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	Provedor de dados Repositório Alice (10) Acta Botanica (3) Infoteca-e (1) Anais da ABC (AABC) (1) Autor CABRAL, L. (2) DANTAS, B. F. (2) DELFORNO, T. P. (2) FERNANDES JUNIOR, P. I. (2) GUARINO, E. de S. G. (2) LACERDA JÚNIOR, G. V. (2) MOURA, M. S. B. de (2) NORONHA, M. F. (2) OLIVEIRA. V. M. (2) SCARIOT, A. O. (2) SOUSA, S. T. P. de (2) AGUIAR, M. I. de (1) AIDAR, S. de T. (1) ALENCAR, S. de S. (1) AQUINO, A. C. M. M. (1) ARROYO, L. (1) Albuquerque,Ulysses Paulino (1) Araújo,Elcida de Lima (1) BAKER, T. R. (1) BANDA-R, K. (1) Mais... Palavra-chave Dry forests (15) Caatinga (7) Floresta seca (5) Floresta (4) Floresta Tropical (3) Semente (3) Biodiversidade (2) Bioma Caatinga (2) Bosques secos (2) Comunidades microbianas do solo (2) Ecossistema (2) Floresta Nativa (2) Floresta seca tropical (2) Metagenômica (2) Modelagem (2) Remote sensing (2) Sazonalidade (2) Solo (2) Uso da Terra (2) Vegetação (2) Mais... Tipo do documento Artigo de periódico (10) Info:eu-repo/semantics/article (4) Livro técnico (INFOTECA-E) (1) Ano 2022 (1) 2021 (3) 2020 (1) 2019 (5) 2017 (1) 2016 (2) 2014 (1) 2011 (1) Mais... País Brazil (15) Idioma Inglês (12) Português (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 15 Primeira ... 1 ... Última A phytosociological analysis and synopsis of the dry woodlands and succulent vegetation of the Peruvian Andes Anais da ABC (AABC) GALÁN-DE-MERA,ANTONIO; SÁNCHEZ-VEGA,ISIDORO; LINARES-PEREA,ELIANA; CAMPOS,JOSÉ; MONTOYA,JUAN; VICENTE-ORELLANA,JOSÉ A.. ABSTRACT A phytosociological approach to dry forest and cactus communities on the occidental slopes of the Peruvian Andes is presented in base of 164 plots carried out following the Braun-Blanquet method. From them, 52 have been made recently, and the other 112 were taken from the literature. After a multivariate analysis, using a hierarchical clustering and a detendred correspondence analysis, the Acacio-Prosopidetea class (dry forest and cactus communities, developed on soils with some edaphic humidity or precipitations derived from El Niño Current), the Opuntietea sphaericae class (cactus communities of central and southern Peru, on few stabilized rocky or sandy soils) and the Carico-Caesalpinietea class (dry forests of the Peruvian coastal desert,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Acacio-Prosopidetea; Cactus communities; Dry forests; Opuntietea sphaericae; Peru; Phytosociology.. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000200689 Biomass and vegetation index by remote sensing in different caatinga forest areas. Repositório Alice LUZ, L. R.; GIONGO, V.; SANTOS, A. M. dos; LOPES, R. J. de C.; LIMA JÚNIOR, C. de. Continued unsustainable exploitation of natural resources promotes environmental degradation and threatens the preservation of dry forests around the world. This situation exposes the fragility and the necessity to study landscape transformations. In addition, it is necessary to consider the biomass quantity and to establish strategies to monitor natural and anthropic disturbances. Thus, this research analyzed the relationship between vegetation index and the estimated biomass using allometric equations in different Brazilian caatinga forest areas from satellite images. This procedure is performed by estimating the biomass from 9 dry tropical forest fragments using allometric equations. Area delimitations were obtained from the Embrapa collection of... Tipo: Artigo de periódico Palavras-chave: Snsoriamento remoto; Florestas secas; Energia renovável; Modelagem; Vegetação; Vegetação Nativa; Caatinga; Floresta; Biomassa; Remote sensing; Dry forests; Renewable energy sources; Structural equation modeling; Biomass; Microbial biomass. Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1134527 Comparação de imagens multiespectrais utilizando Satélites e VANT para a análise de mudanças estruturais em área de Floresta Seca. Repositório Alice SANTOS, C. V. B. dos; MOURA, M. S. B. de; GALVÍNCIO, J. D.; CARVALHO, H. F. de S.; MIRANDA, R. de Q.; MONTENEGRO, S. M. G. L.. O sensoriamento remoto é uma ferramenta muito importante na aquisição de informações que permitem o monitoramento das características estruturais e de mudanças da vegetação nos biomas, e com o uso de índices espectrais de vegetação, é possível a análise de sua dinâmica ao longo do tempo. O presente estudo tem o objetivo de analisar a estrutura da cobertura vegetal em uma área do Bioma Caatinga comparando imagens multiespectrais adquiridas por satélite com diferentes resoluções e plataformas de veículos aéreos não tripulados (VANT) de baixa altitude e com câmeras em alta resolução. Foram realizados voos automatizados nos meses de novembro e dezembro de 2019 sobre a área de estudo e as imagens foram processadas para geração de orthomosaicos. Foram adquiridas... Tipo: Artigo de periódico Palavras-chave: Imagem de satélite; VANT; NDVI; Floresta Seca; Sensoriamento Remoto; Remote sensing; Dry forests. Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1144438 Conservation and physiological quality of Handroanthus spongiosus (Rizzini) S. Grose (Bignoniaceae) seeds. Repositório Alice SILVA, J. de J.; ALENCAR, S. de S.; GOMES, R. A.; MATIAS, J. R.; PELACANI, C. R.; DANTAS, B. F.. Handroanthus spongiosus (Rizzini) S. Grose is an endangered tree species. However, its seed quality, storage, and conservation strategies are issues still unexplored. This study aimed to evaluate the physiological quality of H. spongiosus seeds subjected to different storage times, packaging, and environments for their conservation. A completely randomized experimental design was used, in a double factorial arrangement with an additional treatment (recently-harvested seeds), consisted of five storage times (up to 24 months) and six storage conditions, combining packaging types (permeable and impermeable) and environments (room, cold chamber, freezer, and liquid nitrogen conditions). Seed germination percentage and normal seedling percentage, shoot length,... Tipo: Artigo de periódico Palavras-chave: Mata seca; Handroanthus spongiosus; Espécie arbórea; Floresta seca; Semente; Caatinga; Germinação; Longevidade; Armazenamento; Fisiologia; Dry forests; Germination; Longevity; Storage. Ano: 2022 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146060 Direct seeding of dry forest tree species in abandoned pastures: effects of grass canopy and seed burial on germination. Repositório Alice GUARINO, E. de S. G.; SCARIOT, A. O.. Natural tree regeneration in abandoned pastures can be hampered by various biotic and abiotic filters, including seed removal and predation. We tested the effects of maintenance and removal of grass and seed deposition (buried and unburied) on seed germination of 12 tree species in dry forest pastures. We obtained evidence supporting the hypothesis that seeds attain higher germination under a grass canopy than on bare ground. For most species, grass cover provides safety from seed predators and facilitates germination by providing a suitable microclimate with soil humidity similar to the forest. The hypothesis that buried seeds attain higher germination was not supported by our data. Predation and removal of unburied seeds ranged from 0 to 77 % and, alone... Tipo: Artigo de periódico Palavras-chave: Floresta seca; Semeadura direta; Degradação do solo; Siembra directa.; Bosques secos; Germinación de las semillas; Degradación de la tierra; Regeneración natural; Pastizales; Floresta; Regeneração natural; Pastagem; Semente; Poder germinativo; Cobertura do solo.; Dry forests; Land degradation; Pastures; Natural regeneration; Direct seeding; Seed germination.. Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/998986 Ethnobotany of native cacti in the northeast region of Brazil: can traditional use influence availability? Acta Botanica Lima-Nascimento,Ailza Maria de; Bento-Silva,José Severino; Lucena,Camilla Marques de; Lucena,Reinaldo Farias Paiva de. ABSTRACT Documenting the uses of native species of Cactaceae in Northeast Brazil contributes to understanding how the inhabitants of this seasonally dry and low-rainfall region have used these resources, considering that some species of this family of Cactaceae are among the most endangered in the world. The aim of this research was to determine which species of Cactaceae occur in the study area and investigate the knowledge and recurrent uses associated with them, as well as the local availability of the species most used by residents. Ethnobotanical data were collected through semi-structured interviews with 59 heads of households. Guided tours were conducted for data collection and subsequent taxonomic identification of species. Use value and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Caatinga; Conservation; Dry forests; Knowledge on the use of natural resources; Management. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000200350 Expanding tropical forest monitoring into dry forests: the DRYFLOR protocol for permanent plots. Repositório Alice MOONLIGHT, P. W.; BANDA-R, K.; PHILLIPS, O. L.; DEXTER, K. G.; PENNINGTON, R. T.; BAKER, T. R.; LIMA, H. C. de; FAJARDO, L.; GONZALEZ-M., R.; PALOMINO, R. L.; LLOYD, L.; NASCIMENTO, M.; PRADO, D.; QUINTANA, C.; RIINA, R.; RODRIGUEZ M. G. M.; VILLELA, D. M.; AQUINO, A. C. M. M.; ARROYO, L.; BEZERRA, C.; BRUNELLO, A. T.; BRIENEN, R. J. W.; CARDOSO, D.; CHAO, K.-J.; COUTINHO, I. A. C.; CUNHA, J.; DOMINGUES, T.; SANTO, M. M. do E.; FELDPAUSCH, T. R.; FERNANDES, M. F.; GOODWIN, Z. A.; JIMENEZ, E. M.; LEVESLEY, A.; TOLEDO, L. L.; MARIMON, B.; MIATTO, R. C.; MIZUSHIMA, M.; MONTEAGUDO, A.; MOURA, M. S. B. de; MURAKAMI, A.; NEVES, D.; CHEQUIN, R. N.; OLIVEIRA, T. C. de S.; OLIVEIRA, E. A. de; QUEIROZ, L. P. de; PILON, A.; RAMOS, D. M.; REYNEL, C.; RODRIGUES, P. M. S.; SANTOS, R.; SARKINEN, T.; SILVA, V. F. da; SOUZA, R. M. S.; VASQUEZ, R.; VEENENDAAL, E.. Understanding of tropical forests has been revolutionized by monitoring in permanent plots. Data from global plot networks have transformed our knowledge of forests? diversity, function, contribution to global biogeochemical cycles, and sensitivity to climate change. Monitoring has thus far been concentrated in rain forests. Despite increasing appreciation of their threatened status, biodiversity, and importance to the global carbon cycle, monitoring in tropical dry forests is still in its infancy. We provide a protocol for permanent monitoring plots in tropical dry forests. Expanding monitoring into dry biomes is critical for overcoming the linked challenges of climate change, land use change, and the biodiversity crisis. Tipo: Artigo de periódico Palavras-chave: Parcelas de longo prazo; Florestas tropicais secas; Dinâmica da vegetação; Estrutura da vegetação; Monitoramento; Floresta Tropical; Vegetação; Biodiversidade; Tropical forests; Dry forests; Vegetation structure. Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1130180 Florística e estrutura vegetal em áreas de Caatinga sob diferentes sistemas de manejo. Repositório Alice AGUIAR, M. I. de; FIALHO, J. S.; CAMPANHA, M. M.; OLIVEIRA, T. S. de. Objetivou-se analisar a composição florística e caracterizar a estrutura da vegetação em áreas sob dois sistemas agroflorestais (AGP e SILV), em plantio tradicional (TRAD0), em pousios de seis (TRAD6) e nove (TRAD9) anos e em Caatinga conservada (MATA). Adotou-se o método de parcelas, sendo determinadas densidades e frequências absolutas de todas as espécies e distribuição diamétrica dos indivíduos arbóreos/arbustivos. Observou-se que, no estrato herbáceo, as espécies com maior frequência e densidade foram Alternanthera ficoidea em AGP, Amaranthus em SILV e TRAD0 e Commelina virginica em AGP, TRAD6, TRAD9 e MATA. No estrato arbóreo/arbustivo, as espécies com maior densidade e frequência foram Cordia oncocalyx em AGP, MATA e SILV e Mimosa caesalpiniifolia e... Tipo: Artigo de periódico Palavras-chave: Agrosilvicultura; Floresta seca; Cultivation systems; Sistema de Cultivo; Agroforestry; Dry forests; Cropping systems. Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1110762 Functional antagonism between nitrogen-fixing leguminous trees and calcicole-drought-tolerant trees in the Cerrado Acta Botanica Meira-Neto,João Augusto Alves; Tolentino,Gláucia Soares; Silva,Maria Carolina Nunes Alves da; Neri,Andreza Viana; Gastauer,Markus; Magnago,Luiz Fernando Silva; Yuste,Jorge Curiel; Valladares,Fernando. ABSTRACT The Cerrado is the largest savanna of South America and its physiognomy varies from savanna to woodlands. There are two main types of woodlands in the Cerrado: dystrophic woodlands, dominated by N-fixing leguminous trees (LEG), and mesotrophic woodlands dominated by non-leguminous drought-tolerant trees (DRY), which are calcicoles and sensitive to Al3+. The working hypothesis is that LEG and DRY are functional antagonists in terms of the acidification/alkalization processes involving different forms of inorganic nitrogen and pH, Ca2+ and Al3+ in soil. Tree species basal area and soil properties were used to investigate the antagonism between LEG and DRY using generalized linear models. The results suggest that LEG and DRY are antagonists. The LEG... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aluminum toxicity; Calcicole species; Dry forests; Ecosystem function; Nitrogen fixing; Tropical savanna; Woodlands. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100011 Hydropriming changes temperature thresholds for seed germination of tree species from the Caatinga, a Brazilian tropical dry forest. Repositório Alice NASCIMENTO, J. P. B.; DANTAS, B. F.; MEIADO, M. V.. This study evaluates the effects of hydration and dehydration cycles (HD cycles) on seed germination of four Caatinga tree species (Anadenanthera colubrina var. cebil, Enterolobium contortisiliquum, Pityrocarpa moniliformis and Pterogyne nitens) subjected to different temperatures and determine the thermal upper and lower limits of germination. For this, seeds were subjected to 0, 1, 2 and 3 HD cycles and set to germinate at temperatures of 5, 10, 15, 25, 35, 40 and 45 °C. Germinability and t50 were calculated and the differences of these parameters were compared by two-way ANOVA. In addition, germination rate (GR = 1/t50), as well as ceiling (Tc), optimum (To) and base (Tb) temperatures were calculated to estimate the limits below or above which the seeds... Tipo: Artigo de periódico Palavras-chave: Tolerância; Estresse térmico; Modelagem; Planta da Caatinga; Especie arborea; Hidrocondicionamento; Semente; Caatinga; Temperatura; Dry forests; Anadenanthera colubrina; Pityrocarpa moniliformis. Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1135758 Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. Repositório Alice LACERDA JÚNIOR, G. V.; NORONHA, M. F.; CABRAL, L.; DELFORNO, T. P.; SOUSA, S. T. P. de; FERNANDES JUNIOR, P. I.; MELO, I. S. de; OLIVEIRA. V. M.. Drylands occupy approximately 41% of the Earth?s terrestrial surface. Climate change and land use practices are expected to affect biogeochemical cycling by the soil microbiome in these ecosystems. Understanding how soil microbial community might respond to these drivers is extremely important to mitigate the processes of land degradation and desertification. The Caatinga, an exclusively Brazilian biome composed of an extensive seasonal tropical dry forest, is exposed to variable spatiotemporal rainfall patterns as well as strong human-driven pressures. Herein, an integrated analysis of shotgun metagenomics approach coupled to meteorological data was employed to unravel the impact of seasonality and land use change on soil microbiome from preserved and... Tipo: Artigo de periódico Palavras-chave: Floresta seca; Bioma Caatinga; Floresta seca tropical; Comunidades microbianas do solo; Metagenômica; Sazonalidade; Floresta Nativa; Floresta; Caatinga; Solo; Uso da Terra; Floresta Tropical; Ecossistema; Dry forests. Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115430 Land use and seasonal effects on the soil microbiome of a Brazilian dry forest. Repositório Alice LACERDA JÚNIOR, G. V.; NORONHA, M. F.; CABRAL, L.; DELFORNO, T. P.; SOUSA, S. T. P. de; FERNANDES JUNIOR, P. I.; MELO, I. S.; OLIVEIRA. V. M.. Drylands occupy approximately 41% of the Earth?s terrestrial surface. Climate change and land use practices are expected to affect biogeochemical cycling by the soil microbiome in these ecosystems. Understanding how soil microbial community might respond to these drivers is extremely important to mitigate the processes of land degradation and desertification. The Caatinga, an exclusively Brazilian biome composed of an extensive seasonal tropical dry forest, is exposed to variable spatiotemporal rainfall patterns as well as strong human-driven pressures. Herein, an integrated analysis of shotgun metagenomics approach coupled to meteorological data was employed to unravel the impact of seasonality and land use change on soil microbiome from preserved and... Tipo: Artigo de periódico Palavras-chave: Floresta seca; Bioma Caatinga; Floresta seca tropical; Comunidades microbianas do solo; Metagenômica; Sazonalidade; Floresta Nativa; Floresta; Caatinga; Solo; Uso da Terra; Floresta Tropical; Ecossistema; Dry forests. Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108220 The use of firewood in protected forests: collection practices and analysis of legal restrictions to extractivism Acta Botanica Nascimento,Luciana Gomes de Sousa; Ramos,Marcelo Alves; Albuquerque,Ulysses Paulino; Araújo,Elcida de Lima. ABSTRACT Restrictions to the collection of timber resources in protected areas have been scarcely studied. The aim of this study was to describe the practices of firewood collection in a protected forest and the perceptions of collectors, particularly with regard to their adjustment to the rules of the local management plan. The study involved 102 participants of a rural community adjacent to the Araripe National Forest and employed semi-structured interviews, free-listing and in-situ survey techniques for ethnobiological data collection. The volume of wood stored was measured and monitored using a modification of the weight survey technique. The residents used 69 plant species for firewood Most of the informants self-reported disagreement with the rules... Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation unit; Dry forests; Ethnobotany; Forest extraction; Human ecology; Management plans. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000200292 Tree seedling survival and growth in logged and undisturbed seasonal deciduous forest fragments in central Brazil. Repositório Alice GUARINO, E. de S. G.; SCARIOT, A. O.. We evaluated the survival and growth of Amburana cearensis, Cedrela fissilis, and Sterculia striata seedlings in three seasonally tropical dry forest fragments that were subjected to different logging levels (intact, intermediately and heavily logged). In each fragment, we planted 40 seedlings of each species and monitored these over a period of 1 year. The highest seedling survival rate (64%) occurred in the heavily logged fragment, which, however, also had the highest mortality risk for all species during the dry season. Only S. striata seedlings had different survival rates among the fragments. Height and diameter growth were higher at sites with higher canopy openness in the wet season. The survival and growth rates of seedlings planted in logged... Tipo: Artigo de periódico Palavras-chave: Cumaru nordestino; Umburana de cheiro; Amburana cearensis; Rio Paranã; Explotación forestal; Crecimiento de plántulas; Bosques secos; Madera tropical.; Floresta tropical; Essência florestal; Cedro; Cedrela fissilis; Pau Rei; Sterculia stricta; Muda; Crescimento; Sobrevivência; Extração da madeira; Dry forests; Tropical wood; Logging; Seedling growth.. Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/901975 Umbuzeiro: avanços e perspectivas. Infoteca-e DRUMOND, M. A.; AIDAR, S. de T.; NASCIMENTO, C. E. de S.; OLIVEIRA, V. R. de. O umbuzeiro, frutífera endêmica da Caatinga, desponta como uma das alternativas, sendo responsável pela complementação de renda de muitas famílias de agricultores do Semiárido. Para contribuir com o conhecimento sobre essa espécie, estão reunidos, nesta obra, experiências, tecnologias e produtos gerados pela programação de Pesquisa, Desenvolvimento e Inovação da Embrapa Semiárido, nas últimas décadas, com o objetivo de consolidar a cadeia produtiva do umbuzeiro e inserir seus derivados nos mercados nacional e internacional. O livro apresenta-se com o seguinte sumário: Capítulo 1. Caracterização ambiental do Semiárido brasileiro; Capítulo 2. Caracterização botânica e biologia reprodutiva; Capítulo 3. Recursos genéticos; Capítulo 4. Ecofisiologia; Capítulo... Tipo: Livro técnico (INFOTECA-E) Palavras-chave: Umbuzeiro; Spondias tuberosa Arruda; Biodiversdiade; Ecofisiologia; Fruticultura da biodiversidade; Fruticultura da Caatinga; Fruit tree; Plant phenology; Umbu; Vegetação nativa; Botânica; Caatinga; Biodiversidade; Melhoramento genético vegetal; Melhoramento vegetal; Reprodução vegetal; Propagação vegetativa; Tecnologia de alimento; Mercado; Conservação; Pós-Colheita; Spondias; Dry forests; Savannas; Plant breeding. Ano: 2016 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1046431 Registros recuperados: 15 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco