Results 61 to 70 of about 6,056 (182)

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

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

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

Fenologia de Cornops aquaticum (Orthoptera: Acrididae) associado a Eichhornia crassipes (Pontederiaceae) em um Lago de Várzea na Amazônia Central, Brasil Phenology of Cornops aquaticum (Orthoptera: Acrididae) associated with Eichhornia crassipes (Pontederiaceae) in a Floodplain Lake in Central Amazonia, Brazil

Revista de la Sociedad Entomológica Argentina, 2011
O gafanhoto Neotropical Cornops aquaticum (Bruner) vive associado às macrófitas da família Pontederiaceae da qual se alimenta. Nos lagos da Amazônia Central, Eichhornia crassipes (Mart.) Solms (mururé ou aguapé) é considerada a planta hospedeira de maior
Carlos Elias Braga, Ana Lúcia Nunes- Gutjahr, José Wellington de Morais, Joachim Adis   +3 more
doaj  

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

Cutting freedom down to size Liberté calibrée

Journal of the Royal Anthropological Institute, EarlyView.
Freedom, as a concept and a value, presents limited prospects for anthropological comparison. The study of enslavement, much neglected in attempts to develop an anthropology of freedom, shows that freedom has been imagined by the enslaved as the opposite of their condition only under particular circumstances.
Harri Englund
wiley   +1 more source

O TEAR INVESTIGATIVO E OS FIOS DISCURSIVOS DAS AMAZÔNIAS: UMA ANÁLISE AUTORAL DOS PROCESSOS INVESTIGATIVOS E FORMATIVOS

Colloquium Humanarum, 2019
O objetivo central dessa pesquisa é narrar o processo de constituição do ser pesquisador tendo como fio condutor as problematizações sobre a Amazônia que se pensa quando se assume a necessidade e importância de contemplar o que lhe é próprio, o que se ...
Caroline Barroncas de Oliveira, Mônica de Oliveira Costa   +1 more
doaj   +1 more source

Notes on the distribution and habitat use of marmosets (Callitrichidae: Mico) from south-central Amazonia. [PDF]

Primate Biol, 2023
Costa-Araújo R, Bergamasco G, Roos C, Farias IP, Hrbek T.   +4 more
europepmc   +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