cultures containing crude oil to obtain hydrocarbonoclastic ...
Elcia Margareth S, Brito, Rémy, Guyoneaud, Marisol, Goñi-Urriza, Antony, Ranchou-Peyruse, Arnaud, Verbaere, Miriam A C, Crapez, Julio César A, Wasserman, Robert, Duran   +7 more
openaire   +2 more sources