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| Registros recuperados: 24 | |
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| Prance,Ghillean T.; Anderson,Anthony B.. |
| Abstract A field study of the floral biology of two species of Nymphaea (Nymphaeaceae) wp.s made. N. rudgeana G.F.W. Meyer, a night flowering species, was studied around Manaus and Belém. It is visited by the scarab beetle Cyclocephala castanea Oliv. in the Manaus vicinity and by C. verticalis Burm. in the Belém vicinity. N. rudgeana is protogynous and cross-pollination is quite frequent. N. ampla (Salisb.) DC., a day flowering species, was studied near Salvador, Bahia. This species is visited by the bee species Trigona spinipes. N. ampla is not protogynous and is largely self-fertilized, although a small amount of cross-fertilization may occur through the activity of the Trígona bees. |
| Ano: 1976 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671976000200163 |
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| Prance,Ghillean T.; Silva,Marlene Freitas da; Albuquerque,Byron Wilson; Araújo,Izonete de Jesus da Silva; Carreira,Léa Maria Medeiros; Braga,Marilene Marinho Nogueira; Macedo,Miramy; Conceição,Pedro Nonato da; Lisbôa,Pedro Luiz Braga; Braga,Pedro Ivo; Lisbôa,Regina Célia Lobato; Vilhena,Raimunda Conceição Queiroz. |
| Resumo Estudo das Rhizophoraceas da Amazônia abrangendo 5 gêneros: Rhizophora, Cassipourea, Sterigmapetalum, Polygonanthus e Anisophyllea. Doze espécies dos referidos gêneros são estudadas e descritas. Novos taxa não foram encontrados, porém, diversos nomes foram colocados em sinonímia. Apresentada a descrição do pólen de algumas espécies. |
| Ano: 1975 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671975000100005 |
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| Prance,Ghillean T.; Rodrigues,William A.; Silva,Marlene F. da. |
| Resumo Feito um inventário de um hectare de mata de terra firme no latossolo. A área estudada está situada no km 30 da estrada Manaus-Itacoatiara e constitui uma parte de um estudo ecológico, considerada "mata testemunha", de uma área experimental de 12 hectares. Esta mesma área, está também sendo estudada por diversos biólogos do INPA. A mata apresenta uma altura média, e uma cubagem de madeira baixa. É muito interessante devido à diversidade florística, tendo 179 diferentes espécies de indíviduos de 15 cm de diâmetro ou mais, e mais 56 espécies de 5 a 14,9 cm de diâmetro. O total de espécies lenhosas é de 235, em um hectare. A espécie mais freqüente é Eschweilera odora (Poepp.) Miers (Lecythidaceae), com 26 árvores o que representa 7,43% do total. Em... |
| Ano: 1976 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671976000100009 |
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| Anderson,Anthony B.; Prance,Ghillean T.; Albuquerque,yron W. P. de. |
| Resumo Na Amazônia, na região do rio Negro, os solos de areia branca dispersos com sua vegetação associada, conhecida como campina amazônica, podem ter influência considerável sobre a ecologia total dos sistemas de rios de água preta. Este trabalho apresenta uma descrição da vegetação lenhosa de uma campina amazônica e de sua campinarana associada. Para que essa vegetação seja melhor interpretada, os autores opinam em considerá-la dividida em dois tipos: campina e campinarana. A campinarana, por sua vez, é subdividida em dois subtipos: campina aberta e campina sombreada. A estrutura e a composição da vegetação de cada tipo ou subtipo foram estudadas com detalhes. Com base no testemunho de sua vegetação, os autores concluem que a campinarana representa uma... |
| Ano: 1975 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671975000300225 |
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| Prance,Ghillean T.. |
| Abstract In recent years it has generally been accepted that Amazonia was subject to long dry periods in the late Pleistocene and post-Pleistocene which induced forest cover to a few limited areas or refuges. It has been proposed that the subsequent genetic isolation into separate populations is a mnjor factor in the evolution of the species diversity within the lowland forest of Amazonia. Most of the previous evidence for this theory is based on studies of animals, for example: lizards, butterflies, and birds. Here data are presented to confirm the theory of forest refuges using evidence from phytogeography. Distribution patterns of the lowland species of the woody plant families Caryocaraceae, Chrysobalanaceae, Dichapetalaceae and Lecythidaceae are... |
| Ano: 1973 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671973000300005 |
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| Prance,Ghillean T.. |
| Abstract An ethnobotanical comparison is made between the four Indian tribes the Denís, the Jamamadis, the Makús, and the Waikás. The data was collected during general plant collecting expeditions in the tribal areas, and is not presented as a complete ethnobotanical study of each tribe. It is a comparison of the botanical data which we were able to gather during short visits to each tribe. A table is given comparing the cultivated crops of each tribe. The following types of plant uses are discussed and compared: fish poisons, arrow poisons, other poisons, narcotic and hallucinogenic snuffs, coca, medicines, contraceptives, edible fruit and fungi and a few other miscellaneous plant uses. Information on the edible fungi eaten by the Waikás is presented for... |
| Ano: 1972 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671972000200007 |
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| Prance,Ghillean T.. |
| SUMMARY Five new taxa of Amazonian Chrysobalanaceae are described based on recently collected material: Couepia cidiana Prance, Hirtella radamii Prance, Licania heteromorpha Benth. var. revoluta Prance, Licania miltonii Prance, and Licania tocantina Prance. The continued collection of many undescribed taxa indicates that there is still much to be done in the basic botanical inventory of Amazonia. |
| Ano: 1983 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671983000100021 |
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| Prance,Ghillean T.. |
| Abstract In 1972 the author described the new species Acioa edulis (Chrysobalanaceae) to name the Castanha de cutia, a plant which is economically important because of its edible fruit. The original description was based on fruiting material only. Recently collected flowering material has shown that the original generic assignment was incorrect, and so it is now transferred to Couepia the correct genus, and the flowers are described for the first time. |
