Open AccessMÉTODOS QUANTITATIVOS PARA MENSURAR A DIVERSIDADE TAXONÔMICA EM PEIXES DE RIACHO
Author(s) -
Naraiana Loureiro Be,
Luciano Fogaça de Assis Montag
Publication year - 2021
Publication title -
oecologia australis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.235
H-Index - 19
ISSN - 2177-6199
DOI - 10.4257/oeco.2021.2502.11
Subject(s) - biological dispersal , taxon , diversity (politics) , beta diversity , ecology , habitat , alpha diversity , biology , fish <actinopterygii> , geography , fishery , population , sociology , demography , anthropology
Species diversity is defined as the variety of species and their relative abundances, and can be decomposed in local (alpha), regional (gamma) and between-communities (beta) diversity. For decades, studies with Brazilian stream fish focused on the relationship between local environmental variables and diversity patterns. However, dispersal gained notoriety for being important to the organization of communities. Besides, large scale variables are increasingly being perceived as good predictors of diversity, complementing the role of habitat variables. We present here a brief review of the methods to obtain alpha and beta taxonomic diversity, considerations regarding their predictors, and their main analysis.