Results 41 to 50 of about 449,137 (207)

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

open access: yes, 2016
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.
Neves dos Santos, Luciano   +3 more
core   +1 more source

Commercialization of the bioinvasive mussel Perna viridis (Linnaeus, 1758), in the municipality of Niterói, Rio de Janeiro, Brazil

open access: yesBoletim do Instituto de Pesca
Ballast water is used by ships to ensure their operational safety and stability. However, the use of seawater as ballast can cause the dispersal of exotic marine species.
Carlos Eduardo de Freitas Guimarães Filho   +4 more
doaj   +1 more source

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

open access: yesGeochimica 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   +7 more
doaj  

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

open access: yesBrazilian 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

Fluctuating asymmetry and organosomatic indexes in fish: the Corocoro grunt as a case study (Haemulidae)

open access: yesAnais da Academia Brasileira de Ciências, 2021
Fluctuation asymmetries (FA) are random on the bilateral symmetry plan of paired morphological characters, and other types of symmetry, such as: for instance, translational or rotational symmetry, in response to environmental, and genetic stress.
LUANA B. SEIXAS   +2 more
doaj   +1 more source

Efeito de sedimentos contaminados sobre a excreção de nitrogênio do camarão Penaeus paulensis

open access: yesBrazilian Archives of Biology and Technology, 1999
Physiological response (ammonia excretion) of the shrimp Penaeus paulensis exposed to contaminated sediments of Guanabara Bay and Sepetiba Bay (Rio de Janeiro - Brazil), was monitored for 52 days.
Rosane B.C. Moraes   +4 more
doaj   +1 more source

A strong CO2 sink enhanced by eutrophication in a tropical coastal embayment (Guanabara Bay, Rio de Janeiro, Brazil) [PDF]

open access: yesBiogeosciences, 2015
In contrast to its small surface area, the coastal zone plays a disproportionate role in the global carbon cycle. Carbon production, transformation, emission and burial rates at the land–ocean interface are significant at the global scale but still ...
L. C. Cotovicz Jr.   +4 more
doaj   +1 more source

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

open access: yesNew 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   +7 more
wiley   +1 more source

Polychaete assemblage of an impacted estuary, Guanabara Bay, Rio de Janeiro, Brazil

open access: yesBrazilian Journal of Oceanography, 2009
Thirty-eight stations were sampled in Guanabara Bay, Rio de Janeiro, Brazil, to assess the spatio-temporal diversity and biomass of sublittoral polychaetes.
Leonardo Santi, Marcos Tavares
doaj   +1 more source

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

open access: yesAustral 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   +5 more
wiley   +1 more source

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