SoundHAB: Possible Harmful Bloom in Totten Inlet

[Aimee Christy]

Thanks for the information.  

 

Pacific Shellfish Institute has been collecting weekly phytoplankton samples
from Totten Inlet from May to early September of this year.  We began seeing
Akashiwo at low concentrations (40,000 cells/L) on 7/7 and cell counts
increased to 460,000 cells/L by 7/21.  They remained at or near this
concentration until peaking on 8/18 (684,000 cells/L).  Dissipation seemed
to occur around 9/8 (175,000 cells/L) when we collected our final sample for
the season.  It appears something triggered the initiation of another
bloom..a sizeable one at that.  

 

In 2002-2003, we collected weekly plankton samples in Totten Inlet for a
mussel raft project.  Maximum Akashiwo counts for those 2 years were 268,000
cells/L (8/26/02) and 586,000 cells/L (8/7/03).  

 

Hope this information is helpful.

 

Aimee Christy

 

Pacific Shellfish Institute   

 

 

 

 

From: soundhab-bounces at whoi.edu [mailto:soundhab-bounces at whoi.edu] On Behalf
Of Brian Bill
Sent: Friday, October 15, 2010 8:45 PM
To: soundhab at whoi.edu
Subject: Re: SoundHAB: Possible Harmful Bloom in Totten Inlet

 

The dense bloom of marine algae in recent samples from Totten Inlet is
Akashiwo sanguinea. This dinoflagellate was responsible for bird deaths on
the outer Washington coast in late summer/fall 2009 due to the production of
a surfactant like compound. Bird deaths were also attributed to A. sanguinea
in Monterey Bay in 2007. 

A cell count of the whole water sample was 660,000 cells/L.

 

 

On Oct 14, 2010, at 11:42 AM, Jack Rensel wrote:





Gordon King of Taylor Shellfish reports a very dense bloom of some kind of
marine algae in portions of Totten Inlet presently.   If any SoundHAB
recipients are in the area and can sample, please take live or formalin
preserved samples so we can identify the potential culprit.  

 

Also, several of you have asked about the HAB publication that I just
produced with Tim Tynan and Nicky Haigh about Heterosigma affecting wild
fish and salmon, so I attach it here for your use.  This is pertinent to
Totten Inlet as the Kennedy Creek Chum would normally be milling in the area
at this time, with mean run timing of mid November.

 

Best regards,

 

Jack

 

J.E. Jack Rensel Ph.D.

Rensel Associates Aquatic Sciences

4209 234th Street N.E.

Arlington WA 98223 USA

360-435-3285

cell: 360-631-6538

jackrensel at att.net

www.AquaModel.org <http://www.AquaModel.org/> 

 

 

 

 

 

<Rensel et al. Fraser River sockeye decline and
Heterosigma.pdf>_______________________________________________
SoundHAB mailing list
SoundHAB at whoi.edu
http://mailman.whoi.edu/mailman/listinfo/soundhab

 

---------------------

Brian D. Bill

NOAA Fisheries

2725 Montlake Blvd E.

Seattle, WA  98112

 

206-860-3387

206-860-3335 fax

brian.d.bill at noaa.gov

www.nwfsc.noaa.gov/hab/

---------------------

 





 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.whoi.edu/pipermail/soundhab/attachments/20101016/e2b30c82/attachment.htm