http://repositorio.ufc.br/handle/riufc/324 Sun, 16 Aug 2026 08:18:19 GMT 2026-08-16T08:18:19Z http://repositorio.ufc.br/handle/riufc/87508 Título: Personalidades Influenciam o sucesso reprodutivo de vespas eussociais primitivas? Autor(es): Almir, João Paulo Silva Abstract: The differences in survival and reproductive success of individuals in a population are shaped by natural selection. Individuals may differ, among other factors, on the individual behavior, which generally assumed to be flexible. Individuals may exhibit limited consistent behavioral plasticity which is consistent with time and different contexts (Personality). These behavioral traits can influence the survival and reproductive success. The present study examined the influence of the following behavioral dimensions: aggression, activity, exploration and daring on the reproductive success of primitive eusocial wasps, Mischocyttarus nomurae. Tests were performed to measure the behaviors for the four dimensions. To assess reproductive success (SR) it was measured the number of eggs (SR - I), larvae (SR - II) and pupae (SR - III). However, reproductive success was influenced by behavioral flexibility. The SR - I was influenced by the flexibility in activity and exploitation. The SR - II was influenced by the flexibility of aggression and exploitation. And the SR - III was influenced by flexibility in activity. Flexibility in aggressiveness relationship between reproductive success may be related to the usurpation of nests by conspecifics. Similarly, flexibility in activity and exploitation, can be linked to the maintenance of nests and exploring new environments, respectively. So personalities in aggressiveness and boldness do not influence the reproductive success of primitive eussocias wasps. However, behavioral flexibility in aggressiveness, activity and exploitation in primitive eusocial wasps has effect on reproductive success. Tipo: Dissertação Fri, 01 Jan 2016 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/87508 2016-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/86788 Título: Calibração pólen-vegetação e reconstituição paleoambiental dos últimos 7.500 anos de sedimento lacustre no ecótono cerrado-caatinga (NE, Brasil) Autor(es): Silva, Maria Virgínia Oliveira da Tipo: Tese Wed, 01 Jan 2025 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/86788 2025-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/86611 Título: Potencial dendrocronológico e relações clima-crescimento em espécies de manguezal Autor(es): Silva, Mateus de Oliveira Tipo: Dissertação Thu, 01 Jan 2026 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/86611 2026-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/86435 Título: Análise geoquímica de micronutrientes metálicos e aplicação de índices de risco ecológico em solos de áreas suscetíveis à desertificação no Jaguaribe, Ceará Autor(es): Oliveira, Eryc Jefferson Alves de Abstract: This study evaluated the availability of metals and the associated ecological risk in soils withdifferent degrees of degradation in a desertification-prone region in the municipality ofJaguaribe, Ceará State, Brazil. Three areas representing distinct stages of degradation wereselected: control area (CA), recovering area (RA), and degraded area (DA). In each area, threecomposite soil samples were collected at a depth of 0–20 cm, totaling nine samples. Eachsample was analyzed in triplicate in the laboratory to determine its physicochemical propertiesand the concentrations of B, Cu, Fe, Mn, Mo, Ni, and Zn. Metal concentrations were obtainedby partial acid digestion according to the EPA 3051A method and expressed as pseudo-totalconcentrations. Potential ecological risk was assessed using quantitative indices:Geoaccumulation Index (Igeo), Pollution Index (PI), Enrichment Factor (EF), and PollutionLoad Index (PLI). Statistical analyses were performed to evaluate the influence of independentvariables (soil degradation degree: DA, RA, and CA; and soil physicochemical attributes, suchas pH and organic matter) dependent variables corresponding to metal concentrations. Thisanalysis included normality tests, ANOVA, Kruskal-Wallis, and Spearman correlation. Ingeneral, soils from the degraded area showed lower concentrations of essential metals, exceptfor Fe, which presented higher levels in the degraded area, possibly due to the accumulation ofiron oxides in the clay fraction. Ecological risk indices indicated the absence of significantanthropogenic contamination, with values classified as non-polluted or minimally enriched.Significant correlations between Cu and B with organic matter, and between Ni and Zn withpH, suggest that the dynamics of these metals are strongly influenced by these soil attributes,affecting their availability and retention. The results obtained may support decision-makingregarding the management and recovery of degraded areas in semi-arid regions susceptible todesertification. Tipo: Dissertação Wed, 01 Jan 2025 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/86435 2025-01-01T00:00:00Z