Composição florística e análise estrutural da floresta primária de terra firme na bacia do rio cuieiras, Manaus-Am
This study dealt with vegetation characterization and horizontal structure analysis of a plant species community, and it was carried out at ZF-2 Tropical Forestry Experimental Station of the National Institute for Research in the Amazon (INPA). The climate is characterized as “Amw”, which means w...
| Autor principal: | Carneiro, Vilany Matilla Colares |
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| Grau: | Dissertação |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/12736 http://lattes.cnpq.br/6276022243327082 |
| Resumo: |
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This study dealt with vegetation characterization and horizontal structure analysis of a plant
species community, and it was carried out at ZF-2 Tropical Forestry Experimental Station of
the National Institute for Research in the Amazon (INPA). The climate is characterized as
“Amw”, which means warm and humid all year long. Floristic and phytosociologic surveys
were done over two transects (East-West and North-South) measuring 20 x 2500 m each, which
were stratified by plateau and “baixio”. Each transect was divided into 125 sample units of 20 x
20 m each, where botanical samples were collected for identification besides information
related to diameter at breast height (dbh) of 10 cm. For this study only plateau and “baixio”
were used for further comparisons, therefore, 7 hectares were used instead of 10 ha of the two
transects together. The floristic composition of the 7-ha (plateau + “baixio”) site is represented
by 737 species, 238 genera and 59 botanical families. The richest families in terms of species
are: Sapotaceae (69 species), Chrysobalanaceae (44), Lauraceae (44), Lecythidaceae (39),
Fabaceae (39) and Mimosaceae (38). In terms of individual species, the most important are:
Oenocarpus bataua Mart., Eschweilera wachenheimii (Benoist) Sandwith, Eperua glabriflora
(Ducke) R.S. Cowan, Hevea guianensis Aubl., and Scleronema micranthum Ducke. The
floristic composition in plateau is represented by 533 species, 187 genera and 53 families with
623 individuals per hectare and basal area equivalent to 28.3 m2ha-1. The richest families in
plateau are: Sapotaceae (61 species), Lecythidaceae (36) and Burseraceae (27). The three most
important families are: Lecythidaceae, Sapotaceae and Fabaceae. The most important species
are: Eschweilera wachenheimii (Benoist) Sandwith, Eschweilera truncata A.C. Sm.,
Micrandropsis scleroxylon W.Rodr., Eschweilera coriacea (DC.) Mart. ex Berg. and
Eschweilera pseudodecolorans S.A. Mori. The floristic composition in “baixio” is represented
by 461 species, 177 genera and 50 families with 624 individuals per hectare and basal area
equivalent to 29.1 m2ha-1. The richest families in “baixio” are: Sapotaceae (37 species),
Fabaceae (33) and Chrysobalanaceae (28). The two most important families are: Arecaceae and
Euphorbiaceae. The most important species are: Oenocarpus bataua Mart., Eperua glabriflora
(Ducke) R.S. Cowan, Micrandra siphonioides Benth. and Vitex sprucei Briq.. In terms of
occurrence exclusivity, plateau presented 9 families, 60 genera and 281 species, while “baixio”
presented 6 families, 54 genera and 212 species. |