¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?

Autores
De la Barra, Evans; Zubieta, José; Aguilera, Gaston; Maldonado. Mabel; Pouilly, Marc; Overdoff, Thierry
Año de publicación
2016
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Altitudinal gradients represent an appropriate system to assess whether there is a relationship between richness patterns, environmental variables, and the ecological processes that determine the species type and number inhabiting a given area. In mountain streams freshwater fishes, the most prevalent relationship is a monotonic decrease in species richness with elevation. The objective of this study was to evaluate four hypotheses that can explain the negative relationship between local fish species richness and altitude, 1) the hypothesis of decreasing energy availability, 2) the hypothesis of increasing climate severity, 3) the hypothesis of habitat diversity, and 4) the hypothesis of isolation by physical severity of the environment. Fish and macro-invertebrates were collected following standard methods from 83 sites (between 200-4 000 meters) of two river basins in the Bolivian Amazon. The first hypothesis was tested by analyzing relationships between the density of macro-invertebrates, the richness of invertivorous fish species and altitude; while the second and third hypotheses were assessed by a multiple regression analysis (GLM) between fish species richness and several local and regional factors. Besides, assemblage dissimilarity between sites along the altitudinal gradient was analyzed using βsim and βness indices. Fish richness decreases linearly with increasing altitude. The density of macro-invertebrates tends to increase at higher altitudes, contrary to invertivorous fish species richness, suggesting that energy availability is not a limiting factor for fish species colonization. The GLM explained 86% of the variation in fish species richness, with a significant contribution of water temperature, maximum slope in the river mainstem, and stream width. There is a higher species turnover (βsim) between sites at low elevation. Inversely, βness shows higher values in the upper parts, corresponding to change in assemblages mainly due to species loss. Taken together, these results suggest that climatic and physical severities create strong barriers to colonization, further explaining the decrease in fish richness along the altitudinal gradient.
Fil: De la Barra, Evans. Universidad Mayor de San Simon; Bolivia. Museum National d'Histoire Naturelle; Francia. Universidad Nacional de Tucumán; Argentina
Fil: Zubieta, José. Universidad Mayor de San Simon; Bolivia. Museum National d'Histoire Naturelle; Francia
Fil: Aguilera, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Maldonado. Mabel. Universidad Mayor de San Simon; Bolivia
Fil: Pouilly, Marc. Museum National D'histoire Naturelle. Institut de Recherche Pour Le Developpment; Francia
Fil: Overdoff, Thierry. Museum National D'histoire Naturelle. Institut de Recherche Pour Le Developpment; Francia
Materia
SPECIES RICHNESS
BOLIVIAN AMAZON
MOUNTAIN STREAMS
MAXIMUN SLOPES
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:11336/57393
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?Which factors determine the altitudinal distribution of tropical Andean riverine fishes?De la Barra, EvansZubieta, JoséAguilera, GastonMaldonado. MabelPouilly, MarcOverdoff, ThierrySPECIES RICHNESSBOLIVIAN AMAZONMOUNTAIN STREAMSMAXIMUN SLOPEShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Altitudinal gradients represent an appropriate system to assess whether there is a relationship between richness patterns, environmental variables, and the ecological processes that determine the species type and number inhabiting a given area. In mountain streams freshwater fishes, the most prevalent relationship is a monotonic decrease in species richness with elevation. The objective of this study was to evaluate four hypotheses that can explain the negative relationship between local fish species richness and altitude, 1) the hypothesis of decreasing energy availability, 2) the hypothesis of increasing climate severity, 3) the hypothesis of habitat diversity, and 4) the hypothesis of isolation by physical severity of the environment. Fish and macro-invertebrates were collected following standard methods from 83 sites (between 200-4 000 meters) of two river basins in the Bolivian Amazon. The first hypothesis was tested by analyzing relationships between the density of macro-invertebrates, the richness of invertivorous fish species and altitude; while the second and third hypotheses were assessed by a multiple regression analysis (GLM) between fish species richness and several local and regional factors. Besides, assemblage dissimilarity between sites along the altitudinal gradient was analyzed using βsim and βness indices. Fish richness decreases linearly with increasing altitude. The density of macro-invertebrates tends to increase at higher altitudes, contrary to invertivorous fish species richness, suggesting that energy availability is not a limiting factor for fish species colonization. The GLM explained 86% of the variation in fish species richness, with a significant contribution of water temperature, maximum slope in the river mainstem, and stream