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Title: Effects of vulture exclusion on carrion consumption by facultative scavengers

Journal Article · · Ecology and Evolution
DOI: https://doi.org/10.1002/ece3.3840 · OSTI ID:1419087
ORCiD logo [1];  [2];  [3];  [3];  [1]
  1. Mississippi State Univ., Mississippi State, MS (United States)
  2. U.S. Department of Agriculture, Sandusky, OH (United States)
  3. Univ. of Georgia, Aiken, SC (United States); Univ. of Georgia, Athens, GA (United States)

Vultures provide an essential ecosystem service through removal of carrion, but glob-ally, many populations are collapsing and several species are threatened with extinction. Widespread declines in vulture populations could increase the availability of carrion to other organisms, but the ways facultative scavengers might respond to this increase have not been thoroughly explored. We aimed to determine whether facultative scavengers increase carrion consumption in the absence of vulture competition and whether they are capable of functionally replacing vultures in the removal of car-rion biomass from the landscape. We experimentally excluded 65 rabbit carcasses from vultures during daylight hours and placed an additional 65 carcasses that were accessible to vultures in forested habitat in South Carolina, USA during summer (June–August). We used motion- activated cameras to compare carrion use by facultative scavenging species between the experimental and control carcasses. Scavenging by facultative scavengers did not increase in the absence of competition with vultures. We found no difference in scavenger presence between control carcasses and those from which vultures were excluded. Eighty percent of carcasses from which vultures were excluded were not scavenged by vertebrates, compared to 5% of carcasses that were accessible to vultures. At the end of the 7- day trials, there was a 10.1- fold in-crease in the number of experimental carcasses that were not fully scavenged com-pared to controls. Facultative scavengers did not functionally replace vultures during summer in our study. This finding may have been influenced by the time of the year in which the study took place, the duration of the trials, and the spacing of carcass sites. Our results suggest that under the warm and humid conditions of our study, facultative scavengers would not compensate for loss of vultures. Carcasses would persist longer in the environment and consumption of carrion would likely shift from vertebrates to decomposers. Such changes could have substantial implications for disease transmission, nutrient cycling, and ecosystem functioning.

Research Organization:
Univ. of Georgia, Athens, GA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
EM0004391; DE‐EM0004391
OSTI ID:
1419087
Alternate ID(s):
OSTI ID: 1419088; OSTI ID: 1509713
Journal Information:
Ecology and Evolution, Vol. 8, Issue 5; ISSN 2045-7758
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 53 works
Citation information provided by
Web of Science

References (80)

