Scale-specific density dependence in North Sea sandeel

Anna Rindorf*, Ole Henriksen, Mikael van Deurs

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

230 Downloads (Pure)


Density dependent demographic processes occur in many marine fishes and potentially enhance the stability of local aggregations and regional populations. The degree of density dependence exhibited at the population level is a combination of local density dependent effects acting on different spatial scales. In this study, we searched for density dependence in recruitment, growth and mortality of North Sea sandeel Ammodytes marinus at different spatial scales by analysing data at a spatial resolution specifically reflecting the mosaic of populated habitat patches. Two types of density dependent processes occurred: a shift in spatial distribution towards low mortality areas when overall recruitment was high, and an increase in local mortality as local density increased. When combined, these processes largely compensated for each other and the size of the overall population had little influence on population level mortality. The study points to the necessity of considering both local and regional scale processes in the analyses of density dependence.
Original languageEnglish
JournalMarine Ecology - Progress Series
Pages (from-to)97-110
Publication statusPublished - 2019


  • Spatial scale dependency
  • Density dependent distribution
  • Demographic processes

Fingerprint Dive into the research topics of 'Scale-specific density dependence in North Sea sandeel'. Together they form a unique fingerprint.

Cite this