ArticleMovement ecology2019
Foraging for high caloric anthropogenic prey is energetically costly.
Article in Movement ecology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 31 citations in OpenAlex.
- Partial Niche Partitioning in Three Sympatric Gull Species Through Foraging Areas and Habitat Selection.Ecology and evolution · 2025Article
- Movement ecology of an endangered mesopredator in a mining landscape.Movement ecology · 2024Article
- GPS tracking reveals landfill closures induce higher foraging effort and habitat switching in gulls.Movement ecology · 2021Article
- Foraging movements of breeding Kelp Gulls in South Africa.Movement ecology · 2020Article
- Time and energy costs of different foraging choices in an avian generalist species.Movement ecology · 2019Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSeveral generalist species benefit from food provided by human activities. Food from anthropogenic sources is often high in caloric value and can positively influence reproductive success or survival. However, this type of resource may require specific foraging skills and habitat experience with related costs and benefits. As a result, not all individuals utilize these resources equally, with some individuals preferentially foraging in habitats where natural resources of lower energy content are predominant, possibly due to lower energy expenditure of the specific foraging strategy.
methodsHere we investigate whether foraging in habitats which contain high caloric resources of anthropogenic origin is energetically costlier than foraging in habitats with low caloric resources such as intertidal areas or agricultural and natural areas, for example due to increased flight costs, in a generalist seabird, the herring gull
resultsWe show that the rate of energy expenditure is on average 34% higher when individuals forage for high caloric prey in marine and urban areas compared to foraging for low caloric prey in intertidal and agricultural areas. Energetic estimates suggest that if birds would feed completely on these resources, they have to gather ~ 400 kJ per day more to compensate for the higher foraging costs.
conclusionsEnergy expenditure differs among foraging habitat and may thereby influence foraging decisions of individual herring gulls. As management of anthropogenic resources changes, so too may the costs and potential benefits of foraging strategies which are strongly tied to human activities.
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