Program and Agenda

Abstract

FINE SCALE ECOLOGY OF PICOEUKARYOTES ACROSS THE KUROSHIO EXTENSION

Open ocean fronts are known to support high levels of phytoplankton biomass and productivity, however their role in shaping phytoplankton communities is not well understood. Here we present the results of a high resolution ecological survey of photosynthetic picoeukaryotes across the Kuroshio Extension Front. Ostreococcus dominated clone libraries taken from a subset of samples representing different water masses across the front. Only two of the four known Ostreoccous clades (OI and OII) were detected. Both clades were present in the same sample for more than half of those collected across the front. Combining analysis of the physical circulation, environmental variables and an idealized reaction-diffusion model we examine the processes controlling the distribution of the two Ostreococcus clades across the front. We show that the complex mesoscale and submesoscale circulation of the region mingles the two clades from different source regions, and stimulates growth of both clades through vertical nutrient injections. This combination of molecular techniques, detailed hydrography and simple models represents a powerful new tool in the study of phytoplankton ecology.

ePoster:

Authors

Clayton, S., University of Washington, USA, sclayton@mit.edu

Lin, Y. C., Institute of Environmental Biology and Fishery Science, National Taiwan Ocean University, Taiwan ROC, d96310001@gmail.com

Follows, M. J., Massachusetts Institute of Technology, USA, mick@ocean.mit.edu

Worden, A. Z., Monterey Bay Aquarium Research Institute, USA, azworden@mbari.org

Details

Poster presentation

Session #:094
Date: 2/27/2014
Time: 16:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: 937