Results 11 to 20 of about 27 (22)

Diet and feeding behavior of Kyphosus spp. (Kyphosidae) in a Brazilian subtropical reef

open access: yesBrazilian Archives of Biology and Technology, 2006
The present study analyzed and compared diet and feeding behavior (substrate use, position in water column, interactions with other fishes) of Kyphosus spp. (sea chubs) in a Brazilian subtropical reef.
Renato Azevedo Matias Silvano   +1 more
doaj   +1 more source

Preservação e Contexto Paleoambiental das Pegadas do Triássico Superior (Formação Santa Maria) do Sul do Brasil. [PDF]

open access: yesAnuário do Instituto de Geociências, 2007
Na Formação Santa Maria há registrospreliminares de pegadas fósseis, mas sua forma depreservação e contexto paleoambiental permanecemdesconhecidos, sendo o objetivo deste trabalhoelucidar esses fatores.
Rafael Costa da Silva   +3 more
doaj  

Evaluation and Testing in Operational Environments: Accelerating Development Cycles for Maritime Unmanned Systems

open access: yesJournal of Marine Science and Engineering
According to Martec’s Law, technology is evolving exponentially, while organizations are evolving logarithmically. These two trends present unprecedent challenges to the development of future maritime unmanned vehicle systems (MUS).
João Borges de Sousa
doaj   +1 more source

Análise biomecânica da fase de contato no salto em profundidade no solo e na água

open access: yesRevista Brasileira de Cineantropometria e Desempenho Humano, 2016
O treinamento pliométrico em ambiente aquático tem sido proposto porque reduz as cargas proporcionada pela ação do empuxo. Entretanto, pouco se sabe sobre as características biomecânicas dos exercícios pliométricos na água, as quais podem auxiliar na ...
Caroline Ruschel   +6 more
doaj   +1 more source

Habitat selection by fish in an artificial reef in Ilha Grande Bay, Brazil

open access: yesBrazilian Archives of Biology and Technology, 2001
The use of artificial structures as a shelter for fishes was evaluated aiming to assess increase in fish abundance in Ilha Grande Bay at Southeast Brazilian coast (Lat: 22°8'-23°5' S; Long. 44º05’-44º40’W).
Daniel Shimada Brotto   +1 more
doaj   +1 more source

Arraias em rios da região Sudeste do Brasil: locais de ocorrência e impactos sobre a população Stingrays in rivers in southeastern Brazil: occurrence localities and impact on the population

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 2010
INTRODUÇÃO: No presente trabalho objetivamos descrever o processo de colonização da Bacia do Alto Paraná, Sudeste do Brasil, por arraias, demonstrando sua atual situação e provável tendência, os impactos gerados e discutindo algumas ações de manejo e ...
Domingos Garrone Neto   +1 more
doaj   +1 more source

A invenção da roda

open access: yesRevista Eco-Pós, 2016
Qual o futuro das máquinas? E o presente? Pode-se dizer que as máquinas servem para acelerar a velocidade, encurtar o espaço, captar imagens e para uma infinidade de outras coisas.
Letícia Ramos
doaj   +1 more source

Mixed-species schooling behavior and protective mimicry involving coral reef fish from the genus Haemulon (Haemulidae)

open access: yesNeotropical Ichthyology, 2011
The present study analyzed heterotypic schooling behavior and protective mimicry relationships involving species of the genus Haemulon and other coral reef fishes on coastal reefs at Tamandaré, Pernambuco State, Northeastern Brazil.
Pedro Henrique Cipresso Pereira   +2 more
doaj  

Feeding and social behavior of the piabanha, Brycon devillei (Castelnau, 1855) (Characidae: Bryconinae) in the wild, with a note on following behavior

open access: yesNeotropical Ichthyology, 2011
Knowledge concerning the behavior of wild freshwater fishes in Brazil is restricted to a few studies, despite such studies being able to answer fundamental questions about conservation. Species of Brycon are amongst the most threatened in the Neotropics,
Pedro G Azevedo   +2 more
doaj  

Dynamics of fish assemblages on a continuous rocky reef and adjacent unconsolidated habitats at Fernando de Noronha Archipelago, tropical western Atlantic

open access: yesNeotropical Ichthyology, 2011
In recent years, many studies investigated how density-dependent factors, such as shortages in microhabitat and food availability influence the structure of reef fish assemblages.
Paulo R. Medeiros   +2 more
doaj  

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