Evidence map›Paper›PMID 40946202›Full record

ArticleEcology letters2025

Urbanisation Facilitates Intrapopulation Dietary Niche Diversity in a Generalist Carnivore.

Tal Caspi, Emily Sit, Monica G Serrano, Stevi L Vanderzwan, Katie A Smith, William Merkle, Deb Campbell, Benjamin N Sacks

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Ecology letters, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
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  5. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Tal CaspiDepartment of Environmental Science & Policy, University of California, Davis, Davis, California, USA.ORCID https://orcid.org/0000-0003-1021-4937
Emily SitMammalian Ecology and Conservation Unit, Veterinary Genetics Laboratory, University of California, Davis, Davis, California, USA.
Monica G SerranoMammalian Ecology and Conservation Unit, Veterinary Genetics Laboratory, University of California, Davis, Davis, California, USA.ORCID https://orcid.org/0009-0005-5426-556X
Stevi L VanderzwanMammalian Ecology and Conservation Unit, Veterinary Genetics Laboratory, University of California, Davis, Davis, California, USA.ORCID https://orcid.org/0000-0002-7400-6961
Katie A SmithGolden Gate National Recreation Area, San Francisco, California, USA.
William MerkleGolden Gate National Recreation Area, San Francisco, California, USA.ORCID https://orcid.org/0009-0006-1843-057X
Deb CampbellSan Francisco Animal Care and Control, San Francisco, California, USA.
Benjamin N SacksMammalian Ecology and Conservation Unit, Veterinary Genetics Laboratory, University of California, Davis, Davis, California, USA.ORCID https://orcid.org/0000-0003-0143-6589

Funding

American Society of MammalogistsAnimal Behavior SocietyAnimal Welfare InstituteCollege of Agricultural and Environmental Sciences, University of California, DavisGraduate Studies, University of California, DavisMammalian Ecology and Conservation Unit of the Veterinary Genetics Laboratory at the University of California, Davis
6 · The paper itself

Abstract

The niche variation hypothesis predicts that members of generalist species are specialists, and that the degree of individual specialisation correlates positively with resource diversity. Urban landscapes are highly heterogeneous in resource distribution; therefore, we predicted urbanisation would be associated with narrower individual dietary niches and greater differentiation among individuals of generalist species. We used stable isotope analysis to compare diets of urban and nonurban coyote (Canis latrans) populations in San Francisco and Marin County, California, USA. Urban coyotes had dietary niches nearly three times narrower than nonurban coyotes and greater among-individual variation in isotope values. Within-individual differences explained 18% of total δ

Indexed as

CoyotesDietEcosystemUrbanizationAnimalsCaliforniaCarbon IsotopesNitrogen IsotopesSan FranciscoCarbon IsotopesNitrogen Isotopesanthropogenic subsidiescoyotediet specialisationindividual variationniche widthstable isotope analysisurban ecology

Identifiers

PMID40946202
PMCPMC12433587

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.