Last week, our manuscript on the influence of seasonal timing, long-term elevated growth temperature, and short-term temperature variability on leaf-level respiration was accepted by Functional Plant Biology. This manuscript presents data collected by myself and Danielle Bitterman (then an undergraduate at Columbia University, and now a medical student at New York University) during the tundra growing season of 2010. We made daily measurements of photosynthesis, respiration (in the dark and light, as estimated by the Kok effect - see below post), and short-term thermal response of respiration to temperature. Using environmental data (mean daily light levels, precipitation, ambient temperature, and relative humidity), we examined the response of gas exchange and leaf traits (nitrogen, leaf thickness) to seasonal timing and the surrounding abiotic variables.
This is the fourth publication from my dissertation - hopefully one more will be in shape for resubmission by the end of 2013. The manuscript isn't copy-edited yet - but the following links to the abstract:
In December 2010, as a qualification exam for my graduate program, I wrote a directed literature review on the light inhibition of respiration (the "Kok Effect") and how it can be scaled upward to the ecosystem level. Two years later in December 2012, I submitted a much revised version of this paper to Ecosphere, the open access journal of ESA.
This is the first review I've submitted, and it did not include datasets or a meta-analysis of data from other papers...making review a bit challenging for me and the reviewers. However, after a resubmission, extra focus on current scaling potential, and a deeper look into modeling, the paper was accepted in Summer 2013.
This paper urges the incorporation of the light inhibition of respiration in estimates of net ecosystem exchange. It was a great experience to delve so deeply into a topic that is rarely considered outside of our lab group.