Results 41 to 50 of about 6,035 (208)

Ecological risk index for aquatic pollution control: a case study of coastal water bodies from the Rio de Janeiro State, southeastern Brazil [PDF]

Geochimica Brasiliensis, 2013
The Potential Ecological Risk Index (PERI) was proposed by Håkan-son in 1980 to be used as a diagnostic tool for water pollution. The aim of this study was to apply the PERI for tropical conditions, proposing modifications.
Cristiane da Silveira Fiori, Ana Paula de Castro Rodrigues, Ricardo Erthal Santelli, Renato Campello Cordeiro, Rodrigo Guerra Carvalheira, Patrícia Correa Araújo, Zuleica Carmen Castilhos, Edison Dausacker Bidone   +7 more
doaj  

Digamacris n. gen. (Orthoptera, Acrididae, Melanoplinae) de la region atlantica meridional de Brasil Digamacris n. gen. (Orthoptera, Acrididae, Melanoplinae) from the Atlantic Meridional region of Brazil

Memorias do Instituto Oswaldo Cruz, 1989
Digamacris, a new genus of the Dichroplini (Acrididae, Melanoplinae) is described for the species Pezotettix amoenus Stal, 1878 and Dichroplus fratemus Carl, 1916, both included at present in the genus Dichroplus.
Carlos S. Carbonell
doaj   +1 more source

Virioplankton dynamics are related to eutrophication levels in a tropical urbanized bay. [PDF]

PLoS ONE, 2017
Virioplankton are an important and abundant biological component of marine and freshwater ecosystems. Often overlooked, aquatic viruses play an important role in biogeochemical cycles on a global scale, infecting both autotrophic and heterotrophic ...
Anderson S Cabral, Mariana M Lessa, Pedro C Junger, Fabiano L Thompson, Rodolfo Paranhos   +4 more
doaj   +1 more source

Fisheries and conflicts in Guanabara Bay, Rio de Janeiro, Brazil [PDF]

Brazilian Archives of Biology and Technology, 2006
Despite the magnitude of domestic and industrial pollution, fishery yield registered in several landing points at Guanabara Bay, between April 2001 and March 2002 was slightly over 19,000 tons, corresponding to a value of US$ 4.8 million. When considered only the fish directed to the food market, the total catch amounted to about 6,300 tons and a value
Jablonski, Silvio, Azevedo, Alexandre de Freitas, Moreira, Luiz Henrique Arantes   +2 more
openaire   +4 more sources

Unveiling Shell Geometry: Morphometric Differences Between the Invasive Mussel Perna viridis and the Native Perna perna

New Zealand Journal of Zoology, Volume 53, Issue 1, March 2026.
Perna viridis is an invasive mussel species recently introduced to the southeastern coast of Brazil, where it coexists with the native Perna perna. Morphological similarity between these species, particularly in early life stages, has led to frequent misidentifications, compromising ecological assessments and management efforts.
Alexandre R. da Silva, Sara C. Gasparotto, Bruno P. Masi, Márcio A. Siqueira, Luciana Altvater, Alexandre D. Kassuga, Ricardo Coutinho, Louisi S. Oliveira   +7 more
wiley   +1 more source

The Dark Side of Mucus: Stress‐Induced Mucus Aggregate (SIMA) on Tubastraea Corals in a Heavily Impacted Bay

Austral Ecology, Volume 50, Issue 8, August 2025.
ABSTRACT This study investigates the absence of non‐indigenous sun coral Tubastraea in Guanabara Bay, Rio de Janeiro, despite its presence on nearby islands. Tubastraea corals are known for their high reproductive plasticity and resilience to varying environmental conditions.
Alexandre Dias Kassuga, Luciana Altvater, Denny Fardin, Lorena da Graça Pedrosa de Macena, Alexandre R. da Silva, Ricardo Coutinho   +5 more
wiley   +1 more source

Método para classificação automática de padrões multiespectrais de imagens orbitais em águas costeiras

Brazilian Journal of Oceanography, 1980
This study is based essentially on the pattern recognition of concentrations of suspended solids from LANDSAT-2 imagery recorded on CCT's and processed through the IMAGE-100 system.
Renato Herz, Keiko Tanaka
doaj   +1 more source

Eutrophication triggers diel and seasonal shifts of carbon dioxide and oxygen in tropical urban coastal waters

