Diaspore Dispersal
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Litter production and seed rain in semideciduous forest fragments at different successional stages in the western part of the state of Paraná, Brazil
We documented litter production and seed rain in fragments of semideciduous forest (SDF) in the western part of the state of Paraná, Brazil: a late successional fragment (LF); an early successional fragment (EF); and a reforested late successional fragment (RLF). In each fragment, we established three permanent plots with four litter traps each, correspondi
Acta Bot. Bras.. Publicado em: 2014-09
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2. Pericarp ontogenesis with emphasis on the dispersal apparatus of three weed species of Faboideae (Fabaceae)
It is known that the efficient dispersal is one among other features that amplify the invasion potential of a plant. Knowledge of the ontogeny, morphology and fruit dispersal of species is indispensable for weed control in crops. To identify the pericarp structures involved in the fragmentation and dehiscence processes and other features related to dispersal
Acta Bot. Bras.. Publicado em: 2013-12
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3. CHUVA DE SEMENTES EM REMANESCENTE DE CAATINGA NO MUNICÍPIO DE PORTO DA FOLHA, SERGIPE BRASIL. / SEED RAIN IN REMAINING IN THE CITY OF PORT CAATINGA LEAF, SERGIPE - BRAZIL.
As florestas tropicais secas apresentam uma grande diversidade biológica e estudos sobre os mecanismos de dispersão e chuva de sementes proporcionam informações valiosas sobre padrões de dispersão, entradas e saídas de diásporos que atuam no processo de regeneração natural em ambientes preservados e/ou degradados, assim como na abundância, distrib
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2012
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4. A fragmentação florestal e a interação entre formigas e diásporos carnosos na floresta Atlântica / Forest fragmentation and the interaction between ants and fleshy diaspores in the Atlantic forest
Em florestas tropicais, formigas de folhiço são freqüentemente vistas em interação com diásporos vegetais (frutos e sementes). Em alguns casos, esta interação oportunista resulta em um mutualismo. Enquanto formigas se beneficiam ao alimentar-se de partes carnosas nutritivas (i.e., polpa, arilo), elas podem beneficiar a semente, por exemplo, ao aument
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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5. Pollination and dispersal systems in a Cerrado remnant (Brazilian Savanna) in Southeastern Brazil
The aim of this work was to identify the pollination and dispersal systems among the species in a disjunct marginal cerrado area and to compare the frequency of these systems to those found in other Neotropical vegetation. The floral and diaspore traits and the pollination and dispersal systems of 176 species were analysed in a cerrado remnant in Southeaster
Brazilian Archives of Biology and Technology. Publicado em: 2011-06
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6. Padrões, processos e mecanismos de nucleação da vegetação lenhosa florestal nos campos do Planalto Nordeste do Rio Grande do Sul
O modelo tradicional de dinâmica de expansão da floresta com Araucaria sobre os campos do Planalto Sul-brasileiro foi desenvolvido pelo naturalista Roberto Klein (1923-1992), e foi baseado no processo de nucleação florestal em áreas campestres. Estudos visando compreender o processo de estabelecimento de espécies de plantas lenhosas florestais em manch
Publicado em: 2008
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7. Interactions etween ants, fruits and seeds in the cerrado : the role of ants in the biology of seeds and seedlings / Interações entre formigas, frutos e sementes em solo de cerrado : o papel de formigas na biologia de sementes e plantulas
Our knowledge about seed dispersal systems has been improved considerably in the last few years. An increasing number of studies has shown that the process of plant regeneration is often much more complex than we realize, including several different agents across subsequent steps of seed dispersal. For instance, ants may reshape the seed shadow after seeds f
Publicado em: 2007
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8. Sincronia e índice de divergência de diversidade de espécies anemocóricas.
The Cerrado Domain is the second largest Brazilian phytogeographic province, occupying originally 23% of Brazils land surface, under seasonal climate. The cerrado presents a floristic and physiognomic variation, ranging from grassland to tall woodland. Anemochorous species are proportionally more important in the cerrado than in Brazilian rain forests, espec
Publicado em: 2006
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9. Geographic patterns of the fruit traits from Atlantic forest: environmental and ecological relationships of the dispersal modes / Padrões geográficos das síndromes de dispersão e características dos frutos de espécies arbustivo-arbóreas em comunidades vegetais da Mata Atlântica
Fruits with seeds dispersed by vertebrates are very frequent in tropical forests. However, there is a great variation in the proportion of zoochoric fruits when different communities are compared. Atlantic forest might have between its species, similar proportion of biotic dispersal modes comparing with other tropical forest communities but, its communities
Publicado em: 2006
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10. Fenodinamcia de lianas e forofitos em um fragmento de cerrado em Itirapina (SP) / Liana and tree phenodynamic in a cerrado fragment from Itirapina (SP), Brazil
Different life-forms with different resources allocation strategies can show different phenologies. Biotic and abiotic interactions and anthropogenic disturbance may additionally influence the phenology. The aims of this study were (a) to test the phenology between trees with and without lianas at the edge and in the interior of a dense cerrado fragment in I
Publicado em: 2006