Skip to main content

Utility

  • Admissions
  • Exploring Grad School
  • Current Students
  • Diversity, Equity & Inclusion
  • Faculty + Staff
  • Alumni
Give
COVID-19 UPDATES
Report Sexual Misconduct
Home

Main navigation

Search is currently disabled
  • Academics
    • Master of Science
    • Master of Landscape Architecture
    • Doctoral (PhD)
    • Dual-Degree Programs
    • Graduate Certificate Programs
    • Undergraduate Program
    • Courses
  • Research + Impact
    • Sustainability Themes
    • PhD Profiles
    • Student Research
    • The Centers, Institutes + Initiatives
    • Faculty Profiles
    • Labs
  • Admissions
    • Exploring Graduate School
    • Why Michigan?
    • How to Apply
    • Funding
    • Online Games
    • Visit Campus
    • International Students
    • For Admitted Students
    • Admissions FAQs
    • Rackham Graduate School Resources
  • Student Services
    • SEAS Student Center
    • Career Services
    • Financial Aid
    • Academic Advising
    • Student Organizations
    • Student Development
    • Forms, Handbooks + Policies
    • Quick Links
  • News
    • Community Highlights
    • In the Media
    • Stewards Magazine
  • Events
    • Co-Sponsorship Form
    • Submit Event
    • Admissions Webinars
    • Gallery
  • About
    • Who We Are
    • Leadership
    • Demographics
    • Faculty Profiles
    • Administrative Departments + Staff
    • Facilities + Locations
    • Diversity, Equity + Inclusion
    • Art & Environment Gallery
    • Land Acknowledgement
    • History

Utility

  • Admissions
  • Exploring Grad School
  • Current Students
  • Diversity, Equity & Inclusion
  • Faculty + Staff
  • Alumni
Give
COVID-19 UPDATES
Report Sexual Misconduct
search icon Search
  • Academics
  • Research + Impact
  • Admissions
  • Student Services
  • News
    • Community Highlights
    • In the Media
    • Stewards Magazine
  • Events
  • About

Main navigation

  • Academics
  • Research + Impact
  • Admissions
  • Student Services
  • News
    • Community Highlights
    • In the Media
    • Stewards Magazine
  • Events
  • About

Estimating the loss and fragmentation of dark environments in mammal ranges from light pollution

May 5, 2021

A hallmark of the Anthropocene is the global expansion of pollution stemming from electric lighting. This evolutionarily novel phenomenon has left few spaces on Earth where natural light cycles remain unaltered. Assessing the exposure of species to light pollution is critical for developing conservation plans that address this expanding sensory pollutant. Here we used data from NASA's Visible Infrared Imaging Radiometer Suite to determine the contribution of full moonlight radiance to establish an ecologically-informed threshold of natural radiance. Using the geographic ranges of 351 mammals across the contiguous United States, we estimated the percentage of each species' range in which light pollution exceeded thresholds associated with direct emissions and skyglow, where it did not (“dark environment”), and the associated fragmentation of dark environments. Average mammal range contained 2.6% (95% CI: 2.3–3.2%) of area that consistently exceeded full moon radiance at point-source emissions, but with a large range among species (0–47.4%). Skyglow affected far greater percentages of ranges (X¯=24.3%; 95% CI: 22.1–26.8%). Nocturnal species had slightly greater exposure than diurnal species. Several families with the most impacted ranges included species of conservation concern (e.g., Molossidae; free-tailed bats). When assessing connectivity of dark environments, we found light pollution fragmented most mammal ranges and resulted in isolated dark refugia (e.g., 154% average increase in patches of dark environments). Identifying species with the greatest exposure to and dark environment fragmentation from light pollution is an important step for targeted conservation efforts of remaining dark refugia for light-sensitive species.

Faculty
Neil Carter
Link to paper
Biological Conservation
seas logo
University of Michigan School for Environment and Sustainability
Dana Building
440 Church Street
Ann Arbor, MI 48109
(734) 764-6453
Email us
facebook
twitter
instagram
linkedin
youtube
flickr
planet blue global impact logo

Footer

  • Contact us
  • Intranet
  • Contact Web Team

© 2023 The Regents of the University of Michigan | Privacy Policy | Diversity, Equity & Inclusion

Produced by Michigan Creative