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Is the risk of nest predation heterospecifically density-dependent in precocial species belonging to different nesting guilds?
Kristianstad University, School of Education and Environment. (Akvatisk biologi och kemi, Avdelningen för Naturvetenskap)
Finnish Game and Fisheries Research Institute, Joensuu Game and Fisheries Research.
2011 (English)In: Canadian Journal of Zoology, ISSN 0008-4301, E-ISSN 1480-3283, Vol. 89, no 12, 1164-1171 p.Article in journal (Refereed) Published
Abstract [en]

Nest predation is a key source of mortality and variation in fitness, but the effect co-occurring species belonging to different nesting guilds have on each other’s nest success is poorly understood. By using artificial nests, we tested if predation on cavity nests of Common Goldeneyes (Bucephala clangula (L., 1758)) is increased in the presence of ground nests of Mallards (Anas platyrhynchos L., 1758) and vice versa. Specifically, by adding ground nests in the vicinity of cavity nests, we tested the hypothesis that predation on cavity nests is heterospecifically density-dependent. A shared predator, the pine marten (Martes martes (L., 1758)), was intensively hunted in one of the study areas, but not in the other, leading to most individuals in the former being naïve immigrants. Cavity-nest fate was not affected by addition of ground nests. Similarly, ground-nest survival did not decrease when nearby cavity nests were depredated. Fate of nests in a given nest cavity was highly predictable between years in the study area with minimal removal of pine martens, but not in the one with intensive removal. Predation rate was higher on cavity nests than on ground nests. Predation on ground nests was lower in the study area with intensive removal of pine martens. We conclude there was neither apparent competition between guilds nor heterospecific density-dependence in predation risk.

Place, publisher, year, edition, pages
2011. Vol. 89, no 12, 1164-1171 p.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:hkr:diva-8903DOI: 10.1139/z11-093ISI: 000298441400002OAI: oai:DiVA.org:hkr-8903DiVA: diva2:478456
Available from: 2012-01-16 Created: 2012-01-16 Last updated: 2012-01-20Bibliographically approved

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Elmberg, Johan
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Total: 42 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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