Results 51 to 60 of about 708 (168)

Fluctuating asymmetry in spider‐hunting wasps as a possible indicator of stress in Brazilian Atlantic Forest landscapes Assimetria flutuante em vespas caçadoras de aranhas como possível indicador de estresse em paisagens da Mata Atlântica brasileira

Ecological Entomology, Volume 51, Issue 3, Page 558-569, June 2026.
Agricultural cover was positively associated with fluctuating asymmetry in Trypoxylon opacum, suggesting a possible increase in developmental instability in intensively managed landscapes. Wing size was positively related to forest cover and negatively related to agricultural cover, indicating that forested landscapes may promote larger body size ...
Luana Vieira Carlin dos Santos, Jean Pablo Alves de Deus, Milton Cezar Ribeiro, Maria Luisa Tunes Buschini   +3 more
wiley   +1 more source

Estudo fitossociológico nas regiões de Carajás e Marabá - Pará, Brasil [PDF]

Acta Amazonica, 1999
O estudo fitossociológico levou em consideração duas áreas localizadas em Carajás e Marabá, na região sul do Pará. A amostragem abordou dois níveis: 1) Indivíduos com DAP ≥ 20cm em parcelas de 20m x 200m e, II) Indivíduos com 5cm ≤ DAP ≤ 20cm em duas sub-
Ralfli João RIBEIRO, Niro HIGUCHI, Joaquim dos SANTOS, Celso Paulo de AZEVEDO   +3 more
doaj   +1 more source

Stemflow Dynamics in the Jamari National Forest (Brazilian Amazon): I. The Role of Tree Structure

Biotropica, Volume 58, Issue 3, May 2026.
A portion of rainfall that contacts tree canopies is drained down tree stems as stemflow. Stemflow is an underexamined component of rainfall partitioning in tropical forests. To investigate how tree canopy structural attributes influence stemflow in the Brazilian Amazon, we measured stemflow, rainfall, and dendrometric parameters of 56 trees in the ...
Jeferson Alberto de Lima, John Toland Van Stan II, Karolina Lewińska, Agnieszka Dradrach, Jakub Ceglarek, Kelly Cristina Tonello   +5 more
wiley   +1 more source

Floral trait similarity at the community‐level increases reproductive success suggesting facilitation through pollinator sharing

Oikos, Volume 2026, Issue 4, April 2026.
The ability of plants to attract pollinators is context‐dependent, influenced by floral traits, abundance, and resources from the plant community. Indirect interactions through shared pollinators, from competition to facilitation, may lead to varied reproductive outputs in plants, and the mechanisms behind these interactions remain to be fully ...
Marsal D. De Amorim, Pedro J. Bergamo, Elisa Thébault, Luís G. S. Perugini, Sabrina A. Lopes, André R. Rech, Pietro K. M. Maruyama   +6 more
wiley   +1 more source

Urban rendezvous: Spatiotemporal overlap is more important than abundance and trait matching for urban plant–pollinator interactions

Journal of Applied Ecology, Volume 63, Issue 1, January 2026.
Our study shows that the generalized structure of urban plant–pollinator interactions is mirrored in the mechanisms that shape them, as interactions are governed primarily by less restrictive drivers such as abundance and spatiotemporal overlap rather than by trait matching.
Victor H. D. Silva, Ingrid N. Gomes, Maximillian Hanusch, Sebastian O. Queroz, Carolina P. Procópio‐Santos, Teresa Mol Fonseca, João Carlos Pena, Rodrigo B. Gonçalves, Robert R. Junker, Pietro K. Maruyama   +9 more
wiley   +1 more source

The Miners of South America: Impacts of Climate Change on the Distribution of Geositta Miners Along Elevational Gradients

Biotropica, Volume 58, Issue 1, January 2026.
We modeled the current and future distributions of seven Geositta species along elevational gradients in South America under two climate change scenarios. Our results show that most species are projected to lose suitable habitats, particularly under the high‐emission scenario, with distinct responses between lowland and highland taxa.
Ricardo C. Meireles, Leonardo E. Lopes, Gustavo R. Brito, Ricardo Solar   +3 more
wiley   +1 more source

DYNAMICS OF THEManilkara huberi(DUCKE) A. CHEV. POPULATION DURING 26 YEARS AFTER LOGGING IN A TERRA FIRME FOREST IN THE BRAZILIAN AMAZONIA

Ciência Florestal, 2014
http://dx.doi.org/10.5902/1980509813333Changes in the structure of Manilkara huberi population in a 64 ha area at the Tapajos National Forest were evaluated in a 26-year period after logging. Data were obtained in 36 50m x 50m permanent sample plots that
Tatiana da Cunha Castro, João Olegário Pereira de Carvalho   +1 more
doaj   +1 more source

Temporal Changes in Land Use Highlight the Vulnerability of Highland Grasslands in Protected Areas in Southern Brazil

Biotropica, Volume 58, Issue 1, January 2026.
Subtropical Highland Grasslands showed greater net conversion than Mixed Ombrophilous Forest across our study PAs. In one PA created to conserve Highland Grasslands, net grassland loss inside the PA exceeded loss in adjacent buffer zones during the study period.
Ricardo Jerozolimski, Mário M. Tagliari, José R. R. Campos   +2 more
wiley   +1 more source

Diversidade em uma área verde urbana: avaliação qualitativa da arborização do campus da Universidade Federal do Acre, Brasil.

Agro@mbiente On-line, 2014
A arborização urbana atua sobre o conforto no ambiente e proporciona melhores condições de vida ao homem nas cidades. Diante disso, objetivou-se com este trabalho realizar o diagnóstico qualitativo da arborização do campus da Universidade Federal do ...
Álisson Sobrinho Maranho, Sheilly Raquelly Prado de Paula   +1 more
doaj   +1 more source

Estimativas volumétricas para plano de manejo florestal na Amazônia Oriental

Nature and Conservation, 2020
Este estudo teve como objetivo ajustar modelos matemáticos para determinação de estimativa volumétrica para todas as espécies comerciais para área de manejo florestal no município de Placa, estado do Pará, Brasil. Para o ajuste foram selecionadas 235 árvores, distribuídas entre 14 das 17 espécies de valor comercial autorizadas para corte na Unidade de ...
Diego Ribeiro de Aguiar, Marcos Leandro Garcia   +1 more
openaire   +2 more sources