Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia?
Autor(a) principal: | |
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Data de Publicação: | 2009 |
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/10174/6753 |
Resumo: | Little is known on the importance of water courses as migratory corridors. Here, we present the results of an investigation on the movements of diurnal migrants associated with the Guadiana River when crossing dry and inhospitable regions of southern Iberia. Direct observations were carried out along the river and at control sites away from it, in late August-November 2006. The number of birds seen was extremely small (<< 1 individual per hour for most species) and most records probably involved individuals in local movements, as indicated from similar rates of birds moving up and downriver. The only exceptions were hirundines which, within our study area, were strongly associated with the Guadiana both when foraging and when engaged in medium to long-distance daily movements. House Martins Delichon urbicum were particularly numerous, and 98.7% of the birds seen in directed movement (n = 4122) were flying above the river. However, passing hirundines (mostly Barn Swallow Hirundo rustica and Sand Martins Riparia riparia) were scarce and did not show the same degree of association with the Guadiana. Our results suggest that there is no significant migratory corridor along the lower Guadiana during summer-autumn, but hirundines strongly associate with this river when foraging and when commuting between foraging grounds and roosts. |
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Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia?migrationleading linesDelichonHirundoLittle is known on the importance of water courses as migratory corridors. Here, we present the results of an investigation on the movements of diurnal migrants associated with the Guadiana River when crossing dry and inhospitable regions of southern Iberia. Direct observations were carried out along the river and at control sites away from it, in late August-November 2006. The number of birds seen was extremely small (<< 1 individual per hour for most species) and most records probably involved individuals in local movements, as indicated from similar rates of birds moving up and downriver. The only exceptions were hirundines which, within our study area, were strongly associated with the Guadiana both when foraging and when engaged in medium to long-distance daily movements. House Martins Delichon urbicum were particularly numerous, and 98.7% of the birds seen in directed movement (n = 4122) were flying above the river. However, passing hirundines (mostly Barn Swallow Hirundo rustica and Sand Martins Riparia riparia) were scarce and did not show the same degree of association with the Guadiana. Our results suggest that there is no significant migratory corridor along the lower Guadiana during summer-autumn, but hirundines strongly associate with this river when foraging and when commuting between foraging grounds and roosts.SPEA, Lisboa2012-12-10T11:42:24Z2012-12-102009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/6753http://hdl.handle.net/10174/6753engCatry P, Campos A, Miravent V & Rabaça JE (2009) Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? Airo 19: 27-34.ICAAMndndndjrabaca@uevora.pt221Catry, PauloCampos, AnaMiravent, VandaRabaça, João E.info: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:RCAAP2024-01-03T18:46:26Zoai:dspace.uevora.pt:10174/6753Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:01:28.205482Repositório 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 |
Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? |
title |
Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? |
spellingShingle |
Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? Catry, Paulo migration leading lines Delichon Hirundo |
title_short |
Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? |
title_full |
Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? |
title_fullStr |
Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? |
title_full_unstemmed |
Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? |
title_sort |
Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? |
author |
Catry, Paulo |
author_facet |
Catry, Paulo Campos, Ana Miravent, Vanda Rabaça, João E. |
author_role |
author |
author2 |
Campos, Ana Miravent, Vanda Rabaça, João E. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Catry, Paulo Campos, Ana Miravent, Vanda Rabaça, João E. |
dc.subject.por.fl_str_mv |
migration leading lines Delichon Hirundo |
topic |
migration leading lines Delichon Hirundo |
description |
Little is known on the importance of water courses as migratory corridors. Here, we present the results of an investigation on the movements of diurnal migrants associated with the Guadiana River when crossing dry and inhospitable regions of southern Iberia. Direct observations were carried out along the river and at control sites away from it, in late August-November 2006. The number of birds seen was extremely small (<< 1 individual per hour for most species) and most records probably involved individuals in local movements, as indicated from similar rates of birds moving up and downriver. The only exceptions were hirundines which, within our study area, were strongly associated with the Guadiana both when foraging and when engaged in medium to long-distance daily movements. House Martins Delichon urbicum were particularly numerous, and 98.7% of the birds seen in directed movement (n = 4122) were flying above the river. However, passing hirundines (mostly Barn Swallow Hirundo rustica and Sand Martins Riparia riparia) were scarce and did not show the same degree of association with the Guadiana. Our results suggest that there is no significant migratory corridor along the lower Guadiana during summer-autumn, but hirundines strongly associate with this river when foraging and when commuting between foraging grounds and roosts. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01T00:00:00Z 2012-12-10T11:42:24Z 2012-12-10 |
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/10174/6753 http://hdl.handle.net/10174/6753 |
url |
http://hdl.handle.net/10174/6753 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Catry P, Campos A, Miravent V & Rabaça JE (2009) Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? Airo 19: 27-34. ICAAM nd nd nd jrabaca@uevora.pt 221 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
SPEA, Lisboa |
publisher.none.fl_str_mv |
SPEA, Lisboa |
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 |
|
_version_ |
1817553418722476032 |