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Item type:Item, Climate monitoring bulletin for the major river basins, Volume 3, Number 29(2025-07-16) Senna, Renato Cruz; Carvalho, Luan Rogério Rodrigues; Arcos, Adriano Nobre; Rocha, Tainá Sampaio Xavier ConchyItem type:Item, Boletín de monitoreo climático de las principales cuencas hidrográficas, Volume 3, Numero 29(2025-07-16) Senna, Renato Cruz; Carvalho, Luan Rogério Rodrigues; Arcos, Adriano Nobre; Rocha, Tainá Sampaio Xavier ConchyItem type:Item, Boletim de Monitoramento Climático de Grandes Bacias, Volume 5, Número 29(2025-07-16) Senna, Renato Cruz; Carvalho, Luan Rogério Rodrigues; Arcos, Adriano Nobre; Rocha, Tainá Sampaio Xavier ConchyItem type:Item, O efeito do fogo nos ambientes e nas comunidades de aves no Rio Culuene, afluente do Rio Xingu(2025) Kuikuro, Yuri; Ribas, Camila Cherem; Ritter, Camila Duarte; d’Horta, Fernando Mendonça; Nelson, BruceForest fires are becoming increasingly common in the southern Amazon, especially in the Culuene River region, in the Upper Xingu. These fires have profoundly affected the forest, changing its structure, reducing vegetation and impacting animal life. This study analyzed how fire has affected the birds that live in flooded areas called igapós. It also took into account the observations and knowledge of the Kuikuro and Kalapalo indigenous peoples, who live in this region and have a deep knowledge of the forest. To do this, automatic recorders were installed in 33 locations, including areas of unburned forest, savannah and areas that had already been burned. In total, 182 bird species were identified. Although the number of species remained similar between the sites, the types of birds found changed considerably. The preserved áreas had typical forest birds, while the burned areas had more species that adapt to open and disturbed environments. Analysis of the data showed that around 18% of these changes can be explained by the type of environment. In addition, interviews with indigenous people showed that 13 species no longer appeared in the burnt areas, which worries the local population. Indigenous knowledge has helped to better understand how fire affects not only the forest, but also the culture and way of life of those who live there. Combining science with traditional knowledge is essential for protecting the Amazon and facing the challenges caused by climate change.Item type:Item, Estudo químico e biológico de parkia nitida Miq. (Fabaceae)(2022) Moreira, Luana da Conceição; Nunez, Cecilia VeronicaFabaceae species are rich in bioactive secondary metabolites, such as terpenes, cardioactive glycosides, anthraquinones, alkaloids, steroids and especially flavonoids, which have biological activities: antimicrobial, anti-inflammatory, antitumor and antioxidant. Considering botanical, chemotaxonomic aspects and scarcity of studies, the objective of this study was to evaluate the antioxidant, antimicrobial, angiogenic and toxicity against Artemia salina of the extracts and characterization of isolated substances from Parkia nitida Miq. The hexane and methanolic extracts were obtained from different parts of the plant. To determine the biological activities, the following tests were carried out: antioxidant (DPPH and Fe3+/Phenanthroline), antimicrobial activity, antiangiogenic and toxicity against Artemia salina. Among the bioactive extracts, from the methanolic extract of leaflets, 3 triterpenes were identified in a mixture: α-amyrin, β-amyrin and lupeol. The methanolic extract of fertile flowers and nectarifers showed toxic activity against Artemia salina, antimicrobial, antioxidant and antiangiogenic, from this extract the fractionation resulted in the isolation of a flavanone: naringenin 5-O-glycoside. This work is the first report of naringenin 5-O-glycoside for the genus Parkia. The results obtained in this research complement the knowledge about P. nitida in the Amazon environment and reinforce the potential of this species for future work. Keywords: Phytochemistry, triterpenes, naringenin 5-O-glycoside.