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Spatial and temporal variability of bioluminescence potential in coastal regions Mark A. Moline*1; JF Case2; C Herren2; O Schofield3 (1) Biological Sciences Department, California Polytechnic State University, San Luis Obispo, CA, 93407, USA; (2) Marine Science Institute, University of California, Santa Barbara, CA 93106; (3) Coastal Ocean Observation Laboratory, Institute of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ 08901      *(mmoline@calpoly.edu) The development of small relatively compact bathyphotometers offers great potential to better define the spatial and temporal variability of bioluminescence. Spatial sampling of bioluminescence potential was conducted in July of 1999 and 2000 at the coastal Long Term Ecosystem Observatory (LEO-15). In 1999, a small-scale grid showed high maximum bioluminescence potential of 3.4E11 photons/sec/L from 2 to 12m in the southern third of the grid. These patterns were consistent with warmer water being advected from the southwest towards the northeast along a clockwise coastal eddy as evident from Acoustic Doppler Current Profiler and Coastal Ocean RADAR data. In addition to the spatial sampling, a month-long time series of bioluminescence potential was also collected at the LEO-15 site. A newly developed bathyphotometer was integrated into an automated profiler system 5 km off the coast in 15m of water. Water samples for taxonomic identification of phytoplankton and zooplankton were also taken simultaneously to quantify the source of the bioluminescence potentials over the month. As with the spatial data set, ancillary measurements of the physical, optical and chemical environments were collected. [Talk: moline.marka.03551]

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