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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/242184
Ver los metadatos del registro completo
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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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1846781301318746112 |
score |
12.982451 |