Page 6 - HarmfulAlgaeReadMe
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Mean Conditions in the Strait of
Georgia
Mean near-surface conditions for the
Strait of Georgia since 2015. This figure
summarizes thousands of stations, the
combined efforts of dozens of people
over many years.
nd
Note in particular the 2 row, which
shows the seasonal and inter-annual
changes in the the biomass of primary
producers (phytoplankton) in the Strait,
the ultimate source of organic material
for all animal life in the Strait. Sometime
during March/April in each year the
spring phytoplankton bloom occurs and
the biomass increases tremendously
before exhausting the immediately
available nutrients. Since this very
important event sometimes occurs
between sampling times, or earlier than
sampling occurred in some years, red
markers are show to indicate the bloom
time as estimated from continuous
3a) Fraser River inflow b) Chlorophyll biomass (vertical bars
show spring bloom timing from other programs c) measurements of near-surface
Alexandrium spp. d) Chaetoceros convolutus and Chlorophyll from BC ferries.
concavicorne e) Dictyocha spp. f) Dinophysis spp. g)
Heterosigma akashiwo
