Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina

Autores
Gurtler, Ricardo Esteban; Rodríguez Planes, Lucía Inés; Gil, Guillermo; Izquierdo, V. Martín; Cavicchia, Marcelo; Maranta, Aristóbulo
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Exotic ungulates are among the top global invasive mammals and a threat to biodiversity. Axis deer (Axis axis) and wild boar (Sus scrofa) are of increasing concern in multiple regions. A management program reduced wild boar abundance and soil damage below target levels through controlled still shooting from watchtowers and dog-hunting performed by recreational hunters at El Palmar National Park, Argentina. Here we assess program impacts on axis deer over a 10-year period in which 2380 deer were dispatched, and document two largely unexpected outcomes: increasing axis deer abundance toward a plateau, and a strong inverse correlation between deer and wild boar numbers. Unlike the initial steep decline and subsequent stabilization of wild boar, deer abundance indexed by standardized catch-per-unit-effort increased at 37.6% per year over 0–5 years post-intervention (YPI) and stabilized from 7 YPI on when still-shooting effort averaged 948 hunting party-hours per quarter. Deer catch was non-linearly related to still-shooting effort. Timing of deer and boar catches did not differ significantly regardless of sex, season and YPI. Catch-per-unit-effort indices and nightly spotlight deer counts showed similarly increasing trends. The fraction of older adult deer declined over 0–4 YPI and remained stable thereafter. Sex ratios were consistently skewed toward males only among older adults. Failure to reduce deer abundance may be explained by several major processes: protracted exponential growth of the deer population after park invasion; deer regional expansion with increasing immigration; insufficient sex- and stage-biased hunting mortality, and competitor (and perhaps predator) release from wild boar.
Fil: Gurtler, Ricardo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Rodríguez Planes, Lucía Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Gil, Guillermo. Administración de Parques Nacionales; Argentina
Fil: Izquierdo, V. Martín. Administración de Parques Nacionales; Argentina
Fil: Cavicchia, Marcelo. Administración de Parques Nacionales; Argentina
Fil: Maranta, Aristóbulo. Administración de Parques Nacionales; Argentina
Materia
Invasion Biology
Population Dynamics
Protected Areas
Sustainability
Ungulate
Wildlife Management
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:11336/60129
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/60129
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern ArgentinaGurtler, Ricardo EstebanRodríguez Planes, Lucía InésGil, GuillermoIzquierdo, V. MartínCavicchia, MarceloMaranta, AristóbuloInvasion BiologyPopulation DynamicsProtected AreasSustainabilityUngulateWildlife Managementhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Exotic ungulates are among the top global invasive mammals and a threat to biodiversity. Axis deer (Axis axis) and wild boar (Sus scrofa) are of increasing concern in multiple regions. A management program reduced wild boar abundance and soil damage below target levels through controlled still shooting from watchtowers and dog-hunting performed by recreational hunters at El Palmar National Park, Argentina. Here we assess program impacts on axis deer over a 10-year period in which 2380 deer were dispatched, and document two largely unexpected outcomes: increasing axis deer abundance toward a plateau, and a strong inverse correlation between deer and wild boar numbers. Unlike the initial steep decline and subsequent stabilization of wild boar, deer abundance indexed by standardized catch-per-unit-effort increased at 37.6% per year over 0–5 years post-intervention (YPI) and stabilized from 7 YPI on when still-shooting effort averaged 948 hunting party-hours per quarter. Deer catch was non-linearly related to still-shooting effort. Timing of deer and boar catches did not differ significantly regardless of sex, season and YPI. Catch-per-unit-effort indices and nightly spotlight deer counts showed similarly increasing trends. The fraction of older adult deer declined over 0–4 YPI and remained stable thereafter. Sex ratios were consistently skewed toward males only among older adults. Failure to reduce deer abundance may be explained by several major processes: protracted exponential growth of the deer population after park invasion; deer regional expansion with increasing immigration; insufficient sex- and stage-biased hunting mortality, and competitor (and perhaps predator) release from wild boar.Fil: Gurtler, Ricardo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Rodríguez Planes, Lucía Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Gil, Guillermo. Administración de Parques Nacionales; ArgentinaFil: Izquierdo, V. Martín. Administración de Parques Nacionales; ArgentinaFil: Cavicchia, Marcelo. Administración de Parques Nacionales; ArgentinaFil: Maranta, Aristóbulo. Administración de Parques Nacionales; ArgentinaSpringer2018-06info: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/11336/60129Gurtler, Ricardo Esteban; Rodríguez Planes, Lucía Inés; Gil, Guillermo; Izquierdo, V. Martín; Cavicchia, Marcelo; et al.; Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina; Springer; Biological Invasions; 20; 6; 6-2018; 1431-14471387-3547CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10530-017-1635-6info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10530-017-1635-6info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:59:21Zoai:ri.conicet.gov.ar:11336/60129instacron: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 09:59:21.913CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina
title Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina
spellingShingle Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina
Gurtler, Ricardo Esteban
Invasion Biology
Population Dynamics
Protected Areas
Sustainability
Ungulate
Wildlife Management
title_short Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina
