Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)

Autores
Di Cola Bucciarelli, Valeria; Cardozo Milanesio, Gabriela Alejandra; Lamfri, Mario; Scavuzzo, Carlos Marcelo; Chiaraviglio, Margarita
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The viviparous snake species Epicrates cenchria alvarezi and Boa constrictor occidentalis inhabit the Gran Chaco region of South America. Ecological factors determining their distribution are poorly known. GIS-based modelling of a species’ environmental requirements using occurrence records provides essential information of the species’ distribution. We modelled the geographical distribution of E. c. alvarezi and B. c. occidentalis in the Gran Chaco and analyzed the degree to which their distribution is associated with different environmental variables (precipitation, normalized difference vegetation index (NDVI), land surface temperature and altitude) using Logistic Regression Analysis. We found that E. c. alvarezi and B. c. occidentalis would be more frequent in areas with high levels of NDVI (positive relationship with NDVI1), with low levels of precipitation (negative relationship with PRE1) and with lower altitude (negative relationship with ALT). However, the analysis also revealed specific differences in the environmental requirements of the snakes, showing that B. c. occidentalis is more frequent than E. c. alvarezi at sites with higher levels of NDVI. Additionally, E. c. alvarezi is more frequent at sites with lower temperatures in the dry season. The maps obtained show that both are highly likely to be present in the Dry subregion of the Gran Chaco. The results of the present study can be an important contribution to a better understanding of the ecological requirements of the species and of the impact of global environmental change on its distribution.
Fil: Di Cola Bucciarelli, Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Cardozo Milanesio, Gabriela Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Lamfri, Mario. Comisión Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; Argentina
Fil: Scavuzzo, Carlos Marcelo. Comisión Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; Argentina
Fil: Chiaraviglio, Margarita. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Materia
BOIDAE
CONSERVATION
GIS ANALYSIS
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:11336/242184
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/242184
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network_name_str CONICET Digital (CONICET)
spelling Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)Di Cola Bucciarelli, ValeriaCardozo Milanesio, Gabriela AlejandraLamfri, MarioScavuzzo, Carlos MarceloChiaraviglio, MargaritaBOIDAECONSERVATIONGIS ANALYSIShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The viviparous snake species Epicrates cenchria alvarezi and Boa constrictor occidentalis inhabit the Gran Chaco region of South America. Ecological factors determining their distribution are poorly known. GIS-based modelling of a species’ environmental requirements using occurrence records provides essential information of the species’ distribution. We modelled the geographical distribution of E. c. alvarezi and B. c. occidentalis in the Gran Chaco and analyzed the degree to which their distribution is associated with different environmental variables (precipitation, normalized difference vegetation index (NDVI), land surface temperature and altitude) using Logistic Regression Analysis. We found that E. c. alvarezi and B. c. occidentalis would be more frequent in areas with high levels of NDVI (positive relationship with NDVI1), with low levels of precipitation (negative relationship with PRE1) and with lower altitude (negative relationship with ALT). However, the analysis also revealed specific differences in the environmental requirements of the snakes, showing that B. c. occidentalis is more frequent than E. c. alvarezi at sites with higher levels of NDVI. Additionally, E. c. alvarezi is more frequent at sites with lower temperatures in the dry season. The maps obtained show that both are highly likely to be present in the Dry subregion of the Gran Chaco. The results of the present study can be an important contribution to a better understanding of the ecological requirements of the species and of the impact of global environmental change on its distribution.Fil: Di Cola Bucciarelli, Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaFil: Cardozo Milanesio, Gabriela Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaFil: Lamfri, Mario. Comisión Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; ArgentinaFil: Scavuzzo, Carlos Marcelo. Comisión Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; ArgentinaFil: Chiaraviglio, Margarita. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaBrill Academic Publishers2008-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/242184Di Cola Bucciarelli, Valeria; Cardozo Milanesio, Gabriela Alejandra; Lamfri, Mario; Scavuzzo, Carlos Marcelo; Chiaraviglio, Margarita; Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America); Brill Academic Publishers; Amphibia-Reptilia; 29; 3; 7-2008; 299-3100173-5373CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://brill.com/view/journals/amre/29/3/article-p299_1.xmlinfo:eu-repo/semantics/altIdentifier/doi/10.1163/156853808785112138info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:04:26Zoai:ri.conicet.gov.ar:11336/242184instacron: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 11:04:26.561CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)
title Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)
spellingShingle Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)
Di Cola Bucciarelli, Valeria
BOIDAE
CONSERVATION
GIS ANALYSIS
title_short Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)
