Effects of volcanic ash on assemblage patterns and biological traits of Chironomidae in a north Andean Patagonian stream, Argentina

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The Puyehue-Cordón Caulle Volcanic Complex eruption occurred on June 4, 2011 (2236 m a.s.l. 40°32'S, 72°7'W). As a consequence, wide areas of Argentina were covered by volcanic ash. In order to investigate the effects of ashfall on chironomid assemblages, we conducted a study at Ñireco Riv...

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Detalles Bibliográficos
Autores principales: Mauad, Melina, Siri, Augusto, Montes de Oca, Fernanda, Donato, Mariano Humberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Naturales
Chironomidae larvae
Disturbance
Morphological features
South America
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/103464
https://www.limnology-journal.org/articles/limn/abs/2017/01/limn160041/limn160041.html
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-103464
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Chironomidae larvae
Disturbance
Morphological features
South America
spellingShingle Ciencias Naturales
Chironomidae larvae
Disturbance
Morphological features
South America
Mauad, Melina
Siri, Augusto
Montes de Oca, Fernanda
Donato, Mariano Humberto
Effects of volcanic ash on assemblage patterns and biological traits of Chironomidae in a north Andean Patagonian stream, Argentina
topic_facet Ciencias Naturales
Chironomidae larvae
Disturbance
Morphological features
South America
description The Puyehue-Cordón Caulle Volcanic Complex eruption occurred on June 4, 2011 (2236 m a.s.l. 40°32'S, 72°7'W). As a consequence, wide areas of Argentina were covered by volcanic ash. In order to investigate the effects of ashfall on chironomid assemblages, we conducted a study at Ñireco River in the southwestern part of the Natural Reserve of Nahuel Huapi National Park that crosses the city of San Carlos de Bariloche, Río Negro, Argentina. We assessed changes in chironomid assemblage attributes and 18 biological traits, by comparing pre-eruption data (December 2009 and December 2010) with post-eruption data (November 2011). Volcanic ash caused negative effects on the chironomid assemblages, where richness and density decreased significantly and the subfamilies Podonominae, Tanypodinae and Chironominae disappeared. The ordination method (principal component analysis) based on abundance of taxa and functional trait composition distinguished pre-eruption from post-eruption periods. Specific tolerance to sedimentation was related to traits mostly associated with predaceous habits such as small size, large head, retractile antennae, long prolegs, presence of ligula and long apical mandibular tooth.
format Articulo
Articulo
author Mauad, Melina
Siri, Augusto
Montes de Oca, Fernanda
Donato, Mariano Humberto
author_facet Mauad, Melina
Siri, Augusto
Montes de Oca, Fernanda
Donato, Mariano Humberto
author_sort Mauad, Melina
title Effects of volcanic ash on assemblage patterns and biological traits of Chironomidae in a north Andean Patagonian stream, Argentina
title_short Effects of volcanic ash on assemblage patterns and biological traits of Chironomidae in a north Andean Patagonian stream, Argentina
title_full Effects of volcanic ash on assemblage patterns and biological traits of Chironomidae in a north Andean Patagonian stream, Argentina
title_fullStr Effects of volcanic ash on assemblage patterns and biological traits of Chironomidae in a north Andean Patagonian stream, Argentina
title_full_unstemmed Effects of volcanic ash on assemblage patterns and biological traits of Chironomidae in a north Andean Patagonian stream, Argentina
title_sort effects of volcanic ash on assemblage patterns and biological traits of chironomidae in a north andean patagonian stream, argentina
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/103464
https://www.limnology-journal.org/articles/limn/abs/2017/01/limn160041/limn160041.html
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