Seedling Recruitment
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. The effects of two abundant ant species on soil nutrients and seedling recruitment in Brazilian Atlantic Forest
ABSTRACT Ants can influence soil fertility and the spatial distribution of seeds, with possible effects on seedling recruitment. The ant species Pachycondyla striata Fr. Smith, 1858 and Odontomachus chelifer (Latreille, 1802) co-occur in many forest areas in the Neotropics. We assessed soil fertility and seed bank structure in soil samples close and distant
Rev. Bras. entomol.. Publicado em: 13/01/2020
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2. Ex situ initial seedling development of Hymenaea courbaril L. (Fabaceae): a crucial phase to preserve the species
RESUMO Hymenaea courbaril L. é uma importante espécie Neotropical, que aparece com baixa densidade populacional, restrita a fragmentos de florestas semidecíduas, com baixa mortalidade e baixo recrutamento. Assim, algumas questões orientaram os objetivos deste trabalho, incluindo a capacidade de sementes armazenadas para formar mudas normais. Sementes col
Hoehnea. Publicado em: 19/08/2019
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3. Environmental stress, future climate, and germination of Myracrodruon urundeuva seeds 1
Resumo: Myracrodruon urundeuva, espécie nativa da Caatinga e de ampla distribuição geográfica, apresenta relevante valor socioeconômico. Objetivou-se avaliar a influência de estresses ambientais sobre a germinação de lotes de diferentes safras de M. urundeuva. Foram testadas as temperaturas constantes de 10 a 40 °C e potenciais osmóticos de 0 a -0,
J. Seed Sci.. Publicado em: 2019-01
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4. Effects of flooding and its temporal variation on seedling recruitment from the soil seed bank of a Neotropical floodplain
ABSTRACT Evaluation of the effects of flooding on seedling recruitment from seed banks helps in understanding vegetation regeneration in floodplains. We studied the effects of simulated flooding on richness and abundance of, and temporal variation in, seedling recruitment from the soil seed bank of a floodable savanna of the Pantanal wetland, under two condi
Acta Bot. Bras.. Publicado em: 27/10/2016
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5. Local extinction of an important seed disperser does not modify the spatial distribution of the endemic palm Astrocaryum aculeatissimum (Schott) Burret (Arecaceae)
Spatial pattern of the palm Astrocaryum aculeatissimum was investigated in an urban Atlantic Forest fragment (Tijuca National Park, Brazil) where its main seed disperser, the red-rumped agouti Dasyprocta leporina, is locally extinct. A 120 × 130 m plot (1.56 ha) was established in which all A. aculeatissimum individuals were quantified, georeferenced, and c
Acta Bot. Bras.. Publicado em: 2015-06
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6. The effects of an exotic palm on a native palm during the first demographic stages: contributions to ecological management
Biological invasions have negative impacts on native biota and consequently on biodiversity. In patches of Atlantic Forest in Brazil, the Australian palm tree Archontophoenix cunninghamiana has become invasive, whereas the endemic palm Euterpe edulis is threatened with extinction. The two species occupy parts of the same functional niche within the forests,
Acta Bot. Bras.. Publicado em: 2014-12
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7. The exotic palm Roystonea oleracea (Jacq.) O. F. Cook (Arecaceae) on an island within the Atlantic Forest Biome: naturalization and influence on seedling recruitment
Here, we investigated the population structure of the exotic palm Roystonea oleracea in a swamp on an island within the Atlantic Forest Biome, evaluating its influence on the seedling recruitment of other plant species. The population structure was analyzed in six 4 × 30 m plots, within which we categorized all individuals by ontogenetic stage. The influenc
Acta Bot. Bras.. Publicado em: 2014-09
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8. Estratégias reprodutivas de Leiothrix vivipara (Bong.) Ruhl (Eriocaulaceae) na Serra do Cipó
Pseudovivipary is a kind of vegetative reproduction characterized by the development of plantlets on reproductive structures. This form of reproduction occurs in plants living in terrestrial environments with high seasonality such as the Arctic, highlands, or deserts. Leiothrix vivipara (Eriocaulaceae), an endemic species from the campos rupestres vegetation
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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9. Mixed reproduction systems in Opuntia monacantha (Cactaceae) in Southern Brazil
The Cactaceae have morphological and physiological adaptations associated with their life histories that are reflected in different modes of reproduction and multiplication. The reproductive phenology, preferential reproductive mode, and the sexual and asexual multiplication of Opuntia monacantha were investigated between 2003 and 2006 in two restinga (sandy
Braz. J. Bot.. Publicado em: 2012
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10. Implicações ecológicas da dormência de sementes em Butia odorata (ARECACEAE)
Butia odorata (butiazeiro) é uma palmeira que ocorre em regiões subtropicais da América do Sul, onde constitui formações savânicas em áreas associadas com o manejo pecuário. Após a dispersão, suas sementes apresentam dormência, que pode ser superada por tratamentos de calor úmido. Esta tese visou avaliar como esta dormência responde a variáveis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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11. Ganho de peso de novilhas em pastagem de Brachiaria decumbens recuperada com stylosanthes guianensis cv. Mineirão.
RESUMO: Com o objetivo de avaliar o efeito de duas estratégias de recuperação de pastagens degradada de Brachiaria decubens cv. Brasilisk, no período de outubro de 1993 a dezembro de 1997, conduziu-se um experimento em um Latossolo Vermelho-Esecuro, textura argilosa, na Fazenda Santa Inez, Uberlândia (MG). Os tratamento estudados foram: (a) calagem e ad
Planaltina. Publicado em: 2011
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12. Estudo populacional e do potencial invasor da espécie exótica Leucaena leucocephala (Lam.) de Wit em floresta estacional semidecidual
Leucaena leucocephala (Lam.) de Wit is one of the more than 100 species of exotic invasive vascular flora currently registered in Brazil. Planted as hedge at the edge of the semideciduous forest remnant in the IbiporA Forest Park about 25 year ago, it occupieds part of the edge of the remnant, raising the hypothesis that it might invade areas of native fores
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/06/2010