Advanced search
1 file | 3.36 MB Add to list

Weather- and human-related shifts in feeding conditions promote the use of built-up areas by an avian opportunist

Author
Organization
Abstract
Human activities benefit a range of animal species, the resulting presence of which in cities can have negative societal consequences. One example are food subsidies, which buffer natural variation in food availability and allow these species to maintain larger populations. These buffers will likely gain importance under future environmental change whereby natural food sources become decreasingly available. To inform on the current importance of different habitats for a bird reliant on human-made food subsidies (Lesser Black-backed Gull Larus fuscus), and its possible population response toward changes in climate and the availability of these subsidies, we characterized population-level short-term responses to variation in drivers of local food availability, both natural (weather related) and anthropogenic (fisheries activity). We expected foraging effort to vary in relation to local wind speed and soil moisture, as well as to the alternation of fisheries activity between weekdays and weekends. Individuals were predicted to adjust their foraging habitat use in response to these environmentally driven variations in effort. To this end, we analyzed GPS tracking data of 45 breeding individuals, between 2013 and 2018, nesting in the Port of Zeebrugge, Belgium. Effort was approximated as the energy expenditure rate per trip, the daily time spent away from the colony and the trip frequency, which were analyzed by means of linear mixed effects models. Habitat use per trip was compared between marine, agricultural fields and built-up areas (cities, industry and cattle farms), in a multinomial logistic model. Marine areas and agricultural fields were most frequently exploited, but all considered stressors (wind, dry conditions and inactivity of fisheries) resulted in a higher use of built-up areas. Stronger winds increased the energetic cost of foraging at sea, and thus diminished the use of marine areas, as also did the inactivity of fisheries in weekends. Dry conditions diminished the use of fields and decreased trip frequency. Built-up areas thus constitute a buffer for the variation in food availability at sea and in agricultural fields. The expected increase in frequency and severity of extreme weather events (storms and drought) under global change, combined with the disappearance of discards, may therefore result in a longterm increase in the use of urban habitats by opportunistic large Gull species.
Keywords
BLACK-BACKED GULLS, FREE-LIVING ANIMALS, LARUS-FUSCUS, CLIMATE-CHANGE, HERRING GULL, BEHAVIORAL-RESPONSES, METABOLIC-RATE, WILDLIFE, DIET, ARGENTATUS, Anthropogenic, Gull, Habitat use, Soil moisture, Urban, Weather, Wind, speed

Downloads

  • (...).pdf
    • full text (Published version)
    • |
    • UGent only
    • |
    • PDF
    • |
    • 3.36 MB

Citation

Please use this url to cite or link to this publication:

