ArticleScientific reports2016
Human expansion precipitates niche expansion for an opportunistic apex predator (Puma concolor).
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 61 citations in OpenAlex.
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- Human disturbance increases trophic niche overlap in terrestrial carnivore communities.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
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- Subsidies from anthropogenic resources alter diet, activity, and ranging behavior of an apex predator (Canis lupus).Scientific reports · 2019Article
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- Time-varying predatory behavior is primary predictor of fine-scale movement of wildland-urban cougars.Movement ecology · 2018Article
- Spatially varying density dependence drives a shifting mosaic of survival in a recovering apex predator (Ecology and evolution · 2017Article
Corrections and comments
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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
There is growing recognition that developed landscapes are important systems in which to promote ecological complexity and conservation. Yet, little is known about processes regulating these novel ecosystems, or behaviours employed by species adapting to them. We evaluated the isotopic niche of an apex carnivore, the cougar (Puma concolor), over broad spatiotemporal scales and in a region characterized by rapid landscape change. We detected a shift in resource use, from near complete specialization on native herbivores in wildlands to greater use of exotic and invasive species by cougars in contemporary urban interfaces. We show that 25 years ago, cougars inhabiting these same urban interfaces possessed diets that were intermediate. Thus, niche expansion followed human expansion over both time and space, indicating that an important top predator is interacting with prey in novel ways. Thus, though human-dominated landscapes can provide sufficient resources for apex carnivores, they do not necessarily preserve their ecological relationships.
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