Nested species-rich networks of scavenging vertebrates support high levels of interspecific competition journal January 2016
Aspects of Coyote Predation on Angora Goats journal May 1997
Scavengers and detritivores of kangaroo harvest offcuts in arid Australia journal January 2004
Another Continental Vulture Crisis: Africa's Vultures Collapsing toward Extinction: African vultures collapsing toward extinction journal June 2015
Home Ranges of Sympatric Black and Turkey Vultures in South Carolina journal January 2004
Diclofenac residues as the cause of vulture population decline in Pakistan journal January 2004
Microbial Community Functional Change during Vertebrate Carrion Decomposition journal November 2013
The first whole genome and transcriptome of the cinereous vulture reveals adaptation in the gastric and immune defense systems and possible convergent evolution between the Old and New World vultures journal October 2015
Scavenger community response to the removal of a dominant scavenger journal May 2011
Understanding how mammalian scavengers use information from avian scavengers: cue from above journal March 2017
Resource dispersion and consumer dominance: scavenging at wolf- and hunter-killed carcasses in Greater Yellowstone, USA: Resource dispersion and consumer dominance journal September 2003
Diet of free-ranging domestic dogs (Canis familiaris) in rural Zimbabwe: implications for wild scavengers on the periphery of wildlife reserves journal February 2002
Ungulate Carcasses Perforate Ecological Filters and Create Biogeochemical Hotspots in Forest Herbaceous Layers Allowing Trees a Competitive Advantage journal September 2009
Foraging by pine marten Martes martes in relation to food resources in Białowieża National Park, Poland journal October 1993
Cadaver decomposition in terrestrial ecosystems journal November 2006
Dropping dead: causes and consequences of vulture population declines worldwide: Worldwide decline of vultures journal December 2011
Scavenging on European bison carcasses in Bialowieza Primeval Forest (eastern Poland) journal January 2003
Carcass size shapes the structure and functioning of an African scavenging assemblage journal February 2015
Deer Carcass Decomposition and Potential Scavenger Exposure to Chronic Wasting Disease journal July 2009
Scavenging by vertebrates: behavioral, ecological, and evolutionary perspectives on an important energy transfer pathway in terrestrial ecosystems journal August 2003
Nuisance Ecology: Do Scavenging Condors Exact Foraging Costs on Pumas in Patagonia? journal January 2013
The Digestive Tract of the Whiteback Griffon Vulture and its role in Disease Transmission Among wild Ungulates journal July 1975
Increasing awareness of avian ecological function journal August 2006
Bovine Tuberculosis in Doñana Biosphere Reserve: The Role of Wild Ungulates as Disease Reservoirs in the Last Iberian Lynx Strongholds journal July 2008
Is Wildlife Going to the Dogs? Impacts of Feral and Free-roaming Dogs on Wildlife Populations journal February 2011
Effects of Vulture Declines on Facultative Scavengers and Potential Implications for Mammalian Disease Transmission journal March 2012
The microbiome of New World vultures journal November 2014
Urbanisation alters processing of marine carrion on sandy beaches journal November 2013
Limited functional redundancy in vertebrate scavenger guilds fails to compensate for the loss of raptors from urbanized sandy beaches journal September 2014
Foraging and diet of the red fox Vulpes vulpes in relation to variable food resources in Biatowieza National Park, Poland journal April 1992
Modelling the effects of sanitary policies on European vulture conservation journal October 2012
Are Vultures Birds, and Do Snakes Have Venom, because of Macro- and Microscavenger Conflict? journal January 2006
Abiotic and biotic factors modulate carrion fate and vertebrate scavenging communities journal September 2017
Direct Mortality of Birds from Anthropogenic Causes journal December 2015
Food consumption by captive Indian white-backed Vultures Gyps bengalensis under different feeding conditions journal August 2006
Scavenging Efficiency of Turkey Vultures in Tropical Forest journal August 1986
Effects of carrion resources on herbivore spatial distribution are mediated by facultative scavengers journal May 2009
Why Fruits Rot, Seeds Mold, and Meat Spoils journal July 1977
Seasonal Food Habits of the Coyote in the South Carolina Coastal Plain journal March 2008
Factors influencing the acquisition of rodent carrion by vertebrate scavengers and decomposers journal March 2004
Identification of vertebrate scavengers of small mammal carcasses in a forested landscape journal June 2002
Counting the cost of vulture decline—An appraisal of the human health and other benefits of vultures in India journal September 2008
Mesopredators dominate competition for carrion in an agricultural landscape journal May 2011
Quantifying the potential pathogens transmission of the blowflies (Diptera: Calliphoridae) journal March 2003
Diet shift of a facultative scavenger, the wolverine, following recolonization of wolves journal November 2008
Roads and Their Major Ecological Effects journal November 1998
Scavenging efficiency and red fox abundance in Mediterranean mountains with and without vultures journal February 2017
Factors affecting carcass use by a guild of scavengers in European temperate woodland journal December 2005
The avian scavenger crisis: Looming extinctions, trophic cascades, and loss of critical ecosystem functions journal June 2016
A Summer Carrion Study of the Baby Pig Sus Scrofa Linnaeus journal September 1965
Causes of mortality in North American populations of large and medium-sized mammals: Causes of mortality in mammals journal April 2011
North American population estimates of waterbirds, vultures and hawks from migration counts in Veracruz, México journal December 2009
Competition at the carcass: opportunities for social foraging by turkey vultures in southern Ontario journal June 1991
Obligate vertebrate scavengers must be large soaring fliers journal June 2004
Home Range, Habitat Use and Survival of Coyotes in Western South Carolina journal October 2009
Evidence of the role of European wild boar as a reservoir of Mycobacterium tuberculosis complex journal February 2008
Chemically Mediated Competition Between Microbes and Animals: Microbes as Consumers in food webs journal November 2006
Soil and vegetation nutrient response to bison carcasses in Białowieża Primeval Forest, Poland journal January 2007
Patterns of Carbon dioxide Evolution from Decaying Carrion Decomposition of Small Mammal Carrion in Temperate Systems 1 journal January 1978
Effects of Experimental Exclusion of Scavengers from Carcasses of Anthrax-Infected Herbivores on Bacillus anthracis Sporulation, Survival, and Distribution journal April 2013
Raven scavenging favours group foraging in wolves journal June 2004
Destruction of Bacteria in the Digestive Tract of the Maggot of Lucilia sericata (Diptera: Calliphoridae) journal March 2001
Catastrophic collapse of Indian white-backed Gyps bengalensis and long-billed Gyps indicus vulture populations journal March 2003
Home Ranges of Sympatric Black and Turkey Vultures in South Carolina journal August 2004
Modelling the effects of sanitary policies on European vulture conservation text January 2012
Data from: Effects of vulture exclusion on carrion consumption by facultative scavengers dataset January 2019
Data from: Effects of vulture exclusion on carrion consumption by facultative scavengers dataset January 2019
Abiotic and biotic factors modulate carrion fate and vertebrate scavenging communities journal September 2017
Cadaver decomposition in terrestrial ecosystems journal November 2006
Soil and vegetation nutrient response to bison carcasses in Białowieża Primeval Forest, Poland journal January 2007
Obligate vertebrate scavengers must be large soaring fliers journal June 2004
Evidence of the role of European wild boar as a reservoir of Mycobacterium tuberculosis complex journal February 2008
Understanding how mammalian scavengers use information from avian scavengers: cue from above journal March 2017
The first whole genome and transcriptome of the cinereous vulture reveals adaptation in the gastric and immune defense systems and possible convergent evolution between the Old and New World vultures journal October 2015
Nuisance Ecology: Do Scavenging Condors Exact Foraging Costs on Pumas in Patagonia? journal January 2013
Microbial Community Functional Change during Vertebrate Carrion Decomposition journal November 2013
Destruction of Bacteria in the Digestive Tract of the Maggot of Lucilia sericata (Diptera: Calliphoridae) journal March 2001
Nested species-rich networks of scavenging vertebrates support high levels of interspecific competition journal January 2016
The Digestive Tract of the Whiteback Griffon Vulture and its role in Disease Transmission Among wild Ungulates journal July 1975
Modelling the effects of sanitary policies on European vulture conservation text January 2012