MLA
Sotillo, Alejandro, et al. “Weather- and Human-Related Shifts in Feeding Conditions Promote the Use of Built-up Areas by an Avian Opportunist.” LANDSCAPE AND URBAN PLANNING, vol. 217, 2022, doi:10.1016/j.landurbplan.2021.104268.
APA
Sotillo, A., Baert, J., Mueller, W., Stienen, E. W. M., Shamoun-Baranes, J., Soares, A. M. V. M., & Lens, L. (2022). Weather- and human-related shifts in feeding conditions promote the use of built-up areas by an avian opportunist. LANDSCAPE AND URBAN PLANNING, 217. https://doi.org/10.1016/j.landurbplan.2021.104268
Chicago author-date
Sotillo, Alejandro, Jan Baert, Wendt Mueller, Eric W. M. Stienen, Judy Shamoun-Baranes, Amadeu M. V. M. Soares, and Luc Lens. 2022. “Weather- and Human-Related Shifts in Feeding Conditions Promote the Use of Built-up Areas by an Avian Opportunist.” LANDSCAPE AND URBAN PLANNING 217. https://doi.org/10.1016/j.landurbplan.2021.104268.
Chicago author-date (all authors)
Sotillo, Alejandro, Jan Baert, Wendt Mueller, Eric W. M. Stienen, Judy Shamoun-Baranes, Amadeu M. V. M. Soares, and Luc Lens. 2022. “Weather- and Human-Related Shifts in Feeding Conditions Promote the Use of Built-up Areas by an Avian Opportunist.” LANDSCAPE AND URBAN PLANNING 217. doi:10.1016/j.landurbplan.2021.104268.
Vancouver
1.
Sotillo A, Baert J, Mueller W, Stienen EWM, Shamoun-Baranes J, Soares AMVM, et al. Weather- and human-related shifts in feeding conditions promote the use of built-up areas by an avian opportunist. LANDSCAPE AND URBAN PLANNING. 2022;217.
IEEE
[1]
A. Sotillo et al., “Weather- and human-related shifts in feeding conditions promote the use of built-up areas by an avian opportunist,” LANDSCAPE AND URBAN PLANNING, vol. 217, 2022.
@article{8750718,
  abstract     = {{Human activities benefit a range of animal species, the resulting presence of which in cities can have negative societal consequences. One example are food subsidies, which buffer natural variation in food availability and allow these species to maintain larger populations. These buffers will likely gain importance under future environmental change whereby natural food sources become decreasingly available. To inform on the current importance of different habitats for a bird reliant on human-made food subsidies (Lesser Black-backed Gull Larus fuscus), and its possible population response toward changes in climate and the availability of these subsidies, we characterized population-level short-term responses to variation in drivers of local food availability, both natural (weather related) and anthropogenic (fisheries activity). We expected foraging effort to vary in relation to local wind speed and soil moisture, as well as to the alternation of fisheries activity between weekdays and weekends. Individuals were predicted to adjust their foraging habitat use in response to these environmentally driven variations in effort. To this end, we analyzed GPS tracking data of 45 breeding individuals, between 2013 and 2018, nesting in the Port of Zeebrugge, Belgium. Effort was approximated as the energy expenditure rate per trip, the daily time spent away from the colony and the trip frequency, which were analyzed by means of linear mixed effects models. Habitat use per trip was compared between marine, agricultural fields and built-up areas (cities, industry and cattle farms), in a multinomial logistic model. Marine areas and agricultural fields were most frequently exploited, but all considered stressors (wind, dry conditions and inactivity of fisheries) resulted in a higher use of built-up areas. Stronger winds increased the energetic cost of foraging at sea, and thus diminished the use of marine areas, as also did the inactivity of fisheries in weekends. Dry conditions diminished the use of fields and decreased trip frequency. Built-up areas thus constitute a buffer for the variation in food availability at sea and in agricultural fields. The expected increase in frequency and severity of extreme weather events (storms and drought) under global change, combined with the disappearance of discards, may therefore result in a longterm increase in the use of urban habitats by opportunistic large Gull species.}},
  articleno    = {{104268}},
  author       = {{Sotillo, Alejandro and Baert, Jan and Mueller, Wendt and Stienen, Eric W. M. and Shamoun-Baranes, Judy and Soares, Amadeu M. V. M. and Lens, Luc}},
  issn         = {{0169-2046}},
  journal      = {{LANDSCAPE AND URBAN PLANNING}},
  keywords     = {{BLACK-BACKED GULLS,FREE-LIVING ANIMALS,LARUS-FUSCUS,CLIMATE-CHANGE,HERRING GULL,BEHAVIORAL-RESPONSES,METABOLIC-RATE,WILDLIFE,DIET,ARGENTATUS,Anthropogenic,Gull,Habitat use,Soil moisture,Urban,Weather,Wind,speed}},
  language     = {{eng}},
  pages        = {{13}},
  title        = {{Weather- and human-related shifts in feeding conditions promote the use of built-up areas by an avian opportunist}},
  url          = {{http://dx.doi.org/10.1016/j.landurbplan.2021.104268}},
  volume       = {{217}},
  year         = {{2022}},
}

Altmetric
View in Altmetric
Web of Science
Times cited: