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Documents disponibles écrits par cet auteur (13)
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Article
Zofia Wardynska, Auteur ; Holly Bennett, Auteur ; Xavier JM Mahele, Auteur ; Saskia IL Pearce, Auteur ; Ksenia Potapova, Auteur ; Sue Anne Zollinger, Auteur ; Julia Schroeder, AuteurCourtship displays provide important insight into sexual selection, evolution and the roles of communication signals in behavioural ecology. Any trait indicating individual quality must display phenotypic variation. Studying this variation can p[...]
Article
Claire Boothby, Auteur ; Chris Redfern, Auteur ; Julia Schroeder, AuteurThe best documented method to decrease predation of breeding seabirds by gulls are culling regimes; however, studies on the effectiveness of this method show ambiguous results. Here we tested an alternative method, using bamboo canes erected in [...]
Article
Liviu G. Pârâu, Auteur ; Sjouke A. Kingma, Auteur ; Simon E. Weigl, Auteur ; Hannah L. Dugdale, Auteur ; Catherine M. Lessells, Auteur ; Julia Schroeder, AuteurSleeping in the nest at the beginning of the breeding season is common for birds nesting in cavities. Here, we report evidence that European Bee-eaters Merops apiaster sleep in pairs in the nesting burrow. In 3.2% of the nest checks, we found tw[...]
Article
Valentijn Van Den Brink, Auteur ; Julia Schroeder, Auteur ; Christiaan Both, Auteur ; Pedro M. Lourenço, Auteur ; Jos C. E. W. Hooijmeijer, Auteur ; Theunis Piersma, AuteurCapsule Black-tailed Godwits first return to the nest location of the previous year, even when moving to a different nest location later that season. Aims To examine the use of space by Black-tailed Godwits during the two months before egg-layin[...]
Article
Maria Karlsson, Auteur ; Julia Schroeder, Auteur ; Shinichi Nakagawa, Auteur ; Henrik G. Smith, Auteur ; Terry Burke, Auteur ; Helena Westerdahl, AuteurThe MHC (Major Histocompatibility Complex) plays an important role in the immune system of vertebrates. MHC genes are extremely polymorphic and this variation is considered to be maintained by selection from pathogens. We investigate whether MHC[...]
Article
Julia Schroeder, Auteur ; Rosemarie Kentie, Auteur ; Marco Van Der Velde, Auteur ; Jos C. E. W. Hooijmeijer, Auteur ; Christiaan Both, Auteur ; Oliver Haddrath, Auteur ; Allan J. Baker, Auteur ; Theunis Piersma, AuteurWe show that variation in an intronic length polymorphism in the CHD1-Z gene in Black-tailed Godwits Limosa l. limosa is associated with fitness correlates. This is the second example of the CHDZ-1 gene being correlated with fitness, a previous [...]
Article
Julia Schroeder, Auteur ; Ian R. Cleasby, Auteur ; Shinichi Nakagawa, Auteur ; Nancy Ockendon, Auteur ; Terry Burke, AuteurPassive integrated transponders (PITs) are increasingly used to study behaviour in small passerines. However, to ensure the reliability of such studies, knowledge of long-term fitness consequences of equipping passerines with PITs is crucial. We[...]
Article
Pedro M. Lourenço, Auteur ; Rosemarie Kentie, Auteur ; Julia Schroeder, Auteur ; José A. Alves, Auteur ; Niko M. Groen, Auteur ; Jos C. E. W. Hooijmeijer, Auteur ; Theunis Piersma, AuteurBetween 2005/06 and 2008/09 we studied Black-tailed Godwits Limosa I. limosa staging in the rice fields surrounding the Tejo and Sado estuaries, Portugal. Godwits were counted weekly and flocks were scanned for colour-ringed individuals. We anal[...]
Article
Pedro M. Lourenço, Auteur ; Rosemarie Kentie, Auteur ; Julia Schroeder, Auteur ; Niko M. Groen, Auteur ; Jos C. E. W. Hooijmeijer, Auteur ; Theunis Piersma, AuteurWhen early breeding is advantageous, migrants underway to the breeding areas may be time stressed. The timing of sequential events such as migration and breeding is expected to be correlated because of a "domino effect", and would be of particul[...]
Article
Julia Schroeder, Auteur ; Theunis Piersma, Auteur ; Niko M. Groen, Auteur ; Jos C. E. W. Hooijmeijer, Auteur ; Rosemarie Kentie, Auteur ; Pedro M. Lourenço, Auteur ; Hans Schekkerman, Auteur ; Christiaan Both, AuteurAdvances in mowing schedules have led to early and rapid declines in the seasonal food availability for, and survival rates of, chicks of grassland-breeding waders. Concurrently, increased levels of soil fertilization may have improved food abun[...]
Article
Julia Schroeder, Auteur ; Pedro M. Lourenço, Auteur ; Marco Van Der Velde, Auteur ; Jos C. E. W. Hooijmeijer, Auteur ; Christiaan Both, Auteur ; Theunis Piersma, AuteurSystematic sex-related differences in size and plumage are informative of sex-specific selection pressures. Here, we present an analysis of sexual dimorphism in body size and plumage of Black-tailed Godwits Limosa limosa limosa from a breeding p[...]
Article
Julia Schroeder, Auteur ; Ian Cleasby, Auteur ; Hannah L. Dugdale, Auteur ; Shinichi Nakagawa, Auteur ; Terry Burke, AuteurProvisioning behavior in altricial birds is often used to measure parental investment and is assumed to have fitness consequences to the parents providing it, with the benefits outweighing the costs. Here we investigate the fitness costs and ben[...]
Article
Alfredo Sanchez-Tojar, Auteur ; Isabel Winney, Auteur ; Antje Girndt, Auteur ; Mirre J. P. Simons, Auteur ; Shinichi Nakagawa, Auteur ; Terry Burke, Auteur ; Julia Schroeder, AuteurFinding a high quality territory is essential for many animals to reproduce successfully. Despite its importance for fitness, we know little about the process of territory prospecting in wild birds, and whether individual traits and behaviours, [...]
