Do roads alter the trophic behavior of the mesocarnivore community living close to them?

Roads have impacts on the fauna arising from habitat fragmentation, roadkill and the barrier effect. Furthermore, roads lead species to change their activity with repercussions on predator–prey interactions and trigger indirect effects that are currently unknown. This study analyzes the effect of a motorway on the trophic behavior of the terrestrial carnivore community of its surroundings. Monthly scat sampling was conducted over a year at three distances from a motorway (0–50 m, 500–550 m and 1000–1050 m). We collected 498 scats, these originating from red fox (39.16%), cat (24.50%), stone marten (24.09%) and badger (12.25%). The relative abundance of the trophic resources in them was estimated together with the trophic diversity and niche overlap of the carnivore species. The results showed a distinct effect of distance from the road on trophic behavior of carnivores, as well as differences between species and seasons. The scats nearest the road had 10–20% more biomass of small mammals, equivalent in relative terms to a 21–48% increase in small mammals’ biomass when compared with scats collected further from the road. This finding indicates changes in predator–prey interactions near the road and shows that the human-generated structural and functional changes to ecosystems spread throughout trophic networks.

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Ruiz-Capillas P. Mata C. Fernández B. Fernandes C. y Malo J.E. Do roads alter the trophic behavior of the mesocarnivore community living close to them?. MDPI, 2021. https://doi.org/10.3390/d13040173

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Tipo de recurso Texto
Fecha de creación 02-12-2024
Fecha de última modificación 21-01-2025
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Identificador de los metadatos 9dfdc7b2-6926-58e9-a529-1431448cdd4c
Idioma de los metadatos Español
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Categoría temática ISO 19115 biota
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Nombre del autor Ruiz-Capillas, P., Mata, C., Fernández, B., Fernandes, C. y Malo, J.E.
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Identificador alternativo DOI: 10.3390/d13040173
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