Taxonomic and functional diversity of epigeal spiders (Araneae) in native forest of the Yungas (Salta, Argentina)

Taxonomic and functional diversity of epigeal spiders (Araneae) in native forest of the Yungas (Salta, Argentina)

The study of the arachnofauna in the argentinean Yungas is scarce. However, it is relevant due to the high environmental and biological diversity, mainly in the forest systems threatened by the advance of the agricultural frontier. The aim of this work is to compare the diversity and composition of epigeal spider assemblages in the Piedmont Forest (SP), Mountain Jungle (SM) and Mountain Forest (BM) of the Yungas in the province of Salta. Three sites of the SP and BM, and five of the SM were considered. Sampling was carried out during autumn, spring (2006) and summer (2007) with pitfall traps. A total of 643 spiders of 75 species/morphospecies were collected. The SP sites showed the highest species richness and species composition very dissimilar compared to the SM and BM. The space web weavers, other hunters and ground hunters accounted for more than 95 % of the abundance in each community considered. They showed similar patterns of abundance in SM and BM, while in SP the space web weavers markedly reduced their abundance. The change in the landscape configuration due to the land use is the main forces that would be structuring the local assemblages of the SP. This study is the first to analyze the epigeal spiders diversity and their guilds in the Yungas of the argentine north, being a starting point for future monitoring of biodiversity in the region.

