Results 51 to 60 of about 2,541 (203)

Biochemical characterization of selected plant species from Brazilian Savannas [PDF]

Brazilian Archives of Biology and Technology, 2004
The aim of this work was to analyze and quantify the presence of antinutritional compounds such as lectins and trypsin-like inhibitors, polyphenols and tannins, and enzymatic activity of peroxidases and proteases in the seeds of Annona crassiflora Mart. (araticum), Hymenaea courbaril L. var. courbaril (jatobá), Plathymenia reticulata Benth. (vinhático),
Caramori, Samantha Salomão, Lima, Claudinei Sousa, Fernandes, Kátia Flávia   +2 more
openaire   +4 more sources

Heat and Cold Waves in Brazil: An ERA5‐Based Analysis of Trends and Seasonality (1980–2024)

International Journal of Climatology, EarlyView.
This study uses ERA5 reanalysis data to assess changes in extreme heat and cold events across Brazil from 1980 to 2024. Results reveal a sharp increase in heatwave frequency and a general decline in coldwave occurrences, though regional variations are substantial.
Alindomar Lacerda Silva, Scott Sheridan
wiley   +1 more source

Root volume dynamics reveal increasing stocks in Cerrado fragments in Southeastern Brazil

Forest Systems
Aim of study: We assessed root system volumes and their dynamics over intervals of up to 9 years in Cerrado (Brazilian savanna). Area of study: Southeastern Brazil.
Marcela C.N.S. Terra, Rafaela S. Carvalho, Natielle G. Cordeiro, Kelly M. G. Pereira, Talvane Coelho, Renato V. O. Castro, José M. de Mello   +6 more
doaj   +1 more source

Estimating Pasture Biomass and Canopy Height in Brazilian Savanna Using UAV Photogrammetry

Remote Sensing, 2019
The Brazilian territory contains approximately 160 million hectares of pastures, and it is necessary to develop techniques to automate their management and increase their production.
Juliana Batistoti, José Marcato Junior, Luís Ítavo, Edson Matsubara, Eva Gomes, Bianca Oliveira, Maurício Souza, Henrique Siqueira, Geison Salgado Filho, Thales Akiyama, Wesley Gonçalves, Veraldo Liesenberg, Jonathan Li, Alexandre Dias   +13 more
doaj   +1 more source

Brazilian cerrado species: wood characteristics

Bioscience Journal, 2020
The characterization of wood anatomy and proprieties can provide subsidies for rational use of tree species. Enables, oftentimes, the definition of technological potential of wood - and wood products -   through the assessment of quality information and
Mayara Cristina Gomes de Faria, Carlos de Melo e Silva Neto, Pedro Augusto Fonseca Lima, Matheus Peres Chagas, Mario Tomazello Filho, Carlos Roberto Sette Junior   +5 more
doaj   +3 more sources

Dry–Hot Compound Events Driving the 2024 Pantanal Wildfires

International Journal of Climatology, EarlyView.
Extreme wildfires in the Pantanal in 2024 were driven by a cascade of heatwaves, rainfall deficits and the absence of the annual flood pulse. These conditions dried soils and rivers, enhanced fuel accumulation and enabled early and intense fire outbreaks.
Liz B. C. Belém, Ronaldo Albuquerque, Leonardo F. Peres, Filippe L. M. Santos, Julia A. Rodrigues, Lucas S. Menezes, Patrícia S. Silva, Ricardo M. Trigo, Carlos C. DaCamara, Ana Russo, João Geirinhas, Geraldo A. Damasceno Junior, Fabio O. Roque, Ana M. B. Nunes, Renata Libonati   +14 more
wiley   +1 more source

Padrões de Chuva e de Evapotranspiração em Goiânia, GO

Revista Brasileira de Meteorologia
Resumo A chuva (P) e a evapotranspiração potencial (ETP) são variáveis climáticas relevantes para diferentes áreas do conhecimento, tais como: agricultura, manejo de bacias, previsões de tempo e drenagem urbana. O objetivo deste trabalho foi caracterizar
Derblai Casaroli, Tallyta Ramalho Rodrigues, Angélica Pires Batista Martins, Adão Wagner Pêgo Evangelista, José Alves Júnior   +4 more
doaj   +1 more source

Population structure, spatial distribution and phenology of Anacardium humile A. St.-Hil. (Anacardiaceae) in cerrado stricto sensu

Hoehnea, 2018
This study determined the size structure, spatial distribution, and phenology of individuals from a population of Anacardium humile A. St.-Hil. in a cerrado stricto sensu area. Four sample plots (100 × 100 m each) were randomly selected in the Quilombola
Diego Guimarães de Sousa, Hélida Ferreira da Cunha   +1 more
doaj   +1 more source

New distribution records and notes on the habitat of Magneuptychia flavofascia Zacca & Siewert, 2014 (Lepidoptera: Nymphalidae) [PDF]

Check List, 2015
The recently described butterfly Magneu­ptychia flavofascia was formerly known from only two localities in the Brazilian Cerrado savanna. Here, we report new distribution records, DNA barcode sequences, and information on the habitat, adult behavior and ...
Lucas Kaminski, Rafael Dell’Erba, Eduardo Barbosa, André Freitas   +3 more
doaj   +3 more sources

Biochar‐Induced Shifts in Fungal Community Structure and Their Association With Soil Physical Properties in Degraded Soil From the Brazilian Semiarid

Land Degradation &Development, EarlyView.
ABSTRACT Soil degradation compromises ecosystem functioning. Biochar, a carbon‐rich amendment, has gained attention as a promising strategy to enhance soil structure and restore microbial balance. This study investigated the effects of two biochars, cashew bagasse biochar (CBB) and a co‐pyrolyzed biochar produced from sewage sludge and cashew pruning ...
João Marcos Rodrigues dos Santos, Arthur Prudêncio de Araujo Pereira, Kaio Gráculo Vieira Garcia, Ícaro Vasconcelos do Nascimento, Francisco Luan Almeida Barbosa, Tiago da Costa Dantas Moniz, Gilvanete da Silva Henrique, Murilo de Sousa Almeida, Vania Maria Maciel Melo, Mirian Cristina Gomes Costa, Helon Hébano de Freitas Sousa, Adriana Guirado Artur, Christiana de Fátima Bruce da Silva, Odair Pastor Ferreira, Antônio Gomes de Souza Filho, Erika Valente de Medeiros, Ademir Sergio Ferreira Araujo, Rafael Santiago da Costa, Jaedson Cláudio Anunciato Mota   +18 more
wiley   +1 more source