Here's the greatest hits so far. It's pretty ugly, but hey, this is plankton!
Chlorophyll composite (stations I used and depths used for integration
Surface temperature field and lipids: - These are ratios, wax ester and
triacylgyceride normalized to phospholipid concentration, to get rid of body
Lipid concentrations over chlorophyll contours - the first two panels are as
third panel is WE:TAG, sort of a storage:metabolically active index (not too
informative, I'm afraid).
Lipid concentrations versus integrated chlorophyll concentration. Not the
greatest I've ever seen, but integrated chlorophyll has got to be an index of
available food, at best.
Surface nutrient concentrations:
I don't have any graphs for the correlograms yet, I've just been using the
matricies. Here is the chart for wax ester:
Quantitative measurements of lipid class composition were taken from the most abundant copepods (primarily Calanus sp.) collected during the US GLOBEC California Current broadscale cruise of July 2000. Storage and metabolically active lipids (wax esters and triacylglycerols respectively) were generally positively correlated with in situ phytoplankton biomass (as measured by extracted chl-a concentration), but not strongly so. Inshore waters were characterized by cooler temperatures, higher nitrate and chl-a concentrations, while offshore waters were the opposite: warmer, and with lower nitrate and chl-a concentrations . Correspondingly, the highest lipid concentrations occurred over the shelf, and the lowest beyond the shelf edge. Over the shelf, triacylglycerol concentrations were highest in areas with low nitrate while wax ester concentrations were independent of nitrate, suggesting that short-term lipid accumulation had occurred over time scales longer than that of upwelling and primary productivity.
Examination of the spatial structure of lipid concentrations with Mantel correlograms indicates that the greatest differences occurred at scales on order of 25 km. The greatest differences in temperature and phytoplankton biomass occurred at scales considerably smaller than that (less than 10 km). These results suggest that lipid accumulation is driven by smaller scale processes, rather than regional ones.