Ecological responses to climate change and climate
variability are often difficult to predict because of nonlinearities
in biotic responses.  This presents the need for close integration of
process-oriented experimental investigations with long term time
series measurements and modeling studies.  I will illustrate an
approach we have taken in the Northeast Pacific, integrating the
California Current Ecosystem Long-Term Ecological Research (CCE-LTER)
site with the remarkable CalCOFI time series.  I will also show the
merits of breaking open the « black boxes » of N, P, and Z, which are
classically represented in models by one or a limited number of
biological compartments.  The appropriate level of biological
granularity is highly dependent upon the question asked and the
physical scales considered.  The seminar will also briefly introduce
the Zooglider.  This is a novel autonomous instrument we have
developed that is particularly well suited to resolving fine scale
ocean phenomema, which are increasingly recognized as consequential
for ocean ecology and biogeochemistry.

Date & Room: mardi 24 octobre à 11h, salle du LOCEAN, couloir 45-55, 4ème étage, pièce 417