Data/hora: 10/06/2024 05:45:26

Provedor de dados: | 76
País: | Brazil
Título: | Abundância de microartrópodes do solo em fragmentos de mata com araucária no sul do Brasil
Autores: | Duarte,Marcelo Maisonette.
Data: | 2004-06-01
Ano: | 2004
Palavras-chave: | Soil microarthropods; Araucaria forest; Acari; Collembola; Habitat fragmentation.
Resumo: | The abundance of soil microarthropods from seven fragments of Araucaria Forest, Muitos Capões, Rio Grande do Sul, Brazil, was compared. The size of the fragments ranged from 0.25 ha to 35 ha, the two largest fragments are situated within the Aracuri Ecological Station and the remaining five are situated in a cattle ranching farm. In June 2000, three plots (10 m x 10 m) were established in the central area of each patch, and three soil cores (7 cm diameter x 6 cm deep) were taken per plot. The abundance of microarthropods in the upper six centimeters (soil + litter) varied between 63209 and 102704 ind.m-2, with oribatid mites (Acari, Cryptostigmata) being dominant in all fragments (between 46.9 % and 61.3 % of total individuals). Most microarthropod groups presented a decrease in abundance with decreasing fragment area, with a statistically significant difference between smaller and larger fragments. The proportion of oribatids also decreased with decreasing fragment area. The results suggest that the growing fragmentation process of Araucaria forests in southern Brazil, associated to a tendency for reducing the size of remnant fragments, can affect the abundance of soil microarthropods, and therefore, the quality and health of this ecosystem.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000200008
Editor: | Museu de Ciências Naturais
Relação: | 10.1590/S0073-47212004000200008
Formato: | text/html
Fonte: | Iheringia. Série Zoologia  v.94 n.2 2004
Fonte: | info:eu-repo/semantics/openAccess