How does anthropogenic food influence the trophic ecology of Rocky Mountain Red Fox?

Providing novel food subsidies to wildlife can influence behavior, resource use, disease dynamics, and food web interactions. Studies examining impacts of anthropogenic food have primarily occurred in urban landscapes where anthropogenic resources are consistently accessible. National parks, however, experience similar issues regarding wildlife exploiting anthropogenic food, but access to anthropogenic food is contingent on human visitation, which can fluctuate dramatically between seasons. We evaluated how fluctuating availability of anthropogenic food and demographic factors influenced the isotopic niche of Rocky Mountain Red Fox (Vulpes vulpes macroura) at the population and individual level in Grand Teton National Park, Wyoming. From 2016 – 2021, we collected 55 whisker samples and 52 hair samples from 40 unique individuals and analyzed them using stable isotope analysis (δ13C and δ15N) for diet exploration. We discovered that Rocky Mountain red foxes have a broad isotopic niche, wi..., , , ## How does anthropogenic food influence the trophic ecology of Rocky Mountain Red Fox?

[https://doi.org/10.5061/dryad.n02v6wx5z](https://doi.org/10.5061/dryad.n02v6wx5z)

## Description of the data and file structure

We investigated how human food influenced the trophic ecology of the Rocky Mountain Red Fox within Grand Teton National Park. From 2016 – 2021, we collected 55 whisker samples and 52 hair samples from 40 unique individuals and analyzed them using stable isotope analysis (δ13C and δ15N) for diet exploration.

### Files and variables

#### File: JMAMM-2022-220.csv

**Description:** Stable isotope data of Rocky Mountain red fox in Grand Teton National Park from 2016 - 2022 

##### Variables

* AID: Animal ID
* Sex: Sex of animal
* Age: Age of animal 
* Collar.data: Did we have GPS data for the animal
* Tissue.Type: Whisker or guard hair
* d15N: Uncorrected Nitrogen values
* d13C: Uncorrected Carbon values
* Date.Collected: Date sample was collected
* Section: Hair and whisk...