Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perception

Autores
Godoy-Güinao, Javier; Canavelli, Sonia Beatriz; Márquez-García, Marcela; Silva-Rodríguez, Eduardo A.
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The economic impact of crop damage caused by wildlife can be perceived as significant by producers. Consequently, producers adopt different management strategies, which can affect the populations of the species involved. However, it is generally unknown whether producers’ damage estimates reflect actual losses, fostering conflicts between producers and conservationists. The objective of our study was to evaluate the association between damage caused by wildlife and damage perceived by producers, using interactions between native parakeets (Enicognathus spp.) and forage maize crops in southern Chile as a study model. Perceived damage was measured using a structured questionnaire, and actual losses were estimated in the field determining the percentage of plants damaged by parakeets. Producers reported that most paddocks (>80 %) did not experience losses caused by parakeets. Similarly, field measurements indicated that most paddocks (88.5 %) had damage below 5 % of the sown area. Significant losses (>5 %) were detected in 11.5 % of the paddocks. Comparing perceived and actual damage, producers underestimated damage in 62.3 % of paddocks and overestimated it in 14.8 %. Quantile regression showed that actual and perceived damage differed across levels of perceived damage. No significant association was observed at low levels, whereas at intermediate and high levels, perceived and actual losses were positively associated, with some producers underestimating and others overestimating damage as actual losses increased. Considering that perceived damage is positively associated with actual damage—especially at high levels of perceived damage— and that such damage can be severe, it is necessary to test management and financial alternatives that enable coexistence between agriculture and wildlife.
EEA Paraná
Fil: Godoy-Güinao, Javier. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Instituto de Conservación, Biodiversidad y Territorio (ICBTe). Laboratorio de Fauna Silvestre; Chile
Fil: Godoy-Güinao, Javier. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Escuela de Graduado; Chile
Fil: Godoy-Güinao, Javier. Universidad Austral de Chile. Programa Austral Patagonia; Chile
Fil: Canavelli, Sonia Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina
Fil: Márquez-García, Marcela. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Instituto de Conservación, Biodiversidad y Territorio (ICBTe). Laboratorio de Fauna Silvestre; Chile
Fil: Márquez-García, Marcela. Universidad Austral de Chile. Centro de Humedales Río Cruces; Chile
Fil: Márquez-García, Marcela. Millennium Nucleus on Citizen Technoscience for Socioenvironmental Transformation (CITEC); Chile
Fil: Silva-Rodríguez, Eduardo A.. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Instituto de Conservación, Biodiversidad y Territorio (ICBTe). Laboratorio de Fauna Silvestre; Chile
Fil: Silva-Rodríguez, Eduardo A. Universidad Austral de Chile. Programa Austral Patagonia; Chile
Fuente
Crop Protection 202 : 107523. (April 2026)
Materia
Pérdidas de la Cosecha
Vida Silvestre
Pájaros
Daños a las Plantas
Cultivos
Crop Losses
Wildlife
Birds
Plant Injuries
Crops
Enicognathus
Parakeet
Crop Damage
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:20.500.12123/24958
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oai_identifier_str oai:localhost:20.500.12123/24958
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perceptionGodoy-Güinao, JavierCanavelli, Sonia BeatrizMárquez-García, MarcelaSilva-Rodríguez, Eduardo A.Pérdidas de la CosechaVida SilvestrePájarosDaños a las PlantasCultivosCrop LossesWildlifeBirdsPlant InjuriesCropsEnicognathusParakeetCrop DamageThe economic impact of crop damage caused by wildlife can be perceived as significant by producers. Consequently, producers adopt different management strategies, which can affect the populations of the species involved. However, it is generally unknown whether producers’ damage estimates reflect actual losses, fostering conflicts between producers and conservationists. The objective of our study was to evaluate the association between damage caused by wildlife and damage perceived by producers, using interactions between native parakeets (Enicognathus spp.) and forage maize crops in southern Chile as a study model. Perceived damage was measured using a structured questionnaire, and actual losses were estimated in the field determining the percentage of plants damaged by parakeets. Producers reported that most paddocks (>80 %) did not experience losses caused by parakeets. Similarly, field measurements indicated that most paddocks (88.5 %) had damage below 5 % of the sown area. Significant losses (>5 %) were detected in 11.5 % of the paddocks. Comparing perceived and actual damage, producers underestimated damage in 62.3 % of paddocks and overestimated it in 14.8 %. Quantile regression showed that actual and perceived damage differed across levels of perceived damage. No significant association was observed at low levels, whereas at intermediate and high levels, perceived and actual losses were positively associated, with some producers underestimating and others overestimating damage as actual losses increased. Considering that perceived damage is positively associated with actual damage—especially at high levels of perceived damage— and that such damage can be severe, it is necessary to test management and financial alternatives that enable coexistence between agriculture and wildlife.EEA ParanáFil: Godoy-Güinao, Javier. