<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:12.0pt'>Friday, 11 May 2012 1PM<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>Both North and Central Puget Sound are experiencing diatoms as the dominant phytoplankton species again today, with Chaetoceros (Hyalochaete spp.), Thalassiosira, Nitzchia spp. and other taxa. Shaughn Hollcroft of AGS at Cypress Island reported a prevalence of diatoms in that area. The general vicinity is usually not vertically stratified except in mid to late summer and depending on tidal conditions and weather. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>The water near Manchester/Clam Bay/Bainbridge Island is fairly turbid with large chains of diatom cells today according to Scott Ridgeway of AGS and increasing water temperature (now about 10C). Bremerton had a sewage spill (again) recently and in summer that sometimes has been correlated strongly with some HAB events, but it is probably not highly stratified yet. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>Near Port Angeles Randy Hodgin reports relatively clear water with naturally low dissolved oxygen, following a Thalassiosira bloom a few days ago when dissolved oxygen was supersaturated. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>Yesterday’s MODIS satellite image provided by Brandon Sackmann (Ecology) below show relatively low chlorophyll concentrations overall, but a major increase associated with the Fraser River plume (that could be turbidity related too) that was pointing due south at the time of the image recording. Northern Bellingham Bay, the waters around the San Juan Islands and backwaters of the Whidbey Basin, Port Susan and parts of deep South Puget Sound indicate enhanced chlorophyll concentrations and/or effects of river discharge. Two days of images that Brandon provided are attached for your inspection. This is very helpful as the NOAA coastwatch website is currently not providing any imagery from 2012. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>The long term weather forecast is for more sunny weather, and with declining tidal exchange, it is possible that we could see a seasonally early shift from diatom to microflagellates and dinoflagellates until conditions change. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>Please report any observations you may have via the list serv if you will, so that others may benefit. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><img width=732 height=900 id="Picture_x0020_1" src="cid:image003.jpg@01CD2F7B.6E6666A0"><span style='font-size:12.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></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 234<sup>th</sup> Street N.E.<o:p></o:p></p><p class=MsoNormal>Arlington WA 98223<o:p></o:p></p><p class=MsoNormal>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><a href="http://noaa.aquamodel.net/index.html">http://noaa.aquamodel.net/index.html</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>