Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem
- Autores
- Lizarralde, Marta Susana; Escobar, Julio Martin; Deferrari, Guillermo Alejandro
- Año de publicación
- 2004
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Beavers (Castor canadensis) were introduced on Isla Grande of Tierra del Fuego, Argentina, in 1946. The suitable feeding and lodging sites coupled with the lack of natural predators or competitors favored rapid population growth and range expansion. This paper shows current population status and landscape modifications induced by beaver in these southern ecosystems. Beaver now occur in all streams in the Andean and extra-Andean areas and nearly all aquatic habitats on Isla Grande as well as other Chilean islands of Tierra del Fuego archipelago (70,000 km2). Low-gradient areas on small streams were more densely occupied than those of the slope valleys. Densities were similar to those in the Northern Hemisphere. Extensively colonized habitats showed 0.7 active beaver colonies per km2. Based on their different beaver occupancy patterns and frequency of colony sites, we developed four land capability classes-A, B, C and D-to use in planning and resource management. The highest densities were found in classes C and D -4.7 and 5.6 colony sites per km- indicating that both these areas had the greatest potential for beaver production. Beaver-altered sites had higher levels of organic and inorganic nitrogen suggesting that seasonal hydrological changes could be affecting nitrification and denitrification and also resulting in accumulated organic carbon and phosphorus in the stream channel. Beaver ponds may be considered sources of essential nutrients (P and N) and carbon. Chromosome analysis showed no differences with the North American karyotype. Genetic structure and variability of the beaver population are analyzed.
Fil: Lizarralde, Marta Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Escobar, Julio Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Deferrari, Guillermo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina - Materia
-
Invader
Beaver
Tierra del Fuego - 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:11336/162998
Ver los metadatos del registro completo
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3498 |
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spelling |
Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystemLizarralde, Marta SusanaEscobar, Julio MartinDeferrari, Guillermo AlejandroInvaderBeaverTierra del Fuegohttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Beavers (Castor canadensis) were introduced on Isla Grande of Tierra del Fuego, Argentina, in 1946. The suitable feeding and lodging sites coupled with the lack of natural predators or competitors favored rapid population growth and range expansion. This paper shows current population status and landscape modifications induced by beaver in these southern ecosystems. Beaver now occur in all streams in the Andean and extra-Andean areas and nearly all aquatic habitats on Isla Grande as well as other Chilean islands of Tierra del Fuego archipelago (70,000 km2). Low-gradient areas on small streams were more densely occupied than those of the slope valleys. Densities were similar to those in the Northern Hemisphere. Extensively colonized habitats showed 0.7 active beaver colonies per km2. Based on their different beaver occupancy patterns and frequency of colony sites, we developed four land capability classes-A, B, C and D-to use in planning and resource management. The highest densities were found in classes C and D -4.7 and 5.6 colony sites per km- indicating that both these areas had the greatest potential for beaver production. Beaver-altered sites had higher levels of organic and inorganic nitrogen suggesting that seasonal hydrological changes could be affecting nitrification and denitrification and also resulting in accumulated organic carbon and phosphorus in the stream channel. Beaver ponds may be considered sources of essential nutrients (P and N) and carbon. Chromosome analysis showed no differences with the North American karyotype. Genetic structure and variability of the beaver population are analyzed.Fil: Lizarralde, Marta Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Escobar, Julio Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Deferrari, Guillermo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaInterciencia2004-12info: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/11336/162998Lizarralde, Marta Susana; Escobar, Julio Martin; Deferrari, Guillermo Alejandro; Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem; Interciencia; Interciencia; 29; 7; 12-2004; 352-3560378-1844CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.redalyc.org/articulo.oa?id=33909402info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:35:57Zoai:ri.conicet.gov.ar:11336/162998instacron: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:34982025-09-29 09:35:58.06CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem |
title |
Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem |
spellingShingle |
Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem Lizarralde, Marta Susana Invader Beaver Tierra del Fuego |
title_short |
Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem |
title_full |
Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem |
title_fullStr |
Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem |
title_full_unstemmed |
Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem |
title_sort |
Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem |
dc.creator.none.fl_str_mv |
Lizarralde, Marta Susana Escobar, Julio Martin Deferrari, Guillermo Alejandro |
author |
Lizarralde, Marta Susana |
author_facet |
Lizarralde, Marta Susana Escobar, Julio Martin Deferrari, Guillermo Alejandro |
author_role |
author |
author2 |
Escobar, Julio Martin Deferrari, Guillermo Alejandro |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Invader Beaver Tierra del Fuego |
topic |
Invader Beaver Tierra del Fuego |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Beavers (Castor canadensis) were introduced on Isla Grande of Tierra del Fuego, Argentina, in 1946. The suitable feeding and lodging sites coupled with the lack of natural predators or competitors favored rapid population growth and range expansion. This paper shows current population status and landscape modifications induced by beaver in these southern ecosystems. Beaver now occur in all streams in the Andean and extra-Andean areas and nearly all aquatic habitats on Isla Grande as well as other Chilean islands of Tierra del Fuego archipelago (70,000 km2). Low-gradient areas on small streams were more densely occupied than those of the slope valleys. Densities were similar to those in the Northern Hemisphere. Extensively colonized habitats showed 0.7 active beaver colonies per km2. Based on their different beaver occupancy patterns and frequency of colony sites, we developed four land capability classes-A, B, C and D-to use in planning and resource management. The highest densities were found in classes C and D -4.7 and 5.6 colony sites per km- indicating that both these areas had the greatest potential for beaver production. Beaver-altered sites had higher levels of organic and inorganic nitrogen suggesting that seasonal hydrological changes could be affecting nitrification and denitrification and also resulting in accumulated organic carbon and phosphorus in the stream channel. Beaver ponds may be considered sources of essential nutrients (P and N) and carbon. Chromosome analysis showed no differences with the North American karyotype. Genetic structure and variability of the beaver population are analyzed. Fil: Lizarralde, Marta Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Escobar, Julio Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Deferrari, Guillermo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina |
description |
Beavers (Castor canadensis) were introduced on Isla Grande of Tierra del Fuego, Argentina, in 1946. The suitable feeding and lodging sites coupled with the lack of natural predators or competitors favored rapid population growth and range expansion. This paper shows current population status and landscape modifications induced by beaver in these southern ecosystems. Beaver now occur in all streams in the Andean and extra-Andean areas and nearly all aquatic habitats on Isla Grande as well as other Chilean islands of Tierra del Fuego archipelago (70,000 km2). Low-gradient areas on small streams were more densely occupied than those of the slope valleys. Densities were similar to those in the Northern Hemisphere. Extensively colonized habitats showed 0.7 active beaver colonies per km2. Based on their different beaver occupancy patterns and frequency of colony sites, we developed four land capability classes-A, B, C and D-to use in planning and resource management. The highest densities were found in classes C and D -4.7 and 5.6 colony sites per km- indicating that both these areas had the greatest potential for beaver production. Beaver-altered sites had higher levels of organic and inorganic nitrogen suggesting that seasonal hydrological changes could be affecting nitrification and denitrification and also resulting in accumulated organic carbon and phosphorus in the stream channel. Beaver ponds may be considered sources of essential nutrients (P and N) and carbon. Chromosome analysis showed no differences with the North American karyotype. Genetic structure and variability of the beaver population are analyzed. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-12 |
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 |
http://hdl.handle.net/11336/162998 Lizarralde, Marta Susana; Escobar, Julio Martin; Deferrari, Guillermo Alejandro; Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem; Interciencia; Interciencia; 29; 7; 12-2004; 352-356 0378-1844 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/162998 |
identifier_str_mv |
Lizarralde, Marta Susana; Escobar, Julio Martin; Deferrari, Guillermo Alejandro; Invader species of Argentina: A review about beaver (Castor canadensis) population situation on Tierra del Fuego ecosystem; Interciencia; Interciencia; 29; 7; 12-2004; 352-356 0378-1844 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://www.redalyc.org/articulo.oa?id=33909402 |
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 |
Interciencia |
publisher.none.fl_str_mv |
Interciencia |
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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1844613124620025856 |
score |
13.070432 |