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Registros recuperados: 9
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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
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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 em periódico indexado (ALICE) Palavras-chave: Floresta seca; Floresta; Regeneração natural; Degradação do solo; Pastagem; Semente; Poder germinativo; Cobertura do solo; Semeadura direta; Dry forests; Land degradation; Pastures; Natural regeneration; Direct seeding; Seed germination; Bosques secos; Degradación de la tierra; Pastizales; Regeneración natural; Siembra directa; Germinación de las semillas.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/998986
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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
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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
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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 em periódico indexado (ALICE) 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
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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 em periódico indexado (ALICE) 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
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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
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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=S0102-33062019005003109
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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 em periódico indexado (ALICE) Palavras-chave: Cumaru nordestino; Umburana de cheiro; Amburana cearensis; Rio Paranã; Floresta tropical; Essência florestal; Cedro; Cedrela fissilis; Pau Rei; Sterculia stricta; Muda; Crescimento; Sobrevivência; Extração da madeira; Dry forests; Tropical wood; Logging; Seedling growth; Bosques secos; Madera tropical; Explotación forestal; Crecimiento de plántulas.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/901975
Registros recuperados: 9
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