width. There is a higher species turnover (βsim) between sites at low elevation. Inversely, βness shows higher values in the upper parts, corresponding to change in assemblages mainly due to species loss. Taken together, these results suggest that climatic and physical severities create strong barriers to colonization, further explaining the decrease in fish richness along the altitudinal gradient.Fil: De la Barra, Evans. Universidad Mayor de San Simon; Bolivia. Museum National d'Histoire Naturelle; Francia. Universidad Nacional de Tucumán; ArgentinaFil: Zubieta, José. Universidad Mayor de San Simon; Bolivia. Museum National d'Histoire Naturelle; FranciaFil: Aguilera, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; ArgentinaFil: Maldonado. Mabel. Universidad Mayor de San Simon; BoliviaFil: Pouilly, Marc. Museum National D'histoire Naturelle. Institut de Recherche Pour Le Developpment; FranciaFil: Overdoff, Thierry. Museum National D'histoire Naturelle. Institut de Recherche Pour Le Developpment; FranciaRevista de Biología Tropical2016-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57393De la Barra, Evans; Zubieta, José; Aguilera, Gaston; Maldonado. Mabel; Pouilly, Marc; et al.; ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?; Revista de Biología Tropical; Revista de Biología Tropical; 64; 1; 3-2016; 157-1760034-7744CONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/url/https://revistas.ucr.ac.cr/index.php/rbt/article/view/18576info:eu-repo/semantics/altIdentifier/url/http://www.redalyc.org/articulo.oa?id=44943437015info:eu-repo/semantics/altIdentifier/doi/10.15517/rbt.v64i1.18576info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:19:23Zoai:ri.conicet.gov.ar:11336/57393instacron: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:34982025-10-15 15:19:23.296CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?
Which factors determine the altitudinal distribution of tropical Andean riverine fishes?
title ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?
spellingShingle ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?
De la Barra, Evans
SPECIES RICHNESS
BOLIVIAN AMAZON
MOUNTAIN STREAMS
MAXIMUN SLOPES
title_short ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?
title_full ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?
title_fullStr ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?
title_full_unstemmed ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?
title_sort ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?
dc.creator.none.fl_str_mv De la Barra, Evans
Zubieta, José
Aguilera, Gaston
Maldonado. Mabel
Pouilly, Marc
Overdoff, Thierry
author De la Barra, Evans
author_facet De la Barra, Evans
Zubieta, José
Aguilera, Gaston
Maldonado. Mabel
Pouilly, Marc
Overdoff, Thierry
author_role author
author2 Zubieta, José
Aguilera, Gaston
Maldonado. Mabel
Pouilly, Marc
Overdoff, Thierry
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv SPECIES RICHNESS
BOLIVIAN AMAZON
MOUNTAIN STREAMS
MAXIMUN SLOPES
topic SPECIES RICHNESS
BOLIVIAN AMAZON
MOUNTAIN STREAMS
MAXIMUN SLOPES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Altitudinal gradients represent an appropriate system to assess whether there is a relationship between richness patterns, environmental variables, and the ecological processes that determine the species type and number inhabiting a given area. In mountain streams freshwater fishes, the most prevalent relationship is a monotonic decrease in species richness with elevation. The objective of this study was to evaluate four hypotheses that can explain the negative relationship between local fish species richness and altitude, 1) the hypothesis of decreasing energy availability, 2) the hypothesis of increasing climate severity, 3) the hypothesis of habitat diversity, and 4) the hypothesis of isolation by physical severity of the environment. Fish and macro-invertebrates were collected following standard methods from 83 sites (between 200-4 000 meters) of two river basins in the Bolivian Amazon. The first hypothesis was tested by analyzing relationships between the density of macro-invertebrates, the richness of invertivorous fish species and altitude; while the second and third hypotheses were assessed by a multiple regression analysis (GLM) between fish species richness and several local and regional factors. Besides, assemblage dissimilarity between sites along the altitudinal gradient was analyzed using βsim and βness indices. Fish richness decreases linearly with increasing altitude. The density of macro-invertebrates tends to increase at higher altitudes, contrary to invertivorous fish species richness, suggesting that energy availability is not a limiting factor for fish species colonization. The GLM explained 86% of the variation in fish species richness, with a significant contribution of water temperature, maximum slope in the river mainstem, and stream width. There is a higher species turnover (βsim) between sites at low elevation. Inversely, βness shows higher values in the upper parts, corresponding to change in assemblages mainly due to species loss. Taken together, these results suggest that climatic and physical severities create strong barriers to colonization, further explaining the decrease in fish richness along the altitudinal gradient.
