Trophic Chain
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. Marine microalgae on the southern coast of Bahia, Brazil: composition and new records of phytoplankton species
Resumo A comunidade fitoplanctônica representa o primeiro elo na cadeia trófica aquática e o conhecimento de sua composição é uma ferramenta importante para a caracterização ecológica de um sistema. Inclusive como indicador potencial de impactos antrópicos na água. O litoral sul da Bahia é um dos segmentos da costa brasileira em melhor estado de
Rodriguésia. Publicado em: 03/10/2019
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2. Heavy metals in the São Mateus Stream Basin, Peixe River Basin, Paraiba do Sul River Basin, Brazil
Resumo Empreendimentos com porte e potencial poluidor precisam ser licenciados adequadamente, fiscalizados e monitorados durante e após suas operações de forma a evitar e/ou mitigar impactos nas suas áreas de influência. A Bacia Hidrográfica do córrego São Mateus (BHCSM), situada em zona rural de Juiz de Fora (MG), é impactada por várias atividades
Rev. Ambient. Água. Publicado em: 03/06/2019
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3. Habitat complexity does not influence prey consumption in an experimental three-level trophic chain
RESUMO A complexidade de habitat influencia a diversidade de espécies e regula interações tróficas, principalmente por possibilitar a partição de recurso nos habitats e fornecer refúgio para presas. A influência da complexidade de habitat sob mais de dois níveis tróficos não é bem compreendida, especialmente porque modificações comportamentais
Iheringia, Sér. Zool.. Publicado em: 16/07/2018
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4. Protozoans bacterivory in a subtropical environment during a dry/cold and a rainy/warm season
In aquatic ecosystems, bacteria are controlled by several organisms in the food chain, such as protozoa, that use them as food source. This study aimed to quantify the ingestion and clearance rates of bacteria by ciliates and heterotrophic nanoflagellates (HNF) in a subtropical freshwater reservoir (Monjolinho reservoir -São Carlos -Brazil) during one year
Braz. J. Microbiol.. Publicado em: 2014
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5. Algae of economic importance that accumulate cadmium and lead: a review
Currently, algae and algae products are extensively applied in the pharmaceutical, cosmetic and food industries. Algae are the main organisms that take up and store heavy metals. Therefore, the use of compounds derived from algae by the pharmaceutical industry should be closely monitored for possible contamination. The pollution generated by heavy metals rel
Revista Brasileira de Farmacognosia. Publicado em: 05/06/2012
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6. Caracterização trófica da ictiofauna da Represa do Beija-Flor, na Estação Ecológica de Jataí, Luiz Antônio, SP
The feeding habits, reproduction and growth of omnivores, herbivores, detritivores and iliófagos fish species from the Beija-flor reservoir in Jataí Ecological Station were investigated. This provides information on the trophic interaction between species, feeding habits, establishing guilds and also provides subsidies for monitoring the the Beija-flor res
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/08/2011
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7. Construction of a vector for controlled expression of chondroitinase AC for mesenchymal stem cells / Construção de um vetor para expressão controlada de condroitinase AC por células tronco mesenquimais/
Adult mammal axons fail to regenerate when damaged, generating a fundamental problem, inhibiting the recovery of injured central nervous system (CNS). The lack of full regenerative capacity of the injured CNS is due to a glial scar formation on the injury site. The glial scar is formed by astrocytes, oligodendrocyte precursor cells, and microglia, cells that
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2011
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8. Transferência trófica de mercúrio e selênio na costa norte do Rio de Janeiro
Trophic transfer of trace elements along marine food chains has been recognized as an important process influencing metal and metalloid bioaccumulation. The trophic transfer of mercury was observed between trophic levels from prey (considering fish with different feeding habits and squid) to top predator (dolphin) in a Northern coastal food chain of Rio de J
Química Nova. Publicado em: 2009
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9. Composição e sobreposição alimentar de Acestrorhynchus Britskii e A. Lacustris (Characiformes : Acestrorhynchidae) do reservatório de Sobradinho, rio São Francisco (BA)
The Acestrorhynchidae family has Acestrorhynchus as the only genus, represented by 15 species with occurrence restricted to South America. Its members possess a long and slender body, large mouth with conical and/or canine teeth, prey in a shoal formation, have piscivorous feeding habit and preference for lentic habitats such as lakes, marginal ponds and bac
Publicado em: 2009
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10. Detecção de contaminantes em espécie bioindicadora (Corbicula fluminea) - Rio Ribeira de Iguape - SP
The study assessed heavy metal concentrations in the tissue samples of Corbiculafluminea, by ICP-OES. In the tissues, average levels of 23.99 µg/g of Cu, 144.21 µg/g of Zn, 0.71 µg/g of Cd, 7.10 µg/g of Cr and 2.41 µg/g of Pb were detected ahowing that this last value is high and above the ANVISA reference (2.00 µg/g) for fish and other products. The r
Química Nova. Publicado em: 2008
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11. Uso de habitat e padrão de atividade de médios e grandes mamíferos e nicho trófico de Lobo-Guará (Chrysocyon brachyurus), Onça-Parda (Puma concolor) e Jaguatirica (Leopardus pardalis) numa paisagem agroflorestal, no Est / Habitat use and activity patterns use of large and medium size mammals and niche overlap of Manned-wolf (Chrysocyon brachyurus), Mountain-lion (Puma concolor) and ocelot (Leopardus pardalis) in a agroforest landscape, in São Paulo State
The following study analyzed activity patterns and habitat use of large and medium size mammals as well as diet and trophic niche overlapping of feline and canid species in a fragmented area of the State of São Paulo. The landscape studied contains two fully protected conservation units with cerrado and semi-deciduous vegetation and also remnants of native
Publicado em: 2008
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12. Resíduos de mineração e metalurgia: efeitos poluidores em sedimentos e em espécie biomonitora - Rio Ribeira de Iguape - SP / Residues of mining and metallurgy: pollutant effect in sediments and biomonitor organism - River Ribeira de Iguape
For approximately 40 years, Ribeira de Iguape River received mining wastes (enriched in Cu, Cr, Pb, Ag and Zn) and metallurgical slags (enriched in Cu, Zn, Cr, Fe, Pb and As), produced and discharged by Plumbum S/A, a company located in Adrianópolis (Paraná). In order to verify the contribution of these residues in the river contamination and natural purif
Publicado em: 2007