INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE
The Alternative Prey Hypothesis (APH) states that predators switch to relatively more abundant prey when their main prey is scarce. Arctic lemming population cycles may indirectly affect predation risk on alternative prey such as shorebird nests as they share predators. I examined the indirect effec...
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ftyorkuniv:oai:yorkspace.library.yorku.ca:10315/40762 2023-05-15T14:31:06+02:00 INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE Hong, Milly McKinnon, Laura 2022-12-14T16:40:29Z application/pdf http://hdl.handle.net/10315/40762 en eng http://hdl.handle.net/10315/40762 Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests. Biology Ecology Zoology Dunlin Arctic Subarctic Fox Red fox Arctic fox Lemming Vole Population cycles High arctic Low arctic Alternative prey hypothesis Apparent competition Electronic Thesis or Dissertation 2022 ftyorkuniv 2022-12-25T00:01:30Z The Alternative Prey Hypothesis (APH) states that predators switch to relatively more abundant prey when their main prey is scarce. Arctic lemming population cycles may indirectly affect predation risk on alternative prey such as shorebird nests as they share predators. I examined the indirect effects of arvicoline rodent cycles on Dunlin (Calidris alpina hudsonia) reproduction in Churchill, Manitoba. Using 10 years of field data, the study suggests collared lemming (Dicrostonyx richardsoni) cycles did not influence Dunlin nest success. Meadow vole (Microtus pennsylvanicus) cycles had an interactive effect with arctic fox (Vulpes lagopus) and red fox (Vulpes vulpes) abundance, indirectly affecting Dunlin nest success. North Atlantic Oscillations had a positive effect on Dunlin nest success. The results suggest that subarctic ecosystems are more complex than the High Arctic with multispecies trophic dynamics that can be used to predict the changing landscapes of the Arctic as the boreal forest expands northwards. Thesis Arctic Fox Arctic Lemming Arctic Calidris alpina Churchill Dicrostonyx richardsoni North Atlantic Subarctic Vulpes lagopus York University, Toronto: YorkSpace Arctic |
institution |
Open Polar |
collection |
York University, Toronto: YorkSpace |
op_collection_id |
ftyorkuniv |
language |
English |
topic |
Biology Ecology Zoology Dunlin Arctic Subarctic Fox Red fox Arctic fox Lemming Vole Population cycles High arctic Low arctic Alternative prey hypothesis Apparent competition |
spellingShingle |
Biology Ecology Zoology Dunlin Arctic Subarctic Fox Red fox Arctic fox Lemming Vole Population cycles High arctic Low arctic Alternative prey hypothesis Apparent competition Hong, Milly INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE |
topic_facet |
Biology Ecology Zoology Dunlin Arctic Subarctic Fox Red fox Arctic fox Lemming Vole Population cycles High arctic Low arctic Alternative prey hypothesis Apparent competition |
description |
The Alternative Prey Hypothesis (APH) states that predators switch to relatively more abundant prey when their main prey is scarce. Arctic lemming population cycles may indirectly affect predation risk on alternative prey such as shorebird nests as they share predators. I examined the indirect effects of arvicoline rodent cycles on Dunlin (Calidris alpina hudsonia) reproduction in Churchill, Manitoba. Using 10 years of field data, the study suggests collared lemming (Dicrostonyx richardsoni) cycles did not influence Dunlin nest success. Meadow vole (Microtus pennsylvanicus) cycles had an interactive effect with arctic fox (Vulpes lagopus) and red fox (Vulpes vulpes) abundance, indirectly affecting Dunlin nest success. North Atlantic Oscillations had a positive effect on Dunlin nest success. The results suggest that subarctic ecosystems are more complex than the High Arctic with multispecies trophic dynamics that can be used to predict the changing landscapes of the Arctic as the boreal forest expands northwards. |
author2 |
McKinnon, Laura |
format |
Thesis |
author |
Hong, Milly |
author_facet |
Hong, Milly |
author_sort |
Hong, Milly |
title |
INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE |
title_short |
INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE |
title_full |
INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE |
title_fullStr |
INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE |
title_full_unstemmed |
INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE |
title_sort |
indirect effects of low amplitude arvicoline cycles on daily nest survival of dunlin (calidris alpina hudsonia) in a rapidly changing climate |
publishDate |
2022 |
url |
http://hdl.handle.net/10315/40762 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Fox Arctic Lemming Arctic Calidris alpina Churchill Dicrostonyx richardsoni North Atlantic Subarctic Vulpes lagopus |
genre_facet |
Arctic Fox Arctic Lemming Arctic Calidris alpina Churchill Dicrostonyx richardsoni North Atlantic Subarctic Vulpes lagopus |
op_relation |
http://hdl.handle.net/10315/40762 |
op_rights |
Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests. |
_version_ |
1766304824333172736 |