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- W2006666908 abstract "Habitat selection is a hierarchical process where the distribution of individuals is constrained by environmental factors acting from the landscape scale to specific microhabitats such as breeding sites. However, interactions between conspecifics might greatly influence bird distribution and habitat use, especially in lekking birds. In the lekking Houbara bustard Chlamydotis undulata undulata, we investigated the respective role of environmental and social constraints on the distribution of nests and display sites. We measured environmental variables around 69 nests and 70 display sites at different spatial scales: the landscape, the breeding range, and the display and nest site scale. The variables were compared to those measured at 50 random plots to determine whether environmental features are actively selected. Social variables were included by studying spatial relationships between displaying male density, nests and female movements throughout the year. At the landscape scale, human presence acted as a limiting factor for the establishment of nest and display sites. At the breeding range scale, habitat requirements differed between sexes. Breeding females used a heterogeneous complex of habitats provided by the network of wadis (water courses) crossing the reg (gravel plain) covered by tall perennial plants. In contrast, display males looked for conspicuousness and courtship ability by selecting the reg with short perennials, and used temporarily flooded areas for feeding. Males aggregated on traditional display site where they experienced the greatest female density. This result supported the hotspot model in the evolution of leks in the Houbara bustard. It underlies an overriding effect of female attraction on male settlement in the individual habitat selection process." @default.
- W2006666908 created "2016-06-24" @default.
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- W2006666908 date "2008-07-01" @default.
- W2006666908 modified "2023-10-10" @default.
- W2006666908 title "Environmental and social constraints on breeding site selection. Does the exploded-lek and hotspot model apply to the Houbara bustard<i>Chlamydotis undulata undulata</i>?" @default.
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- W2006666908 doi "https://doi.org/10.1111/j.0908-8857.2008.03994.x" @default.
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