The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, Argentina

Birds play several roles in agricultural lands and respond to habitat heterogeneity within the agricultural landscape. Agricultural intensification in Argentina has increased the sown area, mainly with soybean, fragmenting landscapes in the pampas and mesopotamic region. In Entre Ríos Province, the...

Descripción completa

Detalles Bibliográficos
Autores: Goijman, Andrea P., Zaccagnini, María Elena
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:Argentina
Institución:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
Repositorio:Biblioteca Digital (UBA-FCEN)
Idioma:inglés
OAI Identifier:hornero:hornero_v023_n02_p067
Acceso en línea:https://hdl.handle.net/20.500.12110/hornero_v023_n02_p067
Access Level:acceso abierto
Palabra clave:AVES
BOSQUE
PAISAJE AGRICOLA
SOJA
TERRAZAS
AGRICULTURAL LANDSCAPE
BIRDS
FOREST
SOYBEAN
TERRACES
id AR_395acf4e37bf7c97f12d7bba9eeb89c8
oai_identifier_str hornero:hornero_v023_n02_p067
network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, Argentina
Efectos de la heterogeneidad del hábitat sobre la densidad y riqueza de aves en campos de soja en Entre Ríos, Argentina
title The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, Argentina
spellingShingle The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, Argentina
Goijman, Andrea P.
AVES
BOSQUE
PAISAJE AGRICOLA
SOJA
TERRAZAS
AGRICULTURAL LANDSCAPE
BIRDS
FOREST
SOYBEAN
TERRACES
title_short The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, Argentina
title_full The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, Argentina
title_fullStr The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, Argentina
title_full_unstemmed The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, Argentina
title_sort The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, Argentina
dc.creator.none.fl_str_mv Goijman, Andrea P.
Zaccagnini, María Elena
author Goijman, Andrea P.
author_facet Goijman, Andrea P.
Zaccagnini, María Elena
author_role author
author2 Zaccagnini, María Elena
author2_role author
dc.subject.none.fl_str_mv AVES
BOSQUE
PAISAJE AGRICOLA
SOJA
TERRAZAS
AGRICULTURAL LANDSCAPE
BIRDS
FOREST
SOYBEAN
TERRACES
topic AVES
BOSQUE
PAISAJE AGRICOLA
SOJA
TERRAZAS
AGRICULTURAL LANDSCAPE
BIRDS
FOREST
SOYBEAN
TERRACES
description Birds play several roles in agricultural lands and respond to habitat heterogeneity within the agricultural landscape. Agricultural intensification in Argentina has increased the sown area, mainly with soybean, fragmenting landscapes in the pampas and mesopotamic region. In Entre Ríos Province, the original Espinal forest has been fragmented, leaving remnant patches of natural vegetation, in cases modified by cattle grazing. These changes represent a potential threat for avian conservation. In Entre Ríos, terraces may be a useful habitat in maintaining avian diversity, similar to other non-cropped linear habitats in agricultural landscapes. We tested the hypothesis that habitat heterogeneity created by terraces would maintain higher species richness and densities of avian species that use original or modified forests within cropped areas compared to fields without terraces. The study was carried out in soybean fields with an adjacent forest and either herbaceous, shrub or no terraces in two periods (March-April 2004). Birds were surveyed using line transects in field interior and edge, and observations were carried out in one forest remnant adjoining each field. Most bird species recorded in soybean fields were insectivorous or consume invertebrates during the breeding season. Species richness, total bird density and the density of granivores, insectivores and omnivores were higher in fields with terraces than in fields without terraces. Moreover, shrub terraces had higher effect on species richness and bird density than herbaceous terraces. Our results suggest that terraces may serve as a possible tool for maintaining avian diversity in agroecosystems in Entre Ríos.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
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 https://hdl.handle.net/20.500.12110/hornero_v023_n02_p067
url https://hdl.handle.net/20.500.12110/hornero_v023_n02_p067
dc.language.none.fl_str_mv eng
language eng
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
dc.publisher.none.fl_str_mv Aves Argentinas. Asociación Ornitológica del Plata
publisher.none.fl_str_mv Aves Argentinas. Asociación Ornitológica del Plata
dc.source.none.fl_str_mv Hornero (en línea) 2008;02(023):067-076
