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Phytoplankton Data

All data linked from this page are in .PDF format. If you do not have
Adobe Acrobat Reader, you can download it for free at the Adobe website.

The following table contains PDF files each the weekly chlorophyll-a readings obtained
from every 10 meter depth interval Niskin bottle samples that were filtered at sea then analyzed
with a fluorometer 21 hours later. The graph's are organized into a single PDF file per month.

2003:

Jan	Feb	March	April	May	June	July	Aug	Sept	Oct	Nov	Dec
2003 Chl-A averaged over water column then plotted by date. 2003 GoMOOS Buoy "B" surface chl-a values plotted by month versus PULSE surface chl-a values by month.

Volunteer's from a group named the Great Bay Coast Watch has been graciously logging in about 12
hours a week to taxonomically analyze the Lugol's preserved samples. We are currently building that
database so check in periodically to see if it has been uploaded.

2004:

A new pigment measurement, phaeophytin, was added in March of 2004. Phaeophytin was added to the chlorophyll analysis because the pigment is a digestion product of chlorophyll-a and can be found in the fecal pellets of zooplankton that graze on phytoplankton. Fecal pellets are large enough to be retained on the standard glass fiber filters used in fluorometric analysis.

Furthermore, a new filter type was added to the procedures after March 2004. A larger pore filter was added for the retention of only larger particle greater than 8um. Chlorophyll fluorometric analysis with a larger filter pore in conjunction with the standard filter type will give information regarding the percentage of chlorophyll-a that is coming from larger phytoplankton cells such as diatoms.

These are the plots of Chl-a and the CTD fluorometer values:

These are the plots of the Chl-a values for each station: