Abstract

SOUZA, Maria Cristina de; GUILLAUMET, Jean-Louis  and  AGUIAR, Izonete de Jesus Araujo. Occurrence and distribution of the pteridophytes in the Walter Egler Forest reserve, Central Amazonian, Brazil. Acta Amaz. [online]. 2003, vol.33, n.4, pp. 555-562. ISSN 0044-5967.  http://dx.doi.org/10.1590/S0044-59672003000400003.

The occurrence of Pteridophytes was investigated along a transect at the Walter Egler Forest reserve, located 64 km from Manaus in the municipality of Rio Preto da Eva. The group occurs on the three landscapes observed in the area (lowland, slope and plateau) with a both qualitative and quantitative difference. Three hundred and seventy five (375) individuals were established, distributed in 8 families, 10 genera and 17 species; among epiphytes, hemepiphytes, herbaceous and arboreal. Of the 8 families, 4 occur on all landscapes: Dennstaedtiaceae, Hymenophyllaceae, Dryopteridaceae and Lomariopsidaceae, whereas, Cyatheaceae and Vittariaceae occur only on lowland. Of the 17 identified species, 7 occur only lowland, 3 on slope, and 5 are common on all landscapes.

Keywords : Pteridophytes; understory; habitat; habit.