title_full Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina
title_fullStr Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina
title_full_unstemmed Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina
title_sort Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina
dc.creator.none.fl_str_mv Gurtler, Ricardo Esteban
Rodríguez Planes, Lucía Inés
Gil, Guillermo
Izquierdo, V. Martín
Cavicchia, Marcelo
Maranta, Aristóbulo
author Gurtler, Ricardo Esteban
author_facet Gurtler, Ricardo Esteban
Rodríguez Planes, Lucía Inés
Gil, Guillermo
Izquierdo, V. Martín
Cavicchia, Marcelo
Maranta, Aristóbulo
author_role author
author2 Rodríguez Planes, Lucía Inés
Gil, Guillermo
Izquierdo, V. Martín
Cavicchia, Marcelo
Maranta, Aristóbulo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Invasion Biology
Population Dynamics
Protected Areas
Sustainability
Ungulate
Wildlife Management
topic Invasion Biology
Population Dynamics
Protected Areas
Sustainability
Ungulate
Wildlife Management
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Exotic ungulates are among the top global invasive mammals and a threat to biodiversity. Axis deer (Axis axis) and wild boar (Sus scrofa) are of increasing concern in multiple regions. A management program reduced wild boar abundance and soil damage below target levels through controlled still shooting from watchtowers and dog-hunting performed by recreational hunters at El Palmar National Park, Argentina. Here we assess program impacts on axis deer over a 10-year period in which 2380 deer were dispatched, and document two largely unexpected outcomes: increasing axis deer abundance toward a plateau, and a strong inverse correlation between deer and wild boar numbers. Unlike the initial steep decline and subsequent stabilization of wild boar, deer abundance indexed by standardized catch-per-unit-effort increased at 37.6% per year over 0–5 years post-intervention (YPI) and stabilized from 7 YPI on when still-shooting effort averaged 948 hunting party-hours per quarter. Deer catch was non-linearly related to still-shooting effort. Timing of deer and boar catches did not differ significantly regardless of sex, season and YPI. Catch-per-unit-effort indices and nightly spotlight deer counts showed similarly increasing trends. The fraction of older adult deer declined over 0–4 YPI and remained stable thereafter. Sex ratios were consistently skewed toward males only among older adults. Failure to reduce deer abundance may be explained by several major processes: protracted exponential growth of the deer population after park invasion; deer regional expansion with increasing immigration; insufficient sex- and stage-biased hunting mortality, and competitor (and perhaps predator) release from wild boar.
Fil: Gurtler, Ricardo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Rodríguez Planes, Lucía Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Gil, Guillermo. Administración de Parques Nacionales; Argentina
Fil: Izquierdo, V. Martín. Administración de Parques Nacionales; Argentina
Fil: Cavicchia, Marcelo. Administración de Parques Nacionales; Argentina
Fil: Maranta, Aristóbulo. Administración de Parques Nacionales; Argentina
description Exotic ungulates are among the top global invasive mammals and a threat to biodiversity. Axis deer (Axis axis) and wild boar (Sus scrofa) are of increasing concern in multiple regions. A management program reduced wild boar abundance and soil damage below target levels through controlled still shooting from watchtowers and dog-hunting performed by recreational hunters at El Palmar National Park, Argentina. Here we assess program impacts on axis deer over a 10-year period in which 2380 deer were dispatched, and document two largely unexpected outcomes: increasing axis deer abundance toward a plateau, and a strong inverse correlation between deer and wild boar numbers. Unlike the initial steep decline and subsequent stabilization of wild boar, deer abundance indexed by standardized catch-per-unit-effort increased at 37.6% per year over 0–5 years post-intervention (YPI) and stabilized from 7 YPI on when still-shooting effort averaged 948 hunting party-hours per quarter. Deer catch was non-linearly related to still-shooting effort. Timing of deer and boar catches did not differ significantly regardless of sex, season and YPI. Catch-per-unit-effort indices and nightly spotlight deer counts showed similarly increasing trends. The fraction of older adult deer declined over 0–4 YPI and remained stable thereafter. Sex ratios were consistently skewed toward males only among older adults. Failure to reduce deer abundance may be explained by several major processes: protracted exponential growth of the deer population after park invasion; deer regional expansion with increasing immigration; insufficient sex- and stage-biased hunting mortality, and competitor (and perhaps predator) release from wild boar.
publishDate 2018
dc.date.none.fl_str_mv 2018-06
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/11336/60129
Gurtler, Ricardo Esteban; Rodríguez Planes, Lucía Inés; Gil, Guillermo; Izquierdo, V. Martín; Cavicchia, Marcelo; et al.; Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina; Springer; Biological Invasions; 20; 6; 6-2018; 1431-1447
1387-3547
CONICET Digital
CONICET
url http://hdl.handle.net/11336/60129
identifier_str_mv Gurtler, Ricardo Esteban; Rodríguez Planes, Lucía Inés; Gil, Guillermo; Izquierdo, V. Martín; Cavicchia, Marcelo; et al.; Differential long-term impacts of a management control program of axis deer and wild boar in a protected area of north-eastern Argentina; Springer; Biological Invasions; 20; 6; 6-2018; 1431-1447
1387-3547
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s10530-017-1635-6
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10530-017-1635-6
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 Springer
publisher.none.fl_str_mv Springer
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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score 13.070432

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