| Ano: 1975 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671975000200143 |
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| Hill,Robert J.; Prance,Ghillean T.; Mori,Scott A.; Steward,William C.; Shimabukuru,Darcy; Bernardi,João. |
| Resumo Ao longo de um trecho de 2.174 km do rio Solimões, partindo de Iquitos. Peru, a Manaus, Brasil, foi realizado um estudo eletroforético para determinação da quantidade de variação genética em três taxa de leguminosas (Aeschynomene sensitiva Sw. var. amazonica Rudd, Papilionoideae; Mimosa Pigra L., Mimosoideae). A variabilidade genética foi expressa em termos de: 1) grau de polimorfismo enzimático (P'), e 2) heterozigosidade populacional média (H'). Foram examinados cinco sistemas enzimáticos: leucina-aminopeptidase (LAP), glutamato-dehidrogenase (GDH). fosfoglucomutase (PGM), fosfoglucoisomerase (PGI), e fosfatase ácida (AcPH). Os taxa ribeirinhos apresentam condições excepcionais para estudos experimentais sobre biologia de população e evolução. A... |
| Ano: 1978 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671978000200183 |
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| Prance,Ghillean T.; Schubart,Herbert O. R.. |
| Summary The origins of the open areas of white sand campinas of the lower rio Negro is discussed. Campinas are compared with the denser campina forests or caatingas of the upper rio Negro. It is concluded that the campinas are areas of white sand forest cleared by Indians. Evidence from pottery shards and radiocarbon dating of charcoal deposited in the soil demonstrates that the campinas were occupied by Indians of the Guarita subtradition around 800 A.D. The open campina areas show a gradual sucession to more closed type of campina to campina forest, the climax on the white sand. Recolonization after Indian clearing is extremely slow on white sand because of limiting factors such as nutrients and excessive drainage in the dry season. |
| Ano: 1977 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671977000400567 |
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| Prance,Ghillean T.; Nelson,Bruce W.; Silva,MarIene Freitas da; Daly,Douglas C.. |
| A review of the history and results of the first eight years of fieldwork of Projeto Flora Amazônica is given. This binational plant collecting program, sponsored by the Conselho Nacional de Desenvolvimento Científico e Tecnológico and the National Science Foundation, has mounted 25 expeditions to many parts of Brazilian Amazonia. Expeditions have visited both areas threatened with destruction of the forest and remote areas previously unknown botanically. The results have included the collection of 32,976 members of vascular plants, 16, 482 of cryptogams, as well as quantitative inventory of 18.67 hectares of forest with the collection of 7,294*** numbers of sterile vouncher collections. The non-inventory collections have been made in replicate sets of... |
| Ano: 1984 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671984000300005 |
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| Prance,Ghillean T.. |
| Abstract Four new species of Licania and two of Hirtella are described and additional notes are given on three other little known species of Chrysobalanaceae. All the new species have been collected recently since 1972 when the author monographed the neotropical Chrysobalanaceae. Three of the new species are from Amazonia, two from Panama, and one from Pacific coastal Colombia confirming that these three areas still have many undescribed species and are in need of further exploration. |
| Ano: 1978 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671978000400577 |
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| Prance,Ghillean T.. |
| Abstract The Lecythidaceae of a 2500 m2 area of the secondary forest of INPA was studied. The 97 individuals of Lecythidaceae present indicated a high number of primary forest species. It is concluded that most of the area was not burnt when the original forest was cut, and the regeneration of primary forest species is much greater in areas which are not burnt over after felling. This is further supported by parallel studies of Bignoniaceae and Meliaceae of the same area. |
| Ano: 1975 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671975000300261 |
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| Keel,Shirley H. Kuo; Prance,Ghillean T.. |
| Summary The vegetation analysis of a Central Amazonian igapó, a forest under severe environmental stress — poor soil and seasonal flooding, reveals the existence of the dominant species Myrciaria dubia with a M.I.V. 75. The Shannon diversity index of this forest is 4.358 bits per individual, of which 75.73% is attributable to the evenness value. Species distributions change along the moisture gradient. Though many species exhibit the tendency of zonal distribution, the boundaries of zones are not abrupt. The authors suggest that species distribution is the result of physiological difference to flood tolerance. Further research should be directed to the comparison of flood tolerance of the plants which occur in the following three areas: permanent... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1979 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671979000700645 |
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| Absy,Maria Lúcia; Prance,Ghillean T.; Barbosa,Edelcílio Marques. |
| Foi feito um inventário de seis hectares de floresta de. terra firme na área de influência da Estrada Cuiabá-Porto Velho (BR-364). Destes seis hectares, dois foram feitos no Município de Jaru, vicinal 605 e quatro na área do Projeto Machadinho, vicinais MC-2, MA-9. A flonesta apresenta uma altura média de 15m e um total de 278 espécies diferentes, representadas por 2.235 indivíduos e 57 famílias nos seis hectares estudados. Os hectares I e II do Município de Jaru apresentaram, respectivamente, uma diversidade florística de 113 e 136 espécies de 10cm ou mais de diâmetro (DAP), enquanto que os hectares III, IV, V e VI da área do Projeto Machadinho apresentaram respectivamente, 103, 115, 122 e. 121 espécies. A espécie mais importante no hectare I é o breu... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1987 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671987000200085 |
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| Registros recuperados: 24 | |
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