Results 41 to 50 of about 874 (172)

Queimadas em áreas do Cerrado brasileiro

Revista Ibero-Americana de Ciências Ambientais, 2020
As queimadas têm causado prejuízos aos elementos da paisagem, destruição da fauna e flora, além da deterioração da fertilidade do solo. O objetivo do presente trabalho é a detecção e quantificação de extensas áreas atingidas por eventos de queimadas através de sensores óticos, verificando a reincidência de queimadas em localidades do Cerrado a partir ...
Francisco Rubens Feitosa Júnior, Ranieldo Barreiras Barbosa Souza, Tâmara Andressa Pires Cedro, Rayan Araújo Valério, Edimar Souza Dias, José Yure Gomes dos Santos   +5 more
openaire   +2 more sources

Caracterização das queimadas acidentais em campo, no Município de Santa Maria-RS Characterization of accidental field burns in the county of Santa Maria - RS, Brazil

Ciência Rural, 2009
Neste trabalho o objetivo foi realizar um estudo de queimadas acidentais em campo, foi para identificar, caracterizar e localizar lugares de maior ocorrência dessas na cidade de Santa Maria-RS, com intuito de auxiliar no planejamento e controle de ...
Luciane Flores Jacobi, Alessandro Dal'Col Lúcio, Lindolfo Storck, Sidinei José Lopes, Alberto Cargnelutti Filho   +4 more
doaj   +1 more source

Ar‐Ar Dating of the Nephelinite‐to‐Basanite Transition at Etinde and Mount Cameroon (Cameroon Volcanic Line, West Africa) Provides Insights Into the Origin of Intraplate Magmatism

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.
Abstract Intraplate magmatism is widespread in continental and oceanic domains. Some occurrences, such as Hawai'i, fit the predictions of the mantle‐plume hypothesis well. However, many occurrences require alternative explanations. The Cameroon volcanic line (CVL) in West Africa is one of the most voluminous and long‐lived non‐plume intraplate magmatic
Sophie L. Baldwin, J. Godfrey Fitton, Linda A. Kirstein, Dan N. Barfod, M. Stephen Njome   +4 more
wiley   +1 more source

Impacts of fire on canopy structure and its resilience depend on successional stage in Amazonian secondary forests

Remote Sensing in Ecology and Conservation, Volume 11, Issue 4, Page 394-410, August 2025.
We analyzed the effects of fire on secondary forests' vertical structure in different successional stages using lidar metrics. Our results show that independently of the successional stage, secondary forests that experienced fire were more degraded than unburned secondary forest areas. Overall, our results show that forests in early successional stage (
Laura B. Vedovato, Luiz E. O. C. Aragão, Danilo R. A. Almeida, David C. Bartholomew, Mauro Assis, Ricardo Dalagnol, Eric B. Gorgens, Celso H. L. Silva‐Junior, Jean P. Ometto, Aline Pontes‐Lopes, Carlos A. Silva, Ruben Valbuena, Ted R. Feldpausch   +12 more
wiley   +1 more source

The Environmental Boom in the Media: An Analysis of the News on Deforestations and Forest Fires in the Amazon During the Last Decades

Desenvolvimento e Meio Ambiente, 2008
This article presents the conclusions of research (PARD/UFPA/CNPq, 2006) that analyzed the significantrole of the press in exposing environmental issues in the past decades (1975-2002), with emphasis ondeforestations and forest fires in the Amazon.
Luciana Miranda Costa
doaj   +1 more source

PADRÕES E TENDÊNCIAS ESPAÇO-TEMPORAIS DA OCORRÊNCIA DE QUEIMADAS NO CERRADO ENTRE 1999 E 2018

Boletim Goiano de Geografia, 2022
As queimadas são corriqueiramente empregadas no bioma Cerrado para renovação de pastagens e limpeza de terrenos agrícolas. Todavia, o seu uso também se encontra associado ao desmatamento e à implantação de atividades agropecuárias.
Maíra Iaê Savioli Rocha, Diego Tarley Ferreira Nascimento   +1 more
doaj   +1 more source

Fire Effects on Bird Communities From Seasonally Flooded Forests Along Amazonian Black Water Rivers of the Negro River Basin

Diversity and Distributions, Volume 31, Issue 5, May 2025.
ABSTRACT Aim Fire significantly contributes to Amazonian degradation, with igapó forests (seasonally flooded by blackwater rivers) being especially vulnerable. Igapó forests support species adapted to seasonal flooding, making fire a critical threat to these specialised organisms.
C. Valentim, J. M. G. Capurucho, P. E. D. Bobrowiec, G. A. Leite, G. M. Martins, J. Schöngart, C. C. Ribas   +6 more
wiley   +1 more source

Análise temporal dos focos de queimadas no município de Bom Jesus, Piauí

Diversitas Journal, 2023
Nos últimos anos, vem crescendo o número de ocorrência de queimadas e dos incêndios florestais em todas as regiões do Brasil. Objetivou avaliar a ocorrência dos focos de queimadas no município de Bom Jesus, estado do Piauí, entre os anos de 2016 a 2021.
Leovandes Soares da Silva
doaj  

Islanded Islands: Dual Isolation Drive Distinctive and Threatened Floras of Neotropical Maritime Inselbergs

Journal of Vegetation Science, Volume 36, Issue 3, May/June 2025.
ABSTRACT Questions Inselbergs, isolated rock outcrops, support unique plant communities. Maritime inselbergs (MIs) experience transient isolation due to maritime fluctuations, creating harsh survival conditions. This study is the first to investigate the plant communities' patterns on MIs, comparing them with those on continental inselbergs (CIs).
Gabriel Pavan Sabino, Fábio Pinheiro, Juliano Sarmento Cabral, Ingrid Koch, Gabriel Mendes Marcusso, Marília Manuppella Tavares, Ian Meireles Cunha, Vitor de Andrade Kamimura   +7 more
wiley   +1 more source

Comparative analysis of the nutritional, physicochemical, and bioactive characteristics of Artemisia abyssinica and Artemisia arborescens for the evaluation of their potential as ingredients in functional foods

Food Science &Nutrition, Volume 12, Issue 10, Page 8255-8279, October 2024.
The study found that Artemisia abyssinica has superior nutritional and functional qualities than Artemisia arborescens, including more fat, fiber, carbohydrate content, and energy. Artemisia abyssinica also has high water and oil absorption capacity, amino acid content, and amounts of sodium, calcium, organic acids, and vitamins. Despite A. arborescens'
Qais Ali Al‐Maqtari, Norzila Othman, Jalaleldeen Khaleel Mohammed, Amer Ali Mahdi, Waleed Al‐Ansi, Abeer Essam Noman, Adel Ali Saeed Al‐Gheethi, Syazwani Mohd Asharuddin   +7 more
wiley   +1 more source