Benthic macroinvertebrate communities in sites with native forest presence and absence in North Patagonia; Comunidades de macroinvertebrados bentônicos em locais com presença e ausência de floresta nativa no Norte da Patagônia. A fauna
Date
Authors
DE LOS RIOS ESCALANTE, PATRICIO RENE
ENCINA MONTOYA, FRANCISCO RAMON
De Los Ríos Escalante, Patricio R.
Esse, Carlos
Santander-Massa, Rodrigo
Saavedra, Pablo
Encina-Montoya, Francisco
ENCINA MONTOYA, FRANCISCO RAMON
De Los Ríos Escalante, Patricio R.
Esse, Carlos
Santander-Massa, Rodrigo
Saavedra, Pablo
Encina-Montoya, Francisco
Authors
Date
Datos de publicación:
10.1590/1678-4766e2020014
Keywords
Aquatic Insects - Benthic Macroinvertebrates - Communities - Nothofagus - Null Models
Collections
Abstract
The benthic fauna in northern Patagonian streams is characterized by presence of water quality indicator species. The aim of the present study was characterized the benthic communities in streams associated to sites with presence of Nothofagus forests and with human intervention without Nothofagus forests using null models in ecology, unified neutral theory of biodiversity (UNTB) and unweighted pair group method with arithmetic mean (UPGMA). The results of species co-occurrence null model revealed that species associations are random, whereas the results of niche overlap null models revealed the presence of niche overlap. The UNTB results revealed low species number. The results of UPGMA revealed that species composition is specific for each site existing marked differences. The exposed results agree with results observed for central and northern Patagonian Chilean rivers, where the species composition is variable in according to surrounding basin properties and seasonal conditions. © 2020 Elsevier B.V., All rights reserved.
Description
Keywords
Aquatic Insects , Benthic Macroinvertebrates , Communities , Nothofagus , Null Models
Citation
10.1590/1678-4766e2020014