Reproductive Phenology
Mostrando 13-24 de 104 artigos, teses e dissertações.
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13. Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest
ABSTRACT Alcantarea nahoumii occurs exclusively in the state of Bahia, Brazil, and is classified as vulnerable due to deforestation and frequent fires in the region. Knowledge of floral and reproductive biology is fundamental to understanding ecological interactions, as well as the reproductive success of plant species. The objective of this study was to eva
Acta Bot. Bras.. Publicado em: 2017-12
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14. The influence of El Niño and edge effects on the reproductive phenology and floral visitors of Eschweilera tetrapetala Mori (Lecythidaceae), an endemic species of the Atlantic Forest of northeastern Brazil
ABSTRACT We compared the reproductive phenology and floral visitors of Eschweilera tetrapetala growing along the edge and in the interior of a submontane forest in the Chapada Diamantina mountains, Bahia State, Brazil. We sought to determine if there were inter-annual differences in intensity and seasonality associated with environmental conditions, and if t
Acta Bot. Bras.. Publicado em: 19/10/2017
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15. Phenology of the multi-use tree species Carapa guianensis in a floodplain forest of the Amazon Estuary
ABSTRACT Carapa guianensis is a multi-use tree species that is used for the production of timber and non-timber forest products (NTFPs) that are used and sold by rural Amazonian populations. Here we aimed to evaluate the phenophases of C. guianensis in várzea forest and relate them to climatic seasonality. Phenophases of flowering (flower buds and open flow
Acta Bot. Bras.. Publicado em: 2016-12
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16. Does inter-plant variation in sprouting time affect the growth/reproduction trade-off and herbivory in a tropical tree species?
ABSTRACT The timing of phenological events varies within and among populations, affecting the performance of individual plants differently. We evaluated the effects of relative variation in sprouting time on the display of reproductive events, vegetative growth and herbivory in Copaifera langsdorffii (Fabaceae). A total of 93 trees of C. langsdorffii was mon
Acta Bot. Bras.. Publicado em: 10/11/2016
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17. Morpho-anatomical and morphometric studies of the floral structures of the distylous Oldenlandia salzmannii (Rubiaceae)
ABSTRACT The genus Oldenlandia (Rubiaceae) has a conflicting generic delimitation, with representatives that show different floral syndromes. Oldenlandia salzmannii is a marshy herb that is widespread in South America. It is heterostylous, specifically distylous, and self-compatible. Recent molecular phylogenetic studies found that this species forms a clade
Acta Bot. Bras.. Publicado em: 10/11/2016
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18. Diurnal flight periodicity of a Neotropical ant assemblage (Hymenoptera, Formicidae) in the Atlantic Forest
ABSTRACT In this study we document for the first time flight patterns along a 24 h time range for an ant assemblage in one of the most diverse ecosystems on Earth, the Brazilian Atlantic Forest. Malaise traps were used to analyze the diurnal nuptial flights of a Neotropical ant assemblage during five days. Traps captured 802 individuals, revealing a remarkab
Rev. Bras. entomol.. Publicado em: 2016-09
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19. Reproductive phenology of the American Bullfrog in subtropical Brazil: photoperiod as a main determinant of seasonal activity
RESUMO A rã-touro americana continua invadindo ecossistemas em todo o mundo, causando declínios e extinções nas populações. Em sua distribuição nativa, a espécie apresenta estação reprodutiva prolongada e grande fertilidade. Contudo, dados sobre a fenologia reprodutiva da espécie ex-situ em localidades invadidas provêm principalmente de relatos
An. Acad. Bras. Ciênc.. Publicado em: 11/07/2016
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20. Reproductive phenology, seed removal and early regeneration in relation to distance from parental plants of a native palm in small Atlantic forest fragments
ABSTRACT The Brazilian Atlantic Forest is a global biodiversity hotspot, but most of what remains are small fragments. Small fragments are often harsh environments for forest plant recruitment due to edge effects and the loss of frugivorous animals that provide seed dispersal. We recorded the one-year reproductive phenology of the keystone palm Syagrus roman
Acta Bot. Bras.. Publicado em: 01/04/2016
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21. The reproductive biology of the early-divergent genus Anaxagorea (Annonaceae), and its significance for the evolutionary development of the family
ABSTRACT Data of six studied Neotropical Anaxagorea species are analyzed and discussed with respect to the population structure, flowering phenology, flower morphology, anthesis, scent emission, thermogenesis, floral visitors, breeding system, fruit-set and seed dispersal. The probably reason for the patchy distribution of small populations of Anaxagorea spe
Acta Bot. Bras.. Publicado em: 15/03/2016
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22. Reproductive phenology and sharing of floral resource among hummingbirds (Trochilidae) in inflorescences of Dahlstedtia pinnata (Benth.) Malme. (Fabaceae) in the Atlantic forest
A proposta do presente estudo foi investigar a fenologia reprodutiva e a partilha de recurso floral (néctar) de Dahlstedtia pinnata (Benth.) Malme. (Fabaceae), endêmica de Mata Atlântica, entre beija-flores. Para a fenologia considerou-se a presença de estruturas reprodutivas nas plantas e para a partilha de recurso floral foi examinada a frequência de
An. Acad. Bras. Ciênc.. Publicado em: 11/11/2014
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23. Phenology, caudex growth and age estimation of Cyathea corcovadensis (Raddi) Domin (Cyatheaceae) in a subtropical forest in southern Brazil
Cyathea corcovadensis (Raddi) Domin occurs in northeastern, southeastern and southern Brazil, being widely distributed in the last. This was a three-year study, conducted from August 2008 to July 2011, in which we evaluated C. corcovadensis in a subtropical forest in southern Brazil. For the first year (August 2008 to July 2009), we monitored 30 plants on a
Acta Bot. Bras.. Publicado em: 2014-06
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24. Floristics and Reproductive Phenology of Trees and Bushes in Central West Brazil
Fatores ambientais, tais como temperatura, solo, fotoperíodo e precipitação podem determinar o ambiente físico favorecendo a ocorrência de espécies e interferir no período reprodutivo das plantas. Este trabalho foi realizado através de excursões mensais para uma encosta da Serra de Maracaju, entre dezembro de 2009 e novembro de 2010. As amostras for
An. Acad. Bras. Ciênc.. Publicado em: 29/04/2014