Reliable Instruments for an Unreliable World

search.jpg
  • Grey Twitter Icon
  • Grey Facebook Icon
  • Grey LinkedIn Icon
  • Grey YouTube Icon

Investigating the Relationship Between Physical Mixing Processes & Phytoplankton Dynamics in Toolik Lake

October 28, 2011

Parameters:  Chlorophyll

 

Turner Designs fluorometers (Model 10-AU) were used to investigate the relationship between physical mixing processes and phytoplankton dynamics in Toolik Lake, an Arctic Tundra Lake located on the North Slope of Alaska. A field fluorometer equipped to measure rhodamine dye was used to determine the vertical and horizontal movement of inflowing waters during storms and lake mixing events. In vivo fluorescence measurements were made simultaneously with a second fluorometer to determine the impact of these physical events on phytoplankton distributions in the lake. Coupled with DCMU additions, the in vivo fluorescence measurements provided additional information on the degree and nature of phytoplankton nutrient/light limitation. In the laboratory we used two additional 10-AU fluorometers; one was used for chlorophyll a determinations and another for ammonium assays employing a newly developed fluorometric technique (Holmes et al. in press). All of the fluorometers worked flawlessly. We were very impressed with their rugged design and stability. In addition, the Water Puppy pump was a joy to use and greatly assisted with the in-vivo measurements and in collecting water samples.

 

Author: Dr. Sally MacIntyre & Jim Sickman, Leo Moosmann & Dr. Sara Goldthwait
Institution: Marine Science Institute University of California, Toolik Lake, Alaska, USA

Share on Facebook
Share on Twitter
Please reload

Please reload

Recent Posts
RSS Feed
Stay Connected
Contact Us

1995 N 1st Street
San Jose, CA 95112-4220
USA

ISO 9001:2015 Certified | Copyright © 2018-2019 Turner Designs, Inc. All rights reserved.