Yesterday, Todd returned to us to train about 8 people from the River Center and other labs on the use of the new instrument, which is a slightly different model than the old MIMS. We also had lunch with about a dozen people where we discussed the different applications of the MIMS, including the different gases it can measure and the different kinds of samples it can measure (air, water; field samples, in line experiments, etc.). We are very excited to have this new capability in the lab, and look forward to all of the neat things we will learn with it!
A few weeks ago, Dr. Todd Kana delivered a new instrument to the River Center. The Membrane Inlet Mass Spectrometer, which Todd designs and builds, measures dissolved gases directly from water samples. We had one of these instruments in our lab at FIU, and used it to study denitrification in the Floridan Aquifer and in spring-fed and blackwater rivers.
Yesterday, Todd returned to us to train about 8 people from the River Center and other labs on the use of the new instrument, which is a slightly different model than the old MIMS. We also had lunch with about a dozen people where we discussed the different applications of the MIMS, including the different gases it can measure and the different kinds of samples it can measure (air, water; field samples, in line experiments, etc.). We are very excited to have this new capability in the lab, and look forward to all of the neat things we will learn with it! The Bernhardt and Heffernan labs were fortunate to have our friend and mentor Nancy Grimm as our guest this past week. Nancy is a world-renowned expert in biogeochemistry, stream and riparian ecology, and urban ecosystems. She is currently on leave from Arizona State Unviersity, where she was a collaborator and unofficial committee member, while she serves as program director for the National Science Foundation's Ecosystem Science Program.
Nancy's first talk addressed her work in desert streams and their past and future response to climate variability. Some of her lab's current work builds on my dissertation research on desert wetlands, which was very exciting to see! Nancy's second talk focused on funding opportunities at NSF, covering programs as small as supplemental support for high school students to programs as large as the new foundation-wide sustainability initiatives. There are lots of new programs at NSF as well as changes to how proposals and panels are working, so this was really helpful and interesting. We also got a chance to take Nancy out to the Eno River, which runs through north Durham and eventually in to Falls Lake. The land surrounding the Eno is largely undeveloped, thanks to the Eno River Land Trust, and the Eno River State Park is just beautiful. We spent lots of time talking about floods, vegetation, and nitrogen in rivers; turning over rocks to see mayfly, stonefly and caddisfly larvae; and spooking turtles sunning on boulders and logs. Good times. |
Welcome!This is the homepage of the Heffernan Lab at Duke University. Here you can find all sorts of information about our research, teaching, and outreach. If you have any questions, contact Dr. Heffernan. Dr. Jim HeffernanI am an Assistant Professor in the Nicholas School of the Environment at Duke University. My research is focused on the causes and consequences of major changes in ecosystem structure, mostly in streams and wetlands. Archives
May 2018
Categories
All
|