ArticlePloS one2011
Spatial heterogeneity in resource distribution promotes facultative sociality in two trans-Saharan migratory birds.
Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Sharing sleeping sites disrupts sleep but catalyses social tolerance and coordination between groups.Proceedings. Biological sciences · 2024Article
- Early life movements and mortality of Egyptian vultures: Implications for transcontinental conservation.Ecology and evolution · 2024Article
- Clinically relevant antibiotic resistance inmSphere · 2023Article
- Resource predictability modulates spatial-use networks in an endangered scavenger species.Movement ecology · 2023Article
- Black Kites on a flyway between Western Siberia and the Indian Subcontinent.Scientific reports · 2022Article
- Early life adversity has long-term effects on sociality and interaction style in female baboons.Proceedings. Biological sciences · 2022Article
- Sex- and age-dependent patterns of survival and breeding success in a long-lived endangered avian scavenger.Scientific reports · 2017Article
- Scavengers on the move: behavioural changes in foraging search patterns during the annual cycle.PloS one · 2013Article
- Spatial and temporal predictions of moose winter distribution.Oecologia · 2012Article
- Misleading population estimates: biases and consistency of visual surveys and matrix modelling in the endangered bearded vulture.PloS one · 2011Article
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7 authors.
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Abstract
backgroundMigrant populations must cope not only with environmental changes in different biomes, but also with the continuous constraints imposed by human-induced changes through landscape transformation and resource patchiness. Theoretical studies suggest that changes in food distribution can promote changes in the social arrangement of individuals without apparent adaptive value. Empirical research on this subject has only been performed at reduced geographical scales and/or for single species. However, the relative contribution of food patchiness and predictability, both in space and time, to abundance and sociality can vary among species, depending on their degree of flexibility. METHODOLOGY/PRINCIPAL
findingsBy means of constrained zero-inflated Generalized Additive Models we analysed the spatial distribution of two trans-Saharan avian scavengers that breed (Europe) and winter (Africa) sympatrically, in relation to food availability. In the summering grounds, the probability of finding large numbers of both species increases close to predictable feeding sources, whereas in the wintering grounds, where food resources are widespread, we did not find such aggregation patterns, except for the black kite, which aggregated at desert locust outbreaks. The comparison of diets in both species through stable isotopes revealed that their diets overlapped during summering, but not during wintering. CONCLUSIONS/SIGNIFICANCE: Our results suggest that bird sociality at feeding grounds is closely linked to the pattern of spatial distribution and predictability of trophic resources, which are ultimately induced by human activities. Migrant species can show adaptive foraging strategies to face changing distribution of food availability in both wintering and summering quarters. Understanding these effects is a key aspect for predicting the fitness costs and population consequences of habitat transformations on the viability of endangered migratory species.
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