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<p class=MsoNormal><span style='color:#1F497D'>Conditions and timing are ideal
for a <i>Heterosigma akashiwo</i> bloom in Puget Sound. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Some discrete areas of <i>Heterosigma</i>
concentrations and other species have been noticed in the past few days in
North Puget Sound and possibly other areas too. Fish culturists are
on alert and gathering more information at this time. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Presently tidal exchange is
large which in the past has limited bloom initiation. However, next week
smaller-range tides may coincide high volumes of snow pack riverine runoff and
calm-warm weather in this late June and early July time period.
Over the past 19 years, these conditions have often led to a fish-killing
bloom of <i>H. akashiwo</i>. It is impossible to predict with great
accuracy, but our conceptual model of bloom development indicates that bloom
conditions seem to be aligning. Large-scale blooms of this species
have been known to cover entire basins of Puget Sound and cause the death of both
farmed and wild fish and probably other organisms too. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Please report your observations
of blooms, cell counts or other related information to the more than 90
scientists and managers who subscribe to this list serve. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>This year we ask that you also
observe closely for the occurrence of large numbers of <i>Alexandrium catenella
</i>dinoflagellates (that cause paralytic shellfish poisoning). In
2006 a major <i>Heterosigma</i> bloom was preceded by a large bloom of <i>A.
catenella</i> and subsequently toxin levels reach very high proportions.
This information may assist the Washington State Dept. of Health in their
efforts to manage the safety of wild or cultured shellfish stocks. Some
concentrations of these cells have already been noted in the past few days. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thank you for your
participation,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Jack Rensel<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>J.E. Jack Rensel Ph.D.<o:p></o:p></p>
<p class=MsoNormal>Rensel Associates Aquatic Sciences<o:p></o:p></p>
<p class=MsoNormal>4209 234th Street N.E. <o:p></o:p></p>
<p class=MsoNormal>Arlington WA 98223 USA<o:p></o:p></p>
<p class=MsoNormal>360-435-3285<o:p></o:p></p>
<p class=MsoNormal>cell: 360-631-6538<o:p></o:p></p>
<p class=MsoNormal><a href="mailto:jackrensel@att.net">jackrensel@att.net</a><o:p></o:p></p>
<p class=MsoNormal><a href="http://www.AquaModel.org">www.AquaModel.org</a><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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