Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina

Autores
Miserendino, Maria Laura; Pizzolon, Lino Arturo
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Longitudinal and seasonal changes in physical and chemical variables, and macroinvertebrate community structure-function were examined in the Azul-Quemquemtreu river system in the subantarctic forest of Patagonia, Argentina. Patagonian mountain streams have a marked seasonal discharge pattern and may have high suspended sediment loads because of forestry and other land-use practices. The main physical differences among sites were in substrate size (boulder-pebble/sand), mean width (3-37 m), discharge (<1-80 m3 s-1), total alkalinity (275-1210 meq litre-1) and conductivity (31-137 mS cm-1). Species richness and Ephemeroptera, Plecoptera, and Trichoptera richness decreased from upstream sites to the mouth of the river system and were affected by land use.  Macroinvertebrate assemblages were influenced by physical (substrate size, width, discharge, current velocity) and chemical (alkalinity and conductivity) variables, and mean density of macroinvertebrates was significantly higher at the Quemquemtreu sites than the Azul sites. Canonical Correspondence Analysis indicated that seasonal trends in macroinvertebrate community composition were related to changes in environmental characteristics of the river, especially water temperature and discharge. The composition of benthic communities in rivers of the Patagonian Andes largely reflect characteristics related to stream size, but factors at the reach scale best explain variation in abundance data. Collector-gatherers were the dominant functional feeding group at all sites. Faunas have similarities with those of New Zealand in taxonomic-functional composition, with a predominance of Chironomidae (Diptera), Leptophlebiidae (Ephemeroptera), and Gripopterygidae (Plecoptera).
Fil: Miserendino, Maria Laura. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Cs.naturales - Sede Esquel. Laboratorio de Ecología Acuatica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pizzolon, Lino Arturo. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Cs.naturales - Sede Esquel. Laboratorio de Ecología Acuatica; Argentina
Materia
RIVERS
COMMUNITY
MACROINVERTEBRATES
ENVIRONMENTAL VARIABLES
discharge
Patagonia
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/102375
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/102375
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network_name_str CONICET Digital (CONICET)
spelling Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, ArgentinaMiserendino, Maria LauraPizzolon, Lino ArturoRIVERSCOMMUNITYMACROINVERTEBRATESENVIRONMENTAL VARIABLESdischargePatagoniahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Longitudinal and seasonal changes in physical and chemical variables, and macroinvertebrate community structure-function were examined in the Azul-Quemquemtreu river system in the subantarctic forest of Patagonia, Argentina. Patagonian mountain streams have a marked seasonal discharge pattern and may have high suspended sediment loads because of forestry and other land-use practices. The main physical differences among sites were in substrate size (boulder-pebble/sand), mean width (3-37 m), discharge (<1-80 m3 s-1), total alkalinity (275-1210 meq litre-1) and conductivity (31-137 mS cm-1). Species richness and Ephemeroptera, Plecoptera, and Trichoptera richness decreased from upstream sites to the mouth of the river system and were affected by land use.  Macroinvertebrate assemblages were influenced by physical (substrate size, width, discharge, current velocity) and chemical (alkalinity and conductivity) variables, and mean density of macroinvertebrates was significantly higher at the Quemquemtreu sites than the Azul sites. Canonical Correspondence Analysis indicated that seasonal trends in macroinvertebrate community composition were related to changes in environmental characteristics of the river, especially water temperature and discharge. The composition of benthic communities in rivers of the Patagonian Andes largely reflect characteristics related to stream size, but factors at the reach scale best explain variation in abundance data. Collector-gatherers were the dominant functional feeding group at all sites. Faunas have similarities with those of New Zealand in taxonomic-functional composition, with a predominance of Chironomidae (Diptera), Leptophlebiidae (Ephemeroptera), and Gripopterygidae (Plecoptera).Fil: Miserendino, Maria Laura. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Cs.naturales - Sede Esquel. Laboratorio de Ecología Acuatica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Pizzolon, Lino Arturo. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Cs.naturales - Sede Esquel. Laboratorio de Ecología Acuatica; ArgentinaRoyal Society of New Zealand2003-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/102375Miserendino, Maria Laura; Pizzolon, Lino Arturo; Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina; Royal Society of New Zealand; New Zealand Journal Of Marine And Freshwater Research; 37; 3; 9-2003; 525-5390028-8330CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00288330.2003.9517187info:eu-repo/semantics/altIdentifier/doi/10.1080/00288330.2003.9517187info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:02:40Zoai:ri.conicet.gov.ar:11336/102375instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:02:40.99CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina
title Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina
spellingShingle Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina
Miserendino, Maria Laura
RIVERS
COMMUNITY
MACROINVERTEBRATES
