Diaspore
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Bibliometric analysis on kaolinite flotation
Abstract The current work presents a bibliometric discussion on articles published worldwide concerning kaolinite flotation in international journals from 1992 to 2015. In total, 39 articles were selected from Elsevier's database, SciVerse ScienceDirect. This work allowed to recognize and identify which are the thematic and methodological trends that are bei
REM, Int. Eng. J.. Publicado em: 2017-12
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2. 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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3. 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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4. Phytotoxic activity of crude aqueous extracts and fractions of young leaves of Sapindus saponaria L. (Sapindaceae)
The aim of this study was to evaluate the phytotoxic potential of aqueous extract of young leaves of Sapindus saponaria L. (soapberry) on the diaspore germination and seedling growth Lactuca sativa L. (lettuce) and Allium cepa L. (onion), as well as to determine, by bioassay-guided fractioning, whether the fractionated extracts of those leaves are phytotoxic
Acta Bot. Bras.. Publicado em: 2013-03
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5. 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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6. 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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7. Allelopathic interference of Sapindus saponaria root and mature leaf aqueous extracts on diaspore germination and seedling growth of Lactuca sativa and Allium cepa
Sapindus saponaria (soapberry) is a species that presents a great diversity of chemical compounds, such as saponins; however, few studies have examined the allelopathic effect of this species. Therefore, this study provides an evaluation of the allelopathic potential of aqueous extracts of the roots and mature leaves of S. saponaria on the germination of dia
Braz. J. Bot.. Publicado em: 2012
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8. Padrão de germinação de sementes e estabelecimento de mudas de guanandi (Calophyllum brasiliense Cambess.)
CHAPTER II: Calophyllum brasiliense Cambess. is a tree, typical of tropical rainforests, with seed germination variable and uneven due to restrictions of the layers of the integument. The objective was to characterize the dormancy of seeds of species by their ability to soak, germination, emergence, distribution of germination over time and the timing and qu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/04/2011
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9. 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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10. Aplicações de microcospia eletrônica de varredura (MEV) e sistema de energia dispersiva (EDS) no estudo de gemas exemplos brasileiros
This paper presents results of SEM and EDS study in some Brazilian gemstones. Emerald from Campos Verdes (GO) contains several mineral inclusions as talc, dolomite, chromite, pyrite, magnetite, etc. Sylvite crystals was firstly identified by SEM/EDS. These salt inclusions suggest percolation of K-bearing fluids during emerald crystallization. Emerald from Ca
Publicado em: 2010
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11. O consumo de sementes e frutos carnosos por formigas em Mata Atlântica : história natural, ecologia e variação espacial de uma interação proeminente / The seeds and fleshy fruits consumption by ants in the Atlantic forest : natural history, ecology and spatial variation of a prominent interaction
A grande quantidade de frutos carnosos e a diversidade e abundância de formigas em ambientes tropicais faz com que a interação entre formigas e diásporos seja bastante comum. Atualmente sabe-se que estas interações envolvem dezenas de espécies de plantas e formigas em uma comunidade ecológica. Dentre as espécies da fauna de formigas que interagem co
Publicado em: 2010
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12. Morphology and anatomy of the Cordia trichotoma (Vell.) Arrab. ex I. M. Johnst diaspore (Boraginaceae)
Esse estudo analisa a morfologia e anatomia do diásporo de Cordia trichotoma (Vell.) Arrab. ex I. M. Johnst. Os objetivos do estudo são: a análise estrutural do cálice e corola que persistem no fruto maduro e atuam no processo de dispersão anemocórica; a vascularização do gineceu para melhor entendimento do número de carpelos/lóculos do ovário; a
Brazilian Archives of Biology and Technology. Publicado em: 2008-08