[All-postdocs] Fwd: [biodep] Reminder: Bioseminar today - Dr. Amanda Timmerman, Scripps

[Maria Pachiadaki]

----- Forwarded message from Margot McKlveen <mmcklveen at whoi.edu> -----
    Date: Thu, 3 Dec 2020 09:33:52 -0500
    From: Margot McKlveen <mmcklveen at whoi.edu>
Subject: [biodep] Reminder: Bioseminar today - Dr. Amanda Timmerman, Scripps
      To: biodep at whoi.edu, jp-bio-students at mit.edu

**

*Biology Department Virtual Seminar*

*

Thursday, December 3 at Noon, see below for Zoom link


Dr. Amanda Timmerman, Staff Research Associate Scripps Institution of  
Oceanography


Fronts implicated as the missing mechanism driving phytoplankton  
variability in the iron-limited subarctic NE Pacific

Despite being an ocean region where productivity is limited by a lack  
of iron, the offshore subarctic NE Pacific is important to the ocean’s  
uptake of atmospheric carbon dioxide through biological processes. It  
is also the location of a long running time series program (Line P),  
where observations are thought to represent the surrounding area. This  
region has historically been characterized as having low and invariant  
chlorophyll concentrations, suggesting little variability in carbon  
cycling. Here we challenge this assumption, showing instead that  
chlorophyll has structure on mesoscales using shipboard sampling,  
satellite, and model output. Higher chlorophyll concentrations are  
associated with elevated productivity and carbon export rates. This  
elevated productivity water also shows phytoplankton species shifts,  
supporting iron inputs. We hypothesize the mechanism for introducing  
iron into surface waters is offshore fronts (defined here as 1°C  
change in temperature over a 1/3 degree distance) and can explain  
variability throughout the iron-limited region. Such a mechanism has  
important implications for how observations at the time series are  
used to understand the wider region.


Join Zoom Meeting

https://whoi-edu.zoom.us/j/99575831095?pwd=b3Fkazh1S21oeG9ySEhscWVlUldmZz09  
<https://whoi-edu.zoom.us/j/99575831095?pwd=b3Fkazh1S21oeG9ySEhscWVlUldmZz09>


Meeting ID: 995 7583 1095

Passcode: 1n*Z2$

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Meeting ID: 995 7583 1095

Passcode: 146014

Find your local number: https://whoi-edu.zoom.us/u/abGFNgpznh

*

-- 
Margot McKlveen | she/her
Senior Administrative Assistant
Woods Hole Oceanographic Institution
Redfield Building Room 305 | MS 32
266 Woods Hole Rd.
Woods Hole, MA 02543
508-289-2334
mmcklveen at whoi.edu

----- End forwarded message -----
-- 
Maria Pachiadaki (she/her)

Assistant Scientist
Biology Department
Woods Hole Oceanographic Institution

266 Woods Hole Rd.
Redfield 322
MS# 32
Woods Hole, MA 02543-1050

@microbiaki
+1 508 289 2943

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Subject: [biodep] Reminder: Bioseminar today - Dr. Amanda Timmerman, Scripps
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