Journal ArticleDOI
The importance of social information in breeding site selection increases with population size in the Eurasian Griffon Vulture Gyps fulvus
TLDR
The authors' results indicated a prevalent use of non-social information during the early stages of the colonization and an increasing role of social information as the expansion progressed, with breeding density of conspecifics increased its importance over time, having the greatest relative weight in habitat selection later in the colonization process.Abstract:
Animals can select breeding sites using non-social information (habitat characteristics) and social information (conspecific presence or abundance). The availability of both types of information is expected to vary over time during the colonization of a new area, conditioning their use by colonizers. However, if and how both types of information are exploited during the colonization process remains unclear. We hypothesized that nonsocial information should be predominant at the beginning of a colonization episode (when conspecific presence is low) and that social information should gain in importance as the colonization progresses. We tested this hypothesis by studying habitat selection by the Griffon Vulture Gyps fulvus, a long-lived colonial raptor, during a natural colonization process spanning 40 years. In NW Spain, the population showed a sharp increase from 15 breeding pairs in three colonies in the 1970s to 586 breeding pairs in 120 colonies in 2008, expanding its range from 90 km 2 in the 1970s to 6403 km 2 in 2008, with directions of expansion following areas rich in nesting cliffs. The main determinants of habitat selection varied over time. Livestock density and the characteristics of nesting cliffs were the main predictors of settlement at the onset of colonization. Breeding density of conspecifics increased its importance over time, having the greatest relative weight in habitat selection later in the colonization process. Our results indicated a prevalent use of non-social information during the early stages of the colonization and an increasing role of social information as the expansion progressed.read more
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Nested species- rich networks of scavenging vertebrates support high levels of interspecific competition.
Esther Sebastián-González,Marcos Moleón,Marcos Moleón,Jean P. Gibert,Francisco Botella,Patricia Mateo-Tomás,Pedro P. Olea,Pedro P. Olea,Paulo R. Guimarães,JoséAntonio Sánchez-Zapata +9 more
TL;DR: Seven assemblages of scavengers feeding on ungulate carcasses in mainland Spain were studied to investigate if community composition, species richness and structure (nestedness) affect species coexistence at carcasses, and nested networks showed a nested pattern in sites where highly efficient, obligate scavengers were present.
Journal ArticleDOI
Assessing species habitat using Google Street View: a case study of cliff-nesting vultures.
TL;DR: This World Wide Web-based methodology may be a useful, complementary tool to remotely map and assess the potential habitat of cliff-dependent biodiversity over large geographic areas, saving survey-related costs.
Journal ArticleDOI
Recovery potential of a western lowland gorilla population following a major Ebola outbreak: results from a ten year study.
Céline Genton,Romane H. Cristescu,Sylvain Gatti,Florence Levréro,Elodie Bigot,Damien Caillaud,Jean-Sébastien Pierre,Nelly Ménard +7 more
TL;DR: The gorilla population visiting Lokoué forest clearing, Odzala-Kokoua National Park, Republic of the Congo, has been monitored before, two years after and six years after Ebola affected it in 2004, allowing us to describe Ebola's short-term and long-term impacts on the structure of the population.
Journal ArticleDOI
Foraging movements of Eurasian griffon vultures (Gyps fulvus): implications for supplementary feeding management
Iñigo Zuberogoitia,José Antonio González-Oreja,José Enrique Martínez,Jabi Zabala,Imanol Gómez,Pascual López-López +5 more
TL;DR: In this paper, the authors developed a study to analyse the foraging movements of Eurasian griffon vultures (Gyps fulvus) in northern Spain and found that birds randomly moved long distances whilst searching for food, or if vulture re-sightings were restricted to a few feeding sites within a limited area.
Journal ArticleDOI
Patterns of nest reuse in forest raptors and their effects on reproductive output
TL;DR: An interesting view on how forest raptors use old nests as important resources is provided, probably taking them as location cues for nesting site selection and suggesting that unused nest sites should be left undisturbed since they could attract breeding raptor pairs in future years.
References
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Book
Model Selection and Multimodel Inference: A Practical Information-Theoretic Approach
TL;DR: The second edition of this book is unique in that it focuses on methods for making formal statistical inference from all the models in an a priori set (Multi-Model Inference).
Journal ArticleDOI
Statistical significance for genomewide studies
John D. Storey,Robert Tibshirani +1 more
TL;DR: This work proposes an approach to measuring statistical significance in genomewide studies based on the concept of the false discovery rate, which offers a sensible balance between the number of true and false positives that is automatically calibrated and easily interpreted.
Journal ArticleDOI
Birds of the Western Palearctic
TL;DR: Handbook of the Birds of Europe, the Middle East and North Africa: The Birds of the Western Palearctic as discussed by the authors, Vol. 1: Ostrich to Ducks.