Results 51 to 60 of about 6,100 (186)

frontiermetrics: An R Package for Characterizing Deforestation Frontiers

Remote Sensing in Ecology and Conservation, EarlyView.
Deforestation frontiers are major drivers of biodiversity loss, carbon emissions, and ecosystem degradation, yet our understanding of how deforestation progresses in these frontiers is limited. We present frontiermetrics, an R package to quantify a range of metrics describing the speed, severity, and spatio‐temporal patterns of forest loss. The package
Pablo Yair Huais, Ana Buchadas, Eduardo Lacerda, Javier Nori, Matthias Baumann, Tobias Kuemmerle   +5 more
wiley   +1 more source

Cyanogenic Compounds, Physicochemical Parameters and Metals in Water From Cassava Processing Areas: A Study in the Brazilian Amazon, Using Multivariate Analysis

Environmental Toxicology, EarlyView.
ABSTRACT This study evaluated the water quality of artesian wells and effluents generated in cassava processing in a rural area of Bragança, Pará, with emphasis on physicochemical parameters, multielement composition, and cyanogenic compounds. The well water presented specific nonconformities, highlighting pH values below the recommended level and high
Alana Coêlho Maciel, Mariane Gama Nabiça, Luciana Pinheiro Santos, Thiago de Melo e Silva, Elivaldo Nunes Modesto Junior, Heronides Adonias Dantas Filho, Charles Miller de Souza Borges, Kelly das Graças Fernandes Dantas, Simone de Fátima Pinheiro Pereira, Ivan Carlos da Costa Barbosa, Beni Jequicene Mussengue Chaúque, Rosinelson da Silva Pena, Nayara Macêdo Peixoto Araújo, Alessandra Santos Lopes   +13 more
wiley   +1 more source

Filling a distribution gap: a new record of Pradosia ptychandra (Sapotaceae) from eastern Brazilian Amazonia [PDF]

Acta Amazonica
Based on fertile material collected in January 2019, we report the first record of Pradosia ptychandra (Sapotaceae, Chrysophylloideae) to the flora of Amapá state, eastern Brazilian Amazonia.
Caroline da Cruz VASCONCELOS, Luisa Maria DIELE-VIEGAS, José Luís Campana CAMARGO, Isolde Dorothea Kossmann FERRAZ, Mário Henrique TERRA-ARAUJO   +4 more
doaj   +1 more source

Ecotoxicological Assessment of Mercury in Fish From a Gold‐Mining‐Impacted Amazonian River: Biomonitoring and Human Health Risk

Environmental Toxicology, EarlyView.
ABSTRACT The Peixoto de Azevedo River, located in northern Mato Grosso, southern Brazilian Amazon, has a long history of artisanal and small‐scale gold mining (ASGM). This study evaluated total mercury (THg) concentrations in fish tissues to assess biomagnification and potential risks.
Augusto Cesar da Costa Castilho, Kleber Solera, Vinícius José Santos Lopes, Gleyce Alves Machado, Ricardo Lopes Tortorela de Andrade, Leandro Dênis Battirola   +5 more
wiley   +1 more source

Repeated trends in altitudinal gradients of diversity: How habitat filtering and biotic interactions structure ecological communities

Journal of Animal Ecology, EarlyView.
This study reveals that tropical butterfly communities show remarkably consistent elevational patterns of diversity and phylogenetic structure across regions with contrasting evolutionary histories, demonstrating how regional species pools and local ecological factors jointly shape biodiversity along altitudinal gradients.
Raphaël Fougeray, Arlety Roy, Christelle Penager, Guillaume Correa Pimpao, Ronald Mori Pezo, Léo‐Paul Charlet, Nino Page, Ombeline Sculfort, Stéphanie Gallusser, Marianne Elias, Melanie McClure   +10 more
wiley   +1 more source

Nematofauna of red piranha Pygocentrus nattereri (Kner, 1958) (Characiformes: Serrasalmidae) from Amazonia, Brazil

Revista Brasileira de Parasitologia Veterinária
Between March and October 2008, 355 specimens of Pygocentrus nattereri were collected from the lowland lakes of Central Amazonia, Brazil, to study their nematode fauna.
Aprígio Mota Morais, Melissa Querido Cárdenas, José Celso de Oliveira Malta   +2 more
doaj   +1 more source

A intervenção do ambientalismo internacional na Amazônia

Estudos Avançados, 2005
ENTRE 1989 e 2002, a Amazônia sofreu a intervenção do ambientalismo internacional. Permitida pelos governos brasileiros, essa intervenção, além do desejo de controle político, reflete as dificuldades dos povos industrializados em abandonar os princípios ...
Rosineide Bentes
doaj   +1 more source

Bat community assembly in the ecotone of two neotropical biodiversity hotspots is determined by environmental filtering rather than historical factors

Journal of Animal Ecology, EarlyView.
We demonstrate that environmental filtering is the primary mechanism shaping bat communities across the Cerrado–Atlantic Forest ecotone. By integrating phylogenetic diversity, environmental gradients, and coevolutionary assembly models, our study provides new insights into the processes maintaining biodiversity in a globally important transition zone ...
Daiana Cardoso Silva, Hernani F. M. Oliveira, Fabricius M. C. B. Domingos   +2 more
wiley   +1 more source

Determinação de Regiões Homogêneas do Índice de Precipitação Normalizada (SPI) na Amazônia Oriental

Revista Brasileira de Meteorologia
Resumo O presente estudo objetiva determinar Regiões homogêneas do SPI-6 na Amazônia Oriental e analisar as principais características dos eventos secos e chuvosos em cada região.
Sergio Rodrigo Quadros dos Santos, Célia Campos Braga, Clovis Angeli Sansigolo, Ana Paula Paes dos Santos   +3 more
doaj   +1 more source

The birth of an earth being: ‘Rights of nature’ in Brazilian Amazonia and elsewhere Naissance d'un être de la terre : « droits de la nature » en Amazonie brésilienne et ailleurs

Journal of the Royal Anthropological Institute, EarlyView.
In June 2023, the Laje River, located in the traditional territory of the Wari’ Indigenous people in Rondônia, Brazil, was declared a legal entity, an earth being, with rights, following the co‐ordinated action of an indigenous councillor and non‐indigenous activists.
Aparecida Vilaça
wiley   +1 more source