Fil: De la Barra, Evans. Universidad Mayor de San Simon; Bolivia. Museum National d'Histoire Naturelle; Francia. Universidad Nacional de Tucumán; Argentina
Fil: Zubieta, José. Universidad Mayor de San Simon; Bolivia. Museum National d'Histoire Naturelle; Francia
Fil: Aguilera, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Maldonado. Mabel. Universidad Mayor de San Simon; Bolivia
Fil: Pouilly, Marc. Museum National D'histoire Naturelle. Institut de Recherche Pour Le Developpment; Francia
Fil: Overdoff, Thierry. Museum National D'histoire Naturelle. Institut de Recherche Pour Le Developpment; Francia
description Altitudinal gradients represent an appropriate system to assess whether there is a relationship between richness patterns, environmental variables, and the ecological processes that determine the species type and number inhabiting a given area. In mountain streams freshwater fishes, the most prevalent relationship is a monotonic decrease in species richness with elevation. The objective of this study was to evaluate four hypotheses that can explain the negative relationship between local fish species richness and altitude, 1) the hypothesis of decreasing energy availability, 2) the hypothesis of increasing climate severity, 3) the hypothesis of habitat diversity, and 4) the hypothesis of isolation by physical severity of the environment. Fish and macro-invertebrates were collected following standard methods from 83 sites (between 200-4 000 meters) of two river basins in the Bolivian Amazon. The first hypothesis was tested by analyzing relationships between the density of macro-invertebrates, the richness of invertivorous fish species and altitude; while the second and third hypotheses were assessed by a multiple regression analysis (GLM) between fish species richness and several local and regional factors. Besides, assemblage dissimilarity between sites along the altitudinal gradient was analyzed using βsim and βness indices. Fish richness decreases linearly with increasing altitude. The density of macro-invertebrates tends to increase at higher altitudes, contrary to invertivorous fish species richness, suggesting that energy availability is not a limiting factor for fish species colonization. The GLM explained 86% of the variation in fish species richness, with a significant contribution of water temperature, maximum slope in the river mainstem, and stream width. There is a higher species turnover (βsim) between sites at low elevation. Inversely, βness shows higher values in the upper parts, corresponding to change in assemblages mainly due to species loss. Taken together, these results suggest that climatic and physical severities create strong barriers to colonization, further explaining the decrease in fish richness along the altitudinal gradient.
publishDate 2016
dc.date.none.fl_str_mv 2016-03
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/11336/57393
De la Barra, Evans; Zubieta, José; Aguilera, Gaston; Maldonado. Mabel; Pouilly, Marc; et al.; ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?; Revista de Biología Tropical; Revista de Biología Tropical; 64; 1; 3-2016; 157-176
0034-7744
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57393
identifier_str_mv De la Barra, Evans; Zubieta, José; Aguilera, Gaston; Maldonado. Mabel; Pouilly, Marc; et al.; ¿Qué factores determinan la distribución altitudinal de los peces de ríos tropicales andinos?; Revista de Biología Tropical; Revista de Biología Tropical; 64; 1; 3-2016; 157-176
0034-7744
CONICET Digital
CONICET
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://revistas.ucr.ac.cr/index.php/rbt/article/view/18576
info:eu-repo/semantics/altIdentifier/url/http://www.redalyc.org/articulo.oa?id=44943437015
info:eu-repo/semantics/altIdentifier/doi/10.15517/rbt.v64i1.18576
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 Revista de Biología Tropical
publisher.none.fl_str_mv Revista de Biología Tropical
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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