Mayfly diversity in the brazilian tropical headwaters of Serra do Cipó

Brazilian Archives of Biology and Technology

Michael Goulart¹  Marcos Callisto¹ 

[1] ,Universidade Federal de Minas Gerais ICB Departamento de Biologia GeralBelo Horizonte MG ,Brasil

关键词: Ephemeroptera;    habitat diversity;    substrate association;    conservation;    river ecology;   

DOI  :  10.1590/S1516-89132005000800015

来源: SciELO

【 摘 要 】

The objectives of this study were to evaluate spatial and seasonal distribution, assemblage structure and substrate associations of mayfly nymphs in five lotic ecosystems in the headwaters of the Doce River and São Francisco River watersheds, Brazil. Samples were taken in 24 sampling stations during rainy and dry seasons in 1998. In total, 7,066 organisms were collected, belonging to 27 genera and 6 families of Ephemeroptera. The dominant taxa were Americabaetis, Paracloeodes, Leptohyphes and Hagenulus. During the rainy period, the São Francisco River watershed showed higher taxonomic richness, diversity and evenness, while in the dry period, the taxonomic richness was higher in Doce River watershed. No significant differences were found in the taxonomic richness, diversity, evenness and density of mayfly assemblages between the two studied sampling periods. The results suggested that the diversity of the mayfly assemblages in tropical headwaters of Serra do Cipó would be probably due to ecosystem and watershed characteristics.

【 授权许可】

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