<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Bourgault, Patrice</style></author><author><style face="normal" font="default" size="100%">Perret, Philippe</style></author><author><style face="normal" font="default" size="100%">Lambrechts, Marcel M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Food supplementation in distinct Corsican oak habitats and the timing of egg laying by Blue Tits</style></title><secondary-title><style face="normal" font="default" size="100%">JOURNAL OF FIELD ORNITHOLOGY</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Blue tit</style></keyword><keyword><style  face="normal" font="default" size="100%">food constraints</style></keyword><keyword><style  face="normal" font="default" size="100%">food supplementation</style></keyword><keyword><style  face="normal" font="default" size="100%">proximate factors</style></keyword><keyword><style  face="normal" font="default" size="100%">timing of breeding</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2009///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">80</style></volume><pages><style face="normal" font="default" size="100%">127 - 134</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Resource constraints may impose physiological limitations on egg production and influence the timing of breeding in seasonally breeding birds. Food-supplementation experiments have demonstrated that food availability may influence the timing of egg laying, but the moderate response of birds in most studies suggests that the effect of food availability may be apparent only under certain ecological conditions. Experiments conducted in habitats that differ in ecological characteristics and natural availability of food sources are, therefore, needed to effectively examine the possible role of habitat-specific physiological constraints on the timing of breeding. We compared the response of Blue Tits (Cyanistes caeruleus) to supplemental feeding in four oak woodlands that differed in elevation, forest type, and food availability on the island of Corsica. We found that supplemental feeding advanced the date of egg laying (by about 1 week) at only one of four sites; a site dominated by evergreen holm oak where the availability of natural food was likely lower than at the other sites. Our results suggest that the response of Blue Tits to supplemental food depends on the natural level of resource abundance, but, in addition, that the effect of supplemental feeding on the timing of breeding appears to be small compared to the typical and, for our study sites, great (&gt; 1.5 mo) between-population variation in clutch initiation dates. Physiological limitations related to the acquisition of nutrients and energy may exert only a limited effect on the onset of breeding, and behavioral flexibility in the integration of fine-scale environmental signals (e.g., temperature and phenology) that predict future breeding conditions may be more important in explaining variation among populations in the timing of breeding.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;pub-location: COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA&lt;br/&gt;publisher: WILEY-BLACKWELL PUBLISHING, INC</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Blondel, Jacques</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">On humans and wildlife in Mediterranean islands</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Biogeography</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Blue tit</style></keyword><keyword><style  face="normal" font="default" size="100%">gene flow</style></keyword><keyword><style  face="normal" font="default" size="100%">habitat gradient</style></keyword><keyword><style  face="normal" font="default" size="100%">Human disturbance</style></keyword><keyword><style  face="normal" font="default" size="100%">insular syndrome</style></keyword><keyword><style  face="normal" font="default" size="100%">landscape changes</style></keyword><keyword><style  face="normal" font="default" size="100%">local differentiation</style></keyword><keyword><style  face="normal" font="default" size="100%">mass extinction</style></keyword><keyword><style  face="normal" font="default" size="100%">niche breadth</style></keyword><keyword><style  face="normal" font="default" size="100%">phenotypic variation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2008///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1111/j.1365-2699.2007.01819.x</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">35</style></volume><pages><style face="normal" font="default" size="100%">509 - 518</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Aim To investigate the effects of human-induced landscape changes in Mediterranean islands on the ecological and evolutionary responses of bird communities and populations. The combination of mass extinction of large mammals and massive deforestation by humans was hypothesized to produce new selection regimes to which organisms were likely to respond. Habitat selection and niche breadth have been investigated at the scale of species, and phenotypic variation at the scale of local populations. Location The study was carried out along habitat gradients and in habitat mosaics at different spatial scales on the island of Corsica and in areas of similar size and structure in continental France. Methods Two sets of gradients have been used for investigating habitat selection and niche breadth: gradients of altitude, and gradients of vegetation structure. Population studies focused on the blue tit, Cyanistes caeruleus. Large samples of breeding attempts by this species in 10 habitats provided detailed data on phenotypic variation of fitness-related traits both on Corsica and on the mainland. Results The extent of niche space used by birds differed substantially depending on which habitat gradient was considered. Many species have been found to contract their habitat niche along the elevation gradient on Corsica compared with the mainland, whereas all species in the vegetation gradient broadened their niche on the island. Breeding patterns of the blue tit differed considerably depending on whether they settle in deciduous oaks (Quercus humilis) or in evergreen sclerophyllous oaks (Quercus ilex). Phenotypic variation of breeding traits was much higher on the island, where more populations were correctly timed for the best breeding period than on the mainland, a pattern that is likely to result from lower dispersal of organisms on the island. Main conclusions The differences in observed niche breadth between the two series of habitat gradients is explained both by the species-specific ecology of the species and the human-induced environmental history of Corsica. Large-scale landscape changes provided new opportunities for island colonization by non-forest species, which are isolated as small, ‘fugitive’ local populations. In both gradients, forest species that are typical components of the Corsican bird fauna definitely expanded their niche and occupied a wider range of habitats on Corsica than on the mainland. At the population scale, landscapes included habitat patches with contrasted selection regimes, which resulted in high phenotypic variation for many fitness-related traits. Reduced dispersal of birds on the island resulted in a much higher degree of local differentiation on Corsica than on the mainland.</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;publisher: Blackwell Publishing Ltd</style></notes></record></records></xml>