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Instituto de Conservación, Biodiversidad y Territorio (ICBTe). Laboratorio de Fauna Silvestre; ChileFil: Godoy-Güinao, Javier. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Escuela de Graduado; ChileFil: Godoy-Güinao, Javier. Universidad Austral de Chile. Programa Austral Patagonia; ChileFil: Canavelli, Sonia Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; ArgentinaFil: Márquez-García, Marcela. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Instituto de Conservación, Biodiversidad y Territorio (ICBTe). Laboratorio de Fauna Silvestre; ChileFil: Márquez-García, Marcela. Universidad Austral de Chile. Centro de Humedales Río Cruces; ChileFil: Márquez-García, Marcela. Millennium Nucleus on Citizen Technoscience for Socioenvironmental Transformation (CITEC); ChileFil: Silva-Rodríguez, Eduardo A.. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Instituto de Conservación, Biodiversidad y Territorio (ICBTe). Laboratorio de Fauna Silvestre; ChileFil: Silva-Rodríguez, Eduardo A. Universidad Austral de Chile. Programa Austral Patagonia; ChileElsevier2026-01-09T11:32:38Z2026-01-09T11:32:38Z2026-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/24958https://www.sciencedirect.com/science/article/abs/pii/S02612194250041560261-21941873-6904https://doi.org/10.1016/j.cropro.2025.107523Crop Protection 202 : 107523. (April 2026)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)2026-05-14T10:43:21Zoai:localhost:20.500.12123/24958instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-05-14 10:43:21.698INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perception
title Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perception
spellingShingle Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perception
Godoy-Güinao, Javier
Pérdidas de la Cosecha
Vida Silvestre
Pájaros
Daños a las Plantas
Cultivos
Crop Losses
Wildlife
Birds
Plant Injuries
Crops
Enicognathus
Parakeet
Crop Damage
title_short Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perception
title_full Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perception
title_fullStr Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perception
title_full_unstemmed Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perception
title_sort Underestimating low and overestimating high parakeet damage: Linking crop losses and farmer perception
dc.creator.none.fl_str_mv Godoy-Güinao, Javier
Canavelli, Sonia Beatriz
Márquez-García, Marcela
Silva-Rodríguez, Eduardo A.
author Godoy-Güinao, Javier
author_facet Godoy-Güinao, Javier
Canavelli, Sonia Beatriz
Márquez-García, Marcela
Silva-Rodríguez, Eduardo A.
author_role author
author2 Canavelli, Sonia Beatriz
Márquez-García, Marcela
Silva-Rodríguez, Eduardo A.
author2_role author
author
author
dc.subject.none.fl_str_mv Pérdidas de la Cosecha
Vida Silvestre
Pájaros
Daños a las Plantas
Cultivos
Crop Losses
Wildlife
Birds
Plant Injuries
Crops
Enicognathus
Parakeet
Crop Damage
topic Pérdidas de la Cosecha
Vida Silvestre
Pájaros
Daños a las Plantas
Cultivos
Crop Losses
Wildlife
Birds
Plant Injuries
Crops
Enicognathus
Parakeet
Crop Damage
dc.description.none.fl_txt_mv The economic impact of crop damage caused by wildlife can be perceived as significant by producers. Consequently, producers adopt different management strategies, which can affect the populations of the species involved. However, it is generally unknown whether producers’ damage estimates reflect actual losses, fostering conflicts between producers and conservationists. The objective of our study was to evaluate the association between damage caused by wildlife and damage perceived by producers, using interactions between native parakeets (Enicognathus spp.) and forage maize crops in southern Chile as a study model. Perceived damage was measured using a structured questionnaire, and actual losses were estimated in the field determining the percentage of plants damaged by parakeets. Producers reported that most paddocks (>80 %) did not experience losses caused by parakeets. Similarly, field measurements indicated that most paddocks (88.5 %) had damage below 5 % of the sown area. Significant losses (>5 %) were detected in 11.5 % of the paddocks. Comparing perceived and actual damage, producers underestimated damage in 62.3 % of paddocks and overestimated it in 14.8 %. Quantile regression showed that actual and perceived damage differed across levels of perceived damage. No significant association was observed at low levels, whereas at intermediate and high levels, perceived and actual losses were positively associated, with some producers underestimating and others overestimating damage as actual losses increased. Considering that perceived damage is positively associated with actual damage—especially at high levels of perceived damage— and that such damage can be severe, it is necessary to test management and financial alternatives that enable coexistence between agriculture and wildlife.