title_full Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)
title_fullStr Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)
title_full_unstemmed Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)
title_sort Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America)
dc.creator.none.fl_str_mv Di Cola Bucciarelli, Valeria
Cardozo Milanesio, Gabriela Alejandra
Lamfri, Mario
Scavuzzo, Carlos Marcelo
Chiaraviglio, Margarita
author Di Cola Bucciarelli, Valeria
author_facet Di Cola Bucciarelli, Valeria
Cardozo Milanesio, Gabriela Alejandra
Lamfri, Mario
Scavuzzo, Carlos Marcelo
Chiaraviglio, Margarita
author_role author
author2 Cardozo Milanesio, Gabriela Alejandra
Lamfri, Mario
Scavuzzo, Carlos Marcelo
Chiaraviglio, Margarita
author2_role author
author
author
author
dc.subject.none.fl_str_mv BOIDAE
CONSERVATION
GIS ANALYSIS
topic BOIDAE
CONSERVATION
GIS ANALYSIS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The viviparous snake species Epicrates cenchria alvarezi and Boa constrictor occidentalis inhabit the Gran Chaco region of South America. Ecological factors determining their distribution are poorly known. GIS-based modelling of a species’ environmental requirements using occurrence records provides essential information of the species’ distribution. We modelled the geographical distribution of E. c. alvarezi and B. c. occidentalis in the Gran Chaco and analyzed the degree to which their distribution is associated with different environmental variables (precipitation, normalized difference vegetation index (NDVI), land surface temperature and altitude) using Logistic Regression Analysis. We found that E. c. alvarezi and B. c. occidentalis would be more frequent in areas with high levels of NDVI (positive relationship with NDVI1), with low levels of precipitation (negative relationship with PRE1) and with lower altitude (negative relationship with ALT). However, the analysis also revealed specific differences in the environmental requirements of the snakes, showing that B. c. occidentalis is more frequent than E. c. alvarezi at sites with higher levels of NDVI. Additionally, E. c. alvarezi is more frequent at sites with lower temperatures in the dry season. The maps obtained show that both are highly likely to be present in the Dry subregion of the Gran Chaco. The results of the present study can be an important contribution to a better understanding of the ecological requirements of the species and of the impact of global environmental change on its distribution.
Fil: Di Cola Bucciarelli, Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Cardozo Milanesio, Gabriela Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Lamfri, Mario. Comisión Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; Argentina
Fil: Scavuzzo, Carlos Marcelo. Comisión Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; Argentina
Fil: Chiaraviglio, Margarita. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
description The viviparous snake species Epicrates cenchria alvarezi and Boa constrictor occidentalis inhabit the Gran Chaco region of South America. Ecological factors determining their distribution are poorly known. GIS-based modelling of a species’ environmental requirements using occurrence records provides essential information of the species’ distribution. We modelled the geographical distribution of E. c. alvarezi and B. c. occidentalis in the Gran Chaco and analyzed the degree to which their distribution is associated with different environmental variables (precipitation, normalized difference vegetation index (NDVI), land surface temperature and altitude) using Logistic Regression Analysis. We found that E. c. alvarezi and B. c. occidentalis would be more frequent in areas with high levels of NDVI (positive relationship with NDVI1), with low levels of precipitation (negative relationship with PRE1) and with lower altitude (negative relationship with ALT). However, the analysis also revealed specific differences in the environmental requirements of the snakes, showing that B. c. occidentalis is more frequent than E. c. alvarezi at sites with higher levels of NDVI. Additionally, E. c. alvarezi is more frequent at sites with lower temperatures in the dry season. The maps obtained show that both are highly likely to be present in the Dry subregion of the Gran Chaco. The results of the present study can be an important contribution to a better understanding of the ecological requirements of the species and of the impact of global environmental change on its distribution.
publishDate 2008
dc.date.none.fl_str_mv 2008-07
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/11336/242184
Di Cola Bucciarelli, Valeria; Cardozo Milanesio, Gabriela Alejandra; Lamfri, Mario; Scavuzzo, Carlos Marcelo; Chiaraviglio, Margarita; Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America); Brill Academic Publishers; Amphibia-Reptilia; 29; 3; 7-2008; 299-310
0173-5373
CONICET Digital
CONICET
url http://hdl.handle.net/11336/242184
identifier_str_mv Di Cola Bucciarelli, Valeria; Cardozo Milanesio, Gabriela Alejandra; Lamfri, Mario; Scavuzzo, Carlos Marcelo; Chiaraviglio, Margarita; Modelling the distribution of the Boid snakes, Epicrates cenchria alvarezi and Boa constrictor occidentalis in the Gran Chaco (South America); Brill Academic Publishers; Amphibia-Reptilia; 29; 3; 7-2008; 299-310
0173-5373
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://brill.com/view/journals/amre/29/3/article-p299_1.xml
info:eu-repo/semantics/altIdentifier/doi/10.1163/156853808785112138
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.publisher.none.fl_str_mv Brill Academic Publishers
publisher.none.fl_str_mv Brill Academic Publishers
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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