Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact

Autores
Tagliaferro, Marina Beatriz; Anderson, Christopher Brian; Boy, Claudia Clementina
Año de publicación
2021
Idioma
español castellano
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The River Continuum Concept (RCC) has been widely used to understand the relationship between abiotic conditions, basal resources and aquatic communities, including longitudinal patterns of benthic macroinvertebrate functional feeding groups (FFG). However, the RCC has been quested for southern hemisphere temperate streams, and we asked whether it applies to sub-Antarctic streams in southern Patagonia. We studied FFG assemblages in Fuegian stream gradients with urbanization and reference conditions (?type?). We assessed physicochemical characteristics and basal resources in 6 streams (54°50' S, 68° W). We measured FFG abundance with 4-5 benthic samples using a Surber net (450 um mesh) in each watershed?s upper, mid and lower reaches (N = 85). We conducted ANOVAs and perMANOVAs to evaluate differences due to stream type and reach on the proportion of each FFG and overall FFG assemblage, respectively. Urban streams had lower canopy cover, dissolved oxygen, and substrate size and higher temperature and nutrient concentration, compared to Reference streams. The overall assemblage differed among stream reaches and type. While RCC hypothesized higher proportion of shredders in headwaters, scraper in mid-, and collector-filterers in lower-waters, In Reference reaches, shredders were more abundant in midstream, and no differences were found for the other FFGs between reaches In Urban streams, collectors-gatherers were more abundant downstream; scrapers increased towards midstream, decreasing downstream, and collector-filterers had the greatest abundance upstream. Moreover, shredders were more abundant in Urban streams, and collector-filterers in Ref streams. FFG distribution in Fuegian streams differed from the expectations of the RCC, which relies on gradients in basal resources. This might be due to extreme upstream conditions (e.g., low temperature and nutrient concentrations). Moreover, although collector-gatherers had similar proportion comparing downstream areas between RCC and Urban streams, it might be consequence of the availability of resources (RCC) and their tolerance to urban conditions (unexpected in RCC).
Fil: Tagliaferro, Marina Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Anderson, Christopher Brian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Boy, Claudia Clementina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
V Congreso Latinoamericano de Macroinvertebrados y Ecosistemas Acuáticos
Panamá
Instituto Conmemorativo Gorgas de Estudios de la Salud
Universidad de Panamá
Comité de Biomonitoreo de la Red Analítica de Latino América y el Caribe
Materia
TIERRA DEL FUEGO
URBANIZATION
LONGITUDINAL DISTRIBUTION
MACROINVERTEBRATES
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:11336/185007
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impactTagliaferro, Marina BeatrizAnderson, Christopher BrianBoy, Claudia ClementinaTIERRA DEL FUEGOURBANIZATIONLONGITUDINAL DISTRIBUTIONMACROINVERTEBRATEShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The River Continuum Concept (RCC) has been widely used to understand the relationship between abiotic conditions, basal resources and aquatic communities, including longitudinal patterns of benthic macroinvertebrate functional feeding groups (FFG). However, the RCC has been quested for southern hemisphere temperate streams, and we asked whether it applies to sub-Antarctic streams in southern Patagonia. We studied FFG assemblages in Fuegian stream gradients with urbanization and reference conditions (?type?). We assessed physicochemical characteristics and basal resources in 6 streams (54°50' S, 68° W). We measured FFG abundance with 4-5 benthic samples using a Surber net (450 um mesh) in each watershed?s upper, mid and lower reaches (N = 85). We conducted ANOVAs and perMANOVAs to evaluate differences due to stream type and reach on the proportion of each FFG and overall FFG assemblage, respectively. Urban streams had lower canopy cover, dissolved oxygen, and substrate size and higher temperature and nutrient concentration, compared to Reference streams. The overall assemblage differed among stream reaches and type. While RCC hypothesized higher proportion of shredders in headwaters, scraper in mid-, and collector-filterers in lower-waters, In Reference reaches, shredders were more abundant in midstream, and no differences were found for the other FFGs between reaches In Urban streams, collectors-gatherers were more abundant downstream; scrapers increased towards midstream, decreasing downstream, and collector-filterers had the greatest abundance upstream. Moreover, shredders were more abundant in Urban streams, and collector-filterers in Ref streams. FFG distribution in Fuegian streams differed from the expectations of the RCC, which relies on gradients in basal resources. This might be due to extreme upstream conditions (e.g., low temperature and nutrient concentrations). Moreover, although collector-gatherers had similar proportion comparing downstream areas between RCC and Urban streams, it might be consequence of the availability of resources (RCC) and their tolerance to urban conditions (unexpected in RCC).Fil: Tagliaferro, Marina Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Anderson, Christopher Brian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Boy, Claudia Clementina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaV Congreso Latinoamericano de Macroinvertebrados y Ecosistemas AcuáticosPanamáInstituto Conmemorativo Gorgas de Estudios de la SaludUniversidad de PanamáComité de Biomonitoreo de la Red Analítica de Latino América y el CaribeInstituto Conmemorativo Gorgas de Estudios de la SaludCornejo, Aydee2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/185007Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact; V Congreso Latinoamericano de Macroinvertebrados y Ecosistemas Acuáticos; Panamá; 2021CONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/url/https://drive.google.com/file/d/1pDMtnwisG5XIYPgFap-pyVUuOwhqQPFd/viewInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:07:05Zoai:ri.conicet.gov.ar:11336/185007instacron: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:34982025-10-22 11:07:05.965CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact
title Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact
spellingShingle Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact
Tagliaferro, Marina Beatriz
TIERRA DEL FUEGO
URBANIZATION
LONGITUDINAL DISTRIBUTION
MACROINVERTEBRATES
title_short Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact
title_full Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact
title_fullStr Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact
title_full_unstemmed Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact
title_sort Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact
dc.creator.none.fl_str_mv Tagliaferro, Marina Beatriz
Anderson, Christopher Brian
Boy, Claudia Clementina
author Tagliaferro, Marina Beatriz
author_facet Tagliaferro, Marina Beatriz
Anderson, Christopher Brian
Boy, Claudia Clementina
author_role author
author2 Anderson, Christopher Brian
Boy, Claudia Clementina
author2_role author
author
dc.contributor.none.fl_str_mv Cornejo, Aydee
dc.subject.none.fl_str_mv TIERRA DEL FUEGO
URBANIZATION
LONGITUDINAL DISTRIBUTION
MACROINVERTEBRATES
topic TIERRA DEL FUEGO
URBANIZATION
LONGITUDINAL DISTRIBUTION
MACROINVERTEBRATES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The River Continuum Concept (RCC) has been widely used to understand the relationship between abiotic conditions, basal resources and aquatic communities, including longitudinal patterns of benthic macroinvertebrate functional feeding groups (FFG). However, the RCC has been quested for southern hemisphere temperate streams, and we asked whether it applies to sub-Antarctic streams in southern Patagonia. We studied FFG assemblages in Fuegian stream gradients with urbanization and reference conditions (?type?). We assessed physicochemical characteristics and basal resources in 6 streams (54°50' S, 68° W). We measured FFG abundance with 4-5 benthic samples using a Surber net (450 um mesh) in each watershed?s upper, mid and lower reaches (N = 85). We conducted ANOVAs and perMANOVAs to evaluate differences due to stream type and reach on the proportion of each FFG and overall FFG assemblage, respectively. Urban streams had lower canopy cover, dissolved oxygen, and substrate size and higher temperature and nutrient concentration, compared to Reference streams. The overall assemblage differed among stream reaches and type. While RCC hypothesized higher proportion of shredders in headwaters, scraper in mid-, and collector-filterers in lower-waters, In Reference reaches, shredders were more abundant in midstream, and no differences were found for the other FFGs between reaches In Urban streams, collectors-gatherers were more abundant downstream; scrapers increased towards midstream, decreasing downstream, and collector-filterers had the greatest abundance upstream. Moreover, shredders were more abundant in Urban streams, and collector-filterers in Ref streams. FFG distribution in Fuegian streams differed from the expectations of the RCC, which relies on gradients in basal resources. This might be due to extreme upstream conditions (e.g., low temperature and nutrient concentrations). Moreover, although collector-gatherers had similar proportion comparing downstream areas between RCC and Urban streams, it might be consequence of the availability of resources (RCC) and their tolerance to urban conditions (unexpected in RCC).
Fil: Tagliaferro, Marina Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Anderson, Christopher Brian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Boy, Claudia Clementina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
V Congreso Latinoamericano de Macroinvertebrados y Ecosistemas Acuáticos
Panamá
Instituto Conmemorativo Gorgas de Estudios de la Salud
Universidad de Panamá
Comité de Biomonitoreo de la Red Analítica de Latino América y el Caribe
description The River Continuum Concept (RCC) has been widely used to understand the relationship between abiotic conditions, basal resources and aquatic communities, including longitudinal patterns of benthic macroinvertebrate functional feeding groups (FFG). However, the RCC has been quested for southern hemisphere temperate streams, and we asked whether it applies to sub-Antarctic streams in southern Patagonia. We studied FFG assemblages in Fuegian stream gradients with urbanization and reference conditions (?type?). We assessed physicochemical characteristics and basal resources in 6 streams (54°50' S, 68° W). We measured FFG abundance with 4-5 benthic samples using a Surber net (450 um mesh) in each watershed?s upper, mid and lower reaches (N = 85). We conducted ANOVAs and perMANOVAs to evaluate differences due to stream type and reach on the proportion of each FFG and overall FFG assemblage, respectively. Urban streams had lower canopy cover, dissolved oxygen, and substrate size and higher temperature and nutrient concentration, compared to Reference streams. The overall assemblage differed among stream reaches and type. While RCC hypothesized higher proportion of shredders in headwaters, scraper in mid-, and collector-filterers in lower-waters, In Reference reaches, shredders were more abundant in midstream, and no differences were found for the other FFGs between reaches In Urban streams, collectors-gatherers were more abundant downstream; scrapers increased towards midstream, decreasing downstream, and collector-filterers had the greatest abundance upstream. Moreover, shredders were more abundant in Urban streams, and collector-filterers in Ref streams. FFG distribution in Fuegian streams differed from the expectations of the RCC, which relies on gradients in basal resources. This might be due to extreme upstream conditions (e.g., low temperature and nutrient concentrations). Moreover, although collector-gatherers had similar proportion comparing downstream areas between RCC and Urban streams, it might be consequence of the availability of resources (RCC) and their tolerance to urban conditions (unexpected in RCC).
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/185007
Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact; V Congreso Latinoamericano de Macroinvertebrados y Ecosistemas Acuáticos; Panamá; 2021
CONICET Digital
CONICET
url http://hdl.handle.net/11336/185007
identifier_str_mv Sub-Antarctic streams break the rules: functional feeding groups along watershed gradients with and without urban impact; V Congreso Latinoamericano de Macroinvertebrados y Ecosistemas Acuáticos; Panamá; 2021
CONICET Digital
CONICET
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language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://drive.google.com/file/d/1pDMtnwisG5XIYPgFap-pyVUuOwhqQPFd/view
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
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Instituto Conmemorativo Gorgas de Estudios de la Salud
publisher.none.fl_str_mv Instituto Conmemorativo Gorgas de Estudios de la Salud
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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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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