Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic Island

Autores
Salom, Amira; Borrelli, Laura Beatriz; Testoni, Daniel; Ramos, Diego P.; Raya Rey, Andrea; Biganzoli, Fernando
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The presence of exotic herbivores can have detrimental effects on insular ecosystems because it usually involves the introduction of a previously absent functional group. Understanding feeding behavior is crucial to manage potential impacts, as it provides valuable information on which species may be most susceptible to the actions of these herbivores. We estimated diet selection of introduced red deer (Cervus elaphus) and goats (Capra hircus) in western Isla de los Estados, Argentina. We conducted floristic surveys to assess plant composition and forage availability at the landscape level. We evaluated the diet of both ungulates through microhistological analysis of feces during two spring-summer seasons. Overall, we detected 44 plant taxa in their feces, representing 67.7% of the plant richness detected in the field. Diet composition was similar between species, including a wide range of vascular plants and two groups of non-vascular plants, though both were dominated by a few species of shrubs and forbs. Nonetheless, both species select grasses, predominantly found in marine tussock grasslands, and trees mainly found as seedlings and sapling in forests and stunted trees in wetlands. Our results suggest that the introduced species exhibit overlapping forage selection, possibly having negative synergic effects on forest and grassland regeneration. This is concerning as these grasslands are of great importance for seabirds’ reproduction. Our findings provide valuable information to develop management plans for the conservation of this unique island ecosystem.
EEA Bariloche
Fil: Salom, Amira. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas. Laboratorio de Ecología y Conservación de Vida Silvestre; Argentina
Fil: Salom, Amira. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina
Fil: Borrelli, Laura Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche. Laboratorio de Microhistología; Argentina
Fil: Borrelli, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina
Fil: Testoni, Daniel. Administración de Parques Nacionales. Parque Nacional Los Glaciares; Argentina
Fil: Ramos, Diego P. Secretaría de Ambiente de la Provincia de Tierra del Fuego, Antártida e Isla del Atlántico Sur. Dirección General de Recursos Hídricos; Argentina
Fil: Raya Rey, Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas. Laboratorio de Ecología y Conservación de Vida Silvestre; Argentina
Fil: Raya Rey, Andrea. Wildlife Conservation Society; Argentina
Fil: Biganzoli, Fernando. Universidad Nacional de Buenos Aires. Facultad de Agronomía; Argentina
Fuente
Mammalian Biology : 1-12 (Published: 08 April 2025)
Materia
Ungulado
Histología
Forrajes
Venado
Caprinos
Especies Introducidas
Ungulates
Histology
Forage
Deer
Goats
Introduced Species
Especies Exóticas
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/22010
Acceder
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oai_identifier_str oai:localhost:20.500.12123/22010
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic IslandSalom, AmiraBorrelli, Laura BeatrizTestoni, DanielRamos, Diego P.Raya Rey, AndreaBiganzoli, FernandoUnguladoHistologíaForrajesVenadoCaprinosEspecies IntroducidasUngulatesHistologyForageDeerGoatsIntroduced SpeciesEspecies ExóticasThe presence of exotic herbivores can have detrimental effects on insular ecosystems because it usually involves the introduction of a previously absent functional group. Understanding feeding behavior is crucial to manage potential impacts, as it provides valuable information on which species may be most susceptible to the actions of these herbivores. We estimated diet selection of introduced red deer (Cervus elaphus) and goats (Capra hircus) in western Isla de los Estados, Argentina. We conducted floristic surveys to assess plant composition and forage availability at the landscape level. We evaluated the diet of both ungulates through microhistological analysis of feces during two spring-summer seasons. Overall, we detected 44 plant taxa in their feces, representing 67.7% of the plant richness detected in the field. Diet composition was similar between species, including a wide range of vascular plants and two groups of non-vascular plants, though both were dominated by a few species of shrubs and forbs. Nonetheless, both species select grasses, predominantly found in marine tussock grasslands, and trees mainly found as seedlings and sapling in forests and stunted trees in wetlands. Our results suggest that the introduced species exhibit overlapping forage selection, possibly having negative synergic effects on forest and grassland regeneration. This is concerning as these grasslands are of great importance for seabirds’ reproduction. Our findings provide valuable information to develop management plans for the conservation of this unique island ecosystem.EEA BarilocheFil: Salom, Amira. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas. Laboratorio de Ecología y Conservación de Vida Silvestre; ArgentinaFil: Salom, Amira. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; ArgentinaFil: Borrelli, Laura Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche. Laboratorio de Microhistología; ArgentinaFil: Borrelli, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; ArgentinaFil: Testoni, Daniel. Administración de Parques Nacionales. Parque Nacional Los Glaciares; ArgentinaFil: Ramos, Diego P. Secretaría de Ambiente de la Provincia de Tierra del Fuego, Antártida e Isla del Atlántico Sur. Dirección General de Recursos Hídricos; ArgentinaFil: Raya Rey, Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas. Laboratorio de Ecología y Conservación de Vida Silvestre; ArgentinaFil: Raya Rey, Andrea. Wildlife Conservation Society; ArgentinaFil: Biganzoli, Fernando. Universidad Nacional de Buenos Aires. Facultad de Agronomía; ArgentinaSpringer2025-04-23T12:53:20Z2025-04-23T12:53:20Z2025-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/22010https://link.springer.com/article/10.1007/s42991-025-00488-w1616-50471618-1476https://doi.org/10.1007/s42991-025-00488-wMammalian Biology : 1-12 (Published: 08 April 2025)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-04T09:51:01Zoai:localhost:20.500.12123/22010instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-04 09:51:01.629INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic Island
title Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic Island
spellingShingle Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic Island
Salom, Amira
Ungulado
Histología
Forrajes
Venado
Caprinos
Especies Introducidas
Ungulates
Histology
Forage
Deer
Goats
Introduced Species
Especies Exóticas
title_short Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic Island
title_full Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic Island
title_fullStr Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic Island
title_full_unstemmed Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic Island
title_sort Forage selection overlap between co-occurring introduced ungulates: insights for conservation management of a Sub-Antarctic Island
dc.creator.none.fl_str_mv Salom, Amira
Borrelli, Laura Beatriz
Testoni, Daniel
Ramos, Diego P.