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The mesoscavenger release hypothesis and implications for ecosystem and human well‐being journal May 2019
Cause‐specific mortality of the world’s terrestrial vertebrates journal January 2019
Necrobiome framework for bridging decomposition ecology of autotrophically and heterotrophically derived organic matter journal September 2018
Roads do not increase carrion use by a vertebrate scavenging community journal November 2018
Avoidance of carnivore carcasses by vertebrate scavengers enables colonization by a diverse community of carrion insects journal August 2019
Top carnivore decline has cascading effects on scavengers and carrion persistence journal November 2018
Data from: Effects of vulture exclusion on carrion consumption by facultative scavengers dataset January 2019
Necrobiome Framework for Bridging Decomposition Ecology of Autotrophically and Heterotrophically Derived Organic Matter journal January 2019
Data from: Effects of vulture exclusion on carrion consumption by facultative scavengers dataset January 2019
Roads do not increase carrion use by a vertebrate scavenging community journal November 2018
Effect of mammalian mesopredator exclusion on vertebrate scavenging communities journal February 2020
Uncovering the vertebrate scavenger guild composition and functioning in the Cerrado biodiversity hotspot journal July 2021
Avoidance of carnivore carcasses by vertebrate scavengers enables colonization by a diverse community of carrion insects journal August 2019
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Figures / Tables (5)