[LTER-sbc_all] Fwd: [Seminars] PHD Seminar - Emma Wear - Thursday, March 23rd

[Jenny Dugan]

-------- Original Message --------
From: Azure Stewart <azure.stewart at lifesci.ucsb.edu>
Date: Mar 16, 2017 3:46:17 PM
Subject: [Seminars] PHD Seminar - Emma Wear - Thursday, March 23rd
To: seminars at lifesci.ucsb.edu



  


 ***Ph.D. Seminar**  

 
  Emma Wear Interdepartmental Graduate Program in Marine Science "Bottom-up drivers of bacterial community composition and metabolism of dissolved organic carbon in the Santa Barbara Channel" 
 
Thursday, March 23rd, 11am
 
     
MSRB auditorium
 
Committee: Craig Carlson, Mark Brzezinski, David Siegel
   
Abstract
 I will discuss three projects relating to bottom-up controls on bacterial community composition and bacterial use of dissolved organic carbon (DOC). A time-series study in the Santa Barbara Channel illustrated that the bacterial community in this system displays both repeatable seasonality and long-term and episodic shifts in composition. A series of field experiments conducted during a diatom bloom demonstrated that the bloom-associated DOC, which accumulated in the surface waters as the bloom progressed, contributed to several metabolic and biogeochemically-relevant pools. Finally, laboratory experiments using DOC from nutrient-stressed diatoms showed that DOC bioavailability to bacteria depends on diatom source species, stressing nutrient, and the timeframe of interest. 

 
 
 

 



--

Jenny Dugan

Marine Science Institute
University of California
Santa Barbara, CA 93106-6150
Phone: 805-893-2675
email: j_dugan at lifesci.ucsb.edu
http://msi.ucsb.edu/people/research-scientists/jenny-dugan () 
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