Floristic And Density Of Seeds
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Floristic diversity of the soil weed seed bank in a rice-growing area of Brazil: in situ and ex situ evaluation
The objective of this study was to compare the ex situ and in situ floristic diversity of the soil weed seed bank of a rice field in northeastern Brazil. In a rice field in the county of Bacabal, located in the state of Maranhão, thirty 25-m² plots were laid out. From 15 plots, soil samples (6/plot; n = 90) were taken with a soil probe (25 × 16 × 3 cm) a
Acta Bot. Bras.. Publicado em: 2013-09
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2. Dinâmica populacional e efeitos de variáveis ambientais sobre a fauna de pequenos mamíferos em um fragmento de floresta com araucária no sul do Brasil
Natural populations of small rodents fluctuate continually over time and the population dynamics of any living organism are shaped by both intrinsic and extrinsic factors. Small mammals populations can show a continuum dynamic activity, ranging from stability to regular cycles of variable amplitude. The species dynamics is also known to be influenced by the
Publicado em: 2010
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3. MECANISMOS DE REGENERAÇÃO NATURAL E ESTRUTURA POPULACIONAL DE TRÊS ESPÉCIES ARBÓREAS EM REMANESCENTE DE FLORESTA OMBRÓFILA MISTA, RIO GRANDE DO SUL / NATURAL REGENERATION MECHANISMS AND POPULATION STRUCTURE OF THREE SPECIES IN MIXED RAIN FOREST REMNANT, RIO GRANDE DO SUL
The ecology of regeneration and population dynamics is necessary information to the conservation and management of forest ecosystems. Thus, this study aimed to characterize: a) the mechanisms of natural regeneration in a Mixed Rain Forest remnant and b) the population structure of Araucaria angustifolia (Bertol.) Kuntze, Blepharocalyx salicifolius (Kunth) O.
Publicado em: 2010
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4. Estudo do potencial de regeneração natural : uma análise da chuva de sementes e do estrato regenerante da vegetação ciliar na bacia hidrográfica do rio Taperoá, semiárido paraibano, Brasil
Objetivou-se estudar a regeneração natural em uma área ciliar de Caatinga na bacia do rio Taperoá, semi-árido paraibano. A pesquisa foi realizada no período de janeiro/2005 a abril/2007 e abrangeu a área ribeirinha do riacho do Cazuzinha (72613S e 365430W; 564-579 m de altitude). Nesse sentido, o trabalho compreendeu as seguintes etapas: 1) caracteriz
Publicado em: 2008
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5. Fenologia e chuva de sementes em Floresta Estacional Semidecidual no município de Viçosa, Minas Gerais, Brasil. / Phenology and seed rain in Semidecidual Seasonal Forest in Viçosa, Minas Gerais, Brazil
The present study was divided in two chapters. On the first it was aimed to study the phenology of 20 arboreal species and to answer the following questions: (1) Which is the seasonality degree in the production of flowers, fruits, falling and leaf shooting? (2) Are there any flowering and fructification synchrony intra and interespecific? (3) What is the in
Publicado em: 2007
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6. Soil seed bank in a contiguous area of degraded pasture, eucalypt plantation and natural forest, in Paula Cândido MG / Banco de sementes em áreas contíguas de pastagem degradada, plantio de eucalipto e floresta natural, em Paula Cândido - MG
The present study was developed in the domain of the Atlantic Forest, Minas Gerais State, Brazil, with the objective to evaluate the soil seed bank under degraded pasture, a nine year old Eucalyptus grandis plantation and a semideciduous seasonal forest fragment. In the first part of this study, the soil seed bank was analysed in two sequences of vegetation
Publicado em: 2006
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7. Dinamica da dispersão de sementes e regeneração de plantas da planicie litoranea da Ilha do Mel, PR
(Seed dispersal and plant regeneration dynamics in a Sandy Coastal Plain on Ilha do Mel, southern Brazil): The island Ilha do Mel is located in the municipality of Paranaguá (25°29 /25°34 32"S e 48°17 15"/48°23 16"W) in the central coastal region of Paraná State, Brazil and comprises 2760ha. The higher areas above the Sandy Coastal Plain contains very
Publicado em: 2002
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8. Estrutura e dinamica de populações de especies arbustivo-arboreas da vertentes norte e sul do morro da Boavista, maciço da Tijuca-RJ
The structural and dynamic differences between North and South slopes of Morro da Boavista (22° 57 9" S. and 43° 18 3" W. Gr.), in Tijuca Mountain, Rio de Janeiro tree communities were studied. The Tijuca Montain range runs in a Northeast-Southeast direction, and most of the slopes are either North- facing or South- facing. This orientation causes gradient
Publicado em: 1993