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X-WR-CALNAME;VALUE=TEXT:UMCES Events
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DTSTART:20181104T020000
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UID:calendar.3788.field_date_time.0@www.umces.edu
DTSTAMP:20260419T142832Z
CREATED:20190425T122524Z
DESCRIPTION:May 1\, 2019 3:00pm to 4:00pm    \n    \n      \n\n\n    \n\n  
             \nInstitute of Marine & Environmental Technology\n      \n\n\n
 \n\n  \n\n    \n\n              \n\n\n      \n  \n\n    \n\n              
 \n\n\nTitle: Patterns and Impacts of Microalgal Blooms in Lower Chesapeake
  Bay\n\n\n\nSpeaker: Dr. Kimberly Reece (Chair and Professor\, Aquatic Hea
 lth Sciences\, Virginia Institute of Marine Science)\n\n\n\nAbstract: A re
 latively consistent pattern of microalgal blooms takes place in lower Ches
 apeake Bay\, although year to year variations in rainfall\, temperature\, 
 wind\, salinity and other environmental parameters can effect timing\, den
 sities\, distributions\, and even bloom occurrence in a given year. Late s
 ummer blooms of the harmful algal bloom (HAB)  species Margalefidinium (fo
 rmerly Cochlodinium) polykrikoides have happened almost annually for many 
 decades and for the past decade the HAB species Alexandrium monilatum also
  has been blooming in the region. Both species have been increasing in den
 sity and distribution throughout lower Chesapeake Bay in recent years. A p
 redictable population progression typically occurs with peak cell concentr
 ations of M. polykrikoides followed a few weeks later by peak concentratio
 ns of A. monilatum. Reports of juvenile oyster mortalities from local shel
 lfish aquaculturists during and immediately following these blooms have pr
 ompted studies with adult and juvenile oysters with an aim toward identify
 ing mitigation strategies. Field studies are examining the impacts of thes
 e HABs and other stressors\, including temperature and low dissolved oxyge
 n\, on various oyster life stages using different grow-out strategies. The
  toxin goniodomin A was isolated from water samples collected during A. mo
 nilatum blooms and was found to cause rapid mortality in larval shellfish 
 and finfish in laboratory studies. Field studies showed that mortality was
  slightly higher for oysters grown intertidally at bloom exposed sites dur
 ing the blooms than for those grown at a reference site. Bottom sediment s
 amples were collected from 2014-2018 to map and quantify A. monilatum cyst
 s by qPCR and cysts were found to be widespread in the region with increas
 ing densities over time. \n\n\n\nHost: Dr. Colleen Burge
DTSTART;TZID=America/New_York:20190501T150000
DTEND;TZID=America/New_York:20190501T160000
LAST-MODIFIED:20190425T122524Z
SUMMARY:IMET Seminar: Dr. Kimberly Reece (Chair and Professor\, Aquatic Hea
 lth Sciences\, Virginia Institute of Marine Science)
URL;TYPE=URI:https://www.umces.edu/events/imet-seminar-dr-kimberly-reece-ch
 air-and-professor-aquatic-health-sciences-virginia-institute
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