https://repositorio.ufra.edu.br/jspui/handle/123456789/19 Programa de Pós-Graduação em Ciências Biológicas/Botânica Tropical Fri, 16 Oct 2026 06:25:12 GMT 2026-10-16T06:25:12Z http://repositorio.ufra.edu.br:443/jspui/retrieve/d870b658-48d3-4ebe-8902-e4cc7fa4eb25/PPGCBOT.jfif https://repositorio.ufra.edu.br/jspui/handle/123456789/19 https://repositorio.ufra.edu.br/jspui/handle/riufra/2929 Título: Diversidade de usos de plantas trepadeiras pelos indígenas da aldeia Kriny, Terra Indígena Kayapó, Sudeste Paraense. Autor(es): FREITAS, José Rafael dos Santos Abstract: Amazonian indigenous peoples use plant species for different purposes, such as medicinal, food, ritualistic and material, among others. This study aimed to understand and document the diversity of uses, cultural and medicinal importance of akrô, the name given to climbing plants, in the daily life of the Mebêngôkre-Kayapó. The research was conducted in two phases: in the first, with the participation of two collaborators, the guided tour tool was used to record ethnobotanical information about climbing plants and collect botanical specimens. In the next phase, the checklist-interview method was used with ten new participants who contributed to confirm and expand the data previously obtained. Qualitative and quantitative analyses were performed, using the Relative Importance Index (RI) and the Level of Fidelity (FL) for medicinal species. Indications for use were categorized according to ICPC-2. The first chapter presents results related to 52 identified species, belonging to 42 genera and 23 families. Among these, the most representative was Bignoniaceae (10 spp.). There was a predominance of woody vines (51,92%). The fickle mechanism is present in 51,92% of the recorded species. Akrô are found in six environments; half of them are, at the same time, spontaneous and cultivated. Among the six categories of use, the most cited was medicinal (98,07%). The second chapter deals with the 51 medicinal species identified, distributed in 42 genera and 23 families, with Bignoniaceae being the most representative (10 spp.). The spontaneous species represent 43% and 51% are, concomitantly, spontaneous and cultivated in six environments. Regarding the habit, the medicinal species are predominantly woody vines (50,98%). The fickle type was the most frequent escalation mechanism (51,92%). The main indication of the plants was for the treatment of diseases in the General and non-specific health category (22,58%). The leaves were most used (30,67%) and tea stood out among the preparation methods (41,18%). The most versatile species were Mascagnia sepium (A.Juss.) Griseb. (IR=2.00) and Pleonotoma sp. (IR=1.82). Adenocalymma flaviflorum (Miq.) L.G.Lohmann, Fridericia sp., Distimake macrocalyx (Ruiz & Pav.) A.R. Simões & Staples and Phaseolus lunatus L. had high fidelity levels (100%). This study highlights the importance of protecting both biodiversity and ancestral knowledge, ensuring that these traditional practices continue to promote sustainability and preserve the cultural identity of indigenous populations. Mon, 06 Jul 2026 00:00:00 GMT https://repositorio.ufra.edu.br/jspui/handle/riufra/2929 2026-07-06T00:00:00Z https://repositorio.ufra.edu.br/jspui/handle/riufra/2914 Título: Mudanças impulsionadas pela idade na composição funcional, junto à diversidade funcional, moldam a prestação de serviços ecossistêmicos em sistemas agroflorestais. Autor(es): SILVA, Anthony Barbosa da Abstract: Land-use intensification has simplified functional biodiversity in tropical ecosystems, undermining the provision of ecosystem services. Although agroforestry systems (AFS) have been widely promoted as sustainable alternatives to deforestation, it remains unclear how systems’ age influence plant ecological strategies and functional diversity, and how these functional patterns affect the provision of ecosystem services. We evaluated the functional traits and diversity of tree species across eight AFSs in western Amazonia, differing in age. We measured above- and below-ground traits linked to plant ecological strategies, and ecosystem service proxies. We assessed how system age affects functional identity, trait complementarity, and multifunctionality, and how these functional patterns influence the provision of