Dispersal Limitation
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Crop size influences pre-dispersal seed predation in the Brazilian Cerrado
ABSTRACT Many pre-dispersal seed predators are specialized insects that rely on seeds for larval development. These insects may respond to the amount of seeds produced by a plant (i.e. crop size), increasing the proportion of seeds damaged with increases in seed numbers. Large seeds have more resources and spend more time in plants to complete their developm
Acta Bot. Bras.. Publicado em: 27/11/2017
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2. Host specificity and experimental assessment of the early establishment of the mistletoe Phoradendron crassifolium (Pohl ex DC.) Eichler (Santalaceae) in a fragment of Atlantic Forest in southeast Brazil
Mistletoe establishment relies heavily on a seed reaching a proper host plant. Small frugivorous birds usually disperse large numbers of mistletoe seeds. However, in the field, mistletoes are absent from some potential available hosts. We investigated whether the mistletoe Phoradendron crassifolium has some preferences for specific host trees in a fragment o
Acta Bot. Bras.. Publicado em: 2014-12
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3. Reprodução, distribuição e padrões de co-ocorrência em uma comunidade de palmeiras na Amazônia central: Uma abordagem teórica e experimental / Main drivers controlling reproduction, distribution and co-occurrence patterns in a palm community in a terra firme Forest at central Amazonia: A theoretical and experimental approach
One of the main concerns of community ecology is to determine which factors affect species distribution. Starting from the premise that fruit production is the last step of true establishment, we match environmental gradients and the experimental approaches with help from phylogenetic tools to bring light into the mechanisms influencing palm distribution pat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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4. Micro-sítio como filtro para o estabelecimento de regenerantes arbóreos em áreas restauradas / Microsites as filters for tree species establishment under restoration plantings
The characteristics of the natural regeneration of restoration plantings understory express the main indicators of success of ecological restoration projects, in which the absence of regeneration indicates a bottleneck for the perpetuation of forest communities inserted into highly fragmented landscapes. Nevertheless, adverse conditions of the micro-site of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/12/2011
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5. Variación florística de especies arbóreas a escala local en un bosque de tierra firme en la Amazonia colombiana
This study was carried out in a 5-ha permanent plot established in the Amacayacu National Park, Colombian Amazonia. We assessed the extent at which floristic patterns of tree species were determined by either the environmental variation or the spatial configuration in tierra firme forests. Floristic and environmental variation was assessed on quadrants of 20
Acta Amaz.. Publicado em: 2010-03
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6. Neutral Theory could explain diversity of aquatic insects in streams? / A Teoria Neutra pode explicar a diversidade de insetos aquáticos em riachos?
The generality of Unified Neutral Theory of Biodiversity and Biogeography was evaluated across its support for diversity structure of Odonata adults and predators, shredders and collectors insect guilds in streams. The evaluation of Neutral Theory was done in two levels of theorys hierarchical structure. One evaluation in the level of yours assumptions, the
Publicado em: 2009
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7. Diversidade Beta da Comunidade de Pteridófitas de Florestas de Terra-Firme da Amazônia Central
Planejar a conservação na Amazônia é um grande desafio. A heterogeneidade de hábitats é grande mesmo em escalas pequenas. Para planejar a conservação, é necessário entender como a variação nas comunidades biológicas está relacionada com a variação ambiental e geográfica. Neste estudo, usando pteridófitas (samambaias e plantas afins) com mod
Publicado em: 2006
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8. VARIAÇÃO NA COMPOSIÇÃO DA COMUNIDADE HERBÁCEA EM ÁREAS RIPÁRIAS DA AMAZÔNIA CENTRAL
In spite of general agreement on the influence of environmental heterogeneity on species distribution, in Central Amazonia habitat is often delimited as rough classes, such as plateau, slope and floodplain. However, important differences in species composition may occur within seemingly homogeneous environments. We investigated the structure of the ground he
Publicado em: 2005
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9. 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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10. Análise da vegetação arbórea e conservação na Reserva Florestal da Cidade Universitária "Armando de Salles Oliveira", São Paulo, SP / Analysis of arboreal vegetation and conservation at the Forest Reserve of the Cidade Universitária "Armando de Salles Oliveira", São Paulo, SP, Brazil
This work analyses the structure and dynamics, at several spatial and temporal scales, of the arboreal community in the Reserve of the Cidade Universitária "Armando de Salles Oliveira" (CUASO) (23º33 S, 46º43 W), São Paulo, SP. Based on these data, management actions are suggested, aiming at the conservation of the arboreal community at the site. The
Publicado em: 2002
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11. Neutrality, niches, and dispersal in a temperate forest understory
A fundamental goal of ecology is to understand what controls the distribution and abundance of species. Both environmental niches and trade-offs among species in dispersal and competitive ability have traditionally been cited as determinants of plant community composition. More recently, neutral models have shown that communities of species with identical li
National Academy of Sciences.
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12. Proximity is not a proxy for parentage in an animal-dispersed Neotropical canopy palm
We used parentage analysis to estimate seedling recruitment distances and genetic composition of seedling patches centred around reproductive trees of the animal-dispersed Neotropical canopy palm Iriartea deltoidea in two 0.5 ha plots within second-growth forest and one 0.5 ha plot in adjacent old-growth forest at La Selva Biological Field Station in nor
The Royal Society.