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Avaliação do potencial fitotóxico de frações e subfrações de folhas, cascas de caule e raízes de Ocotea pulchella e dos compostos salicilato de benzila e benzoato de benzila sobre espécies invasoras
(Universidade Federal de São Carlos, 2020-12-21)
Plants synthesize a wide variety of chemicals in response to biotic and abiotic stresses. These substances are usually associated with plant defense processes against herbivores and pathogens. These substances, derived ...
Atividade antimicrobiana de extratos de folhas, caules e raízes de Eugenia klotzschiana O. Berg (Myrtaceae)
(Universidade Federal de São Carlos, 2020-09-15)
Since the discovery of penicillin by Alexander Fleming, the phenomenon of antibiotic resistance has been observed. Economic and technological factors have influenced the drug industries and decreased or ceased research ...
Qualidade do detrito na perda de massa do material particulado de eichhornia crassipes (mart.) solms sob efeito da temperatura
(Universidade Federal de São Carlos, 2019-12-12)
Carbon cycling of macrophytes in aquatic ecosystems occurs both by the characteristics of the environment (extrinsic properties) and by the different characteristics of their debris (intrinsic properties). So, in this ...
Biodiversidade de comunidades zooplanctônicas em lagoas salinas e de água doce do Pantanal Sulmatogrossense: aspectos taxonômicos, funcionais e ecológicos
(Universidade Federal de São Carlos, 2020-03-09)
In an ecosystem its main components, biotic and abiotic, operate and somehow together reach functional stability. Not only the water body is the local where communities live, but these also transform the environment in ...
Fatores que estruturam metacomunidades em fitotelmos de restinga
(Universidade Federal de São Carlos, 2020-11-26)
Neotropical ecosystems harbour an imense biodiversity, covering phytophysiognomies with unique characteristics. The restingas are phyto-physiognomies characteristic of coastal regions, with hot temperatures, poor soils and ...
Physiological responses of chlorophyta microalgae under environmentally relevant copper concentrations: biomolecules, oxidative stress and photosynthesis
(Universidade Federal de São Carlos, 2022-02-28)
Microalgae require copper (Cu) in trace levels for their growth and metabolism. It is a vital component of certain metalloproteins, participates in the photosynthetic process, and catalyzes various redox reactions. Although ...
Comunidade fitoplanctônica do reservatório de Barra Bonita e sua relação com a composição e quantidade de polissacarídeos extracelulares e agregados gelatinosos
(Universidade Federal de São Carlos, 2006-03-13)
(Gelatinous aggregates (lake snow) from an eutrophic Brazilian reservoir and their relationships with abundant phytoplanktonic algae). Lake snow and phytoplankton studies were conduced in Barra Bonita Reservoir, in
the ...
Morte celular programada em microalgas verdes cocoides e seus possíveis efeitos ecológicos
(Universidade Federal de São Carlos, 2020-03-11)
Programmed cell death may have important intra and inter-specifics effects in phytoplanktonic populations, and consequently in the ecology of freshwater ecosystems. However, before any ecological studies or evolutionary ...
Morfologia da copa e crescimento de espécies arbóreas de cerrado em campo e em câmaras de topo aberto sob elevada concentração de CO2
(Universidade Federal de São Carlos, 2020-06-01)
The Cerrado is a vegetation complex marked by climatic seasonality. It is savanna vegetation with the highest biodiversity in the world, the second-largest biome complex in South America, and the most significant hotspot ...
Comparação de ciclagem de nutrientes em pastagens convencionais, sistemas silvipastoris e floresta estacional semidecídua
(Universidade Federal de São Carlos, 2019-05-10)
Silvopastoral systems combine trees, pastures and livestock. Cattle production systems cause fewer ecosystem effects compared to conventional pasture systems. The cycle of organic capacity has an essential role, once that ...