Probabilidades De Ocorrência De Chuvas Para O Estado Da Paraíba (Probability of Rain Occurrence for the State of Paraíba)

Francisco, Paulo Roberto Megna; Medeiros, Raimundo Mainar de; Melo, Valneli da Silva; Santos, Djail

doi:10.5380/abclima.v17i0.41883

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…The study was conducted in the municipality of Bananeiras, located in the Agreste mesoregion of Paraíba, characterized as a transitional ecotone between Caatinga and Atlantic Forest, at 6°46' S and 35°38' W, and 552 m of altitude. It has temperatures of 18 to 27 °C and average rainfall of 1200 to 1500 mm, with rainfall from fall to winter (concentrated in May to August) (Francisco et al, 2018). The evaluation of CO 2 release and soil temperature was conducted at the Center of Social Human and Agrarian Sciences (CCHSA) of the Federal University of Paraíba (UFPB), Campus III, Bananeiras -PB, in four different environments (Figure 1): Forest (FO): presenting a transitional environment between the Caatinga and Atlantic Rainforest biomes; this ecosystem is characterized by large and medium sized trees such as Angico (Anadenanthera macrocarpa (Benth.)…”

Section: Methodsmentioning

confidence: 99%

Comparison of Carbon Dioxide Efflux in Different Land Use Typologies

Lira Vital,

Barbosa,

Gomes

et al. 2023

Rev. Agric. Neotrop.

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Management systems are crucial for soils functioning as a drain or source of greenhouse gas emissions. In this sense, among the alternatives for reducing the precursors of the greenhouse effect are integrated agricultural production systems, particularly Agroforestry Systems. These integrated systems maximize the use of biological cycles, soil, and animal waste, reducing agrochemicals and improving the condition of the rural populations involved. The present study aimed to evaluate the CO2 efflux in different land use types. The study was conducted in four agroecosystems: Forest (FO), Agroforestry Systems (AFS), Mandala (MD), and Degraded area (DA). To quantify the CO2 emanating from the soil, 10 mL of 0.5 N KOH aqueous solution is used and titrated using 0.1 N HCl, phenolphthalein, and 1% methyl orange as an indicator. The CO2 concentration from 5:00 am to 5:00 pm was lower. The lowest CO2 production occurred in FO (82.7 CO2 mg m-2 h-1), statistically differing from the other areas that obtained a CO2 rate higher than 140 mg m-2 h-1. As for kinetics, it was observed in all areas that the greatest release of CO2 during the day occurred at 7:00 am, and this release decreased as the soil temperature increased. The greatest release of CO2 and the highest temperatures occurred in DA, showing that these systems with anthropic modifications can be considered CO2 emitters however, systems closer to the natural ecosystem, such as the AFS, will store carbon in the soil, functioning as a carbon store. Therefore, to reduce CO2 emissions from agricultural activities, it is necessary to use systems that imitate natural ecosystems.

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Section: Methodsmentioning

confidence: 99%

Comparison of Carbon Dioxide Efflux in Different Land Use Typologies

Lira Vital,

Barbosa,

Gomes

et al. 2023

Rev. Agric. Neotrop.

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“…The study was conducted in the municipality of Mogeiro, where the Novo Mundo settlement is located, having approximately 40 family aquicultors. Mogeiro (Latitude: 07°17' S; Longitude: 35°28' W; Average altitude: 117 m; according to Francisco, Medeiros, & Santos, 2018) is part of the Brazilian Semiarid and is in the Agreste mesoregion of the state of Paraíba (Northeast of Brazil), microregion of Itabaiana, with a population of approximately 13,300 inhabitants (Instituto Brasileiro de Geografia e Estatística [IBGE], 2020), 110 km away from João Pessoa, the capital city of the state. Mogeiro's climate is hot and humid tropical (Koppen: As), according to Francisco and Santos (2017).…”

Section: Methodsmentioning

confidence: 99%

Water parameters correlated with the zootechnical performance of shrimp Litopenaeus vannamei grown in oligohaline waters

Cavalheiro

Carvajal

Lucena

et al. 2022

Acta Sci. Anim. Sci.

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The present study aimed to correlate the influence of water quality, cultivation time, area, and density of ponds on the zootechnical performance of shrimp Litopenaeus vannamei in oligohaline waters. It was demonstrated that, under the conditions of this research, better control of temperature, pH and water alkalinity can be employed. Ammonia levels were within the normal range and correlated positively with the growth rate (ρ = 0.69859) and production (ρ = 0.66362) of the ponds. There was also a positive correlation between cultivation time and pond density with shrimp weight (ρ = 0.75305 and 0.68933) and pond productivity (ρ = 0.74763 and 0.79367, respectively). Negative correlations were observed between: I) pH with shrimp survival (ρ = -0.73238) and pond production (ρ = -0.68696); II) alkalinity and pond production (ρ = -0.66162). The results show that the cultivation of shrimp L. vannamei in oligohaline waters is viable and there is potential for increased productivity associated with better hydrological monitoring and use of higher density and cultivation time by some producers.

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“…Table 2 contains the estimated values of rainfall intensity (mm h -1 ), based on duration and return period, for Cruzeiro do Sul (CZS), Tarauacá (TRK), and Rio Branco (RBR). Francisco et al (2015) emphasized that estimating probable precipitation values is critical for decision-making in several key areas, especially regarding the design of projects to mitigate the impacts associated with extreme hydrological events. It is important to note that the region under study is subject to changes in its weather patterns that, consequently, can change the rainfall pattern.…”

Section: /8mentioning

confidence: 99%

Heavy rainfall events in the state of Acre, western Amazonia

Moreira,

Almeida,

Silva

et al. 2024

Rev. bras. eng. agríc. ambient.

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Preventing the occurrence of extreme hydrological events exceeds the current abilities of humanity. However, using adequate tools to estimate the probability associated with different values of hydrological variables, such as heavy rainfall, can help mitigate social and environmental damage. This study aimed to verify the hypothesis that the records of maximum rainfall, at different intervals of duration, in the three main rainfall stations in the state of Acre fit the log-normal distribution of two parameters (LN2) and, therefore, to evaluate the events of heavy rainfalls, based on the association between the duration of the rain and the return period. The equations conformed to the classic model of the LN2 model using the method of maximum likelihood once the baseline assumption of stationarity was met using the Mann-Kendall test. Adherence to the model was verified using the Anderson-Darling test. The adjusted distributions allowed for estimating the rainfall intensity at different durations and return periods for the cities of Cruzeiro do Sul, Tarauacá, and Rio Branco and are relevant elements for planning actions aimed at strengthening the components of water safety in the state of Acre.

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Probabilidades De Ocorrência De Chuvas Para O Estado Da Paraíba (Probability of Rain Occurrence for the State of Paraíba)

Cited by 4 publications

References 1 publication

Comparison of Carbon Dioxide Efflux in Different Land Use Typologies

Comparison of Carbon Dioxide Efflux in Different Land Use Typologies

Water parameters correlated with the zootechnical performance of shrimp Litopenaeus vannamei grown in oligohaline waters

Heavy rainfall events in the state of Acre, western Amazonia

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