Terrestrial isopod diversity in the subtropical neotropics: Itapuã State Park, southern Brazil

Iheringia. Série Zoologia

Maurício P. Almerão²  Milton De S. Mendonça Jr.¹  Aline F. Quadros²  Ezequiel Pedó¹  Luiz G. R. Silva¹  Paula Beatriz Araujo² 

[1] ,Universidade Federal do Rio Grande do Sul Instituto de Biociências Departamento de ZoologiaPorto Alegre RS ,Brasil

关键词: Diversity;    terrestrial isopods;    Oniscidea;    Crustacea;    soil fauna;    Diversidade;    isópodos terrestres;    Oniscidea;    Crustacea;    fauna de solo;   

DOI  :  10.1590/S0073-47212006000400012

来源: SciELO

【 摘 要 】

We analysed species abundance and composition during one year of sampling at Itapuã State Park, a conservation unit in the State of Rio Grande do Sul, southern Brazil. Samples were collected monthly from May 2003 to April 2004 along a 4 km forest trail divided in three transects along the slopes of a small hill. Terrestrial isopods were hand searched by three people for 40 minutes at two sampling sites along each transect, summing 240 minutes of sampling effort per transect per month. Six species distributed in six families were found. The collector curve stabilised when half the samples were taken, demonstrating sampling sufficiency: analytical estimates did not predict more species to be found in the trail. Atlantoscia floridana (van Name, 1940) was dominant in all transects. Abundance varied along the year with a summer and a winter peak, but peaks were not consistent among transects. The first part of the trail, used for ecotourism, was less diverse, had less species (4 as compared to 6 in the other transects), and was thus also less similar in composition.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License