Short spatial and temporal scale patterns of fish assemblages in a subtropical rainforest mountain stream

The fish fauna of a subtropical mountain stream in Argentina was surveyed for the first time. The abundance and occurrence of species were explored considering variation in hydrology, seasonality and the abiotic environment. We collected 221 individuals of 23 species from 10 families and four orders...

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Bibliographic Details
Authors: Rosso, Juan Jose, Mabragaña, Ezequiel, Avigliano, Esteban, Schenone, Nahuel Francisco, Diaz de Astarloa, Juan Martin
Format: article
Status:Published version
Publication Date:2014
Country:Argentina
Institution:Consejo Nacional de Investigaciones Científicas y Técnicas
Repository:CONICET Digital (CONICET)
Language:English
OAI Identifier:oai:ri.conicet.gov.ar:11336/16333
Online Access:http://hdl.handle.net/11336/16333
Access Level:Open access
Keyword:Argentina
Misiones
Ramos Stream
Fish
Hydrology
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
Description
Summary:The fish fauna of a subtropical mountain stream in Argentina was surveyed for the first time. The abundance and occurrence of species were explored considering variation in hydrology, seasonality and the abiotic environment. We collected 221 individuals of 23 species from 10 families and four orders. Small sized species and small individuals dominated the fish fauna. The small characid Astyanax saguazu was the most conspicuous species. Hydrology, seasonal changes in water temperature and variation in water conductivity affected the abundance and distribution of fish. Hypobrycon maromba is recorded in Argentina for the first time.