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Original Papers • Rodriguésia 62 (2) • Apr-Jun 2011 • https://doi.org/10.1590/2175-7860201162212   copy

Physiognomy and structure of a seasonal deciduous forest on the Ibiapaba plateau, Ceará, Brazil1 1 Part of the Master thesis of the first author at Universidade Federal Rural de Pernambuco.

Fisionomia e estrutura de uma floresta estacional decídua no planalto da Ibiapaba, Ceará, Brasil

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

The Brazilian semiarid region is dominated by caatinga. However, other vegetation formations occur, including deciduous and semi-deciduous forests. This study describes physiognomy and structure of a forest on the sedimentary Ibiapaba plateau. All plants within one hectare were separated into three components: woody plants with perimeter at soil level (PSL) ≥ 9 cm (WCLP), woody plants with PSL ≥ 3 and ≤ 8.9 cm (WCSP), and herb/subwoody plants (HSwC). WCLP included 88 species (33 families), WCSP 50 species (23 families) and HSwC only 7 species (5 families). Total density, basal area, and maximum and average height of WCLP were 5683 plants/ha, 47 m2/ha, 18 and 5 m respectively. Total density and basal area of WCSP were 17500 plants/ha and 2.8 m2/ha, respectively. Density of HSwC was 9 plants/m2 and only 31% of the sampled area was occupied by this component.

Key words:
basal area; dry tropical forest; phytosociology; plant height

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