Mesoscale eddies and survival of late stage Pacific sardine (Sardinops sagax) larvae

  • Logerwell E
  • Smith P
  • 48


    Mendeley users who have this article in their library.
  • 95


    Citations of this article.


We examined the distribution of sardine larvae relative to environmental
conditions with the purpose of identifying and characterizing habitat
that encourages high larval growth and survival, based on the 1983-1998
surveys of the California Cooperative Oceanic Fisheries Investigations
(CalCOFI). Long-term averages show that sardine 'survivors' (spatially
aggregated larvae >= 18 days old) were most abundant offshore, whereas
sardine egg density, chlorophyll biomass and zooplankton volume were
greatest inshore. In contrast, mesoscale eddies, observed in remotely
sensed sea surface temperature imagery, were found only in offshore
regions. To further examine the link between eddies - which often
result in locally elevated chlorophyll and zooplankton - and sardine
survival, we compared the distribution of larvae and eddies survey
by survey. Sardine survivors were most abundant offshore in only
one-quarter of the research surveys, and when they were most abundant
offshore they were associated with eddies. This indicates that the
offshore eddy habitat produced exceptionally large numbers of survivors,
as evidenced by the disproportionate effect on the long-term average.

Author-supplied keywords

  • California Cooperative Oceanic Fisheries Investigations
  • California Current
  • Mesoscale eddies
  • Pacific sardine
  • Prerecruit survival
  • Sardinops sagax

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text


  • Elizabeth A. Logerwell

  • Paul E. Smith

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free