Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina

Autores
Brand, Cecilia; Miserendino, Maria Laura
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Trichoptera is a widely distributed and diversified group in Andean Patagonia (Subandean Patagonic Province). This group exhibits a wide array of functional adaptations to exploit the available food resources. It is well known that changes in the relative abundance of functional-feeding groups (FFG) occur when the distribution of energetic resources (organic matter) is altered. In order to determine the functional structure variation among rivers subjected to different land uses, we selected 3 disturbance types (exotic plantation, pasture and logging) and native forest as reference. Three sites were assessed for each land use type (n=12) seasonally (every 3 months) and 6 samples with a Surber net (0.09 m-2 and 250 pore size) were taken. Larvae obtained were identified to the lowest possible taxonomic level, counted and assigned to a FFG using available references, knowledge of feeding modes and analysis of gut contents. A total of 32 taxa were identified belonging to 11 families. Mean annual densities of Trichoptera varied between 131 and 4231 ind.m-2. Pasture sites showed significantly higher density than pine and native forest sites. Overall Trichoptera FFG species composition was: shredder (10), predator (9), scraper (6), collector-filterer (5), algal-piercer (1), and collector-gatherer (1). The scraper Mastigoptila sp. was abundant in native forest rivers. Predators presented high density in logged forest sites. Shredders (53–98%) dominated rivers having dense forest cover; Parasericostoma ovale (Schmid) and Myotrichia murina Schmid (Sericostomatidae) being the most abundantspecies. Collector-filterers, mostly Smicridea annulicornis (Blanchard) and S. frequens (Navás)(Hydropsychidae), were the dominant group in pastures (42-96%), probably due to an increase of transported seston. According to these results, Trichoptera communities can be used as an early warning tool to assess changes in disturbed headwater systems in Patagonia.
Fil: Brand, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Departamento de Biología. Laboratorio de Investigaciones en Ecología y Sistemática Animal; Argentina
Fil: Miserendino, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Departamento de Biología. Laboratorio de Investigaciones en Ecología y Sistemática Animal; Argentina
Materia
Pastures
Exotic Forest
Logging Activities
Functional-Feeding Group
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:11336/83221
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/83221
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, ArgentinaBrand, CeciliaMiserendino, Maria LauraPasturesExotic ForestLogging ActivitiesFunctional-Feeding Grouphttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Trichoptera is a widely distributed and diversified group in Andean Patagonia (Subandean Patagonic Province). This group exhibits a wide array of functional adaptations to exploit the available food resources. It is well known that changes in the relative abundance of functional-feeding groups (FFG) occur when the distribution of energetic resources (organic matter) is altered. In order to determine the functional structure variation among rivers subjected to different land uses, we selected 3 disturbance types (exotic plantation, pasture and logging) and native forest as reference. Three sites were assessed for each land use type (n=12) seasonally (every 3 months) and 6 samples with a Surber net (0.09 m-2 and 250 pore size) were taken. Larvae obtained were identified to the lowest possible taxonomic level, counted and assigned to a FFG using available references, knowledge of feeding modes and analysis of gut contents. A total of 32 taxa were identified belonging to 11 families. Mean annual densities of Trichoptera varied between 131 and 4231 ind.m-2. Pasture sites showed significantly higher density than pine and native forest sites. Overall Trichoptera FFG species composition was: shredder (10), predator (9), scraper (6), collector-filterer (5), algal-piercer (1), and collector-gatherer (1). The scraper Mastigoptila sp. was abundant in native forest rivers. Predators presented high density in logged forest sites. Shredders (53–98%) dominated rivers having dense forest cover; Parasericostoma ovale (Schmid) and Myotrichia murina Schmid (Sericostomatidae) being the most abundantspecies. Collector-filterers, mostly Smicridea annulicornis (Blanchard) and S. frequens (Navás)(Hydropsychidae), were the dominant group in pastures (42-96%), probably due to an increase of transported seston. According to these results, Trichoptera communities can be used as an early warning tool to assess changes in disturbed headwater systems in Patagonia.Fil: Brand, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Departamento de Biología. Laboratorio de Investigaciones en Ecología y Sistemática Animal; ArgentinaFil: Miserendino, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Departamento de Biología. Laboratorio de Investigaciones en Ecología y Sistemática Animal; ArgentinaMagnolia Press2011-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/83221Brand, Cecilia; Miserendino, Maria Laura; Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina; Magnolia Press; Zoosymposia; 5; 6-2011; 29-401178-99131178-9913CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mapress.com/j/zs/article/view/zoosymposia.5.1.3info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:19:17Zoai:ri.conicet.gov.ar:11336/83221instacron: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:34982025-09-29 10:19:17.498CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina
title Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina
spellingShingle Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina
Brand, Cecilia
Pastures
Exotic Forest
Logging Activities