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Main Authors: Torres, Victor Manuel, González-Reyes, Andrea Ximena, Corronca, José Antonio
Format: Digital revista
Language:spa
Published: Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales 2017
Online Access:https://revistas.unal.edu.co/index.php/cal/article/view/63071
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spelling oai:www.revistas.unal.edu.co:article-630712018-07-26T15:47:07Z Taxonomic and functional diversity of epigeal spiders (Araneae) in native forest of the Yungas (Salta, Argentina) Diversidad taxonómica y funcional de arañas (Araneae) epigeas en bosques nativos de las Yungas (Salta, Argentina) Torres, Victor Manuel González-Reyes, Andrea Ximena Corronca, José Antonio Araneofauna eco-region species assemblages guilds land use Araneofauna ecoregión ensambles de especies gremios uso del suelo The study of the arachnofauna in the argentinean Yungas is scarce. However, it is relevant due to the high environmental and biological diversity, mainly in the forest systems threatened by the advance of the agricultural frontier. The aim of this work is to compare the diversity and composition of epigeal spider assemblages in the Piedmont Forest (SP), Mountain Jungle (SM) and Mountain Forest (BM) of the Yungas in the province of Salta. Three sites of the SP and BM, and five of the SM were considered. Sampling was carried out during autumn, spring (2006) and summer (2007) with pitfall traps. A total of 643 spiders of 75 species/morphospecies were collected. The SP sites showed the highest species richness and species composition very dissimilar compared to the SM and BM. The space web weavers, other hunters and ground hunters accounted for more than 95 % of the abundance in each community considered. They showed similar patterns of abundance in SM and BM, while in SP the space web weavers markedly reduced their abundance. The change in the landscape configuration due to the land use is the main forces that would be structuring the local assemblages of the SP. This study is the first to analyze the epigeal spiders diversity and their guilds in the Yungas of the argentine north, being a starting point for future monitoring of biodiversity in the region. El estudio de la araneofauna en las Yungas argentinas es escaso. Sin embargo, es relevante debido a la alta diversidad ambiental y biológica que posee esta ecorregión, principalmente en los sistemas forestales amenazados por el avance de la frontera agropecuaria. El objetivo de este trabajo es comparar la diversidad y la composición de los ensambles de arañas epigeas en la Selva Pedemontana (SP), Selva Montana (SM) y Bosque Montano (BM) de las Yungas de la provincia de Salta. Se tomaron muestras mediante trampas de caída durante el otoño, la primavera 2006 y el verano 2007 en tres sitios de la SP, cinco en la SM, y tres en el BM. Se recolectaron 643 arañas pertenecientes a 75 especies/morfoespecies. Los ensambles de SP reportaron la mayor riqueza de especies sumado a una composición de especies muy disímil en relación con las de SM y BM. Las tejedoras espaciales, otras cazadoras y cazadoras de suelo representaron más del 95 % de la abundancia en cada comunidad. Ellas mostraron patrones semejantes de abundancia en la SM y BM, mientras que en la SP las tejedoras espaciales redujeron marcadamente su abundancia. El cambio en la configuración del paisaje debido al uso del suelo es la principal fuerza que estaría estructurando los ensambles locales de la SP. Este estudio constituye el primero en analizar la diversidad de arañas epigeas y sus gremios en las Yungas del norte argentino siendo un punto de partida para futuros monitoreos de biodiversidad en la región. Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales 2017-07-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Estudio de Campo application/pdf application/xml https://revistas.unal.edu.co/index.php/cal/article/view/63071 10.15446/caldasia.v39n2.63071 Caldasia; Vol. 39 No. 2 (2017); 326-344 Caldasia; Vol. 39 Núm. 2 (2017); 326-344 2357-3759 0366-5232 spa https://revistas.unal.edu.co/index.php/cal/article/view/63071/62513 https://revistas.unal.edu.co/index.php/cal/article/view/63071/66519 Derechos de autor 2017 Caldasia https://creativecommons.org/licenses/by/4.0
institution UNAL
collection OJS
country Colombia
countrycode CO
component Revista
access En linea
databasecode rev-cal
tag revista
region America del Sur
libraryname Sistema Nacional de Bibliotecas de la UNAL
language spa
format Digital
author Torres, Victor Manuel
González-Reyes, Andrea Ximena
Corronca, José Antonio
spellingShingle Torres, Victor Manuel
González-Reyes, Andrea Ximena
Corronca, José Antonio
Taxonomic and functional diversity of epigeal spiders (Araneae) in native forest of the Yungas (Salta, Argentina)
author_facet Torres, Victor Manuel
González-Reyes, Andrea Ximena
Corronca, José Antonio
author_sort Torres, Victor Manuel
title Taxonomic and functional diversity of epigeal spiders (Araneae) in native forest of the Yungas (Salta, Argentina)
title_short Taxonomic and functional diversity of epigeal spiders (Araneae) in native forest of the Yungas (Salta, Argentina)
title_full Taxonomic and functional diversity of epigeal spiders (Araneae) in native forest of the Yungas (Salta, Argentina)
title_fullStr Taxonomic and functional diversity of epigeal spiders (Araneae) in native forest of the Yungas (Salta, Argentina)
title_full_unstemmed Taxonomic and functional diversity of epigeal spiders (Araneae) in native forest of the Yungas (Salta, Argentina)
title_sort taxonomic and functional diversity of epigeal spiders (araneae) in native forest of the yungas (salta, argentina)
description The study of the arachnofauna in the argentinean Yungas is scarce. However, it is relevant due to the high environmental and biological diversity, mainly in the forest systems threatened by the advance of the agricultural frontier. The aim of this work is to compare the diversity and composition of epigeal spider assemblages in the Piedmont Forest (SP), Mountain Jungle (SM) and Mountain Forest (BM) of the Yungas in the province of Salta. Three sites of the SP and BM, and five of the SM were considered. Sampling was carried out during autumn, spring (2006) and summer (2007) with pitfall traps. A total of 643 spiders of 75 species/morphospecies were collected. The SP sites showed the highest species richness and species composition very dissimilar compared to the SM and BM. The space web weavers, other hunters and ground hunters accounted for more than 95 % of the abundance in each community considered. They showed similar patterns of abundance in SM and BM, while in SP the space web weavers markedly reduced their abundance. The change in the landscape configuration due to the land use is the main forces that would be structuring the local assemblages of the SP. This study is the first to analyze the epigeal spiders diversity and their guilds in the Yungas of the argentine north, being a starting point for future monitoring of biodiversity in the region.
publisher Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales
publishDate 2017
url https://revistas.unal.edu.co/index.php/cal/article/view/63071
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