Natural regeneration in a mixed ombrophilous forest remnant in southern Brazil

被引:0
|
作者
dos Passos, Manuela Gazzoni [1 ]
do Prado, Geisa Percio [1 ]
Fontana, Claudia [2 ]
Zonta, Edilvane Ines [1 ]
Bianchini, Edmilson [3 ]
机构
[1] Univ Oeste Santa Catarina, Campus Chapeco,Av Nereu Ramos 3777D, BR-89801000 Chapeco, SC, Brazil
[2] Univ Sao Paulo, Colegio Agr Luiz de Queiroz, Dept Ciencias Florestais, Ave Padua Dias 11,Caixa Postal 9, BR-13418900 Piracicaba, SP, Brazil
[3] Univ Estadual Londrina, Programa Pos Grad Ciencias Biol, Campus Univ,Caixa Postal 10011, BR-86057970 Londrina, Parana, Brazil
基金
美国国家科学基金会;
关键词
Araucaria; Atlantic forest; biodiversity; conservation; disturbance; heterogeneity; tree species;
D O I
10.3897/neotropical.16.e58188
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
The study of forest regeneration allows the diagnosis of conservation status of fragments and estimating population parameters that are essential for management projects. This study evaluated the structure, diversity and dynamics of the tree regenerating component of a remnant of mixed ombrophilous forest, aiming to support management actions for this forest type. The study was developed at the Parque Estadual das Araucarias (PEAR), located in the western region of the state of Santa Catarina, southern Brazil. A total of 100 plots of 25 m(2) (0.25 ha) were allocated, all individuals with height = 1.0 m and DBH < 5 cm were sampled. Shannon's diversity index (H'), Pielou's equability index (J) and total natural regeneration rate (TNR) were estimated. We sampled 1,425 individuals from 99 species and 39 families, with an estimated total density of 5,700 individuals by hectare. The richest families were Fabaceae (13), Myrtaceae (10) and Lauraceae (7). The H' was 3.76 and the J was 0.80. The TNR rate ranged from 0.05 to 8.12%, highlighting Trichilia elegans, with the highest rate and Araucaria angustifolia with low potential for natural regeneration. The analysis of the results indicated a high diversity in the regenerating component of the PEAR compared to other studies, probably because the area presents itself as a successional mosaic due to past disturbances.
引用
收藏
页码:167 / 183
页数:17
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