Ungulate presence and predation risks reduce acorn predation by mice in dehesas
Foraging decisions by rodents are key for the long-term maintenance of oak populations in which avian seed dispersers are absent or inefficient. Decisions are determined by the environmental setting in which acorn-rodent encounters occur. In particular, seed value, competition and predation risks ha...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/706527 |
| Acceso en línea: | http://hdl.handle.net/10486/706527 https://dx.doi.org/10.1371/journal.pone.0260419 |
| Access Level: | acceso abierto |
| Palabra clave: | Quercus Hoarding Apodemus Biología y Biomedicina / Biología |
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Ungulate presence and predation risks reduce acorn predation by mice in dehesasMorán López, TeresaSánchez Dávila, JesúsTorre, IgnasiNavarro Castilla, ÁlvaroBarja Núñez, IsabelDíaz, MarioQuercusHoardingApodemusBiología y Biomedicina / BiologíaForaging decisions by rodents are key for the long-term maintenance of oak populations in which avian seed dispersers are absent or inefficient. Decisions are determined by the environmental setting in which acorn-rodent encounters occur. In particular, seed value, competition and predation risks have been found to modify rodent foraging decisions in forest and human-modified habitats. Nonetheless, there is little information about their joint effects on rodent behavior, and hence, local acorn dispersal (or predation). In this work, we manipulate and model the mouse-oak interaction in a Spanish dehesa, an anthropogenic savanna system in which nearby areas can show contrasting levels of ungulate densities and antipredatory cover. First, we conducted a large-scale cafeteria field experiment, where we modified ungulate presence and predation risk, and followed mouse foraging decisions under contrasting levels of moonlight and acorn availability. Then, we estimated the net effects of competition and risk by means of a transition probability model that simulated mouse foraging decisions. Our results show that mice are able to adapt their foraging decisions to the environmental context, affecting initial fates of handled acorns. Under high predation risks mice foraged opportunistically carrying away large and small seeds, whereas under safe conditions large acorns tended to be predated in situ. In addition, in the presence of ungulates lack of antipredatory cover around trees reduced mice activity outside tree canopies, and hence, large acorns had a higher probability of survival. Overall, our results point out that inter-specific interactions preventing efficient foraging by scatter-hoarders can reduce acorn predation. This suggests that the maintenance of the full set of seed consumers as well as top predators in dehesas may be key for promoting local dispersalPublic Library of ScienceDepartamento de BiologíaFacultad de Ciencias20222022-08-15research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/706527https://dx.doi.org/10.1371/journal.pone.0260419reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7065272026-06-23T12:46:27Z |
| dc.title.none.fl_str_mv |
Ungulate presence and predation risks reduce acorn predation by mice in dehesas |
| title |
Ungulate presence and predation risks reduce acorn predation by mice in dehesas |
| spellingShingle |
Ungulate presence and predation risks reduce acorn predation by mice in dehesas Morán López, Teresa Quercus Hoarding Apodemus Biología y Biomedicina / Biología |
| title_short |
Ungulate presence and predation risks reduce acorn predation by mice in dehesas |
| title_full |
Ungulate presence and predation risks reduce acorn predation by mice in dehesas |
| title_fullStr |
Ungulate presence and predation risks reduce acorn predation by mice in dehesas |
| title_full_unstemmed |
Ungulate presence and predation risks reduce acorn predation by mice in dehesas |
| title_sort |
Ungulate presence and predation risks reduce acorn predation by mice in dehesas |
| dc.creator.none.fl_str_mv |
Morán López, Teresa Sánchez Dávila, Jesús Torre, Ignasi Navarro Castilla, Álvaro Barja Núñez, Isabel Díaz, Mario |
| author |
Morán López, Teresa |
| author_facet |
Morán López, Teresa Sánchez Dávila, Jesús Torre, Ignasi Navarro Castilla, Álvaro Barja Núñez, Isabel Díaz, Mario |
| author_role |
author |
| author2 |
Sánchez Dávila, Jesús Torre, Ignasi Navarro Castilla, Álvaro Barja Núñez, Isabel Díaz, Mario |
| author2_role |
author author author author author |
| dc.contributor.none.fl_str_mv |
Departamento de Biología Facultad de Ciencias |
| dc.subject.none.fl_str_mv |
Quercus Hoarding Apodemus Biología y Biomedicina / Biología |
| topic |
Quercus Hoarding Apodemus Biología y Biomedicina / Biología |
| description |
Foraging decisions by rodents are key for the long-term maintenance of oak populations in which avian seed dispersers are absent or inefficient. Decisions are determined by the environmental setting in which acorn-rodent encounters occur. In particular, seed value, competition and predation risks have been found to modify rodent foraging decisions in forest and human-modified habitats. Nonetheless, there is little information about their joint effects on rodent behavior, and hence, local acorn dispersal (or predation). In this work, we manipulate and model the mouse-oak interaction in a Spanish dehesa, an anthropogenic savanna system in which nearby areas can show contrasting levels of ungulate densities and antipredatory cover. First, we conducted a large-scale cafeteria field experiment, where we modified ungulate presence and predation risk, and followed mouse foraging decisions under contrasting levels of moonlight and acorn availability. Then, we estimated the net effects of competition and risk by means of a transition probability model that simulated mouse foraging decisions. Our results show that mice are able to adapt their foraging decisions to the environmental context, affecting initial fates of handled acorns. Under high predation risks mice foraged opportunistically carrying away large and small seeds, whereas under safe conditions large acorns tended to be predated in situ. In addition, in the presence of ungulates lack of antipredatory cover around trees reduced mice activity outside tree canopies, and hence, large acorns had a higher probability of survival. Overall, our results point out that inter-specific interactions preventing efficient foraging by scatter-hoarders can reduce acorn predation. This suggests that the maintenance of the full set of seed consumers as well as top predators in dehesas may be key for promoting local dispersal |
| publishDate |
2022 |
| dc.date.none.fl_str_mv |
2022 2022-08-15 |
| dc.type.none.fl_str_mv |
research article http://purl.org/coar/resource_type/c_2df8fbb1 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10486/706527 https://dx.doi.org/10.1371/journal.pone.0260419 |
| url |
http://hdl.handle.net/10486/706527 https://dx.doi.org/10.1371/journal.pone.0260419 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf |
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Public Library of Science |
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Public Library of Science |
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reponame:Biblos-e Archivo. Repositorio Institucional de la UAM instname:Universidad Autónoma de Madrid |
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Universidad Autónoma de Madrid |
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Biblos-e Archivo. Repositorio Institucional de la UAM |
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Biblos-e Archivo. Repositorio Institucional de la UAM |
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