SoundHAB: Port Angeles Harbor June Heterosigma bloom data

[Jack Rensel]

Nice data set!  Kudos to Brett for the extra effort and to Randy Hodgin,
site manager.  

 

It might benefit researchers to have the excel file raw data if it is
available and could be posted to SoundHab? 

 

It will be interesting (gulp) to see what the future brings as Salish Sea
warming continues.  Hopefully we can continue to get more main channel and
backwater continuous data sets of the major driving factors like water
temperature, PAR, tidal amplitude and wind speed.   

 

Best regards,  

 

Jack

 

From: soundhab-bounces at whoi.edu [mailto:soundhab-bounces at whoi.edu] On Behalf
Of Kevin Bright
Sent: Wednesday, July 9, 2014 1:34 PM
To: soundhab at whoi.edu; soundhab-bounces at whoi.edu
Subject: SoundHAB: Port Angeles Harbor June Heterosigma bloom data

 

Thanks to the persistent efforts of our long time American Gold Seafoods
employee Brett Raemer, a large amount of data was collected before, during
and after a massive Heterosigma bloom in June. Brett kept up a consistent
sampling program while the farm was in the middle of a Heterosigma bloom
that was causing heavy fish stock mortalities. When Brett wasn't diving in
the fish pens and helping the farm staff deal with the impact of a fish
killing Heterosigma bloom, he was running around Port Angeles Harbor
collecting water samples and counting slides under the microscope. Not an
easy task. 

 

Below is a graph of the data he collected from a single sample station in
the harbor. Signs of stress and increased fish mortalities began to occur on
the 11th when concentrations of Heterosigma reached 3,500 cells/ml by that
afternoon. Afternoon flood tides would push the worst water from the west
side of Port Angeles Harbor into the farm site located at the end of Ediz
Hook. On the evening of June 14th very bad water (5,100 cell/ml) hit the
site and likely did the most damage to the captive fish stocks. This can be
seen in some of the data with the PM counts being generally much higher than
the AM counts. 

 

Also, this Heterosigma bloom lasted longer than the many I have seen in the
past. Cell counts remained above 1,000 per ml for nearly 14 days, fueled by
abundant sunlight, the large Fraser River plume and maybe a bit of
Victoria's secret. 

 

Kevin 

 



 

 

Kevin Bright, Permit Coordinator

American Gold Seafoods

Anacortes Office: (360) 293-9448

Cell: (360) 391-2409

http://home.icicleseafoods.com/imagelib/Logos/AGS.gif

 

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