Movement of foraging tundra swans explained by spatial pattern in cryptic food densities

R.H.G. Klaassen, B.A. Nolet, D. Bankert

Research output: Contribution to journalArticleAcademicpeer-review

44 Citations (Scopus)

Abstract

We tested whether Tundra Swans use information on the spatial distribution of cryptic food items (belowground Sago pondweed tubers) to shape their movement paths. In a continuous environment, swans create their own food patches by digging craters, which they exploit in several feeding bouts. Series of short (1 m). Tuber biomass densities showed a positive spatial auto-correlation at a short distance (25 g/m2) and to a more distant patch (at 7¿8 m) if the food density in the current patch had been low (3 m) from a low-density patch and a short distance (
Original languageEnglish
Pages (from-to)2244-2254
JournalEcology
Volume87
Issue number9
DOIs
Publication statusPublished - 2006

Keywords

  • correlated random-walk
  • searching behavior
  • patchy environment
  • bayesian foragers
  • bewicks swans
  • energy gain
  • heterogeneity
  • field
  • information
  • depression

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