EEA Paraná
Fil: Godoy-Güinao, Javier. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Instituto de Conservación, Biodiversidad y Territorio (ICBTe). Laboratorio de Fauna Silvestre; Chile
Fil: Godoy-Güinao, Javier. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Escuela de Graduado; Chile
Fil: Godoy-Güinao, Javier. Universidad Austral de Chile. Programa Austral Patagonia; Chile
Fil: Canavelli, Sonia Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina
Fil: Márquez-García, Marcela. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Instituto de Conservación, Biodiversidad y Territorio (ICBTe). Laboratorio de Fauna Silvestre; Chile
Fil: Márquez-García, Marcela. Universidad Austral de Chile. Centro de Humedales Río Cruces; Chile
Fil: Márquez-García, Marcela. Millennium Nucleus on Citizen Technoscience for Socioenvironmental Transformation (CITEC); Chile
Fil: Silva-Rodríguez, Eduardo A.. Universidad Austral de Chile. Facultad de Ciencias Forestales y Recursos Naturales. Instituto de Conservación, Biodiversidad y Territorio (ICBTe). Laboratorio de Fauna Silvestre; Chile
Fil: Silva-Rodríguez, Eduardo A. Universidad Austral de Chile. Programa Austral Patagonia; Chile
description The economic impact of crop damage caused by wildlife can be perceived as significant by producers. Consequently, producers adopt different management strategies, which can affect the populations of the species involved. However, it is generally unknown whether producers’ damage estimates reflect actual losses, fostering conflicts between producers and conservationists. The objective of our study was to evaluate the association between damage caused by wildlife and damage perceived by producers, using interactions between native parakeets (Enicognathus spp.) and forage maize crops in southern Chile as a study model. Perceived damage was measured using a structured questionnaire, and actual losses were estimated in the field determining the percentage of plants damaged by parakeets. Producers reported that most paddocks (>80 %) did not experience losses caused by parakeets. Similarly, field measurements indicated that most paddocks (88.5 %) had damage below 5 % of the sown area. Significant losses (>5 %) were detected in 11.5 % of the paddocks. Comparing perceived and actual damage, producers underestimated damage in 62.3 % of paddocks and overestimated it in 14.8 %. Quantile regression showed that actual and perceived damage differed across levels of perceived damage. No significant association was observed at low levels, whereas at intermediate and high levels, perceived and actual losses were positively associated, with some producers underestimating and others overestimating damage as actual losses increased. Considering that perceived damage is positively associated with actual damage—especially at high levels of perceived damage— and that such damage can be severe, it is necessary to test management and financial alternatives that enable coexistence between agriculture and wildlife.
publishDate 2026
dc.date.none.fl_str_mv 2026-01-09T11:32:38Z
2026-01-09T11:32:38Z
2026-04
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/20.500.12123/24958
https://www.sciencedirect.com/science/article/abs/pii/S0261219425004156
0261-2194
1873-6904
https://doi.org/10.1016/j.cropro.2025.107523
url http://hdl.handle.net/20.500.12123/24958
https://www.sciencedirect.com/science/article/abs/pii/S0261219425004156
https://doi.org/10.1016/j.cropro.2025.107523
identifier_str_mv 0261-2194
1873-6904
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 Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Crop Protection 202 : 107523. (April 2026)
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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score 12.604774

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