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (UBA-FCEN)
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
_version_ 1799196703722569728
spelling The effects of habitat heterogeneity on avian density and richness in soybean fields in Entre Ríos, ArgentinaEfectos de la heterogeneidad del hábitat sobre la densidad y riqueza de aves en campos de soja en Entre Ríos, ArgentinaGoijman, Andrea P.Zaccagnini, María ElenaAVESBOSQUEPAISAJE AGRICOLASOJATERRAZASAGRICULTURAL LANDSCAPEBIRDSFORESTSOYBEANTERRACESBirds play several roles in agricultural lands and respond to habitat heterogeneity within the agricultural landscape. Agricultural intensification in Argentina has increased the sown area, mainly with soybean, fragmenting landscapes in the pampas and mesopotamic region. In Entre Ríos Province, the original Espinal forest has been fragmented, leaving remnant patches of natural vegetation, in cases modified by cattle grazing. These changes represent a potential threat for avian conservation. In Entre Ríos, terraces may be a useful habitat in maintaining avian diversity, similar to other non-cropped linear habitats in agricultural landscapes. We tested the hypothesis that habitat heterogeneity created by terraces would maintain higher species richness and densities of avian species that use original or modified forests within cropped areas compared to fields without terraces. The study was carried out in soybean fields with an adjacent forest and either herbaceous, shrub or no terraces in two periods (March-April 2004). Birds were surveyed using line transects in field interior and edge, and observations were carried out in one forest remnant adjoining each field. Most bird species recorded in soybean fields were insectivorous or consume invertebrates during the breeding season. Species richness, total bird density and the density of granivores, insectivores and omnivores were higher in fields with terraces than in fields without terraces. Moreover, shrub terraces had higher effect on species richness and bird density than herbaceous terraces. Our results suggest that terraces may serve as a possible tool for maintaining avian diversity in agroecosystems in Entre Ríos.Las aves tienen varios roles en los agroecosistemas y responden a la heterogeneidad de hábitat dentro del paisaje agrícola. La intensificación agrícola en Argentina ha incrementado el área cultivada, principalmente con soja, fragmentando paisajes en la Región Pampeana y en la Región Mesopotámica. En la provincia de Entre Ríos, el bosque original del Espinal ha sido fragmentado, dejando parches remanentes de vegetación natural, en algunos casos modificados por el pastoreo del ganado. Estos cambios representan una amenaza para la conservación de aves. En Entre Ríos, las terrazas pueden ser un hábitat útil para mantener la diversidad de aves, como sucede con otros hábitats lineales. Se puso a prueba la hipótesis que la heterogeneidad de hábitat generada por las terrazas mantiene una mayor riqueza de especies y una mayor densidad de aves que usan bosques modificados u originales, comparado a campos sin terrazas. El estudio fue realizado en campos de soja con parches de bosque adyacente, con terrazas herbáceas, arbustivas y sin terrazas, en dos períodos (marzo-abril 2004). Las aves fueron muestreadas mediante transectas lineales en el interior y en el borde del cultivo, y se realizaron observaciones en un remanente de bosque adyacente a cada campo. La mayoría de las especies de aves registradas en los campos de soja son insectívoras o consumen invertebrados durante la época reproductiva. La riqueza de especies, la densidad total y la densidad de aves insectívoras, granívoras y omnívoras fueron mayores en campos con terrazas que en los campos sin terrazas. A su vez, las terrazas de composición arbustiva tuvieron mayor efecto sobre la riqueza y la densidad de aves que las terrazas herbáceas. Los resultados sugieren que las terrazas podrían servir como una posible herramienta para mantener la diversidad de aves en agroecosistemas en Entre Ríos.Aves Argentinas. Asociación Ornitológica del Plata2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://hdl.handle.net/20.500.12110/hornero_v023_n02_p067Hornero (en línea) 2008;02(023):067-076reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar2024-05-10T10:42:59Zhornero:hornero_v023_n02_p067Institucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962024-05-10 10:43:00.267Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
score 15.812455

Similares en LA Referencia