Journal
ECOGRAPHY
Volume 44, Issue 2, Pages 149-161Publisher
WILEY
DOI: 10.1111/ecog.05251
Keywords
ecological disturbance; movement ecology; sensory ecology; sensory pollution; wildlife
Categories
Funding
- NASA [NNX17AG36G, NNH10ZDA001N]
- National Park Service
- U.S. Geological Survey
- Utah Division of Wildlife Resources
- Nevada Dept of Wildlife
- Arizona Game and Fish Dept
- Dept of Energy
- Bureau of Land Management
- U.S. Forest Service
- USDA Wildlife Services
- U.S. Fish & Wildlife Service
- USGS
- Utah Army National Guard
- Kennecott Utah Copper Corporation
- African Safari Club of Florida
- Utah's Hogle Zoo
- Utah Chapter of the American Association of Zoo Keepers
- Carson Valley Chukar Club
- Shepreth Wildlife Park
- Dugway Proving Ground
- Grand Canyon Conservancy
- Grand Canyon Trust
- Johnson Family Foundation
- Mule Deer Foundation
- Nevada Agricultural Experiment Station
- Nevada Bighorns Unlimited
- Nevada Division of State Lands
- Lake Tahoe License Plate Grant
- Northern Nevada Chapter of the Safari Club
- Rocky Mountain Elk Foundation
- Safari Club International
- Summerlee Foundation
- Sportsman for Fish and Wildlife
- Utah Archery Association
- Wildlife Conservation Society
Ask authors/readers for more resources
The study found that deer utilized anthropogenic environments for foraging and were more active at night, while cougars killed deer at the wildland-urban interface and hunted them in darker locations. Light had the greatest effect on where cougars killed deer at the wildland-urban interface.
Artificial nightlight is increasingly recognized as an important environmental disturbance that influences the habitats and fitness of numerous species. However, its effects on wide-ranging vertebrates and their interactions remain unclear. Light pollution has the potential to amplify land-use change, and as such, answering the question of how this sensory stimulant affects behavior and habitat use of species valued for their ecological roles and economic impacts is critical for conservation and land-use planning. Here, we combined satellite-derived estimates of light pollution, with GPS-data from cougarsPuma concolor(n = 56), mule deerOdocoileus hemionus(n = 263) and locations of cougar-killed deer (n = 1562 carcasses), to assess the effects of light exposure on mammal behavior and predator-prey relationships across wildland-urban gradients in the southwestern United States. Our results indicate that deer used the anthropogenic environments to access forage and were more active at night than their wildland conspecifics. Despite higher nightlight levels, cougars killed deer at the wildland-urban interface, but hunted them in the relatively darkest locations. Light had the greatest effect of all covariates on where cougars killed deer at the wildland-urban interface. Both species exhibited functional responses to light pollution at fine scales; individual cougars and deer with less light exposure increasingly avoided illuminated areas when exposed to greater radiance, whereas deer living in the wildland-urban interface selected elevated light levels. We conclude that integrating estimates of light pollution into ecological studies provides crucial insights into how the dynamic human footprint can alter animal behavior and ecosystem function across spatial scales.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available