Secondary Dispersal
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. Aquatic food webs will need to stand on giants’ shoulders
Resumo As teias tróficas têm sido impactadas especialmente nos últimos 30 anos. Isto ocorre em especial para teias tróficas com Espécies Generalistas Viajantes (MGS) que são espécies com alta mobilidade (movimento e dispersão) e flexibilidade em forrageamento e uso do habitat. Em geral, MGS são espécies de grande tamanho com habilidade de se mover
Acta Limnol. Bras.. Publicado em: 24/10/2019
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2. Factors driving seed dispersal in a Neotropical river-floodplain system
ABSTRACT Dispersal is a key process affecting the diversity of natural communities. We addressed hydrochory of wetland plant seeds in the Middle Paraná River floodplain. We first studied seed dispersal by drifting macrophytes in the Paraná River main channel (MC), in a high discharge secondary channel (HD) and in two low discharge channels (LD) during an e
Acta Bot. Bras.. Publicado em: 18/07/2019
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3. 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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4. Introducing the term 'Biocontrol Plants' for integrated pest management
Studies of interactions between crops, additional plants, pests and beneficial organisms already exist as well as studies of natural enemy preference, dispersal, and abundance. However, these studies focus on tri-trophic interactions from an "arthropod" point of view. We think that in order to optimize crop protection methods we need to understand the effect
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-02
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5. Pollen and seed flow patterns of Carapa guianensis Aublet. (Meliaceae) in two types of Amazonian forest
Various factors affect spatial genetic structure in plant populations, including adult density and primary and secondary seed dispersal mechanisms. We evaluated pollen and seed dispersal distances and spatial genetic structure of Carapa guianensis Aublet. (Meliaceae) in occasionally inundated and terra firme forest environments that differed in tree densitie
Genet. Mol. Biol.. Publicado em: 16/10/2012
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6. 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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7. Aproximación didáctica a la termodinámica con modelos y literatura de ciencia ficción
Energy transformations teaching at secondary school, generally relate to conservation and transference. Moreover, the subject related to the dispersal of energy receives no special attention. There is a general consensus that entropy is one of the more difficult concepts. So we made an investigation with students from the last year of the secondary school wh
Ciência & Educação (Bauru). Publicado em: 2011
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8. Padrões de assembléia de aves frugíveras em diferentes estágios sucessionais na Mata Atlântica do sul do Brasil / Patterns of frugivorous birds assemblage in different successional stages in the southern Brazil Atlantic Forest
A composição e abundância de aves podem variar de acordo com diferentes graus de modificação de habitat, como quanto a estágios sucessionais e estrutura da vegetação. Dada a importância da dispersão de sementes pela avifauna no processo de sucessão florestal, o objetivo deste trabalho foi verificar a abundância, riqueza e composição da assembl�
Publicado em: 2010
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9. 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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10. Padrões florísticos e estruturais das Florestas Estacionais Semideciduais do Triângulo Mineiro, MG / Floristic and structural patterns of semideciduous seasonal forests of Triângulo Mineiro, MG
The semideciduous seasonal forests (SSF) of southeastern Brazil have a high floristic diversity, accompanied by a high beta diversity, even between nearby fragments. However, nowdays these forests have been represented by a large number of small fragments, a landscape pattern typical for this region. In addition to the processes related to fragmentation, the
Publicado em: 2010
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11. Dispersão de sementes por Atta robusta Borgmeier, 1939 (Hymenoptera: Formicidae) na restinga da Ilha de Guriri- ES / Seeds dispersal by Atta robusta Borgmeier, 1939 (Hymenoptera: Formicidae) in restinga forest Guriri Island, Brazil
This thesis characterized the use of fruits and seeds by Atta robusta Borgmeier, 1939, and the effects on the germination, seeds predation and seedlings survival. Fieldwork was carried out in the Guriri Island (1843S, 3945W), São Mateus, Espírito Santo State, Southeast Brazil, from March 2005 to March 2006. A. robusta was foraging 35 species of fruits and
Publicado em: 2007
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12. 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