ecosystem services. Our findings reveal that the human-driven functional composition of tree communities shifts systematically with AFS age, promoting soil fertility and protection, and aboveground biomass storage, which may reduce external inputs and enhance climate resilience. Also, in long-term AFSs, functional traits converged toward conservative strategies, which support ecosystem multifunctionality and may enhance stability while reducing management costs. Functional identity, specifically to leaf dry matter content, was also associated with more protected soils in long-term AFSs. This reinforces the need to consider functional traits in agroforestry planning and policy, which can improve resilience and long-term ecosystem service provision, particularly in degraded tropical areas, strengthening the role of agroforestry in sustainable agriculture. Mon, 21 Sep 2026 00:00:00 GMT https://repositorio.ufra.edu.br/jspui/handle/riufra/2914 2026-09-21T00:00:00Z https://repositorio.ufra.edu.br/jspui/handle/riufra/2909 Título: Ajustes anatômicos e fisiológicos revelam mecanismos de sobrevivência em mudas sob déficit hídrico Autor(es): FIGUEIREDO, Stefany Priscila Reis Abstract: Some tropical forests experience prolonged droughts, making it essential to understand species' drought resistance mechanisms. Anatomical traits related to hydraulic architecture explain how water transport occurs in plants and how species cope with water scarcity. However, the ability of species to adjust their hydraulic architecture to water availability remains unclear. We assessed variations in hydraulic architecture and physiological responses to drought, focusing on the coordination between anatomical and physiological traits. This study was conducted in a greenhouse with seedlings of three tropical species: Clitoria fairchildiana, Manilkara elata, and Bertholletia excelsa. We applied three water availability treatments (15%, 50%, and 100% of field capacity) for four months. We measured branch anatomical traits: Vessel area (VA), Hydraulic diameter (Dh), Vessel density (VD), Vessel grouping index (VG), Vessel lumen fraction (F), and Xylem theoretical conductivity (Ks); physiological traits: Leaf predawn (ψPD) and midday (ψMD) water potential, and pressure-volume curve traits. All species adjusted their traits in response to water availability. Manilkara elata, the species with the highest wood density, exhibited smaller anatomical and hydraulic trait variations, with only a decrease in turgor loss point through osmotic adjustment under water limitation. The two species with lower wood density showed contrasting responses. Bertholletia excelsa enhanced hydraulic efficiency by increasing specific hydraulic conductivity, vessel area, and hydraulic diameter, while C. fairchildiana increased drought resistance by adjusting turgor loss point and osmotic potential. Our results highlight a trade-off between water transport efficiency and drought resistance, indicating distinct responses that contribute to species survival under water limitation. Mon, 07 Jul 2025 00:00:00 GMT https://repositorio.ufra.edu.br/jspui/handle/riufra/2909 2025-07-07T00:00:00Z https://repositorio.ufra.edu.br/jspui/handle/riufra/2904 Título: A tribo Ingeae Bentham (leguminosae - mimosoideae) na Floresta Nacional de Caxiuanā, Pará, Brasil Autor(es): SILVA, Francismeire Bonadeu da Abstract: (Genera Abarema Pittier, Calliandra Benth. Enterolobium Mart., Hydrochorea Barneby & J. W. Grimes, Macrosamanea Britton & Rose ex Britton & Killip and Zygia P. Brawne (Leguminosae-Mimosoideae) in Caxiuană National Forest, Pará) This study presents a taxonomic treatment of the species of the genera Abarema Pittier, Calliandra Benth., Enterolobium Mart., Hydrochorea Barneby & J. W. Grimes, Macrosamanea Britton & Rose ex Britton & Killip and Zygia P. Brawne occurring in Caxiuană National Forest, along with taxonomic key, descriptions, illustrations and comments morphological and taxonomic data as well as geographical distribution and phenology of species. Abarema was the most representative genus (3 spp.), followed by Calliandra and Zygia (2 spp. cada) and the other genera are represented by one species each. Thu, 17 Sep 2026 00:00:00 GMT https://repositorio.ufra.edu.br/jspui/handle/riufra/2904 2026-09-17T00:00:00Z