Benthic Algae
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Soft-bodied benthic algae in pristine Brazilian streams: from acid to karst
ABSTRACT This study evaluated soft-bodied benthic algae from seven streams located in protected areas of central Brazil (Parque Nacional de Brasília, Parque Nacional da Chapada dos Veadeiros and Parque Estadual de Terra Ronca), and related them to abiotic factors. We addressed the following questions: A) how algal community structure in Cerrado streams is i
Acta Bot. Bras.. Publicado em: 12/09/2019
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2. Spatial distribution in marine invertebrates in rocky shore of Araucania Region (38° S, Chile)
Resumo As costas rochosas no Chile têm uma ampla diversidade de espécies de invertebrados, que incluem espécies com abundância marcada em determinadas regiões. O objetivo do presente estudo é analisar o padrão de distribuição espacial em diferentes espécies de invertebrados marinhos na costa rochosa da região de Araucanía, considerando se essas e
Braz. J. Biol.. Publicado em: 05/08/2019
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3. 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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4. Organização trófica da comunidade de peixes de poças de maré da Praia dos Castelhanos (ES), Atlântico sudoeste tropical / Trophic organization of the tidepool fish community of Praia dos Castelhanos (ES), southwestern tropical Atlantic
The identification of the trophic groups is fundamental to understanding the factors responsible for organizing and structuring the communities. Accordingly, the present study was conducted in the tidepools of Praia dos Castelhanos, located in the Espírito Santo State, southeastern Brazil, in order to describe the trophic organization of the fish community,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/09/2012
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5. Current knowledge on biotechnological interesting seaweeds from the Magellan Region, Chile
This paper is a compilation of data from investigations made with marine benthic algae from the Magellan Region that have biotechnological utilization in human consumption or medicine or as a source of phycolloids or food supplements or animal feed. The most important Rhodophyta species are: Ahnfeltia plicata (Hudson) E.M. Fries for agarose production, Gigar
Revista Brasileira de Farmacognosia. Publicado em: 05/06/2012
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6. Predation on microcrustaceans in evidence: the role of chaoborid larvae and fish in two shallow and small Neotropical reservoirs
This study was focused on the predation upon microcrustaceans by an invertebrate predator (chaoborid larvae), and vertebrate predators (fish), in two small reservoirs in southeastern Brazil, with and without macrophytes, in two climatic periods (dry and rainy seasons). Chaoborus larvae were sampled in the limnetic zone, as they are scarce in the littoral, an
Nauplius. Publicado em: 2012-06
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7. Rhodolith beds in Brazil: a new potential habitat for marine bioprospection
Rhodoliths are the free-living forms of a number of nongeniculate coralline algae. Rhodolith beds are a common feature of subtidal environments and have been recognized as important carbonate producers and paleoenvironmental indicators, as well as recognized as habitat-forming species. The rhodolith structure provides a hard three-dimensional substrate servi
Revista Brasileira de Farmacognosia. Publicado em: 24/05/2012
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8. Efeitos da rugosidade de substratos, distúrbios físicos e organismos pastejadores na estruturação de assembleias de algas bênticas e na biomassa perifítica em um riacho subtropical : uma abordagem experimental
Os estudos apresentados nesta tese tiveram como objetivo compreender aspectos da organização de assembleias de algas bênticas em riachos. Foi avaliado especificamente o efeito da heterogeneidade de habitat na escala de rugosidade de substratos e sua interação com distúrbios hidrológicos e organismos pastejadores (grazers). Utilizou-se uma abordagem ex
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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9. Macrolgae as an indicator of the environmental health of the Pirangi reefs, Rio Grande do Norte, Brazil
The coral reefs of Pirangi beach have suffered the impact of anthropic actions, mainly those related to tourism. To evaluate these effects, algal samples were collected at nine stations, distributed along the reef fringe. The macrobenthic community (algae/coral) was identified through photographic methods. A total of thirty species of algae, five species of
Revista Brasileira de Farmacognosia. Publicado em: 22/04/2011
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10. Influência da composição de substrato do recife na atividade e distribuição de peixes zoobentívoros no arquipélago de Fernando de Noronha, Pernambuco / The influence of substratum composition on the activity and distribution of benthic carnivorous reef fishes of the Fernando de Noronha Archipelago
Reefs provide shelter and food for several fish species and, thus, there may be a correlation between the abundance and behaviour of fishes and the reef bottom composition-Physical factors, such as water movement and depth, may also have a profound impact in species distribuiton and activity on reefs. Here, the possible relationship between the distribution
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/07/2010
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11. Presença de dinoflagelados bentônicos potencialmente tóxicos: identificação do perigo em áreas destinadas à maricultura na Baía de Sepetiba, RJ. / Presence of potentially toxic benthic dinoflagellates: identification of hazard in shellfish growing areas in the Sepetiba Bay, RJ.
The malacoculture (cultivation of shellfish) is the second most significant activity of the Brazilian mariculture, where the cultivation of bivalve molluscs (mussels, oysters and scallops) stands out nationally. The bivalves show an excellent nutritional value when they are used as food by humans, containing a great biological value of protein, low in fat, v
Publicado em: 2009
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12. Faunistic and geographic distribution of benthic hydroids (Cnidaria, Hydrozoa) from southwestern Atlantic / Faunística e distribuição geográfica de hidróides bentônicos (Cnidaria, Hydrozoa) do sudoeste do Atlântico
O aprofundamento de estudos faunísticos e taxonômicos é essencial para a inferência de áreas de distribuição geográfica e, conseqüentemente, de áreas de endemismo. Estes estudos são incipientes para o ambiente marinho, incluindo o sudoeste do Atlântico, particularmente em relação aos cnidários. Os principais objetivos deste estudo foram (1) le
Publicado em: 2009