ENVIRONMENTAL VARIABLES
discharge
Patagonia
title_short Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina
title_full Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina
title_fullStr Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina
title_full_unstemmed Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina
title_sort Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina
dc.creator.none.fl_str_mv Miserendino, Maria Laura
Pizzolon, Lino Arturo
author Miserendino, Maria Laura
author_facet Miserendino, Maria Laura
Pizzolon, Lino Arturo
author_role author
author2 Pizzolon, Lino Arturo
author2_role author
dc.subject.none.fl_str_mv RIVERS
COMMUNITY
MACROINVERTEBRATES
ENVIRONMENTAL VARIABLES
discharge
Patagonia
topic RIVERS
COMMUNITY
MACROINVERTEBRATES
ENVIRONMENTAL VARIABLES
discharge
Patagonia
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Longitudinal and seasonal changes in physical and chemical variables, and macroinvertebrate community structure-function were examined in the Azul-Quemquemtreu river system in the subantarctic forest of Patagonia, Argentina. Patagonian mountain streams have a marked seasonal discharge pattern and may have high suspended sediment loads because of forestry and other land-use practices. The main physical differences among sites were in substrate size (boulder-pebble/sand), mean width (3-37 m), discharge (<1-80 m3 s-1), total alkalinity (275-1210 meq litre-1) and conductivity (31-137 mS cm-1). Species richness and Ephemeroptera, Plecoptera, and Trichoptera richness decreased from upstream sites to the mouth of the river system and were affected by land use.  Macroinvertebrate assemblages were influenced by physical (substrate size, width, discharge, current velocity) and chemical (alkalinity and conductivity) variables, and mean density of macroinvertebrates was significantly higher at the Quemquemtreu sites than the Azul sites. Canonical Correspondence Analysis indicated that seasonal trends in macroinvertebrate community composition were related to changes in environmental characteristics of the river, especially water temperature and discharge. The composition of benthic communities in rivers of the Patagonian Andes largely reflect characteristics related to stream size, but factors at the reach scale best explain variation in abundance data. Collector-gatherers were the dominant functional feeding group at all sites. Faunas have similarities with those of New Zealand in taxonomic-functional composition, with a predominance of Chironomidae (Diptera), Leptophlebiidae (Ephemeroptera), and Gripopterygidae (Plecoptera).
Fil: Miserendino, Maria Laura. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Cs.naturales - Sede Esquel. Laboratorio de Ecología Acuatica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pizzolon, Lino Arturo. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Cs.naturales - Sede Esquel. Laboratorio de Ecología Acuatica; Argentina
description Longitudinal and seasonal changes in physical and chemical variables, and macroinvertebrate community structure-function were examined in the Azul-Quemquemtreu river system in the subantarctic forest of Patagonia, Argentina. Patagonian mountain streams have a marked seasonal discharge pattern and may have high suspended sediment loads because of forestry and other land-use practices. The main physical differences among sites were in substrate size (boulder-pebble/sand), mean width (3-37 m), discharge (<1-80 m3 s-1), total alkalinity (275-1210 meq litre-1) and conductivity (31-137 mS cm-1). Species richness and Ephemeroptera, Plecoptera, and Trichoptera richness decreased from upstream sites to the mouth of the river system and were affected by land use.  Macroinvertebrate assemblages were influenced by physical (substrate size, width, discharge, current velocity) and chemical (alkalinity and conductivity) variables, and mean density of macroinvertebrates was significantly higher at the Quemquemtreu sites than the Azul sites. Canonical Correspondence Analysis indicated that seasonal trends in macroinvertebrate community composition were related to changes in environmental characteristics of the river, especially water temperature and discharge. The composition of benthic communities in rivers of the Patagonian Andes largely reflect characteristics related to stream size, but factors at the reach scale best explain variation in abundance data. Collector-gatherers were the dominant functional feeding group at all sites. Faunas have similarities with those of New Zealand in taxonomic-functional composition, with a predominance of Chironomidae (Diptera), Leptophlebiidae (Ephemeroptera), and Gripopterygidae (Plecoptera).
publishDate 2003
dc.date.none.fl_str_mv 2003-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/102375
Miserendino, Maria Laura; Pizzolon, Lino Arturo; Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina; Royal Society of New Zealand; New Zealand Journal Of Marine And Freshwater Research; 37; 3; 9-2003; 525-539
0028-8330
CONICET Digital
CONICET
url http://hdl.handle.net/11336/102375
identifier_str_mv Miserendino, Maria Laura; Pizzolon, Lino Arturo; Distribution of macroinvertebrate assemblages in the Azul‐Quemquemtreu river basin, Patagonia, Argentina; Royal Society of New Zealand; New Zealand Journal Of Marine And Freshwater Research; 37; 3; 9-2003; 525-539
0028-8330
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00288330.2003.9517187
info:eu-repo/semantics/altIdentifier/doi/10.1080/00288330.2003.9517187
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of New Zealand
publisher.none.fl_str_mv Royal Society of New Zealand
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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