15 documents found, page 1 of 2
Methods for overcoming seed dormancy of Schizolobium parahyba var. Amazonicum
Dionisio, Luiz Fernandes Silva; Soares, Fabiano Lago; Milhomem, Camila de Almeida; Rodrigues, Richard Pinheiro; Lozano-Bardales, Ricardo ManuelSchizolobium parahyba var. amazonicum is a tree species of great commercial interest, however, its seeds present tegumentary dormancy. Thus, the objective of this work was to evaluate the efficiency of different scarification methods to suppress seeds dormancy of S. parahyba. The treatments consisted in the following scarification methods: Grain 400 mechanical sandpaper (Sandpaper); Water at 100°C for 1 minute ...
Pervasive gaps in Amazonian ecological research
Carvalho, Raquel L.; Resende, Angelica F.; Barlow, Jos; França, Filipe M.; Moura, Mario R.; Maciel, Rafaella; Alves-Martins, Fernanda; Shutt, JackBiodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain underst...
Comparing contemporary and lifetime rates of carbon accumulation from secondary...
Elias, Fernando; Ferreira, Joice; Resende, Angélica F.; Berenguer, Erika; França, Filipe; Smith, Charlotte C.; Schwartz, Gustavo; Nascimento, Rodrigo O.Made available in DSpace on 2022-04-28T19:50:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-03-15; Secondary forests (SFs) growing on previously cleared land could be a low-cost climate change mitigation strategy due to their potential to sequester CO2. However, given widespread changes in climate and land-use in the Amazon in the past 20 years, it is not clear whether current rates of carbon uptake ...
Floristics and ex situ germination of the soil seed bank under different light ...
Cordeiro, Iracema Maria; Lameira, Osmar Alves; Neves, Raphael Prado; Schwartz, GustavoSoil seed banks bring information about the current flora and allow future scenarios about plant communities. The objective of this work was to determine the percentage of ex situ germination of a seed bank under different levels of light. Sampling took place in primary a harvested primary forest under fallow in the municipality of Moju, Pará state, Brazil. Ten samples composed of four simple samples were colle...
Seedling quality of Agonandra brasiliensis in response to different Osmocote® d...
Mota, Eduardo Rodrigues; Smiderle, Oscar José; Dionisio, Luiz Fernandes Silva; Souza, Aline das Graças; Montenegro, Raiovane Araújo; Schwartz, GustavoThe objective of this work was to evaluate seedlings quality of the tree species Agonandra brasiliensis under different doses of the controlled release fertilizer (CRF) Osmocote® and recipient volumes. The experiment was set up in a factorial design for two recipient volumes (1.8 L and 2.2 L) and five CRF doses (0.0; 0.5; 1.0; 2.0; and 3.0 g L-1 of substrate). Four repetitions of one plant each were used. After...
Aerial entomofauna in Eucalyptus spp. in Southeast Pará, Brazil
Saliba, Ivy Laura; Lunz, Alexandre Mehl; Batista, Telma Fátima Vieira; Dionisio, Luiz Fernandes Silva; Machado, Helton Bastos; Schwartz, GustavoHomogeneous forest plantations are commonly attacked by biotic agents due to their lower biological diversity. This type of planting, especially of eucalyptus, was intensified in Southeast of the state of Pará, Brazil, from the 1990s onwards. Thus, the objective of this study was to prospect the diversity of aerial entomofauna, evaluate their responses to seasonality, and detect the occurrence of possible impor...
Taking the pulse of Earth's tropical forests using networks of highly distribut...
Blundo, Cecilia; Carilla, Julieta; Grau, Ricardo; Malizia, Agustina; Malizia, Lucio; Osinaga-Acosta, Oriana; Bird, Michael; Bradford, MattMade available in DSpace on 2021-06-25T11:16:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Agence Nationale Des Parcs Nationaux; Centre for International Forestry Research; Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS); David and Lucile Packard Foundation; European Space Agency; Leverhulme Trust; Gordon and Betty Moore Foundation; Fundação de Amparo à Pesquisa ...
Evidence for a stress hypothesis: hemiparasitism effect on the colonization of ...
Schwartz, Gustavo; Hanazaki, Natalia; Silva, Marivana B.; Izzo, Thiago Junqueira; Bejar, María E. P.; Mesquita, Mariana R.; Fernandes, G. WilsonPlantas estressadas geralmente são mais atacadas por insetos galhadores. Neste estudo investigamos a relação entre abundância populacional e a riqueza de espécies de insetos galhadores na árvore Alchornea castaneaefolia A. JUSS. (Euphorbiaceae), submetida ao estresse induzido pela hemiparasita Psittacanthus sp. (Loranthaceae) na Amazônia, Brasil. Galhos de A. castaneaefolia atacados pela hemiparasita foram mais...
EFEITOS DO CLIMA SOBRE O INCREMENTO DIAMÉTRICO DE PARICÁ (Schizolobium parahyba...
Cordeiro, Iracema Maria; Schwartz, Gustavo; Barros, Paulo LuizO entendimento das interações ambientais entre variáveis climáticas como precipitação, radiação fotossintéticamente ativa, temperatura e umidade relativa e espécies florestais possibilita o melhoramento do desempenho silvicultural. Neste trabalho, realizado na fazenda Tramontina, Pará, Brasil, foram avaliados os efeitos combinados destas variáveis climáticas sobre o incrementro diamétrico do Paricá (Schizolobiu...
Initial growth of curauá and paricá under the application of curauá’s vegetal e...
Cordeiro, Iracema Maria; Schwartz, Gustavo; Ferreira, Gracialda Costa; Lameira, Osmar AlvesThis study had the objective to test the effect of soil fertilization with curauá’s vegetal extract (Ananas erectifolius) over the growth of individuals of curauá and paricá (Schizolobium parahyba var. amazonicum) planted in consortium. The work was carried out in the experimental field of the company Tramontina Belém, municipality of Aurora do Pará, PA, Brazil. The experiment followed a fully randomized experi...