Détail de l'auteur
Auteur John G. Ewen |
Documents disponibles écrits par cet auteur (10)
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Article
Donal Smith, Auteur ; Thomas Abeli, Auteur ; Emily Beckman Bruns, Auteur ; Sarah E. Dalrymple, Auteur ; Jeremy Foster, Auteur ; Tania C. Gilbert, Auteur ; Carolyn J. Hogg, Auteur ; Natasha A. Lloyd, Auteur ; Abby Meyer, Auteur ; Axel Moehrenschlager, Auteur ; Olivia Murrell, Auteur ; Jon Paul Rodríguez, Auteur ; Paul P. Smith, Auteur ; Andrew Terry, Auteur ; John G. Ewen, AuteurExtinct in the Wild (EW) species are placed at the highest risk of extinction under the International Union for Conservation of Nature Red List, but the extent and variation in this risk have never been evaluated. Harnessing global databases of [...]![]()
Article
Gemma Taylor, Auteur ; John G. Ewen, Auteur ; Rohan H. Clarke, Auteur ; Tim M. Blackburn, Auteur ; Glen Johnson, Auteur ; Dean Ingwersen, AuteurNest predation is a primary cause of nest failure in open-cup nesting woodland birds and low reproductive success is a common reason why reintroduced species fail to establish in the wild. We used video monitoring to record the breeding outcomes[...]![]()
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Tammy E. Davies, Auteur ; Rohan H. Clarke, Auteur ; John G. Ewen, Auteur ; Ioan R. A. Fazey, Auteur ; Nathalie Pettorelli, Auteur ; Will Cresswell, AuteurUnprecedented rates of deforestation on tropical islands are threatening high numbers of endemic species, and empirical evidence is needed to better understand the implications of changes in land-use on biodiversity and to guide conservation act[...]![]()
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Phillip Cassey, Auteur ; John G. Ewen, Auteur ; N. Justin Marshall, Auteur ; Misha Vorobyev, Auteur ; Tim M. Blackburn, Auteur ; Mark E. Hauber, AuteurDiversity in the colour and appearance of avian eggshells has been proposed to serve a variety of visual functions, including crypsis from predation, mimicry and discrimination in facultative and obligate brood parasitism, and sexually selected [...]![]()
Article
Phillip Cassey, Auteur ; Ivan Mikšík, Auteur ; Steven J. Portugal, Auteur ; Golo Maurer, Auteur ; John G. Ewen, Auteur ; Erica Zarate, Auteur ; Mary A. Sewell, Auteur ; Filiz Karadas, Auteur ; Tomáš Grim, Auteur ; Mark E. Hauber, AuteurThe colourful appearance of avian eggshells is a prominent aspect of maternal reproductive effort in birds. Some differences in eggshell coloration have been reported to co-vary with various measures of maternal condition and these patterns supp[...]![]()
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John G. Ewen, Auteur ; Rose Thorogood, Auteur ; Doug P. Armstrong, AuteurP>1. Male-biased adult sex ratios are frequently observed in free-ranging populations and are known to cause changes in mating behaviours including increased male harassment of females, which can cause injury to females and/or alter female behav[...]![]()
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Phillip Cassey, Auteur ; John G. Ewen, Auteur ; Rebecca L. Boulton, Auteur ; Filiz Karadas, Auteur ; Anders P. Moller, Auteur ; Tim M. Blackburn, AuteurMaternally deposited carotenoids are a prominent component of egg yolk and are vital for the development and growth of the embryo. In most studies of avian yolk carotenoids, eggs are destructively sampled and this may limit both the number of cl[...]![]()
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David L. P. Correia, Auteur ; Alienor L. M. Chauvenet, Auteur ; J. Marcus Rowcliffe, Auteur ; John G. Ewen, AuteurIn order to buffer the risks climate change poses to biodiversity, managers need to develop new strategies to cope with an increasingly dynamic environment. Supplementary feeding (SF) is a commonly-used form of conservation management that may h[...]



