Aldair de Souza Medeiros

Early pre-emergence control of Spermacoce sp. in soybean fields

Sabrina Nascimento Teixeira, Edmilson Igor Bernardo Almeida, Lourrana Rhavenna Diogo Silva, Andreza Maciel de Sousa et autres

The buttonweed (Spermacoce sp.) management is currently one of the main soybean yield gaps in Brazil. As it is a glyphosate-tolerant weed the adoption of early control practices are very important. Given this, the objective this study was to evaluate the performance …

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Nutrient dynamics in the organic cacao agroforestry systems in the eastern Brazilian Amazon

Taoramoio Neto Cicreta, Maria de Lourdes Pinheiro Ruivo, Michelliny Pinheiro Matos Bentes, Aldair de Souza Medeiros et autres

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Environmental Drivers and Biogeographic Patterns of South American Endemic Ants: Insights From IUCN Red List Assessments

Facundo Alvarez, Lívia Pires do Prado, Joudellys Andrade‐Silva, Fabrício Beggiato Baccaro et autres

ABSTRACT Aim South American endemic ants play a central role in terrestrial ecosystems but remain poorly integrated into continent‐scale conservation assessments. Their distributions and community composition have likely been shaped by past climatic dynamics and persistent refugia. Here, we evaluate how historical …

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Computer vision-based assessment of pig thermal comfort under cooling systems in semiarid conditions

Marcos Vinícius da Silva, Héliton Pandorfi, Gledson Luiz Pontes de Almeida, Nicoly Farias Gomes et autres

Climate variability and high ambient temperatures in semi-arid regions pose significant challenges to maintaining animal welfare in intensive pig farming systems. Effective monitoring of thermal comfort and behavior is essential for improving productivity and health. This study aimed to evaluate the behavioral …

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Hyperdominant Trees Reveal Savanna Vulnerability Under Climate Change

Facundo Alvarez, Ben Hur Marimon-Junior, Beatriz Schwantes Marimon, Wesley Jonatar Alves da Cruz et autres

ABSTRACT The Cerrado biome, spanning ~2 million km 2 , is one of the most extensive and biodiverse tropical savannas, yet it is paradoxically dominated by only 30 hyperdominant tree species (~2% of all species, > 50% of all stems). However, their …

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Spatiotemporal analysis of precipitation, vegetation cover, fire foci and burned areas in a dairy basin in Northeastern Brazil

Maria Vitória Neves de Melo, Gledson Luiz Pontes de Almeida, Héliton Pandorfi, Maria Beatriz Ferreira et autres

Drought events combined with anthropogenic factors (e.g., agricultural activity) intensify the susceptibility of the Caatinga biome to wildfires and environmental degradation, and also directly affect local biodiversity, the natural properties of the soil, and, consequently, the natural water supply. Because remote sensing …

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NEW RECORDS OF THE OCCURRENCE OF TWO SPECIES OF ANTS (HYMENOPTERA: FORMICIDAE) AND SOIL ATTRIBUTES IN MARANHÃO (BRAZIL)

Glécio Machado Siqueira, Guilherme Ferreira Domingues, Facundo Alvarez, Bruno de Souza Barreto et autres

Ants play a fundamental role in soil ecological processes, as they occupy different ecological niches and have different functionalities in the soil-plant system. Thus, the objective of this work is to describe the occurrence record of Formicides in three distinct areas, one …

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Different land uses in the Brazilian semi-arid: impacts and drivers on organic matter fractions and soil carbon

Aldair de Souza Medeiros, Marcella Leal Santos, Ademir Fontana, Fabiano de Carvalho Balieiro et autres

The Caatinga biome, Brazil, is an semi-arid zone with climatic and socioeconomic vulnerability, which makes the soils more susceptible to degradation under cultivation and management conditions that hinder the maintenance of soil organic matter (SOM). In this sense, the objective of the …

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Biomassa microbiana como bioindicador da qualidade do solo em agroflorestas cacaueiras e vegetações secundárias na Amazônia brasileira

Taoramoio Neto Cicreta, Maria de Lourdes Pinheiro Ruivo, Michelliny Pinheiro de Matos Bentes, Aldair de Souza Medeiros et autres

Os Sistemas Agroflorestais com Cacau (SFACs) e vegetações secundárias (VS) amazônicas desempenham papel crucial na recuperação de solos degradados por meio da biomassa microbiana do solo (BMS), que regula a ciclagem de nutrientes e a qualidade biológica. O objetivo foi avaliar a …

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Geoestatística integrada a estatística multivariada de atributos químicos do solo e produtividade da cana-de açúcar

Edvander Prudente de Almeida, Thiago Cândido dos Santos, Guilherme Domingues Ferreira, Antonio Carlos Carneiro dos Santos Sobrinho et autres

O objetivo com este trabalho foi caracterizar a variabilidade espacial de atributos químicos do solo e produtividade de cana-de-açúcar por meio da integração de ferramentas de geoestatística e de estatística multivariada. O estudo foi realizado na Usina Itajubara, no município de Coelho …

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Desempenho de bioestimulante de algas marinhas Macrocystis sp. no crescimento e em componentes de produção da soja

Francisco Neto dos Santos, Edmilson Igor Bernardo Almeida, Aldair de Souza Medeiros, Andreza Maciel de Sousa et autres

The soybean crop is an activity of significant socioeconomical importance for Brazil; however, the intensification of agricultural practices to increase productivity can lead to the excessive use of concentrated fertilizers and synthetic agrochemicals, which cause negative environmental impacts. The use of alternative …

Economic valuation of soil organic carbon stock in the Amazon Forest-Cerrado transition, Brazil1

Thiago Cândido dos Santos, Facundo Alvarez, Andreza Maciel de Sousa, Marcos Vinícius da Silva et autres

ABSTRACT The average annual deforestation rate in the Amazon Forest-Cerrado transition zone is approximately 2,098.08 km2, restricting numerous ecosystem services. There is a pressing need to develop policies to reduce greenhouse gas emissions in the region. The objective of this study was …

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