Comparação dos parâmetros fitossociológicos entre três estratos de um fragmento de floresta ombrófila mista

CERNE

Machado, Sebastião do Amaral²  Zamin, Naiara Teodoro²  Augustynczik, Alan Lessa Derci²  Menegazzo, Caroline Sanches¹  Nascimento, Rodrigo Geroni Mendes² 

[1]$$

[2]Universidade Federal do Paraná, Curitiba, Brasil$$

关键词: Census;    secondary forest;    value of coverage;    relative dominance.;   

DOI  :  10.1590/S0104-77602013000300002

来源: Universidade Federal de Lavras-UFLA

【 摘 要 】

Phytosociological studies based on sampling have been very common in the last 20 years, however, they are rarely carried out using complete enumeration of trees (census). This research compare the phytossociological parameters between three different strata from a remnant of Ombrophylous Mixed Forest (OMF), which are: OMF Montana, Border OMF Montana and OMF Alluvial. The area of 13.71 was topographically divided in blocks of 50 x 50 meters for a better control of the 100% forest inventory (census). All trees with CBH (circumference measured at 1,30 m above ground) ≥ 31,5 centimeters were measured, georeferencied, numbered, painted at DBH and identified at species level. In the strata OMF Montana the species with the highest Value of Coverage (VC) was Araucaria angustifolia, with 30.6%, followed by Casearia sylvestris with 25.8%. In the Border OMF Montana the species that succeeded Araucaria angustifolia (29.0%) was Gochnatia polymorpha with 27.2% of VC. The third strata, OMF Alluvial, presented as predominant species Schinus terebinthifolius (55,5%), followed by Sebastiania commersoniana (27,7%), both characteristics of alluvial environments. In the three strata there was prevalence of secondary pioneer species, proving that the area is in a secondary stage of ecological succession due to past exploratory process.

【 授权许可】

Unknown