Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/25597
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dc.contributor.authorRamos, J. A.-
dc.contributor.authorPedro, Patricia-
dc.contributor.authorMatos, Antonio-
dc.contributor.authorPaiva, Vitor H.-
dc.date.accessioned2014-04-24T16:34:32Z-
dc.date.available2014-04-24T16:34:32Z-
dc.date.issued2013-
dc.identifier.urihttp://hdl.handle.net/10316/25597-
dc.description.abstractWe used 10 years of data on clutch size, egg size and diet, and 8 years of data on timing of laying on Little Terns (Sternula albifrons) breeding in Ria Formosa lagoon system, Algarve, Portugal to assess whether diet acts as an important intermediary between climatic conditions and breeding parameters. We used Generalized Linear Models to relate (1) the relative occurrence and size of the main prey species, sand smelts (Atherina spp.), with environmental variables, a large-scale climate variable, the North Atlantic Oscillation (NAO) index, and a local scale variable, the sea-surface temperature (SST), and (2) the respective effects of sand smelts relative occurrence, NAO index and SST on Little Tern breeding parameters. The diet of Little Terns was dominated by sand smelts, with a frequency occurrence of over 60% in all years. The winter SST (February) was negatively associated with the relative occurrence of sand smelts in the diet of Little Terns during the breeding season which, in turn, was positively associated with Little Tern clutch size. Our results suggest that negative NAO conditions in the Atlantic Ocean, often associated with rougher sea conditions (greater vertical mixing, stronger winds and lower SST) were related with earlier breeding, and lower SST in the surroundings of the colony during winterespring favour the abundance of prey fish for Little Terns as well as their reproductive parameters. Climate patterns at both large and local scales are likely to change in the future, which may have important implications for estuarine seabirds in Southern Europe.por
dc.description.sponsorshipWe used 10 years of data on clutch size, egg size and diet, and 8 years of data on timing of laying on Little Terns (Sternula albifrons) breeding in Ria Formosa lagoon system, Algarve, Portugal to assess whether diet acts as an important intermediary between climatic conditions and breeding parameters. We used Generalized Linear Models to relate (1) the relative occurrence and size of the main prey species, sand smelts (Atherina spp.), with environmental variables, a large-scale climate variable, the North Atlantic Oscillation (NAO) index, and a local scale variable, the sea-surface temperature (SST), and (2) the respective effects of sand smelts relative occurrence, NAO index and SST on Little Tern breeding parameters. The diet of Little Terns was dominated by sand smelts, with a frequency occurrence of over 60% in all years. The winter SST (February) was negatively associated with the relative occurrence of sand smelts in the diet of Little Terns during the breeding season which, in turn, was positively associated with Little Tern clutch size. Our results suggest that negative NAO conditions in the Atlantic Ocean, often associated with rougher sea conditions (greater vertical mixing, stronger winds and lower SST) were related with earlier breeding, and lower SST in the surroundings of the colony during winterespring favour the abundance of prey fish for Little Terns as well as their reproductive parameters. Climate patterns at both large and local scales are likely to change in the future, which may have important implications for estuarine seabirds in Southern Europe. We acknowledge the support given by Fundação para a Ciência e Tecnologia, Portugal, to Patricia Pedro (SFRH/BD/40095/2007). We are also grateful to Parque Natural da Ria Formosa for logistical support.por
dc.language.isoengpor
dc.publisherElsevier Masson SAS.por
dc.rightsopenAccesspor
dc.subjectLittle Ternpor
dc.subjectAtherina spp.por
dc.subjectNAOpor
dc.subjectSea-surface temperaturepor
dc.subjectEstuarine seabirdspor
dc.subjectBreeding parameterspor
dc.titleRelation between climatic factors, diet and reproductive parameters of Little Terns over a decadepor
dc.typearticlepor
degois.publication.firstPage56por
degois.publication.lastPage62por
degois.publication.titleActa Oecologicapor
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S1146609X13001410#por
dc.peerreviewedYespor
dc.identifier.doi10.1016/j.actao.2013.09.001-
degois.publication.volume53por
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
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