Vol 11 Num 3




Understory structure in two successional stages of Semi-deciduous Seasonal Forest remnant of Southern Brazil

Geraldo Ceni Coelho

Universidade Federal da Fronteira Sul - UFFS
Av. Presidente Getúlio Vargas, 609N Edifício Engemede - 2° andar Centro 89812-000, Chapecó, Brazil
email: cenicoelho@gmail.com

Marivana da Silva Rigo

UNIJUÍ
Undergraduate of Ciências Biológicas, UNIJUÍ. Rua do Comércio, 3000, Universitário, 98700 000, Ijuí, Brazil
Juliana Boniatti Libardoni

UNIJUÍ
Undergraduate of Ciências Biológicas, UNIJUÍ. Rua do Comércio, 3000, Universitário, 98700 000, Ijuí, Brazil
Rosemeri de Oliveira

UNIJUÍ
Undergraduate of Ciências Biológicas, UNIJUÍ. Rua do Comércio, 3000, Universitário, 98700 000, Ijuí, Brazil
Glaci Benvenuti-Ferreira

UNIJUÍ
Undergraduate of Ciências Biológicas, UNIJUÍ. Rua do Comércio, 3000, Universitário, 98700 000, Ijuí, Brazil

keywords
biodiversity conservation, biological nitrogen fixation, secondary succession, Atlantic Forest of Uruguai River Basin, Subtropical Forest

publication date: 07-18-2011





Abstract
The knowledge of structure and composition of forest strata contributes to understanding the conservation status and dynamics of plant communities. The study of forest understory is important to the knowledge of the succession process. The Seasonal Subtropical Forest remnant named Mato do Silva (27°55'26" S, 53°53'15" W) was studied aiming to describe the structure of understory in the late successional forest (LF) and in the young secondary forest (SF), an 11 years old post-agricultural site with canopy dominance of Ateleia  glazioveana  Baill. The phytosociological survey was carried out through the point quarter method and included individuals of tree and shrub species from 0.5 to 3.0 m of height. The sampling consisted of 384 individuals in LF (67 species) and 284 individuals in SF (20 species). A total of 79 species were observed, and only eight species occurred in both areas. The specific diversity (H') was 3.45 and 2.42 nats in the understory of LF and SF, respectively. The Pielou's evenness index (J) was 0.85 to LF and 0.80 to SF. Cupania  vernalis  Camb. and Psychotria  leiocarpa  Müll. Arg. were the prominent species in the LF while Ateleia  glazioveana  and Solanum  mauritianum  Scop. were outstanding in the SF understory. Shade-tolerant and late secondary tree species occurred in large proportion in the LF forest, while pioneers and early secondary tree species predominated in the SF. In addition, certain dominant species in the understory of the SF were absent in the LF understory, such as A.  glazioveana , Solanum  compressum  L. B. Sm. and Downs, Helietta  apiculata  Bentham and Gledtisia  amorphoides  (Griseb.) Taubert, which indicates that such species are associated to early stages of forest succession. G.  amorphoides is considered an endangered species, and the early successional stages could be necessary for conservation of this species. A decrease in the pH and mineral nutrient levels in the soil was linked to the successional process, indicating the transference of nutrients to the aboveground biomass.

how to quote this paper
Coelho, G. C.; Rigo, M. S.; Libardoni, J. B.; Oliveira, R. and Benvenuti-Ferreira, G. Understory structure in two successional stages of Semi-deciduous Seasonal Forest remnant of Southern Brazil. Biota Neotrop.  Jul/Sep 2011 vol. 11, no. 3 https://www.biotaneotropica.org.br/v11n3/en/abstract?article+bn01011032011 ISSN 1676-0603.

Cited species
check for this species in other resources Ateleia  glazioveana 
check for this species in other resources Cupania  vernalis 
check for this species in other resources Gledtisia  amorphoides 
check for this species in other resources Helietta  apiculata 
check for this species in other resources Psychotria  leiocarpa 
check for this species in other resources Solanum  mauritianum 
check for this species in other resources Solanum  compressum 



Fundação de Amparo | Pesquisa do Estado de São Paulo, Fapesp
Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq
© BIOTA NEOTROPICA, 2011