Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the Azores
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/25517 https://doi.org/10.1007/s10342-013-0769-z |
Resumo: | The last remains of native laurel forest in the Azores are highly threatened by the spread of invasive plants. Because landslides are very frequent in these islands, conservation of native laurel forest requires knowledge of the patterns of bird-dispersed seed rain into forest gaps. We monitored 78 seed traps over 1 year to investigate (1) the role of perches in attracting avian dispersers into gaps, (2) temporal patterns in the dispersal of exotic and native seeds, (3) how seed rain affects vegetation establishment in gaps at different distances from the native forest and (4) whether the caloric content of fruits could explain the number of seeds dispersed. Perches were highly effective in concentrating avian seed dispersal. While some native fruits are produced all year-round, most exotic plants set fruits during the main peak of the native fruit production (August–November). Most seeds recovered from the traps were native, and native seed rain inside the native forest was higher than in gaps. However, deposition of exotic seeds was not affected by distance from native forest. Seed dispersal frequencies monitored by seed traps and by faecal analysis were correlated with each other, but not with fruit caloric content, suggesting that other factors are more important that the nutritional value in predicting avian fruit choice. Forest restoration activities should take into consideration that seed dispersal decreases sharply beyond 100 m from native forest and the attractive potential of perches to direct natural seed dispersal into forest gaps. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the AzoresAzoresExotic seedsFrugivoresFruit caloric contentLandslidesPerchesSeed dispersalThe last remains of native laurel forest in the Azores are highly threatened by the spread of invasive plants. Because landslides are very frequent in these islands, conservation of native laurel forest requires knowledge of the patterns of bird-dispersed seed rain into forest gaps. We monitored 78 seed traps over 1 year to investigate (1) the role of perches in attracting avian dispersers into gaps, (2) temporal patterns in the dispersal of exotic and native seeds, (3) how seed rain affects vegetation establishment in gaps at different distances from the native forest and (4) whether the caloric content of fruits could explain the number of seeds dispersed. Perches were highly effective in concentrating avian seed dispersal. While some native fruits are produced all year-round, most exotic plants set fruits during the main peak of the native fruit production (August–November). Most seeds recovered from the traps were native, and native seed rain inside the native forest was higher than in gaps. However, deposition of exotic seeds was not affected by distance from native forest. Seed dispersal frequencies monitored by seed traps and by faecal analysis were correlated with each other, but not with fruit caloric content, suggesting that other factors are more important that the nutritional value in predicting avian fruit choice. Forest restoration activities should take into consideration that seed dispersal decreases sharply beyond 100 m from native forest and the attractive potential of perches to direct natural seed dispersal into forest gaps.Springer-Verlag2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/25517http://hdl.handle.net/10316/25517https://doi.org/10.1007/s10342-013-0769-zenghttp://link.springer.com/article/10.1007%2Fs10342-013-0769-zParejo, Sandra HervíasCeia, Ricardo S.Ramos, Jaime A.Sampaio, Hugo L.Heleno, Rubeninfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-08-31T08:47:46Zoai:estudogeral.uc.pt:10316/25517Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:56:01.222873Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the Azores |
title |
Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the Azores |
spellingShingle |
Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the Azores Parejo, Sandra Hervías Azores Exotic seeds Frugivores Fruit caloric content Landslides Perches Seed dispersal |
title_short |
Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the Azores |
title_full |
Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the Azores |
title_fullStr |
Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the Azores |
title_full_unstemmed |
Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the Azores |
title_sort |
Tiptoeing between restoration and invasion: seed rain into natural gaps within a highly invaded relic forest in the Azores |
author |
Parejo, Sandra Hervías |
author_facet |
Parejo, Sandra Hervías Ceia, Ricardo S. Ramos, Jaime A. Sampaio, Hugo L. Heleno, Ruben |
author_role |
author |
author2 |
Ceia, Ricardo S. Ramos, Jaime A. Sampaio, Hugo L. Heleno, Ruben |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Parejo, Sandra Hervías Ceia, Ricardo S. Ramos, Jaime A. Sampaio, Hugo L. Heleno, Ruben |
dc.subject.por.fl_str_mv |
Azores Exotic seeds Frugivores Fruit caloric content Landslides Perches Seed dispersal |
topic |
Azores Exotic seeds Frugivores Fruit caloric content Landslides Perches Seed dispersal |
description |
The last remains of native laurel forest in the Azores are highly threatened by the spread of invasive plants. Because landslides are very frequent in these islands, conservation of native laurel forest requires knowledge of the patterns of bird-dispersed seed rain into forest gaps. We monitored 78 seed traps over 1 year to investigate (1) the role of perches in attracting avian dispersers into gaps, (2) temporal patterns in the dispersal of exotic and native seeds, (3) how seed rain affects vegetation establishment in gaps at different distances from the native forest and (4) whether the caloric content of fruits could explain the number of seeds dispersed. Perches were highly effective in concentrating avian seed dispersal. While some native fruits are produced all year-round, most exotic plants set fruits during the main peak of the native fruit production (August–November). Most seeds recovered from the traps were native, and native seed rain inside the native forest was higher than in gaps. However, deposition of exotic seeds was not affected by distance from native forest. Seed dispersal frequencies monitored by seed traps and by faecal analysis were correlated with each other, but not with fruit caloric content, suggesting that other factors are more important that the nutritional value in predicting avian fruit choice. Forest restoration activities should take into consideration that seed dispersal decreases sharply beyond 100 m from native forest and the attractive potential of perches to direct natural seed dispersal into forest gaps. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/25517 http://hdl.handle.net/10316/25517 https://doi.org/10.1007/s10342-013-0769-z |
url |
http://hdl.handle.net/10316/25517 https://doi.org/10.1007/s10342-013-0769-z |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://link.springer.com/article/10.1007%2Fs10342-013-0769-z |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Springer-Verlag |
publisher.none.fl_str_mv |
Springer-Verlag |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
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1799133845537161216 |