SoundHAB: FW: North Hood Canal bloom update

[Jan Newton]

Please see:
http://www.hoodcanal.washington.edu/observations/bloom_fishkill.jsp
for more info on this bloom.

Jan

-- 

Jan A. Newton, Ph.D. 
Principal Oceanographer 
Applied Physics Laboratory 
University of Washington 
1013 NE 40th St 
Seattle WA 98105-6698 
206 543 9152 



Jack Rensel wrote:
> I've just looked at the net samples Jim Postel collected last Friday in 
> Dabob Bay.  The bloom is the coccolithophorid Emiliania huxleyi.  
>
> It can be identified at 400 x - look for the small cells, ca. 6-8 um in 
> diameter, that have black, oval to round shaped spots on them 
> (coccoliths).  The coccoliths may or may not be present all over the cells 
> and many are probably loose in the water.  The black spots may look like 
> black rings/ovals with an empty center.  The cells themselves are usually 
> pale yellow.  They are rather non-descript, but once you see them, they 
> are relatively easy to identify.  Because they are so small, they will go 
> through a 20 um mesh net, but enough are usually caught so you can ID 
> them.  I let the sample sit overnight in the refrigerator so the cells 
> sink and then pipette around the edge of the jar where most of the cells 
> settle.  
>
> Hope this helps.
>
> Rita A. Horner                        373 Marine Science Bldg
> School of Oceanography
> Box 357940                            Phone:  206-543-8599
> University of Washington              Fax:  206-543-0275
> Seattle, WA  98195-7940               rita at ocean.washington.edu
>
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