Functional-Feeding Group
title_short Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina
title_full Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina
title_fullStr Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina
title_full_unstemmed Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina
title_sort Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina
dc.creator.none.fl_str_mv Brand, Cecilia
Miserendino, Maria Laura
author Brand, Cecilia
author_facet Brand, Cecilia
Miserendino, Maria Laura
author_role author
author2 Miserendino, Maria Laura
author2_role author
dc.subject.none.fl_str_mv Pastures
Exotic Forest
Logging Activities
Functional-Feeding Group
topic Pastures
Exotic Forest
Logging Activities
Functional-Feeding Group
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Trichoptera is a widely distributed and diversified group in Andean Patagonia (Subandean Patagonic Province). This group exhibits a wide array of functional adaptations to exploit the available food resources. It is well known that changes in the relative abundance of functional-feeding groups (FFG) occur when the distribution of energetic resources (organic matter) is altered. In order to determine the functional structure variation among rivers subjected to different land uses, we selected 3 disturbance types (exotic plantation, pasture and logging) and native forest as reference. Three sites were assessed for each land use type (n=12) seasonally (every 3 months) and 6 samples with a Surber net (0.09 m-2 and 250 pore size) were taken. Larvae obtained were identified to the lowest possible taxonomic level, counted and assigned to a FFG using available references, knowledge of feeding modes and analysis of gut contents. A total of 32 taxa were identified belonging to 11 families. Mean annual densities of Trichoptera varied between 131 and 4231 ind.m-2. Pasture sites showed significantly higher density than pine and native forest sites. Overall Trichoptera FFG species composition was: shredder (10), predator (9), scraper (6), collector-filterer (5), algal-piercer (1), and collector-gatherer (1). The scraper Mastigoptila sp. was abundant in native forest rivers. Predators presented high density in logged forest sites. Shredders (53–98%) dominated rivers having dense forest cover; Parasericostoma ovale (Schmid) and Myotrichia murina Schmid (Sericostomatidae) being the most abundantspecies. Collector-filterers, mostly Smicridea annulicornis (Blanchard) and S. frequens (Navás)(Hydropsychidae), were the dominant group in pastures (42-96%), probably due to an increase of transported seston. According to these results, Trichoptera communities can be used as an early warning tool to assess changes in disturbed headwater systems in Patagonia.
Fil: Brand, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Departamento de Biología. Laboratorio de Investigaciones en Ecología y Sistemática Animal; Argentina
Fil: Miserendino, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Departamento de Biología. Laboratorio de Investigaciones en Ecología y Sistemática Animal; Argentina
description Trichoptera is a widely distributed and diversified group in Andean Patagonia (Subandean Patagonic Province). This group exhibits a wide array of functional adaptations to exploit the available food resources. It is well known that changes in the relative abundance of functional-feeding groups (FFG) occur when the distribution of energetic resources (organic matter) is altered. In order to determine the functional structure variation among rivers subjected to different land uses, we selected 3 disturbance types (exotic plantation, pasture and logging) and native forest as reference. Three sites were assessed for each land use type (n=12) seasonally (every 3 months) and 6 samples with a Surber net (0.09 m-2 and 250 pore size) were taken. Larvae obtained were identified to the lowest possible taxonomic level, counted and assigned to a FFG using available references, knowledge of feeding modes and analysis of gut contents. A total of 32 taxa were identified belonging to 11 families. Mean annual densities of Trichoptera varied between 131 and 4231 ind.m-2. Pasture sites showed significantly higher density than pine and native forest sites. Overall Trichoptera FFG species composition was: shredder (10), predator (9), scraper (6), collector-filterer (5), algal-piercer (1), and collector-gatherer (1). The scraper Mastigoptila sp. was abundant in native forest rivers. Predators presented high density in logged forest sites. Shredders (53–98%) dominated rivers having dense forest cover; Parasericostoma ovale (Schmid) and Myotrichia murina Schmid (Sericostomatidae) being the most abundantspecies. Collector-filterers, mostly Smicridea annulicornis (Blanchard) and S. frequens (Navás)(Hydropsychidae), were the dominant group in pastures (42-96%), probably due to an increase of transported seston. According to these results, Trichoptera communities can be used as an early warning tool to assess changes in disturbed headwater systems in Patagonia.
publishDate 2011
dc.date.none.fl_str_mv 2011-06
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/11336/83221
Brand, Cecilia; Miserendino, Maria Laura; Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina; Magnolia Press; Zoosymposia; 5; 6-2011; 29-40
1178-9913
1178-9913
CONICET Digital
CONICET
url http://hdl.handle.net/11336/83221
identifier_str_mv Brand, Cecilia; Miserendino, Maria Laura; Characterizing Trichoptera trophic structure in rivers under contrasting land use in Patagonia, Argentina; Magnolia Press; Zoosymposia; 5; 6-2011; 29-40
1178-9913
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.mapress.com/j/zs/article/view/zoosymposia.5.1.3
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 Magnolia Press
publisher.none.fl_str_mv Magnolia Press
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 13.070432

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