Ocorrência de Kielmeyera nos "campos de Humaitá" e a natureza dos "campos" — Flora da Amazônia

Kubitski, Klaus

doi:10.1590/1809-43921979092401

Cited by 10 publications

(5 citation statements)

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“…1994). Although there some species of plants common to almost all the S. American savannas from Mexico to Paraguay such as Curatella americana L., most workers agree that the Amazonian savanna islands are considerably different from those of the cerrado and the llanos (Eiten 1978;Kubitzki 1979Kubitzki , 1983. Huber (1982) divided the savannas of Amazonas Territory in Venezuela into three distinct types.…”

Section: A Mmentioning

confidence: 99%

“…For example, in the Humaita-Puciari savan nas of Amazonia, Brazil contain such cerrado species as Morawetz 1986), Keilmeyera coriacea M art. (Kubitzki 1979;Janssen 1986), and Hirtella ciliata M art. (Prance 1972, figure 2).…”

Section: A Mmentioning

confidence: 99%

“…M any savanna species are easily dispersed (Kubitzki 1979(Kubitzki , 1983) and this explains their ability to migrate rapidly during times of drier climate. Kubitzki showed that several cerrado species with large diaspores such as Caryocar brasiliense Camb.…”

Section: A Mmentioning

confidence: 99%

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Islands in Amazonia

Prance

1996

Phil. Trans. R. Soc. Lond. B

115

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There are a number of habitats within the lowland Amazonian rainforest ecosystem that are functional islands. Those that are discussed are savannas, white sand campinas and caatingas, inselbergs and sandstone table mountains or tepuis. Each of these habitats is a series of isolated islands of vegetation and in some cases speciation has taken place between islands, especially the older tepuis, and in other cases there is still little differentiation due to more vagile diaspores and recent climatic changes. The effects of Pleistocene climatic changes that altered the balance between the distribution of savanna and rainforest is discussed.

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Section: A Mmentioning

confidence: 99%

Section: A Mmentioning

confidence: 99%

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Islands in Amazonia

Prance

1996

Phil. Trans. R. Soc. Lond. B

115

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“…The municipality of Humaitá has access roads through Amazonas State and Rondônia. In addition, it houses a larger number of higher education institutions, which facilitates research in 'terra firme' and floodplain areas (Campos, Ribeiro, Souza-Junior, Ribeiro-Filho & Almeida, 2012), Cerrado fields (Martins, Ferreira, Curi, Vitorino & Silva, 2006), and meadows (Kubitski, 1979). Notwithstanding, although Humaitá and Borba have the largest number of species records among the cities south of the Madeira river, subsampling may occur due to the low proportion of angiosperm species per 10 km 2 ( Figure 5).…”

Section: Resultsmentioning

confidence: 99%

Preliminary Angiosperm Checklist in an Area South of the Madeira River, Manicoré, Amazonas, Brazil

2020

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Due to the large extent of the Amazon rainforest, research has historically focused on easily accessible locations. Thus, much of this region has little information available about its richness and plant distribution. Located south of the Madeira river, Municipality of Manicoré has a high number of phytophysiognomies, which may indicate the existence of a greater diversity of plant species. Therefore, from the compilation of previously collected records and based on botanical expeditions, this study evaluated the diversity and richness of angiosperms in Manicoré. We found 801 species, 409 genera and 106 families. Our data record 47 new occurrences for Amazonas State. Of these new occurrences, 12 are also the first record for the northern region. In addition, we have identified a new vine species of the genus Mandevilla Lindl. Given the well-known sample deficiency of the Amazon region, and considering the countless anthropogenic pressures that cities south of the Madeira river have been facing, knowledge of flora becomes increasingly urgent.

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“…The floristic composition of Amazonian savannas includes some species from the Cerrado biome, some species from the Guianas and species of wide distribution through the Neotropical savannas (Bastos 1984, Dantas & Rodrigues 1982, Egler 1960, Gottsberger & Morawetz 1986, Janssen 1986, Lima 1958, Milliken & Ratter 1989, Takeuchi 1960, but is less rich in species than central Brazilian savannas (Kubitski 1979). .…”

Section: Introductionmentioning

confidence: 99%

Effects of annual fires on the production of fleshy fruits eaten by birds in a Brazilian Amazonian savanna

Sanaiotti

Magnusson

1995

J. Trop. Ecol.

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This study describes changes in the numbers of plant species fruiting during six years in I ha of Amazonian savanna on the right bank of the Tapajós River, Brazil. The work was based on fleshy fruits from tree and shrub-layer species eaten by birds. The area was burned in the first two years, protected during the following two years and burned again in the last two years. The number of tree species fruiting did not differ significantly between years with and without fire. The number of shrub-layer species fruiting was markedly reduced in years with fire, but the responses varied between species. Data on changes in shrub cover after two consecutive years of fire indicate that species also respond differently in terms of biomass lost due to fires. The two most abundant genera of shrubs, Miconia and Myrcia, had their cover reduced by up to 95% and 72% respectively. The area made available by the loss of shrubs was occupied mainly by the grass Paspalum carinatum. The fires and the decrease in the availability of fruits occurred during the season in which most species of birds breed. An interval of less than three years between fires is insufficient for shrub-layer species to recover.

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Ocorrência de Kielmeyera nos "campos de Humaitá" e a natureza dos "campos" — Flora da Amazônia

Cited by 10 publications

References 0 publications

Islands in Amazonia

Islands in Amazonia

Preliminary Angiosperm Checklist in an Area South of the Madeira River, Manicoré, Amazonas, Brazil

Effects of annual fires on the production of fleshy fruits eaten by birds in a Brazilian Amazonian savanna

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