Results 61 to 70 of about 93,375 (278)

Cyclocephala amazona

open access: yes, 2019
Cyclocephala amazona (Linnaeus, 1767) Scarabaeus amazonus Linnaeus 1767: 551 Note. Two presently recognized subspecies of Cyclocephala amazona have been described, one of which occurs in the research area. The other one is C. amazona boliviensis Höhne, 1923 (recorded from Brazil, Bolivia) Subspecies Cyclocephala amazona amazona (Linnaeus, 1767 ...
Hielkema, Auke J., Hielkema, Meindert A.
openaire   +1 more source

Three‐Year Propagation Experiment at Ku‐, Ka‐, and Q‐Band in French West Indies

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT From January 2021 to December 2023, the Office National d'Etudes et de Recherches Aérospatiales (ONERA) and the Centre National d'Etudes Spatiales (CNES) conducted a three‐year Earth‐space propagation measurement campaign in Guadeloupe. The experiment used beacon receivers deployed in Pointe‐à‐Pitre airport to record signals at 11.2, 19.7, and
Jean‐Pascal Monvoisin   +3 more
wiley   +1 more source

UNIVERSIDADE FEDERAL DO AMAZONAS (UFAM): INOVAÇÃO E GESTÃO DO CONHECIMENTO NA REGIÃO NORTE DO BRASIL [PDF]

open access: yes, 2013
O presente artigo científico tem por objetivo investigar o processo de inovação e gestão conhecimento na Região Norte do País, tendo por eixo orientador a coleta, análise e estudo de caso a Universidade Federal do Amazonas.
Mafra, Marluce   +4 more
core  

Amazona pretrei

open access: yes, 2018
Published as part of Somenzari, Marina, Amaral, Priscilla Prudente do, Cueto, Víctor R., Guaraldo, André de Camargo, Jahn, Alex E., Lima, Diego Mendes, Lima, Pedro Cerqueira, Lugarini, Camile, Machado, Caio Graco, Martinez, Jaime, Nascimento, João Luiz Xavier do, Pacheco, José Fernando, Paludo, Danielle, Prestes, Nêmora Pauletti, Serafini, Patrícia ...
Somenzari, Marina   +20 more
openaire   +2 more sources

Illegal Gold Mining in the Brazilian Amazon: Environmental Degradation in Yanomami Indigenous Lands, and Regulatory Failures

open access: yesSustainable Development, EarlyView.
ABSTRACT Illegal gold mining has emerged as a major sustainability threat in the Amazon, eroding Indigenous rights, forest integrity, and climate mitigation efforts. This study examines how international market incentives relate to the expansion of illegal mining and associated deforestation within the Yanomami Indigenous Territory (YIT) from 2008 to ...
Shirléia Lago Santos   +2 more
wiley   +1 more source

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

open access: yesJournal 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   +10 more
wiley   +1 more source

The Economic and Ecological Impact of Soy in Brazil: A Synthetic Control Method Approach

open access: yesJournal of Agricultural Economics, EarlyView.
ABSTRACT In recent decades, soy expansion in Brazil has generated significant environmental, social and economic impacts. However, there is no consensus about benefits and drawbacks, calling for a more careful account of the economic and ecological diversity of the territories where this phenomenon has been unfolding.
Stefano Ghinoi   +3 more
wiley   +1 more source

Geometric Morphometrics Reveal Body Shape Variation in Freshwater Shrimps of the Genus Macrobrachium Lacking a Mandibular Palp (Formerly Pseudopalaemon Sollaud, 1911) (Decapoda: Palaemonidae)

open access: yesActa Zoologica, EarlyView.
ABSTRACT Shape variation in the cephalothorax of Macrobrachium species without mandibular palp using geometric morphometrics was used as a tool to support species differentiation and propose new diagnostic characters for taxonomic identification.
Thaís Arrais Mota   +4 more
wiley   +1 more source

Carayurú - Comunidad de Bellavista (Río Tiquié -Vaupés)

open access: yes, 2019
Documentar la transmisión intergeneracional de la elaboración del carayurú entre las mujeres y niñas de la comunidad de Bellavista en el Vaupés. La sabedora explica los momentos para realizarlo y a quiénes puede transmitirles ese conocimiento.El Carayurú
Fundación GAIA AMAZONAS
core  

O plano de defesa da borracha: entre o desenvolvimentismo e a negligência política ao Norte do Brasil, 1900-1915

open access: yesAmérica Latina en la Historia Económica, 2013
O presente artigo volta-se ao estudo do Plano de Defesa da Borracha instituído pelo governo federal em 1912, como plano de desenvolvimento regional para recuperação econômica da Amazônia.
Orange Matos Feitosa   +1 more
doaj   +1 more source

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