Variation of α and β Diversity of Fish Assemblages in an UpstreamDownstream Gradient of a Tropical River, Central Brazil

Abstract

This study was developed along the main channel of João Leite River, Upper Paraná River Basin, Goiás State. Three stretches with 500m length were predetermined and fish species sampled in each on them Fish sampling was carried during dry season using a set of nets with different mesh sizes (12, 15, 20, 25, 30, 35, 40 and 50mm between knots) and five traps. The α diversity was verified through ecological descriptors such as species richness, abundance, Shannon-Wiener index and evenness while β diversity by Morisita-Horn index. Species richness and diversity increased towards upstream-downstream as expected by river continuum concept. Species composition turnover between the stretch localized in the headwater (JL1) and that in the river mouth (JL3) may be related with hydrological and morphological conditions of the environment and with the habitat type explored by species.

Authors and Affiliations

Andréia Oliveira de Santana| Mestre em Ecologia e Evolução pela Universidade Federal de Goiás (Goiás/Brasil), Francisco Leonardo Tejerina-Garro| Doutor em Ecologia de Sistemas Aquáticos Continentais pela Université Montpellier 2 - Sciences et Techniques (França). Docente da Pontifícia Universidade Católica de Goiás, do Centro Universitário de Anápolis – UniEVANGÉLICA e da Universidade Federal de Goiás (Goiás/Brasil), Rodrigo Assis de Carvalho| Doutor em Ecologia e Evolução pela Universidade Federal de Goiás (Goiás/Brasil)

Keywords

Related Articles

Brazil x China Trade Frictions: Overview and a brief case analysis

The present article aims to describe the current market and economical reality regarding international trade and its imperfections (frictions) confronting China, specially those originated in one of its largest commer...

TECNOLOGIA, CULTURA E MEIO AMBIENTE: DETERMINANTES DAS PRÁTICAS DO ALEITAMENTO MATERNO NO BRASIL

A importância do aleitamento materno foi consagrada no século XX assim como sua total compatibilidade com a vida moderna das mulheres. Inúmeras são as evidências científicas comprovando os benefícios do leite ma...

Three Hypotheses Concerning the Human Dimension of the Atlantic Forest´s Biodiversity

The environmental legacy of contemporary ecosystems is the product of the historical relation of past population with the environment. We propose three hypotheses of the human dimensions of biodiversity of the Atlantic...

Download PDF file
  • EP ID EP15384
  • DOI 10.21664/2238-8869.2014v3i1.p106-118
  • Views 344
  • Downloads 14

How To Cite

Andréia Oliveira de Santana, Francisco Leonardo Tejerina-Garro, Rodrigo Assis de Carvalho (2014). Variation of α and β Diversity of Fish Assemblages in an UpstreamDownstream Gradient of a Tropical River, Central Brazil. Fronteiras: Journal of Social, Technological and Environmental Science, 3(1), 106-118. https://europub.co.uk/articles/-A-15384