Cascading effects of humans, through wolves, in a multiple land use ecosystem
Wolves (Canis lupus) have strong influences in terrestrial food webs through predation. Depending on the land use type (e.g. ranching, forestry, oil and gas), humans influence wolf density and distribution. We tested whether human activities affect predator-prey interactions and herbivory in a food...
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ftunibolognairis:oai:cris.unibo.it:11585/907026 2024-04-14T08:10:11+00:00 Cascading effects of humans, through wolves, in a multiple land use ecosystem Muhly TB Musiani M Muhly* TB Musiani M 2009 ELETTRONICO https://hdl.handle.net/11585/907026 eng eng ispartofbook:Book of abstracts - Carnivore Conference 2009: Carnivore conservation in a changing world Carnivore Conference 2009: Carnivore conservation in a changing world firstpage:193 lastpage:193 numberofpages:1 https://hdl.handle.net/11585/907026 No keywords available info:eu-repo/semantics/conferenceObject 2009 ftunibolognairis 2024-03-21T16:59:58Z Wolves (Canis lupus) have strong influences in terrestrial food webs through predation. Depending on the land use type (e.g. ranching, forestry, oil and gas), humans influence wolf density and distribution. We tested whether human activities affect predator-prey interactions and herbivory in a food chain in Southwest Alberta, Canada. We estimated human distribution using digital camera traps (n = 55). We obtained Global Positioning System telemetry data from wolves (n = 16), elk (n = 110) and cattle (n = 31). We calculated resource Selection Functions using Generalized Linear mixed models (GLmms) to test the spatial relationship between humans, wolves, elk (Cervus elaphus) and cattle and vegetation utilization (n= 148 plots) on the landscape. We found that while elk exhibited anti-predator behavior in response to wolf presence (i.e., drops in distance to cover, z=7.082, P<0.001, and in food quality of habitat used, z=4.454, P<0.001), cattle did not. Anti-predator response by elk confirms wolves can exert ecosystem effects through predation. by directly influenc- ing wolf density and distribution, humans may indirectly influence herbivory patterns of ungulates and ultimately, vegetation utilization. Such effects may be different depending on the land use activity. Poor anti-predator responses suggest that cattle are vulnerable to wolf predation and ensuing ecosystem effects are likely different compared to wild ungulates. Furthermore, predation on domestic cattle elicits intolerance by humans, generating a nega- tive feedback that maintains wolves at low densities Conference Object Canis lupus IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) Canada Tive ENVELOPE(12.480,12.480,65.107,65.107) |
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IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
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ftunibolognairis |
language |
English |
topic |
No keywords available |
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No keywords available Muhly TB Musiani M Cascading effects of humans, through wolves, in a multiple land use ecosystem |
topic_facet |
No keywords available |
description |
Wolves (Canis lupus) have strong influences in terrestrial food webs through predation. Depending on the land use type (e.g. ranching, forestry, oil and gas), humans influence wolf density and distribution. We tested whether human activities affect predator-prey interactions and herbivory in a food chain in Southwest Alberta, Canada. We estimated human distribution using digital camera traps (n = 55). We obtained Global Positioning System telemetry data from wolves (n = 16), elk (n = 110) and cattle (n = 31). We calculated resource Selection Functions using Generalized Linear mixed models (GLmms) to test the spatial relationship between humans, wolves, elk (Cervus elaphus) and cattle and vegetation utilization (n= 148 plots) on the landscape. We found that while elk exhibited anti-predator behavior in response to wolf presence (i.e., drops in distance to cover, z=7.082, P<0.001, and in food quality of habitat used, z=4.454, P<0.001), cattle did not. Anti-predator response by elk confirms wolves can exert ecosystem effects through predation. by directly influenc- ing wolf density and distribution, humans may indirectly influence herbivory patterns of ungulates and ultimately, vegetation utilization. Such effects may be different depending on the land use activity. Poor anti-predator responses suggest that cattle are vulnerable to wolf predation and ensuing ecosystem effects are likely different compared to wild ungulates. Furthermore, predation on domestic cattle elicits intolerance by humans, generating a nega- tive feedback that maintains wolves at low densities |
author2 |
Muhly* TB Musiani M |
format |
Conference Object |
author |
Muhly TB Musiani M |
author_facet |
Muhly TB Musiani M |
author_sort |
Muhly TB |
title |
Cascading effects of humans, through wolves, in a multiple land use ecosystem |
title_short |
Cascading effects of humans, through wolves, in a multiple land use ecosystem |
title_full |
Cascading effects of humans, through wolves, in a multiple land use ecosystem |
title_fullStr |
Cascading effects of humans, through wolves, in a multiple land use ecosystem |
title_full_unstemmed |
Cascading effects of humans, through wolves, in a multiple land use ecosystem |
title_sort |
cascading effects of humans, through wolves, in a multiple land use ecosystem |
publishDate |
2009 |
url |
https://hdl.handle.net/11585/907026 |
long_lat |
ENVELOPE(12.480,12.480,65.107,65.107) |
geographic |
Canada Tive |
geographic_facet |
Canada Tive |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_relation |
ispartofbook:Book of abstracts - Carnivore Conference 2009: Carnivore conservation in a changing world Carnivore Conference 2009: Carnivore conservation in a changing world firstpage:193 lastpage:193 numberofpages:1 https://hdl.handle.net/11585/907026 |
_version_ |
1796307695325675520 |