High-Arctic nesting geese occupying less favourable nest sites are more vulnerable to predation

Helen B Anderson (Corresponding Author), Eva Fuglei, Jesper Madsen, Rene Van der Wal

Research output: Contribution to journalArticle

Abstract

In a simple, rodent-free Arctic ecosystem in Svalbard, we assessed the nest-site characteristics of the main (and highly abundant) migratory herbivore—pink-footed geese (Anser brachyrhynchus)—to determine which nesting geese were preferentially attacked and killed by the only local predator of adult geese, the Arctic fox (Vulpes lagopus). We collected data on goose carcasses and nest-site characteristics at one of the main pink-footed goose breeding areas in Svalbard. Arctic foxes depredated adult pink-footed geese from just over a quarter of the unsuccessful nests in the colony and carcasses were generally found just under 10 m away from a nest. Geese that occupied nests of poorer quality (limited visibility, further distance to forage patches and situated on flatter slopes) and were less well established (indicated by the low degree of fertilization from accumulations of goose droppings) were more likely to be depredated by Arctic foxes. As geese show a high degree of nest-site fidelity and preferentially occupy nests with better protection against depredation and closer to feeding areas, we propose that Arctic foxes targeted, and were more successful in killing younger, more inexperienced or low-quality geese that occupied less favourable nest sites.
Original languageEnglish
Article number3352
JournalPolar Research
Volume38
DOIs
Publication statusPublished - 18 Jun 2019

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nest site
Visibility
Ecosystems
nest
predation
site fidelity
visibility
rodent
forage
breeding
predator
Rodentia

Keywords

  • Predator-prey interactions
  • Arctic foxes
  • pink-footed geese
  • late snowmelt
  • PINK-FOOTED GOOSE
  • FOXES ALOPEX-LAGOPUS
  • REPRODUCTIVE SUCCESS
  • BARNACLE GEESE
  • SNOW COVER
  • POPULATION
  • FOOD
  • AVAILABILITY
  • EXPANSION
  • RESPONSES

Cite this

High-Arctic nesting geese occupying less favourable nest sites are more vulnerable to predation. / Anderson, Helen B (Corresponding Author); Fuglei, Eva; Madsen, Jesper; Van der Wal, Rene.

In: Polar Research, Vol. 38, 3352, 18.06.2019.

Research output: Contribution to journalArticle

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note = "We thank Norwegian Polar Institute for logistical sup-port and the Governor of Svalbard for allowing access to Sassendalen. The authors thank the Climate-ecological Observatory for Arctic Tundra programme for assistance with this study. Comments and suggestions from review-ers greatly improved the manuscript, and we thank them for their time and recommendations.",
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