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| Feitosa,Yuri Oliveira; Absy,Maria Lúcia; Latrubesse,Edgardo Manuel; Stevaux,José Cândido. |
| The present study reconstructs the paleovegetation of a varzea (seasonally flooded) forest in the central parts of the Madeira River floodplain in Brazil using palynological data. Forty-nine cut-bank sediment samples from the Madeira River were processed in the study; from these, ten samples contained pollen: two contained pollen from the Middle Pleniglacial age, one contained pollen from the Tardiglacial age, six contained pollen from the Holocene, and one contained more recently deposited pollen. The Middle Pleniglacial pollen belonged to a primary succession varzea forest, while the Tardiglacial pollen represented a late succession varzea forest. On the other hand, the three Holocene samples showed the characteristic composition of chavascal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cut-bank sediment; Late Pleistocene-Holocene; Palynology; Southern Amazonian tributary; Varzea. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000100120 |
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| Quaresma,Adriano C.; Piedade,Maria Teresa F.; Feitosa,Yuri Oliveira; Wittmann,Florian; Steege,Hans ter. |
| ABSTRACT Research focusing on assemblages of vascular epiphytes in the Amazon are scarce. This is especially true for Amazonian floodplain forests, for which only two previous studies have been published. We compared composition, richness and structure of epiphyte assemblages in white-water and black-water floodplains (várzea and igapó) in Central Amazonia in order to close knowledge gaps concerning the distribution and richness of epiphytes. We established sixteen 25x25 m plots in each forest type, and counted and identified all species of vascular epiphytes occurring on trees with a diameter at breast height (DBH) ≥10 cm. We observed a clear distinction in epiphytic species composition (r2=0.83, p=0.001) and diversity (t=3.24, P=0.003) between the two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Biodiversity; Floodplains; Igapó forests; Várzea forests. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400686 |
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