GLIN==> The CILER-GLERL Seminar Series welcomes Dr. Martin Stapanian, Research Ecologist, USGS-GLSC-Lake Erie Biological Station

Please join us *January 4, 2012, 10:30AM at NOAA's Great Lakes 
Environmental Research Lab* in Ann Arbor to hear Martin speak on:

"Effects of Increased Water Clarity on the Catchability of Fishes in 
Lake Erie due to Dreissenid Activity ".

Or, join us remotely via webinar. *Information to register for the 
webinar is found below, followed by the seminar announcement*.

A PDF of this announcement is attached to post around your organization.

Martin Stapanian received his Ph.D. in ecology from Kansas State 
University in 1980.  He has performed research on 5 continents and 2 
oceans.  He has worked on a wide variety of topics, including the 
population ecology of tigers and leopards in India, seed dispersal by 
birds in East Africa and Australia, electro-geochemistry of glacial 
meltwater, and the Alaska oil spill.  He has also developed several 
multivariate statistical tests that are in wide use.  He has worked in 
industry for 10 years, academia for 5 years, and the Federal government 
for the last 15 years.  He has worked with the USGS-Great Lakes Science 
Center-Lake Erie Biological Station since 1999, mainly on fish populations.


	
Effects of Increased Water Clarity on the Catchability of Fishes in Lake 
Erie due to Dreissenid Activity

Join us for a Webinar on January 4



*Space is limited.*
Reserve your Webinar seat now at:
https://www2.gotomeeting.com/register/724307762

Water clarity in western Lake Erie increased markedly by the early 
1990s, a few years after the invasion of dreissenid mussels (Dreissena 
polymorpha and D. bugensis).  In other systems, increased water clarity 
has resulted in greater trawl visibility, resulting in lower 
catchability of fishes.  We examine a 45-year time series of bottom 
trawl data collected during daylight and nighttime.  For the 4 most 
common fish species, nighttime catchability was significantly higher 
than daytime catchability following recorded increases in water clarity 
in 1991. For an economic species, yellow perch (Perca flavescens) 
trawling at night resulted in more conservative and reliable estimates 
of harvestable stock.

*Title:* 	Effects of Increased Water Clarity on the Catchability of 
Fishes in Lake Erie due to Dreissenid Activity
*Date:* 	Wednesday, January 4, 2012
*Time:* 	10:30 AM - 11:30 AM EST

After registering you will receive a confirmation email containing 
information about joining the Webinar.

*System Requirements*
PC-based attendees
Required: Windows® 7, Vista, XP or 2003 Server

Macintosh®-based attendees
Required: Mac OS® X 10.5 or newer

	




-- 
Sander D. Robinson
Outreach Director and Administrative Coordinator
Cooperative Institute for Limnology and Ecosystems Research (CILER)
G110 Dana Building (SNRE)
University of Michigan
440 Church St.
Ann Arbor, MI  48109-1041
(734)255-6643
Alternate e-mail:sander.robinson at noaa.gov


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