Bodil Elmhagen

Home

Publications: Abstract

Results in short

Study area
- About Fennoscandia

Scientific background

In Swedish

     
 

Abstract

Dalén L, Elmhagen B, Angerbjörn A. (2004) DNA analysis on fox faeces and competition induced niche shifts. Molecular Ecology 13: 2389-2392.

Interference competition can force inferior competitors to change their distribution patterns. It is, however, possible that the dominant competitor poses a higher threat during certain times of the year, for example during reproduction. In such cases, the inferior competitor is expected to change its distribution accordingly. We used a molecular species identification method on faeces to investigate how the spatial overlap between arctic and red foxes changes between seasons. The results show that arctic and red foxes are sympatric during winter, but allopatric in summer as arctic foxes retreat to higher altitudes further from the tree-line during the breeding season.

Reference
Dalén L, Elmhagen B, Angerbjörn A. (2004) DNA analysis on fox faeces and competition induced niche shifts. Molecular Ecology 13: 2389-2392.

 
   

 

 

Arctic fox faeces