Results 81 to 90 of about 63,538 (224)

Novos registros de carrapatos (Acari: Ixodidae) infestando aves silvestres em um fragmento florestal no Acre, Amazônia Brasileira

Semina: Ciências Agrárias, 2020
O objetivo desse estudo foi ampliar o conhecimento sobre o parasitismo de carrapatos em aves silvestres na Amazônia Ocidental e fornecer registros adicionais de espécies de aves parasitadas por carrapatos no Estado do Acre.
Vanessa Lima de Souza, Thiago Fernandes Martins, Edson Guilherme, Francisco Glauco de Araújo Santos   +3 more
doaj   +1 more source

Interpretação fenológica de cinco espécies de Chrysobalanaceae na reserva florestal Adolpho Ducke, Manaus, Amazonas, Brasil [PDF]

Acta Amazonica, 1999
Este estudo foi desenvolvido na Reserva Florestal Adolpho Ducke, ao norte de Manaus. Analisaram-se dados de observações fenológicas sobre cinco espécies da família Chrysobalanaceae, Licania heteromorpha L.
Jorge Elias Alván RUIZ, Jurandyr da Cruz ALENCAR   +1 more
doaj   +1 more source

The response of neotropical dragonflies (Insecta: Odonata) to local and regional abiotic factors in small streams of the Amazon [PDF]

, 2019
Since the relative role of local and regional abiotic factors on the Odonata diversity in rainforest streams is still poorly understood, we evaluated the effects of these factors on adult Odonata (Insecta) from preserved and altered streams in the ...
Belle, Bispo, Clarke, Corbet, De Marco, Garrison, Garrison, Hildrew, Huamantinco, Kikuchi, Legendre, Lencioni, Lencioni, May, McPeek, Oertli, Ribeiro, Ricklefs, Stenert, Swift, Tilman   +20 more
core   +1 more source

Preservative Ethanol From Stomach Contents Is a Reliable Proxy for Diet DNA Metabarcoding

Environmental DNA, Volume 8, Issue 3, May–June 2026.
We tested whether DNA metabarcoding of preservative ethanol can substitute bulk stomach contents for reconstructing diets. Using two ethanol DNA extraction methods (precipitation and drying), the resulting profiles showed minor differences relative to each other and to bulk contents in richness, composition, and read counts, mostly limited to low ...
Daniel A. Velarde‐Garcéz, Patrícia Guedes, Cátia Chaves, Joana Pinto, Tania Bird, Yodiney dos Santos, Marion Tafani, Maria da Conceição Afonso, Marquinha Martins, Ricardo Lima, Pedro Beja, Vanessa A. Mata   +11 more
wiley   +1 more source

Mapeamento da vegetação na floresta atlântica usando o classificador de árvore de decisão para integrar dados de sensoriamento remoto e modelo digital de terreno [PDF]

, 2008
O manejo e o monitoramento ecológico de parques nacionais e outras áreas protegidas requerem uma detalhada descrição do padrão de distribuição da vegetação.
Carvalho Júnior, Osmar Abílio de, Coelho, Marcus Alberto Nadruz, Couto Júnior, Antônio Felipe, Gomes, Roberto Arnaldo Trancoso, Martins, Éder de Souza, Oliveira, Sandro Nunes de, Santana, Otacílio Antunes   +6 more
core   +2 more sources

Landscape features predict broad‐scale seed rain patterns across fragments of the Brazilian Atlantic Forest

