Results 61 to 70 of about 18,693 (116)

Oxidative Stress Biomarkers in the Shrimp Macrobrachium amazonicum (Heller, 1862): Assessment in an Environmental Preservation Area in the Brazilian Amazon

Environmental Toxicology, EarlyView.
ABSTRACT Anthropogenic activities generate a significant amount of pollutants that are released into the environment, causing physiological and ecological disturbances. Among the xenobiotics present in aquatic ecosystems, numerous chemical and organic compounds have oxidative potential or are metabolized through oxidative processes, which may amplify ...
Natália Eduarda da Silva, Arllon José dos Santos Dias, Layane Vitoria dos Santos e Santos, Natalie de Matos Araujo, Darlan Coutinho dos Santos, Jefferson Romáryo Duarte da Luz, Gabriel Araujo‐Silva   +6 more
wiley   +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

Nimuendajú, a Senhorita Doutora e os ‘etnógrafos berlineses’: rede de conhecimento e espaços de circulaçâo na configuraçâo da etnologia alemâ na Amazônia no início do século XX

Asclepio: Revista de Historia de la Medicina y de la Ciencia, 2019
[pt] O artigo analisa a participação da zoóloga alemã Emília Snethlage (1868-1929), pesquisadora e depois diretora do Museu Goeldi, em Belém, Brasil, na rede de conhecimento que se estabeleceu no início do século XX na região amazônica, destinada à ...
Nelson Sanjad
doaj   +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

Aspectos do Espaço Tupinambá no Leste Amazônico

Revista de Arqueologia, 2008
Durante a análise dos sítios Cavalo Branco e Nova Ipixuna 3, no leste Amazônico, onde identifcou-se cerâmica Tupinambá3, começamos a comparar as semelhanças e diferenças referentes à indústria cerâmica, às dimensões e a densidade de material arqueológico
Fernando Ozório de Almeida, Lorena Gomes Garcia   +1 more
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

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

Species Distribution Models Reveal the Resilience of Protected Areas for Conserving an Endemic Amazonian Canid

Animal Conservation, EarlyView.
This graphical abstract illustrates the impacts of climate change on the distribution of the Amazon‐endemic canid Atelocynus microtis, highlighting projected habitat loss under future scenarios (SSP2–4.5 and SSP5–8.5). Despite substantial reductions in suitable habitat, a significant proportion remains within Protected Areas, emphasizing their critical
Isabella Soares Moura Palha da Silva, Camis Levi Ferreira Leão, Paola Vitoria Brito Pires, Marcela Guimarães Moreira Lima   +3 more
wiley   +1 more source

Changes in Family Production Systems upon the Implementation of Palm Oil in Eastern Amazon

Desenvolvimento e Meio Ambiente, 2017
In this article, we analyze the changes in family production systems throughout their productive paths, emphasizing the changes occurred due to the implementation of palm oil in these systems in Eastern Amazon.
Edfranklin Moreira da Silva, Lívia de Freitas Navegantes-Alves   +1 more
doaj   +1 more source

Hidden Losses: Assessing the Risk of Coextinction Among Ectoparasitic Flies and Their Bat Host Species in Brazil

Animal Conservation, EarlyView.
The potential impact of bat species extinction on the number of their ectoparasitic fly species, based on interaction data for Brazil. As bat host species are removed over time, more connected species (green) would experience steeper declines and lead to greater ectoparasite losses when compared to a random extinction model (gray).
Nathan Lorenzo de Sena Gotti, Jonathan Ramos Ribeiro, Eder Barbier, Enrico Bernard   +3 more
wiley   +1 more source