Raya Rey, Andrea
Biganzoli, Fernando
author Salom, Amira
author_facet Salom, Amira
Borrelli, Laura Beatriz
Testoni, Daniel
Ramos, Diego P.
Raya Rey, Andrea
Biganzoli, Fernando
author_role author
author2 Borrelli, Laura Beatriz
Testoni, Daniel
Ramos, Diego P.
Raya Rey, Andrea
Biganzoli, Fernando
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ungulado
Histología
Forrajes
Venado
Caprinos
Especies Introducidas
Ungulates
Histology
Forage
Deer
Goats
Introduced Species
Especies Exóticas
topic Ungulado
Histología
Forrajes
Venado
Caprinos
Especies Introducidas
Ungulates
Histology
Forage
Deer
Goats
Introduced Species
Especies Exóticas
dc.description.none.fl_txt_mv The presence of exotic herbivores can have detrimental effects on insular ecosystems because it usually involves the introduction of a previously absent functional group. Understanding feeding behavior is crucial to manage potential impacts, as it provides valuable information on which species may be most susceptible to the actions of these herbivores. We estimated diet selection of introduced red deer (Cervus elaphus) and goats (Capra hircus) in western Isla de los Estados, Argentina. We conducted floristic surveys to assess plant composition and forage availability at the landscape level. We evaluated the diet of both ungulates through microhistological analysis of feces during two spring-summer seasons. Overall, we detected 44 plant taxa in their feces, representing 67.7% of the plant richness detected in the field. Diet composition was similar between species, including a wide range of vascular plants and two groups of non-vascular plants, though both were dominated by a few species of shrubs and forbs. Nonetheless, both species select grasses, predominantly found in marine tussock grasslands, and trees mainly found as seedlings and sapling in forests and stunted trees in wetlands. Our results suggest that the introduced species exhibit overlapping forage selection, possibly having negative synergic effects on forest and grassland regeneration. This is concerning as these grasslands are of great importance for seabirds’ reproduction. Our findings provide valuable information to develop management plans for the conservation of this unique island ecosystem.
EEA Bariloche
Fil: Salom, Amira. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas. Laboratorio de Ecología y Conservación de Vida Silvestre; Argentina
Fil: Salom, Amira. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina
Fil: Borrelli, Laura Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche. Laboratorio de Microhistología; Argentina
Fil: Borrelli, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina
Fil: Testoni, Daniel. Administración de Parques Nacionales. Parque Nacional Los Glaciares; Argentina
Fil: Ramos, Diego P. Secretaría de Ambiente de la Provincia de Tierra del Fuego, Antártida e Isla del Atlántico Sur. Dirección General de Recursos Hídricos; Argentina
Fil: Raya Rey, Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas. Laboratorio de Ecología y Conservación de Vida Silvestre; Argentina
Fil: Raya Rey, Andrea. Wildlife Conservation Society; Argentina
Fil: Biganzoli, Fernando. Universidad Nacional de Buenos Aires. Facultad de Agronomía; Argentina
description The presence of exotic herbivores can have detrimental effects on insular ecosystems because it usually involves the introduction of a previously absent functional group. Understanding feeding behavior is crucial to manage potential impacts, as it provides valuable information on which species may be most susceptible to the actions of these herbivores. We estimated diet selection of introduced red deer (Cervus elaphus) and goats (Capra hircus) in western Isla de los Estados, Argentina. We conducted floristic surveys to assess plant composition and forage availability at the landscape level. We evaluated the diet of both ungulates through microhistological analysis of feces during two spring-summer seasons. Overall, we detected 44 plant taxa in their feces, representing 67.7% of the plant richness detected in the field. Diet composition was similar between species, including a wide range of vascular plants and two groups of non-vascular plants, though both were dominated by a few species of shrubs and forbs. Nonetheless, both species select grasses, predominantly found in marine tussock grasslands, and trees mainly found as seedlings and sapling in forests and stunted trees in wetlands. Our results suggest that the introduced species exhibit overlapping forage selection, possibly having negative synergic effects on forest and grassland regeneration. This is concerning as these grasslands are of great importance for seabirds’ reproduction. Our findings provide valuable information to develop management plans for the conservation of this unique island ecosystem.
publishDate 2025
dc.date.none.fl_str_mv 2025-04-23T12:53:20Z
2025-04-23T12:53:20Z
2025-04
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/20.500.12123/22010
https://link.springer.com/article/10.1007/s42991-025-00488-w
1616-5047
1618-1476
https://doi.org/10.1007/s42991-025-00488-w
url http://hdl.handle.net/20.500.12123/22010
https://link.springer.com/article/10.1007/s42991-025-00488-w
https://doi.org/10.1007/s42991-025-00488-w
identifier_str_mv 1616-5047
1618-1476
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv Mammalian Biology : 1-12 (Published: 08 April 2025)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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