Crown Dynamics
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. AUTOMATED INDIVIDUAL TREE DETECTION IN AMAZON TROPICAL FOREST FROM AIRBORNE LASER SCANNING DATA
ABSTRACT Light Detection and Ranging (LiDAR) derived individual tree crown attributes can potentially serve as a tool for ecology and forest dynamics studies and reduce field inventory costs. In this study, four methods of individual tree detection (ITD), Watershed, Silva et al. (2016), Dalponte and Coomes (2016), and Coomes et al. (2017), were evaluated in
CERNE. Publicado em: 20/12/2019
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2. O vigor da planta altera a densidade de galhas em populações de Baccharis longiattenuata (Asteraceae) sob distintas condições de solo?
Resumo A hipótese do vigor da planta sugere que plantas mais vigorosas suportam maior densidade de galhas. Este estudo avaliou tal hipótese utilizando o sistema ácaro-Baccharis longiattenuata em duas populações de restinga sob condições ambientais distintas. As medidas de vigor incluíram: altura e diâmetro do caule, volume e área da copa, número d
Rodriguésia. Publicado em: 25/04/2019
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3. Decepa de plantas jovens de eucalipto em um sistema agroflorestal: dinâmica de copa e crescimento / Coppicing of juvenile plants of eucalypt in agroforestry system: Growth and crown dynamics
O crescimento e a dinâmica de copa de plantas intactas e decepadas de dois clones de eucalipto foram avaliados em sistema agroflorestal no espaçamento 9,5 x 4,0 m em Vazante, MG (173609S e 464202W). Plantas intactas foram comparadas com brotações provenientes de plantas decepadas aos 9 e 12 meses após plantio, sem desbrota, e, com desbrota aos 6 e 9 mes
Publicado em: 2008
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4. Crown dynamics and growth on eucalypt clones stands submitted to artificial pruning in an agroforestry system / Dinâmica de copa e crescimento de clones de eucalipto submetidos a desrama em sistema agroflorestal
The crown dynamic, growth and time spent to prune were evaluated in two eucalypt clones stands, in an agroforestry system, in a 9.5 x 4.0 m spacing, in Vazante, MG (1736 S, 4642 W and altitude of 550m). Pruning treatments included control and removal of one third or one fourth of the plant live crown height, with or without removal of some thick branches abo
Publicado em: 2007
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5. Dinâmica de copa, crescimento e viabilidade econômica de um povoamento de eucalipto submetido a desrama e desbaste / Crown dynamics, growth and economic viability of a pruned eucalypt clone stand submitted to thinning
A estrutura do dossel e o crescimento de plantas desramadas de clone de Eucalyptus grandis W. Hill ex Maiden submetidas a diferentes intensidades e freqüências de desbaste (0%, 35% aos 55 meses e aos 81 meses e, 70% aos 81 meses, com e sem eliminação da brotação das cepas remanescentes) foram avaliados entre 81 e 102 meses de idade, em povoamentos loca
Publicado em: 2007
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6. Aspectos ecológicos e econômicos do plantio de Pinus elliottii Engelm var. elliottii como facilitadora da restauração de mata ripária em região de Cerrado (Assis, SP, Brasil) / Exotic species in forest restoration: ecological and economical aspects of using Pinus elliottii Engelm var. elliottii as pioneer in Cerrado region, Assis, SP, Brazil
Among the obstacles to the native forests restoration in Brazil we find the high costs of planting high diversity of native trees. Searching for reduction of costs and vegetation recovery acceleration, the use of a fast growing exotic species (Pinus elliottii var. elliottii) as pioneer was tested in a riparian area in the cerrado domain, at Assis municipalit
Publicado em: 2007
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7. Regime de distúrbio e dinâmica da regeneração natural na Floresta Pluvial Atlântica Submontana / Disturbance regime and natural regeneration dynamics in the Lower Montane Atlantic Rain Forest
In a 10.24 ha permanent plot of Tropical Lower Montane Atlantic Rain Forest in the Carlos Botelho State Park (Sete Barras, SP, Brazil), this study aimed to describe the canopy disturbance regime and to assess natural regeneration under different light regimes. In order to do so, the plot was completely surveyed for canopy gaps that were measured and had thei
Publicado em: 2007
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8. Comunidade de lianas e sua associação com arvores em uma floresta estacional semidecidual
Lianas are soil-germinating plants, perennially rooted and which need support to reach the canopy. They are characteristically from the rain forests, where they contribute with near 25% of vegetal diversity. Lianas compete with trees for nutrients and light, influencing growth and mortality rates of its host tree. Although lianas begin their life on the grou
Publicado em: 2005
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9. Ecologia de populações de Lytocaryum hoehnei (Burret) Toledo (Arecaceae) na Reserva Florestal do Morro Grande, Cotia, SP
The present study has investigated aspects of the natural history and ecology of palm Lytocaryum hoehnei. The palms were accompanied in three sites at the Reserva Florestal do Morro Grande, Cotia, SP, approximately 4 km apart from each other, during 2000, 2001, and 2002. Four ontogenetic stages were identified: 1) seedling: individuals with entire leaves, 2)
Publicado em: 2004
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10. Aspectos demograficos de Aspidosperma polyneuron Muell. Arg. (Apocynaceae) em dois fragmentos de floresta semidecidua no municipio de Campinas, SP
The population dynamics and the spatial-temporal variation in the size and spatial structures of an emergent tree species, Aspidosperma polyneuron, were studied in two semideciduous forests, the Reserva Municipal de Santa Genebra (SG) and the Mata do Ribeirão Cachoeira (RC), in the Southeast of Brazil. The annual mortality, recruitment and . growth rates of
Publicado em: 2001
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11. Seasonal and spatial population dynamics of the nitrogen-efficient guild in a desert bajada grassland.
This study examined the temporal and spatial variation in the populations of bacteria from a Chihuahuan desert bajada grassland that could grow on nearly nitrogen-free medium, a nitrogen-efficient guild (NEG). A Curtis similarity index of 0.876 and nearly identical diversity and equability indexes (H' = 1.22, J = 0.46 and H' = 1.27, J = 0.48 for the crown ed
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12. Colonization of Vitis vinifera by a Green Fluorescence Protein-Labeled, gfp-Marked Strain of Xylophilus ampelinus, the Causal Agent of Bacterial Necrosis of Grapevine
The dynamics of Xylophilus ampelinus were studied in Vitis vinifera cv. Ugni blanc using gfp-marked bacterial strains to evaluate the relative importance of epiphytic and endophytic phases of plant colonization in disease development. Currently, bacterial necrosis of grapevine is of economic importance in vineyards in three regions in France: the Cognac, Arm
American Society for Microbiology.