CIE Seminar Series – 2019: Life in Glass Houses – Marine and freshwater travels with silica

SPEAKER: Associate Professor Erica Young, Department of Biological Sciences, University of Wisconsin-Milwaukee, USA

DATE: Friday, 24th May 2019

TIME: 1:30pm

LOCATION: Warrnambool Campus, Room G1.01 (Percy Baxter LT)

Seminar will also be video linked to the following campuses: Geelong Campus at Waurn Ponds – room ka4.207 and Melbourne Campus at Burwood –Burwood Corporate Centre

External visitors – wish to join us and connect to our seminars?
External parties may connect to the live seminar via *N SEBE VMP LES Seminars 52236958@deakin.edu.au [ID.36958] via the methods listed below:

  • For external guests, you can connect as a web guest by clicking HERE. If using Chrome you it will prompt you to install the Cisco Jaba Plugin, then it will prompt you to download the extension which you will need to install. Once this has been installed, you will have a black screen with a call button. You will just need to click call and it should connect into the VMP.
  • For Deakin staff and students, please join via Skype for Business (Lync) – if you have office installed you may already have Skype for business or Lync installed. You just need to look for it on the start menu. If you find it, you can log into skype using your Deakin email and password and then dial 36958.
  • Could not log in? More info on how to connect is available HERE or HERE.
  • From a mobile phone or landline: call +613 92517000, wait for the prompt,then enter the five digit VMP number (36958)
  • Please note that connection is only available while a seminar is taking place.

As a courtesy, we request that when connecting to the seminar that you mute your microphone unless you are required to speak, this would ensure that the sound from the speaker to the audience is not disrupted by feedback from your microphone – thank you!

ABSTRACT.

This talk will present an overview of Si biogeochemistry in aquatic ecosystems. The availability of silica can help structure aquatic phytoplankton communities with Si-requiring diatoms being an abundant and important group supporting food webs in marine and freshwater communities. Lake Michigan is a large freshwater lake within the Great Lakes which is showing long term increases in Si over the last decade. This cannot be explained in terms of changes to inputs, or changing Si demand by diatoms.

This talk with present some of our research to better understand Si cycling in the Lake, and to define the ‘players’ in freshwater Si cycles. Comparisons will be made with recent work on Si incorporation and labelling in marine macroalgae and phytoplankton species in Tasmania.

BIO.

Erica completed a BS with first class honors in Botany at University of Western Australia before heading to Sweden to work with symbiotic cyanobacteria. She returned to Monash University for a PhD in microalgal physiology of photosynthesis and nitrogen metabolism. After a post-doc in Ireland working on large kelps, she moved to University of Wisconsin on the shores of Lake Michigan.

Her current research spans microbial biodiversity and community analysis, nutrient transformations by key enzyme activities in algal and microbial communities, to biogeochemical cycling of macronutrients in lakes, ponds and coastal oceans. Recent work on silica cycling has brought her to Hobart for a sabbatical at Institute for Marine and Antarctic Studies at University of Tasmania.

Appointments with speaker may be made via Aleica Bellgrove (aleica.bellgrove@deakin.edu.au).

For more info: https://uwm.edu/biology/people/young-erica/.