Journal of Ecology, Volume 114, Issue 5, May 2026.
Along with precipitation, forest cover emerges as a fundamental driver of alpha and beta diversity in the seed rain. This highlights the role of habitat amount at the landscape level over patch‐level features, like patch size, for seed dispersal. However, increased seed density can be related to higher dispersal rates in forest borders.
Luís Felipe Daibes, Haldre S. Rogers, Fulbert J. K. Gnonlonfoun, Talita Zupo, Rafael Barbizan Sühs, Daniella Vinha, Débora Cristina Rother, Paulo Alves Almeida Junior, Angela Luciana de Avila, José Marcos Barbosa, Romualdo Morelatto Begnini, Antonio Jorge Tourinho Braga, Marcos Vinicius Wincker Caldeira, Elivane Salete Capellesso, Andre Targa Cavassani, Eliana Cazetta, Ricardo Gomes Cesar, Marilena Menezes Silva Conde, Cléber Covre, Henrique Machado Dias, Pavel Dodonov, Rinaldo Luiz Caraciolo Ferreira, Cintia Gomes Freitas, Milena Gama, Gerhard Gottsberger, Flavia Moraes de Jesus, Carlos Alfredo Joly, Ute Christiane Knörr, Sustanis Horn Kunz, Vinícius Londe, Ana Lícia Patriota Feliciano Marangon, Luiz Carlos Marangon, Fabiana Maraschin‐Silva, Marcia C. M. Marques, Adriana Maria Zanforlin Martini, Valéria Forni Martins, Larissa Lopes Mellinger, Luís Fernando Tavares de Menezes, Sandra Bos Mikich, Luiz Fernando Duarte de Moraes, Marcelo Trindade Nascimento, Marcelo Augusto Meratti de Oliveira, Monique Perini, Julia Fleming Pimentel, Daniel Piotto, Rita de Cássia Quitete Portela, Janaine Isabela da Silva Rocha, Ricardo Ribeiro Rodrigues, Jerônimo Boelsums Barreto Sansevero, Amanda Souza dos Santos, Flavio Antonio Maës dos Santos, Jaqueline Pêgo Quintino Santos, Nelson Augusto Santos Junior, Tanise Luisa Sausen, Carlos Rodrigues da Silva, Joselane Príscila Gomes da Silva, Jorge Yoshio Tamashiro, Luiz Roberto Zamith, Leticia Bolian Zimback, Raquel Fernandes Zorzanelli, Victor Pereira Zwiener, Renato Augusto Ferreira de Lima, Luís Fábio Silveira, Marco Aurélio Pizo   +63 more
wiley   +1 more source

Large emissions from floodplain trees close the Amazon methane budget [PDF]

, 2017
Wetlands are the largest global source of atmospheric methane (CH4), a potent greenhouse gas. However, methane emission inventories from the Amazon floodplain, the largest natural geographic source of CH4 in the tropics, consistently underestimate the ...
A Siegenthaler, AA Bloom, AA Bloom, AH Devol, AJ Webb, Alex Enrich-Prast, B Ringeval, C Frankenberg, C Frankenberg, C Wilson, Cassia Mônica Sakuragui, D Bastviken, David Bastviken, Edward R. C. Hornibrook, EM Latrubesse, Emanuel Gloor, F Keppler, GO Martinson, H Rusch, H Schaefer, HO Sawakuchi, Humberto Marotta, JB Miller, JM Melack, John Bharat Miller, KB Bartlett, L Belger, LL Hess, LL Hess, LS Santiago, Luana S. Basso, Luana Silva Braucks Calazans, Luciana V. Gatti, Olaf Malm, R Fisher, Roberta Bittencourt Peixoto, RR Draxler, S Kirschke, S Pitz, SR Pangala, SR Pangala, SR Pangala, Sunitha R. Pangala, Veronika Beck, Vincent Gauci, Wanderley Rodrigues Bastos, ZP Wang   +46 more
core   +1 more source

Filtração de partículas através do dossel de uma floresta tropical úmida

Boletim do Museu Paraense Emílio Goeldi - Ciências Naturais, 2014
Understanding the dinamics of filtration of pollen and spores by plant canopies is crucial to the in the modelling of their dispersal, yet few studies have quantified filtration. Here, we examine the decline in the density of flour particles descending through a 40 m-tall tropical canopy on a windless day at Caxiuanã National Forest, Pará, Brazil ...
Peter Kevan, Jason Straka, David Greene, Gail MacInnis   +3 more
openaire   +2 more sources

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

Leptodactylus pentadactylus [PDF]

, 2012
Number of Pages: 48Integrative BiologyGeological ...
de Sá, Rafael O., Heyer, Miriiam Muedeking, Heyer, W. Ronald   +2 more
core   +1 more source