Limnology and Oceanography Letters, Volume 10, Issue 3, Page 329-339, June 2025.
Abstract Coastal waters play a pivotal role in the global carbon cycle, showing increased short‐term variability of dissolved oxygen saturation (DOsat) and partial pressure of greenhouse gases like carbon dioxide (pCO2), especially in underrepresented tropical eutrophic environments.
Tainan da Fonseca Fernandes, Roberta Bittencourt Peixoto, Luana Queiroz Pinho, Letícia Cotrim da Cunha, Thiago Veloso Franklin, Ricardo César Pollery, Vinícius Peruzzi de Oliveira, Leonardo Amora‐Nogueira, Humberto Marotta   +8 more
wiley   +1 more source

BioTIME: A database of biodiversity time series for the Anthropocene. [PDF]

, 2018
MotivationThe BioTIME database contains raw data on species identities and abundances in ecological assemblages through time. These data enable users to calculate temporal trends in biodiversity within and amongst assemblages using a broad range of ...
Adam, Dušan, Akhmetzhanova, Asem A., Antão, Laura H., Appeltans, Ward, Arcos, José Manuel, Arnold, Haley, Ayyappan, Narayanan, Badihi, Gal, Baird, Andrew H., Barbosa, Miguel, Barreto, Tiago Egydio, Bates, Amanda E., Bellgrove, Alecia, Belmaker, Jonathan, Benedetti-Cecchi, Lisandro, Bett, Brian J., Bjorkman, Anne D., Bloch, Christopher P., Blowes, Shane A., Bonebrake, Timothy C., Boyd, Susan, Bradford, Matt, Brooks, Andrew J., Brown, James H., Bruelheide, Helge, Budy, Phaedra, Bässler, Claus, Błażewicz, Magdalena, Carvalho, Fernando, Castañeda-Moya, Edward, Cazzolla Gatti, Roberto, Chamblee, John F., Chase, Tory J., Chen, Chaolun Allen, Collinge, Sharon K., Condit, Richard, Cooper, Elisabeth J., Cornelissen, J. Hans C., Cotano, Unai, Daher Correa Franco, Geraldo Antonio, Damasceno, Gabriella, Davies, Claire H., Davis, Robert A., Day, Frank P., Degraer, Steven, Doherty, Tim S., Dornelas, Maria, Duffy, J. Emmett, Dunn, Timothy E., Durigan, Giselda, Edelist, Dor, Edgar, Graham J., Elahi, Robin, Elmendorf, Sarah C., Enemar, Anders, Ernest, S. K. Morgan, Escribano, Rubén, Estiarte, Marc, Evans, Brian S., Fan, Tung-Yung, Farneda, Fábio Z., Fidelis, Alessandra, Fitt, Robert, Fosaa, Anna Maria, Frank, Grace E., Fraser, William R., García, Hernando, Givan, Or, Gorgone-Barbosa, Elizabeth, Gould, William A., Gries, Corinna, Grossman, Gary D., Gutierréz, Julio R., Hale, Stephen, Harmon, Mark E., Harte, John, Haskins, Gary, Henshaw, Donald L., Hermanutz, Luise, Hidalgo, Pamela, Higuchi, Pedro, Hoey, Andrew, Hofgaard, Annika, Holeck, Kristen, Hollister, Robert D., Holmes, Richard, Hoogenboom, Mia, Hsieh, Chih-hao, Hubbell, Stephen P., Huettmann, Falk, Huffard, Christine L., Hurlbert, Allen H., Kyle Crow, Shannan, Loureiro Fernandes, Luiz, Macedo Ivanauskas, Natália, Magurran, Anne E., Moyes, Faye, Oliver, Jeffrey C., Siegwart Collier, Laura, Turini Farah, Fabiano, Van Hoey, Gert   +100 more
core   +1 more source

Caracterização da Contaminação por Petróleo e seus Derivados na Baía de Guanabara: Aplicação de Técnicas Organogeoquímicas e Organopetrográficas [PDF]

Anuário do Instituto de Geociências, 2003
The Guanabara Bay is the second bigger bay of the Brazilian coast. The bay is oneof most beautiful of the world and shelters an ample and protected natural environment,preponderant factor for the development of the region.
João Graciano Mendonça Filho, Taíssa Rego Menezes, E. Adriana de Oliveira, Michele B. Iemma   +3 more
doaj