Data from: Apex predators and the facilitation of resource partitioning among mesopredators
Apex predators may influence carnivore communities through the suppression of competitively dominant mesopredators, however they also provide carrion subsidies that could influence foraging and competition among sympatric mesopredators when small prey is scarce. We assessed coyote Canis latrans and...
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Online Access: | https://doi.org/10.5061/dryad.b273t |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::81c7cf36fee9af8ad27f984f8f25f31c 2023-05-15T15:51:12+02:00 Data from: Apex predators and the facilitation of resource partitioning among mesopredators Sivy, Kelly J. Pozzanghera, Casey B. Colson, Kassidy E. Mumma, Matthew A. Prugh, Laura R. 2017-01-01 https://doi.org/10.5061/dryad.b273t en eng Dryad http://dx.doi.org/10.5061/dryad.b273t https://dx.doi.org/10.5061/dryad.b273t lic_creative-commons 10.5061/dryad.b273t oai:easy.dans.knaw.nl:easy-dataset:99762 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:99762 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 Scavenging mesopredators facilitation Canis latrans Vulpes vulpes Life sciences medicine and health care envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2017 fttriple https://doi.org/10.5061/dryad.b273t 2023-01-22T16:53:22Z Apex predators may influence carnivore communities through the suppression of competitively dominant mesopredators, however they also provide carrion subsidies that could influence foraging and competition among sympatric mesopredators when small prey is scarce. We assessed coyote Canis latrans and red fox Vulpes vulpes winter diet overlap and composition from scats collected in two study areas with >3-fold difference in grey wolf Canis lupus density due to a wolf control program. We hypothesized that differences in diet composition would be driven by the use of carrion, and tested whether 1) apex predators facilitate resource overlap, or 2) apex predators facilitate resource partitioning. We estimated the available biomass of snowshoe hares and voles based on pellet density and vole capture rates in each study area. We used molecular analysis to confirm species identification of predator scats, and used microscopic evaluation of prey remains to analyze diet composition of 471 coyote and fox scats. Ungulate carrion, voles and snowshoe hares comprised 73% of coyote and fox diet, and differences in use of carrion and microtines accounted for nearly 60% of the dissimilarity in diet among these canids. Carrion was the top-ranked item in the coyote diet in both study areas, whereas carrion use by red foxes declined >3-fold in the study area with higher wolf and small prey abundance. Diet overlap tended to be lower and diet diversity tended to be higher where wolves were more abundant, though these trends were not statistically significant. Taken together, our findings indicate that carrion provisions could facilitate resource partitioning in mesocarnivore communities by alleviating exploitation competition for small mammals. Coyote and red fox scat contentsThis file contains data of percent volume of items found in 471 coyote and red fox scats collected in interior Alaska, winter 2013-2014. "Scat number" refers to the sample number, "Study area" refers to the study area from which the scat was collected, ... Dataset Canis lupus Alaska Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Scavenging mesopredators facilitation Canis latrans Vulpes vulpes Life sciences medicine and health care envir geo |
spellingShingle |
Scavenging mesopredators facilitation Canis latrans Vulpes vulpes Life sciences medicine and health care envir geo Sivy, Kelly J. Pozzanghera, Casey B. Colson, Kassidy E. Mumma, Matthew A. Prugh, Laura R. Data from: Apex predators and the facilitation of resource partitioning among mesopredators |
topic_facet |
Scavenging mesopredators facilitation Canis latrans Vulpes vulpes Life sciences medicine and health care envir geo |
description |
Apex predators may influence carnivore communities through the suppression of competitively dominant mesopredators, however they also provide carrion subsidies that could influence foraging and competition among sympatric mesopredators when small prey is scarce. We assessed coyote Canis latrans and red fox Vulpes vulpes winter diet overlap and composition from scats collected in two study areas with >3-fold difference in grey wolf Canis lupus density due to a wolf control program. We hypothesized that differences in diet composition would be driven by the use of carrion, and tested whether 1) apex predators facilitate resource overlap, or 2) apex predators facilitate resource partitioning. We estimated the available biomass of snowshoe hares and voles based on pellet density and vole capture rates in each study area. We used molecular analysis to confirm species identification of predator scats, and used microscopic evaluation of prey remains to analyze diet composition of 471 coyote and fox scats. Ungulate carrion, voles and snowshoe hares comprised 73% of coyote and fox diet, and differences in use of carrion and microtines accounted for nearly 60% of the dissimilarity in diet among these canids. Carrion was the top-ranked item in the coyote diet in both study areas, whereas carrion use by red foxes declined >3-fold in the study area with higher wolf and small prey abundance. Diet overlap tended to be lower and diet diversity tended to be higher where wolves were more abundant, though these trends were not statistically significant. Taken together, our findings indicate that carrion provisions could facilitate resource partitioning in mesocarnivore communities by alleviating exploitation competition for small mammals. Coyote and red fox scat contentsThis file contains data of percent volume of items found in 471 coyote and red fox scats collected in interior Alaska, winter 2013-2014. "Scat number" refers to the sample number, "Study area" refers to the study area from which the scat was collected, ... |
format |
Dataset |
author |
Sivy, Kelly J. Pozzanghera, Casey B. Colson, Kassidy E. Mumma, Matthew A. Prugh, Laura R. |
author_facet |
Sivy, Kelly J. Pozzanghera, Casey B. Colson, Kassidy E. Mumma, Matthew A. Prugh, Laura R. |
author_sort |
Sivy, Kelly J. |
title |
Data from: Apex predators and the facilitation of resource partitioning among mesopredators |
title_short |
Data from: Apex predators and the facilitation of resource partitioning among mesopredators |
title_full |
Data from: Apex predators and the facilitation of resource partitioning among mesopredators |
title_fullStr |
Data from: Apex predators and the facilitation of resource partitioning among mesopredators |
title_full_unstemmed |
Data from: Apex predators and the facilitation of resource partitioning among mesopredators |
title_sort |
data from: apex predators and the facilitation of resource partitioning among mesopredators |
publisher |
Dryad |
publishDate |
2017 |
url |
https://doi.org/10.5061/dryad.b273t |
genre |
Canis lupus Alaska |
genre_facet |
Canis lupus Alaska |
op_source |
10.5061/dryad.b273t oai:easy.dans.knaw.nl:easy-dataset:99762 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:99762 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 |
op_relation |
http://dx.doi.org/10.5061/dryad.b273t https://dx.doi.org/10.5061/dryad.b273t |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.b273t |
_version_ |
1766386275375382528 |