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Deer activity levels and patterns vary along gradients of food availability and anthropogenic development.
Sci Rep
May 2024
Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, 47907, USA.
Animal activity reflects behavioral decisions that depend upon environmental context. Prior studies typically estimated activity distributions within few areas, which has limited quantitative assessment of activity changes across environmental gradients. We examined relationships between two response variables, activity level (fraction of each day spent active) and pattern (distribution of activity across a diel cycle) of white-tailed deer (Odocoileus virginianus), with four predictors-deer density, anthropogenic development, and food availability from woody twigs and agriculture.
View Article and Find Full Text PDFLockdown's Silver Lining? Different Levels of Roadkill during the COVID-19 Times in Lithuania.
Animals (Basel)
September 2023
Nature Research Centre, Akademijos Str. 2, 08412 Vilnius, Lithuania.
The impact of COVID-19 restrictions on human and vehicular mobility on the number of roadkills of wild mammals, and roe deer in particular, was assessed in Lithuania. We statistically analyzed the distribution of all mammals and roe deer () as the most abundant species annually from 2002 to 2022 and monthly from 2020 to 2021, including during the two restriction periods. Notably, there was a marked decrease in roadkill incidents on main, national and regional roads, particularly in April-May 2020 (the beginning of lockdown period I) and November-December 2020 (the beginning of lockdown period II), 5.
View Article and Find Full Text PDFSynchronous effects produce cycles in deer populations and deer-vehicle collisions.
Ecol Lett
February 2021
Deparment of Ecology and Evolutionary Biology and Kansas Biological Survey, University of Kansas, 2101 Constant Ave, Lawrence, KS, 66049, USA.
Population cycles are fundamentally linked with spatial synchrony, the prevailing paradigm being that populations with cyclic dynamics are easily synchronised. That is, population cycles help give rise to spatial synchrony. Here we demonstrate this process can work in reverse, with synchrony causing population cycles.
View Article and Find Full Text PDFWhite-tailed deer response to vehicle approach: evidence of unclear and present danger.
PLoS One
June 2015
United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, Ohio Field Station, Sandusky, Ohio, United States of America.
The fundamental causes of animal-vehicle collisions are unclear, particularly at the level of animal detection of approaching vehicles and decision-making. Deer-vehicle collisions (DVCs) are especially costly in terms of animal mortality, property damage, and safety. Over one year, we exposed free-ranging white-tailed deer (Odocoileus virginianus) to vehicle approach under low ambient light conditions, from varying start distances, and vehicle speeds from 20 km/h to approximately 90 km/h.
View Article and Find Full Text PDFBenefits to rare plants and highway safety from annual population reductions of a "native invader," white-tailed deer, in a Chicago-area woodland.
Environ Sci Pollut Res Int
January 2014
National Wildlife Research Center, Wildlife Services, USDA/APHIS, 4101 LaPorte Ave., Fort Collins, CO, 80521, USA,
Overabundant white-tailed deer are one of the most serious threats to woodland plant communities in the Chicago area. Moreover, the abundant deer in a highly populated area causes economic harm and poses hazards to human safety through collisions with vehicles. The artificial conditions causing the overabundance and resulting consequences qualify the white-tailed deer in the Chicago area to be considered as "native invaders".
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