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Introduction: Note from the Environmental Marketing Manager
In the Spotlight:
Introducing the New Submersible Active Fluorometer - PhytoFlash

Submersible Active Fluorometer in Action: Coastal Ocean Projects Program/River Influences on Shelf Ecosystems Columbia River, Oregon/Washington
Tom's Corner: New Turner Designs Knowledge Database

New Applications Scientist: Please Meet Lawrence Younan
Upcoming Events: View Our Upcoming Tradeshows
TD News Archives: View the Archives
Turner Designs Databank: What is it? How does it work? Why participate?
In the April edition of TD News we are very excited to announce our newest product in a long line of Turner Designs fluorometers. Our research and development team has designed the first solid-state Submersible Active Fluorometer PhytoFlash. PhytoFlash differs from our traditional fluorometers in providing complex physiological information such as the quantum efficiency of phytoplankton. Real-time active fluorescence data enhances the suite of parameters used in monitoring and research studies. Active fluorescence values will provide information such as indicator of nutrient status, natural or anthropogenic toxins in the water column, as well as ecosystem status. These data are an important component to large-scale water monitoring programs as well as aquatic research projects. Please see our website for PhytoFlash performance data, application notes and specifications.

In this edition we are also excited to introduce Turner Designs' Application Scientist Lawrence Younan. Finally we'd like to announce our new Knowledge Database, an interactive internet based search engine that will assist you with technical and application based questions on our entire line of fluorometers.

Yours Truly,
Chelsea Donovan

Environmental Marketing Manager


Introducing the New Submersible Active Fluorometer - PhytoFlash
The PhytoFlash is the first solid state (patent pending)
in situ variable fluorescence system that will detect the
quantum efficiency of phytoplankton in both oligotrophic and mesotrophic environments.

Unlike other active fluorometers, researchers can
determine real-time in situ physiological parameters of
phytoplankton in low chlorophyll systems at a fraction of
the price. PhytoFlash's increased sensitivity allows users to
obtain physiological parameters in coastal, open ocean and
freshwater systems.

PhytoFlash can be operated in three different modes. The Self-Contained Mode allows users to deploy PhytoFlash for extended periods of time in conjunction with the Turner Designs battery pack and internal data logging capabilities. The Integration Mode enables PhytoFlash to mate with a CTD or third-party system. Finally the Laboratory Mode allows users to access data from response curves for additional physiological information.

For PhytoFlash product information, performance data or to request a quote, please visit our website.



Coastal Ocean Projects Program/River Influences on Shelf Ecosystems (RISE) Columbia River, Oregon/Washington: Dr. Raphael Kudela from the University of Santa Cruz

RISE (River Influences on Shelf Ecosystems) is a 5-year interdisciplinary study of the Columbia River plume, funded by the Coastal Ocean Program of the National Science Foundation. The UCSC component of RISE includes the Kudela Lab. Kudela's group is responsible for remote sensing, bio-optics and phytoplankton productivity estimates using stable and radiotracer techniques ( This study addresses three hypotheses during a 5-year program (2003-2008):

During upwelling the growth rate of phytoplankton within the plume exceeds that in nearby areas outside the plume being fueled by the same upwelling macronutrients.
The plume enhances cross-margin transport of plankton and nutrients.
Plume-specific nutrients (iron and silicate) alter and enhance productivity on nearby shelves.


Figure 1: Satellite image of chlorophyll a distribution at the mouth of the Columbia River. For more information, click here.

Study Site
RISE focuses on the highly productive Eastern Boundary river plume originating from the Columbia River located in the Pacific Northwest. Chlorophyll
and productivity are not uniform along the Pacific Northwest coast- they are higher in the Columbia
River plume and over the shelf north of the river mouth compared with the region south of the river mouth. The Columbia River itself provides little nitrate to the coast, although it does supply large amounts of silicate and as much dissolved iron as the Mississippi.

The PhytoFlash was integrated into the CIMT CTD January 2006 shipboard survey. Water samples were collected with Niskin bottles and processed for extracted chlorophyll a.

Data provided by:
Dr. Raphael Kudela, Associate Professor
Ocean Sciences Department
University of California Santa Cruz
1156 High Street, Santa Cruz, CA 95064

For more PhytoFlash performance data, please visit the Turner Designs Databank.

Graph 1. The PhytoFlash was deployed as part of the NSF sponsored RISE program off the Oregon/Washington coast. Samples were collected from Niskin bottles, dark adapted for 30 minutes, and then run in laboratory mode. As expected there was a decrease in FvFm moving from onshore to offshore, and from surface to depth.



fluorometerIn a continuing effort to provide Turner Designs' customers with comprehensive customer support, Turner Designs has recently released a Technical Support Knowledge Database. The Knowledge Database (KDB) will be maintained to be a continually growing source of technical information to assist customers in the use of Turner Designs products. The Technical Database can be browsed to find specific product information, operational procedures, hardware questions, customer service procedures and general questions.

This database also features a search engine to assist in quickly finding information on a specific topic. It is the intent that the KDB will provide the quickest response for getting answers to questions of a general nature. To search the KDB, enter the topic of interest in the area provided for text input and click on the Go button. It is also possible to view all of the articles for a specific category. For more in-depth questions, technical support can be contacted after trying the KDB.

Your feedback and input are not only welcome but essential in continually improving our KDB. Therefore, please feel free to use the Add case link at the bottom of the main screen to submit ideas for future articles or suggest inclusion of information you feel would be of interest. Also the Feedback link provides a means to contact the technical support team on any question you may have regarding Turner Designs' products and services.

To access the Turner Designs KDB please visit:




Please Meet Lawrence Younan
We recently hired a new Application Scientist Lawrence Younan. Lawrence came to us from the Biological Oceanography Department at Moss Landing Marine Labs in Monterey, California. Lawrence has direct experience working with large scale monitoring programs such as the Sanctuary Integrated Monitoring Network (SIMoN) project monitoring microalgal communities of Elkhorn Slough. He is versed in laboratory and field applications focused on phytoplankton population dynamics and characterization. We are continuously trying to add talent and expertise from the field that will add to our diverse research and development team. We are excited to have Lawrence on board!


Turner Designs Databank

In response for more 'real-world' data from our customers, Turner Designs has launched the TD Databank Program where we present examples of customer research for all instruments and applications. The Databank is organized according to instrument type and application and offers our users real-world examples of how researchers and technicians are using Turner Designs instruments in their work. In addition to providing meaningful information for our customers, by having a description of your work highlighted on our website, it will serve as a means of reaching a greater number of scientists around the globe. We see this as a highly effective means of assisting our users in making informed decisions. In order for this type of program to succeed, we need information from you on your application and how a Turner Designs fluorometer is helping you.

fluorometerWe have designed the TD Databank to make submitting an application summary as easy as possible. The entire process should not take more than 20 minutes. We ask for a brief description of your research, and how you use Turner instruments. Also, a picture or graph of data collected with Turner instruments is requested. To show our appreciation for your databank articles, we will send you a Turner Designs sports bag. Claim your sports bag now by submitting your Databank article!

We hope you will join us in this exciting and useful program by sharing your knowledge and experience with scientists and technicians around the globe. To take part, please visit


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