Results 41 to 50 of about 106,383 (226)

VOLATILIZAÇÃO DE NITROGÊNIO APLICADO EM MILHO CULTIVADO NA AMAZÔNIA MERIDIONAL

Holos, 2021
O nitrogênio é um dos nutrientes mais limitantes para o desenvolvimento e produtividade de plantas de milho. Isso gera a necessidade de se buscar fontes de N de elevada eficiência, uma vez que, uma das principais problemáticas de sua utilização são as ...
Mateus Eduardo Escola, Lara Caroline Alves de Oliveira, Eslaine Camicheli Lopes, Marco Antonio Camillo de Carvalho, Oscar Mitsuo Yamashita   +4 more
doaj   +1 more source

Impactos do Programa Bolsa Floresta: uma avaliação preliminar (Cadernos de Sustentabilidade) [PDF]

, 2014
Este estudo trata do Programa Bolsa Floresta (PBF), um dos maiores programas de Pagamento por Serviços Ambientais (PSA) do mundo, com mais de 35 mil pessoas atendidas em 15 Unidades de Conservação Estaduais (UCs) do Amazonas.
Afrânio Soares, João Tezza, Suelen Marostica, Valcéia Solidade, Victor Salviati, Virgílio Viana   +5 more
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The Flooding Gradient Affects Seed Dispersal by Fruit‐Eating Fishes in Amazonian Whitewater Floodplain Forests

Biotropica, Volume 58, Issue 3, May 2026.
This research approaches the interaction between frugivorous fish and the flooded forests in the central Amazon. We evaluated the fruit consumption by fish and the seed dispersal potential along the flood gradient. We tested the hypothesis that the role of fish as seed dispersers varies between low várzea (LV) and high várzea (HV) forests.
Gilvan Costa, Sandra Bibiana Correa, Florian Wittmann, Jochen Schöngart, Maria Teresa Fernandez Piedade, Efrem Jorge Ferreira, Leonardo Maltchik   +6 more
wiley   +1 more source

Aplicação do modelo agrometeológico espectral SAFER e imagens Rapid Eye na FLONA Tapajós. [PDF]

, 2015
O objetivo deste estudo foi utilizar os dados de estação meteorológica e imagens de satélite com alta resolução espacial para analisar os parâmetros biofísicos da Floresta Nacional do Tapajós (Flona) e ...
ANDRADE, R. G., ARAUJO, L. S. de, LEIVAS, J. F., NOGUEIRA, S. F., SILVA, G. B. S. da, TEIXEIRA, A. H. de C.   +5 more
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A New Global Climatological Model of the Equatorial Ionospheric Vertical E × B Drift: Integrating Ground‐Based Magnetometer, Radar, and Satellite Data Sets

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract We present a new empirical vertical E×B $\mathbf{E}\times \mathbf{B}$ drift model developed using ground‐based magnetometer, radar, and satellite data over equatorial latitude regions. We first implement an algorithm relating magnetometer derived equatorial electrojet (EEJ) and vertical ion plasma drift (equivalent to vertical E×B $\mathbf{E ...
John Bosco Habarulema, Daniel Okoh, Endawoke Yizengaw, Valence Habyarimana, Michael Pezzopane, Paulo Roberto Fagundes, Zama Katamzi‐Joseph, Mark B. Moldwin, Claudio Cesaroni, Danny Scipion   +9 more
wiley   +1 more source

Mammal Responses to Habitat Degradation Induced by Cashew Expansion in West Africa

Animal Conservation, Volume 29, Issue 2, Page 169-182, April 2026.
Relationships between (a) estimated mammal species richness, (b) overall mammal species photographic rate, (c) carnivore photographic rate, (d) insectivore photographic rate, (e) omnivore photographic rate and (f) herbivore photographic rate and the local habitat characteristics as denoted by the scores of the first component of the Principal Component
Daniel Na Mone, Isnaba Nhassé, João Soares, Raquel de Oliveira, Manuel Lopes‐Lima, Luís Palma, Ana Filipa Palmeirim   +6 more
wiley   +1 more source

Composição florística e estrutura de floresta em várzea alta estuarina amazônica. [PDF]

, 2019
O presente estudo foi desenvolvido objetivando avaliar a composição florística e a estrutura de floresta de várzea alta do estuário amazônico. Uma parcela amostral de 1,0 ha, divida em subparcelas de 20 x 50 m, foi instalada no Bailique/AP, furo do ...
GALVÃO, F., MACHADO, S. do A., MOCHIUTTI, S., QUEIROZ, J. A. L. de   +3 more
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Abiotic drivers of co‐occurrence and diversity patterns of Calopterygidae species in Amazonian protected freshwaters

Ecological Entomology, Volume 51, Issue 2, Page 235-249, April 2026.
Species co‐occurrences rely on their ability to explore similar or distinct available resources, and possible niche overlap can prevent their presence and establishment in a given site Damselflies of the Calopterygidae family demonstrated negative co‐occurrences in streams inside and outside PAs, highlighting that their ecological similarity is ...
Joás Silva Brito, Everton Cruz Silva, Gabriel Martins Cruz, Victor Rennan Santos Ferreira, Rafael Costa Bastos, Josinete Sampaio Monteles, Cristian Camilo Mendoza‐Penagos, Fernando Geraldo Carvalho, José Max Barbosa Oliveira‐Junior, Karina Dias‐Silva, Thaisa Sala Michelan, Luciano Fogaça de Assis Montag, Lilian Casatti, Leandro Juen   +13 more
wiley   +1 more source

Defining Habitat Use by the Parabiotic Ants Camponotus femoratus (Fabricius, 1804) and Crematogaster levior Longino, 2003

Sociobiology, 2017
Ant-garden ants have a strong relationship with epiphytes that need light to grow, for these reason, it has been previously documented in forest gaps. Moreover, larger gaps have more available area for nesting and habitats for use as forage.
Ricardo Eduardo Vicente, Thiago Junqueira Izzo   +1 more
doaj   +1 more source

Passiflora cristalina and Passiflora miniata: meiotic characterization of two wild species for use in breeding [PDF]

Crop Breeding and Applied Biotechnology, 2017
Passiflora cristalina and Passiflora miniata are two new wild species found in the southern Amazon region. This study aimed to analyze the meiotic behavior of the two species, by meiotic analysis, meiotic index and pollen grain viability, using routine ...
Telma Nair Santana Pereira, Ingrid Gaspar da Costa Geronimo, Ana Aparecida Bandini Rossi, Messias Gonzaga Pereira   +3 more
doaj   +1 more source