Coastal Environment
Mostrando 13-24 de 189 artigos, teses e dissertações.
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13. Structure and temporal variation of the phytoplankton of a macrotidal beach from the Amazon coastal zone
ABSTRACT The present study aimed to analyze the structure and the temporal variation of the phytoplankton of Ajuruteua beach (Bragança, Pará) and to investigate the influence of environmental variables on the dynamics of this community to provide a basis about the trophic state of this environment. Biological, hydrological and hydrodynamic samplings were p
An. Acad. Bras. Ciênc.. Publicado em: 2016-09
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14. Invading the natural marine substrates: a case study with invertebrates in South Brazil
ABSTRACT The number of biological invasions has grown dramatically in recent decades, as well as the world's human population and coastal development. Anthropogenic habitats, such as pier pilings and break waters, have been constantly added to marine environment, usually concentrated in estuarine areas. These habitats are focal points for marine invasions, b
Zoologia (Curitiba). Publicado em: 20/06/2016
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15. Molecular variations in Vibrio alginolyticus and V. harveyi in shrimp-farming systems upon stress
A study was performed to investigate the genomic variations in the shrimp farm isolates of Vibrio alginolyticus and V. harveyi when the isolates were subjected to environmental stress. Samples of shrimps, water and sediment were collected from Southern Indian coastal shrimp farms. Vibrio isolates were biochemically identified and confirmed using 16S rDNA and
Braz. J. Microbiol.. Publicado em: 27/10/2015
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16. Considerations regarding the dominance of Cylindrospermopsis raciborskii under low light availability in a low phosphorus lake
ABSTRACTAlthough many studies have shown that the dispersion, increased abundance and dominance of cyanobacteria can be attributed to nutrient enrichment, we discuss features contributing to the dominance of Cylindrospermopsis raciborskii in a shallow, polymictic, subtropical coastal lake with low phosphorus and light limitation (Peri Lake). The presence and
Acta Bot. Bras.. Publicado em: 2015-09
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17. Potential Use of Polysaccharides from the Brown Alga Undaria pinnatifida as Anticoagulants
Undaria pinnatifida (U. pinnatifida) is a highly invasive species and has caused concern all over the world because it has invaded coastal environments, has the potential to displace native species, significantly alters habitat for associated fauna, and disturbs navigation. Any attempt to eradicate it would be futile, owing to the elusive, microscopic gameto
Braz. arch. biol. technol.. Publicado em: 23/06/2015
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18. New drugs with antiprotozoal activity from marine algae: a review
The use of indigenous or remote popular knowledge to identify new drugs against diseases or infections is a well-known approach in medicine. The inhabitants of coastal regions are known to prepare algae extracts for the treatment of disorders and ailments such as wounds, fever and stomach aches, as for the prevention of arrhythmia. Recent trends in drug rese
Rev. bras. farmacogn.. Publicado em: 2014-06
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19. Larval and adult density of the porcellanid crab Petrolisthes armatus (Anomura: Porcellanidae) in an Amazon estuary, northern Brazil
Petrolisthes armatus (Gibbes, 1850) is a porcellanid crab with a wide geographical distribution. In the present study we analyzed variations in the abundance of P. armatus adults and larvae over an annual cycle in the Marapanim estuary of the Amazon coastal zone, in the northeastern portion of the state of Pará, Brazil. Particularly, we focused on the prese
Zoologia (Curitiba). Publicado em: 06/12/2013
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20. Diet and reproductive dynamics of Trachelyopterus lucenai (Siluriformes: Auchenipteridae) in subtropical coastal lagoons in southern Brazil
This study analyzed the diet and reproductive dynamics of Trachelyopterus lucenai Bertoletti, Pezzi da Silva & Pereira, 1995, an allochthonous fish species in the subtropical coastal lagoons of the Tramandaí River, Rio Grande do Sul, Brazil. The fecundity of the species is described for the first time. Specimens were captured in the interconnected lagoons I
Zoologia (Curitiba). Publicado em: 2013-06
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21. Ardra profiles of bacteria and archaea in mangrove sediments with different levels of contamination in the estuarine complex of Paranaguá, Brazil
The mangrove's sediments from the coastal areas under human activities may contain significant contaminations by hydrocarbons, even when there are no visual evidences of it. The microorganisms are essential to these ecosystems, especially in the control of their chemical environment. Sediment samples were collected in two regions under different environment
Braz. arch. biol. technol.. Publicado em: 2013-04
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22. Ethnobotanical and ethnoecological study of Butia catarinensis Noblick & Lorenzi: contributions to the conservation of an endangered area in southern Brazil
Butia catarinensis Noblick & Lorenzi is a small palm (approximately 2 m high when full-grown) endemic to the southern coast of Brazil. Local farmers use the fruit and pulp for various purposes, and this extractive activity complements their income. The objective of this study was to understand the relationships between local people and B. catarinensis in its
Acta Bot. Bras.. Publicado em: 2013-03
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23. Evaluation of the environmental sustainability of massive forestry fragments of the coastal plain and lower slopes of Bertioga (SP) / Avaliação da sustentabilidade ambiental dos fragmentos de maciços florestais da planície costeira e baixa encosta do município de Bertioga (SP)
The São Paulo coastal zone alternates extensive zones of great diversity of biotopes with others intensively degradated. These characteristics are observed in the municipality of Bertioga and its forest regions localized among Itaguaré and Guaratuba river basins. Due to their special characteristics these basins are denominated Bertioga System. The aim of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/11/2012
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24. Representações e percepções sobre ambiente e conservação como subsídio ao Gerenciamento Costeiro Integrado: estudo de caso com grupos sociais da região de Cananéia, litoral sul do Estado de São Paulo / Representations and perceptions about environment and conservation as a subsidy to Integrated Coastal Management: case study with social groups from Cananéia region, São Paulo State, Brazil
The Integrated Coastal Management (ICM) requires dialogue between different interests and social participation in decision-making is an important principle. However, the actions of individuals and groups are not based on a single objective reality, but in different ways of perceiving the world. Conflicts are generated when decision-making is done by one-side
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/09/2012